/* ==========================================================================
   XE NÂNG NGƯỜI 68 - Design System & Main Stylesheet
   Version: 1.0.0
   ========================================================================== */

/* ==========================================================================
   1. CSS CUSTOM PROPERTIES (Design Tokens)
   ========================================================================== */
:root {
    /* --- Colors --- */
    --color-primary: #1e6666;
    --color-primary-light: #2d8c8c;
    --color-primary-dark: #123d3d;
    --color-primary-rgb: 30, 102, 102;

    --color-accent: #E8832A;
    --color-accent-light: #F5A623;
    --color-accent-dark: #D06B10;
    --color-accent-rgb: 232, 131, 42;

    --color-bg: #FFFFFF;
    --color-bg-alt: #F7F8FA;
    --color-bg-dark: #123d3d;

    --color-text: #1A1A2E;
    --color-text-secondary: #6B7280;
    --color-text-light: #9CA3AF;
    --color-text-inverse: #FFFFFF;

    --color-border: #E5E7EB;
    --color-border-light: #F3F4F6;

    --color-success: #10B981;
    --color-info: #3B82F6;
    --color-warning: #F59E0B;
    --color-danger: #EF4444;

    /* --- Typography --- */
    --font-heading: 'Be Vietnam Pro', sans-serif;
    --font-body: 'Inter', sans-serif;

    --text-xs: 0.75rem;
    /* 12px */
    --text-sm: 0.875rem;
    /* 14px */
    --text-base: 1rem;
    /* 16px */
    --text-lg: 1.125rem;
    /* 18px */
    --text-xl: 1.25rem;
    /* 20px */
    --text-2xl: 1.5rem;
    /* 24px */
    --text-3xl: 2rem;
    /* 32px */
    --text-4xl: 2.5rem;
    /* 40px */
    --text-5xl: 3rem;
    /* 48px */
    --text-6xl: 4rem;
    /* 64px */

    --leading-tight: 1.25;
    --leading-normal: 1.6;
    --leading-relaxed: 1.75;

    /* --- Spacing --- */
    --space-1: 0.25rem;
    /* 4px */
    --space-2: 0.5rem;
    /* 8px */
    --space-3: 0.75rem;
    /* 12px */
    --space-4: 1rem;
    /* 16px */
    --space-5: 1.25rem;
    /* 20px */
    --space-6: 1.5rem;
    /* 24px */
    --space-8: 2rem;
    /* 32px */
    --space-10: 2.5rem;
    /* 40px */
    --space-12: 3rem;
    /* 48px */
    --space-16: 4rem;
    /* 64px */
    --space-20: 5rem;
    /* 80px */
    --space-24: 6rem;
    /* 96px */

    /* --- Layout --- */
    --container-max: 1280px;
    --container-narrow: 960px;
    --container-wide: 1440px;
    --container-padding: 1.5rem;

    --header-height: 80px;
    --topbar-height: 40px;

    /* --- Borders --- */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;

    /* --- Shadows --- */
    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1), 0 1px 2px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-card-hover: 0 12px 24px rgba(0, 0, 0, 0.12);

    /* --- Transitions --- */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 400ms ease;
    --transition-spring: 400ms cubic-bezier(0.34, 1.56, 0.64, 1);

    /* --- Z-index --- */
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-overlay: 300;
    --z-modal: 400;
    --z-popover: 500;
    --z-toast: 600;
    --z-floating: 700;
}

/* ==========================================================================
   2. CSS RESET & BASE
   ========================================================================== */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
    font-size: 16px;
}

body {
    font-family: var(--font-body);
    font-size: var(--text-base);
    line-height: var(--leading-normal);
    color: var(--color-text);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

body.mobile-nav-open {
    overflow: hidden;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-accent);
}

ul,
ol {
    list-style: none;
}

button {
    cursor: pointer;
    border: none;
    background: none;
    font-family: inherit;
    font-size: inherit;
}

input,
textarea,
select {
    font-family: inherit;
    font-size: inherit;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: var(--leading-tight);
    color: var(--color-text);
}

h1 {
    font-size: var(--text-4xl);
}

h2 {
    font-size: var(--text-3xl);
}

h3 {
    font-size: var(--text-2xl);
}

h4 {
    font-size: var(--text-xl);
}

h5 {
    font-size: var(--text-lg);
}

h6 {
    font-size: var(--text-base);
}

p {
    margin-bottom: var(--space-4);
}

/* ==========================================================================
   3. LAYOUT
   ========================================================================== */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin-inline: auto;
    padding-inline: var(--container-padding);
}

.container--narrow {
    max-width: var(--container-narrow);
}

.container--wide {
    max-width: var(--container-wide);
}

.section {
    padding-block: var(--space-16);
}

.section--sm {
    padding-block: var(--space-10);
}

.section--lg {
    padding-block: var(--space-24);
}

.section--bg-alt {
    background-color: var(--color-bg-alt);
}

.section--bg-dark {
    background-color: var(--color-bg-dark);
    color: var(--color-text-inverse);
}

.section--bg-dark h2,
.section--bg-dark h3,
.section--bg-dark h4 {
    color: var(--color-text-inverse);
}

.grid {
    display: grid;
    gap: var(--space-6);
}

.grid--2 {
    grid-template-columns: repeat(2, 1fr);
}

.grid--3 {
    grid-template-columns: repeat(3, 1fr);
}

.grid--4 {
    grid-template-columns: repeat(4, 1fr);
}

.flex {
    display: flex;
    align-items: center;
}

.flex--between {
    justify-content: space-between;
}

.flex--center {
    justify-content: center;
}

.flex--wrap {
    flex-wrap: wrap;
}

.flex--gap {
    gap: var(--space-4);
}

/* ==========================================================================
   4. SECTION HEADERS
   ========================================================================== */
.section-header {
    text-align: center;
    margin-bottom: var(--space-12);
}

.section-header__badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-1) var(--space-4);
    background: linear-gradient(135deg, rgba(var(--color-accent-rgb), 0.1), rgba(var(--color-accent-rgb), 0.05));
    color: var(--color-accent);
    font-size: var(--text-sm);
    font-weight: 600;
    border-radius: var(--radius-full);
    margin-bottom: var(--space-4);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.section-header__title {
    font-size: var(--text-3xl);
    margin-bottom: var(--space-4);
    position: relative;
}

.section-header__desc {
    font-size: var(--text-lg);
    color: var(--color-text-secondary);
    max-width: 640px;
    margin-inline: auto;
}

.section--bg-dark .section-header__badge {
    background: rgba(255, 255, 255, 0.1);
    color: var(--color-accent-light);
}

.section--bg-dark .section-header__desc {
    color: rgba(255, 255, 255, 0.7);
}

/* ==========================================================================
   5. BUTTONS
   ========================================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    font-family: var(--font-heading);
    font-size: var(--text-sm);
    font-weight: 600;
    line-height: 1.5;
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    white-space: nowrap;
    cursor: pointer;
    border: 2px solid transparent;
    text-decoration: none;
    position: relative;
    overflow: hidden;
}

.btn .icon {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
}

.btn--primary {
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
    color: #fff;
    box-shadow: 0 4px 12px rgba(var(--color-accent-rgb), 0.35);
}

.btn--primary:hover {
    background: linear-gradient(135deg, var(--color-accent-light), var(--color-accent));
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(var(--color-accent-rgb), 0.45);
}

.btn--secondary {
    background: var(--color-primary);
    color: #fff;
}

.btn--secondary:hover {
    background: var(--color-primary-light);
    color: #fff;
    transform: translateY(-2px);
}

.btn--outline {
    background: transparent;
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.btn--outline:hover {
    background: var(--color-primary);
    color: #fff;
}

.btn--outline-white {
    background: transparent;
    border-color: #fff;
    color: #fff;
}

.btn--outline-white:hover {
    background: #fff;
    color: var(--color-primary);
}

.btn--ghost {
    background: transparent;
    color: var(--color-accent);
    padding-inline: var(--space-2);
}

.btn--ghost:hover {
    color: var(--color-accent-dark);
}

.btn--lg {
    padding: var(--space-4) var(--space-8);
    font-size: var(--text-base);
    border-radius: var(--radius-lg);
}

.btn--sm {
    padding: var(--space-2) var(--space-4);
    font-size: var(--text-xs);
}

.btn--full {
    width: 100%;
}

.btn--icon {
    width: 44px;
    height: 44px;
    padding: 0;
    border-radius: var(--radius-full);
}

/* ==========================================================================
   6. TOPBAR
   ========================================================================== */
.topbar {
    background: var(--color-primary-dark);
    color: rgba(255, 255, 255, 0.8);
    font-size: var(--text-sm);
    height: var(--topbar-height);
    display: flex;
    align-items: center;
    position: relative;
    z-index: var(--z-sticky);
}

.topbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.topbar__left {
    display: flex;
    align-items: center;
    gap: var(--space-6);
}

.topbar__item {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    color: rgba(255, 255, 255, 0.8);
    transition: color var(--transition-fast);
}

.topbar__item:hover {
    color: var(--color-accent-light);
}

.topbar__item .icon {
    width: 14px;
    height: 14px;
    margin-top: -4px;
}

.topbar__right {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.topbar__social {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.topbar__social a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    border-radius: var(--radius-full);
    background: rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.8);
    transition: all var(--transition-fast);
}

.topbar__social a:hover {
    background: var(--color-accent);
    color: #fff;
    transform: translateY(-1px);
}

.topbar__social a .icon,
.topbar__social a svg {
    width: 14px;
    height: 14px;
    margin-top: 0;
}

/* ==========================================================================
   7. HEADER
   ========================================================================== */
.site-header {
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
    background: var(--color-bg);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
}

.site-header.scrolled {
    box-shadow: var(--shadow-md);
}

.header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--header-height);
    gap: var(--space-8);
}

/* Logo */
.header__logo {
    flex-shrink: 0;
}

.header__logo a {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.header__logo img {
    height: 50px;
    width: auto;
}

.header__logo-text {
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: var(--text-xl);
    color: var(--color-primary);
    line-height: 1.2;
}

.header__logo-text small {
    display: block;
    font-size: var(--text-xs);
    font-weight: 500;
    color: var(--color-text-secondary);
}

/* Navigation */
.header__nav {
    flex: 1;
    display: flex;
    justify-content: center;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--space-1);
}

.nav-menu>li {
    position: relative;
}

.nav-menu>li>a {
    display: flex;
    align-items: center;
    gap: var(--space-1);
    padding: var(--space-2) var(--space-4);
    font-family: var(--font-heading);
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--color-text);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.nav-menu>li>a .icon,
.nav-menu>li>a svg {
    width: 16px;
    height: 16px;
    transition: transform var(--transition-fast);
}

.nav-menu>li:hover>a,
.nav-menu>li.current-menu-item>a {
    color: var(--color-accent);
    background: rgba(var(--color-accent-rgb), 0.06);
}

.nav-menu>li:hover>a .icon,
.nav-menu>li:hover>a svg {
    transform: rotate(180deg);
}

/* Dropdown hiện đại phong cách Glassmorphism */
.nav-dropdown {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(12px) scale(0.95);
    min-width: 240px;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(16px) saturate(180%);
    -webkit-backdrop-filter: blur(16px) saturate(180%);
    border-radius: var(--radius-lg);
    box-shadow:
        0 10px 30px -10px rgba(0, 0, 0, 0.1),
        0 1px 3px rgba(0, 0, 0, 0.05),
        inset 0 1px 0 rgba(255, 255, 255, 0.5);
    padding: var(--space-3) var(--space-2);
    opacity: 0;
    visibility: hidden;
    transition:
        opacity 0.25s cubic-bezier(0.4, 0, 0.2, 1),
        transform 0.25s cubic-bezier(0.34, 1.56, 0.64, 1),
        visibility 0.25s;
    border: 1px solid rgba(0, 0, 0, 0.06);
    z-index: var(--z-dropdown);
}

.nav-dropdown::before {
    content: '';
    position: absolute;
    top: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 0;
    border-left: 8px solid transparent;
    border-right: 8px solid transparent;
    border-bottom: 8px solid rgba(255, 255, 255, 0.9);
    filter: drop-shadow(0 -1px 1px rgba(0, 0, 0, 0.03));
}

.nav-menu>li:hover .nav-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0) scale(1);
}

.nav-dropdown a {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-3) var(--space-4);
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-text);
    border-radius: var(--radius-md);
    transition: all 0.25s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    position: relative;
    overflow: hidden;
}

.nav-dropdown a::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 0;
    background: var(--color-accent);
    border-radius: 0 4px 4px 0;
    transition: height 0.2s ease;
}

.nav-dropdown a:hover {
    background: rgba(var(--color-accent-rgb), 0.06);
    color: var(--color-accent);
    padding-left: calc(var(--space-4) + 6px);
}

.nav-dropdown a:hover::before {
    height: 16px;
}

.nav-dropdown a::after {
    content: '→';
    font-family: monospace;
    font-size: var(--text-sm);
    opacity: 0;
    transform: translateX(-10px);
    transition: all 0.2s ease;
    color: var(--color-accent);
}

.nav-dropdown a:hover::after {
    opacity: 1;
    transform: translateX(0);
}

/* Header actions */
.header__actions {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    flex-shrink: 0;
}

.header__search-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
}

.header__search-btn:hover {
    background: var(--color-bg-alt);
    color: var(--color-accent);
}

.header__search-btn .icon {
    width: 20px;
    height: 20px;
}

.header__phone {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
    color: #fff;
    border-radius: var(--radius-full);
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: var(--text-sm);
    transition: all var(--transition-base);
    box-shadow: 0 4px 12px rgba(var(--color-accent-rgb), 0.35);
}

.header__phone:hover {
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(var(--color-accent-rgb), 0.45);
}

.header__phone .icon {
    width: 18px;
    height: 18px;
    animation: phoneRing 2s ease-in-out infinite;
}

@keyframes phoneRing {

    0%,
    100% {
        transform: rotate(0deg);
    }

    5% {
        transform: rotate(15deg);
    }

    10% {
        transform: rotate(-15deg);
    }

    15% {
        transform: rotate(10deg);
    }

    20% {
        transform: rotate(-10deg);
    }

    25% {
        transform: rotate(0deg);
    }
}

/* Mobile menu toggle */
.header__menu-toggle {
    display: none;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: var(--radius-md);
    color: var(--color-text);
    transition: all var(--transition-fast);
}

.header__menu-toggle .icon {
    width: 24px;
    height: 24px;
}

.header__menu-toggle:hover {
    background: var(--color-bg-alt);
    color: var(--color-accent);
}

/* ==========================================================================
   8. MOBILE NAVIGATION
   ========================================================================== */
.mobile-nav-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: var(--z-overlay);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    backdrop-filter: blur(4px);
}

.mobile-nav-overlay.active {
    opacity: 1;
    visibility: visible;
}

.mobile-nav {
    position: fixed;
    top: 0;
    right: 0;
    width: 320px;
    max-width: 85vw;
    height: 100vh;
    background: var(--color-bg);
    z-index: var(--z-modal);
    transform: translateX(100%);
    transition: transform var(--transition-slow);
    overflow-y: auto;
    display: flex;
    flex-direction: column;
}

.mobile-nav.active {
    transform: translateX(0);
}

.mobile-nav__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-4) var(--space-5);
    border-bottom: 1px solid var(--color-border);
}

.mobile-nav__logo img {
    height: 40px;
    width: auto;
}

.mobile-nav__close {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-full);
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
}

.mobile-nav__close:hover {
    background: var(--color-bg-alt);
    color: var(--color-danger);
}

.mobile-nav__close .icon {
    width: 20px;
    height: 20px;
}

.mobile-nav__menu {
    padding: var(--space-4) var(--space-5);
    flex: 1;
    display: flex;
    flex-direction: column;
}

.mobile-nav__menu li {
    border-bottom: 1px solid var(--color-border-light);
    width: 100%;
    display: block;
}

.mobile-nav__menu>li>a {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-4) 0;
    font-family: var(--font-heading);
    font-size: var(--text-base);
    font-weight: 600;
    color: var(--color-text);
    width: 100%;
}

.mobile-nav__menu>li>a:hover {
    color: var(--color-accent);
}

.mobile-nav__sub,
.mobile-nav__menu .sub-menu {
    padding-left: var(--space-4);
    display: none;
    width: 100%;
}

.mobile-nav__sub.active,
.mobile-nav__menu .sub-menu.active {
    display: block;
}

.mobile-nav__sub a,
.mobile-nav__menu .sub-menu a {
    display: block;
    padding: var(--space-3) 0;
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
}

.mobile-nav__sub a:hover,
.mobile-nav__menu .sub-menu a:hover {
    color: var(--color-accent);
}

.mobile-nav__footer {
    padding: var(--space-5);
    border-top: 1px solid var(--color-border);
}

.mobile-nav__contact {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
    margin-bottom: var(--space-4);
}

.mobile-nav__contact a {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
}

.mobile-nav__contact a .icon {
    width: 16px;
    height: 16px;
    color: var(--color-accent);
}

/* ==========================================================================
   9. SEARCH OVERLAY
   ========================================================================== */
.search-overlay {
    position: fixed;
    inset: 0;
    background: rgba(var(--color-primary-rgb), 0.95);
    z-index: var(--z-modal);
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding-top: 15vh;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    backdrop-filter: blur(10px);
}

.search-overlay.active {
    opacity: 1;
    visibility: visible;
}

.search-overlay__inner {
    width: 100%;
    max-width: 700px;
    padding-inline: var(--space-6);
    transform: translateY(-20px);
    transition: transform var(--transition-slow);
}

.search-overlay.active .search-overlay__inner {
    transform: translateY(0);
}

.search-overlay__close {
    position: absolute;
    top: var(--space-6);
    right: var(--space-6);
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-full);
    color: rgba(255, 255, 255, 0.6);
    transition: all var(--transition-fast);
}

.search-overlay__close:hover {
    color: #fff;
    background: rgba(255, 255, 255, 0.1);
}

.search-overlay__close .icon {
    width: 24px;
    height: 24px;
}

.search-overlay__title {
    color: #fff;
    font-size: var(--text-2xl);
    text-align: center;
    margin-bottom: var(--space-8);
}

.search-overlay__form {
    position: relative;
}

.search-overlay__input {
    width: 100%;
    padding: var(--space-5) var(--space-6);
    padding-right: 60px;
    background: rgba(255, 255, 255, 0.1);
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-xl);
    color: #fff;
    font-size: var(--text-lg);
    outline: none;
    transition: all var(--transition-fast);
}

.search-overlay__input::placeholder {
    color: rgba(255, 255, 255, 0.5);
}

.search-overlay__input:focus {
    border-color: var(--color-accent);
    background: rgba(255, 255, 255, 0.15);
}

.search-overlay__submit {
    position: absolute;
    right: var(--space-2);
    top: 50%;
    transform: translateY(-50%);
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-accent);
    border-radius: var(--radius-full);
    color: #fff;
    transition: all var(--transition-fast);
}

.search-overlay__submit:hover {
    background: var(--color-accent-light);
}

.search-overlay__submit .icon {
    width: 20px;
    height: 20px;
}

/* ==========================================================================
   10. HERO SLIDER
   ========================================================================== */
.hero-slider {
    position: relative;
    overflow: hidden;
    background: var(--color-primary-dark);
}

.hero-slider__track {
    display: flex;
    transition: transform 600ms ease-in-out;
}

.hero-slide {
    min-width: 100%;
    position: relative;
    height: 600px;
}

.hero-slide__image {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-slide__overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to right,
            rgba(var(--color-primary-rgb), 0.92) 0%,
            rgba(var(--color-primary-rgb), 0.6) 60%,
            rgba(0, 0, 0, 0.25) 100%);
}

.hero-slide__content {
    position: relative;
    z-index: 1;
    height: 100%;
    display: flex;
    align-items: center;
}

.hero-slide__text {
    max-width: 600px;
}

.hero-slide__badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-1) var(--space-4);
    background: rgba(var(--color-accent-rgb), 0.2);
    border: 1px solid rgba(var(--color-accent-rgb), 0.3);
    color: var(--color-accent-light);
    font-size: var(--text-sm);
    font-weight: 600;
    border-radius: var(--radius-full);
    margin-bottom: var(--space-5);
    backdrop-filter: blur(10px);
}

.hero-slide__title {
    font-size: var(--text-5xl);
    color: #fff;
    margin-bottom: var(--space-4);
    line-height: 1.15;
}

.hero-slide__title span {
    color: var(--color-accent-light);
}

.hero-slide__desc {
    font-size: var(--text-lg);
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: var(--space-8);
    line-height: var(--leading-relaxed);
}

.hero-slide__actions {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

/* Slider controls */
.hero-slider__nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-full);
    color: #fff;
    z-index: 2;
    transition: all var(--transition-fast);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.hero-slider__nav:hover {
    background: var(--color-accent);
    border-color: var(--color-accent);
}

.hero-slider__nav .icon {
    width: 20px;
    height: 20px;
}

.hero-slider__prev {
    left: var(--space-6);
}

.hero-slider__next {
    right: var(--space-6);
}

.hero-slider__dots {
    position: absolute;
    bottom: var(--space-8);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: var(--space-2);
    z-index: 2;
}

.hero-slider__dot {
    width: 12px;
    height: 4px;
    border-radius: var(--radius-full);
    background: rgba(255, 255, 255, 0.4);
    cursor: pointer;
    transition: all var(--transition-base);
}

.hero-slider__dot.active {
    width: 32px;
    background: var(--color-accent);
}

/* ==========================================================================
   11. CARDS
   ========================================================================== */

/* Product Card */
.product-card {
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-card);
    transition: all var(--transition-base);
    display: flex;
    flex-direction: column;
    position: relative;
}

.product-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-card-hover);
}

.product-card__badge {
    position: absolute;
    top: var(--space-3);
    left: var(--space-3);
    z-index: 2;
    padding: var(--space-1) var(--space-3);
    background: var(--color-accent);
    color: #fff;
    font-size: var(--text-xs);
    font-weight: 700;
    border-radius: var(--radius-sm);
    text-transform: uppercase;
}

.product-card__badge--hot {
    background: var(--color-danger);
}

.product-card__badge--new {
    background: var(--color-success);
}

.product-card__image {
    position: relative;
    padding-top: 70%;
    overflow: hidden;
}

.product-card__image img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.product-card:hover .product-card__image img {
    transform: scale(1.08);
}

.product-card__overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.4), transparent);
    opacity: 0;
    transition: opacity var(--transition-base);
    display: flex;
    align-items: flex-end;
    justify-content: center;
    padding-bottom: var(--space-4);
}

.product-card:hover .product-card__overlay {
    opacity: 1;
}

.product-card__quick-view {
    padding: var(--space-2) var(--space-5);
    background: #fff;
    color: var(--color-primary);
    font-size: var(--text-sm);
    font-weight: 600;
    border-radius: var(--radius-full);
    transform: translateY(10px);
    transition: transform var(--transition-base);
}

.product-card:hover .product-card__quick-view {
    transform: translateY(0);
}

.product-card__body {
    padding: var(--space-5);
    flex: 1;
    display: flex;
    flex-direction: column;
}

.product-card__cat {
    font-size: var(--text-xs);
    font-weight: 600;
    color: var(--color-accent);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-2);
}

.product-card__title {
    font-size: var(--text-base);
    font-weight: 700;
    margin-bottom: var(--space-3);
    line-height: var(--leading-tight);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.product-card__title a {
    color: var(--color-text);
    transition: color var(--transition-fast);
}

.product-card__title a:hover {
    color: var(--color-accent);
}

.product-card__specs {
    display: flex;
    gap: var(--space-4);
    padding-top: var(--space-3);
    border-top: 1px solid var(--color-border-light);
    margin-top: auto;
    font-size: var(--text-xs);
    color: var(--color-text-secondary);
}

.product-card__spec {
    display: flex;
    align-items: center;
    gap: var(--space-1);
}

.product-card__price {
    font-family: var(--font-heading);
    font-size: var(--text-lg);
    font-weight: 700;
    color: var(--color-accent);
    margin-top: var(--space-3);
}

/* Blog Card */
.blog-card {
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-card);
    transition: all var(--transition-base);
}

.blog-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-card-hover);
}

.blog-card__image {
    position: relative;
    padding-top: 60%;
    overflow: hidden;
}

.blog-card__image img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.blog-card:hover .blog-card__image img {
    transform: scale(1.05);
}

.blog-card__body {
    padding: var(--space-5);
}

.blog-card__meta {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    font-size: var(--text-xs);
    color: var(--color-text-light);
    margin-bottom: var(--space-3);
}

.blog-card__meta-item {
    display: flex;
    align-items: center;
    gap: var(--space-1);
}

.blog-card__meta-item .icon {
    width: 14px;
    height: 14px;
}

.blog-card__title {
    font-size: var(--text-lg);
    font-weight: 700;
    margin-bottom: var(--space-3);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.blog-card__title a {
    color: var(--color-text);
    transition: color var(--transition-fast);
}

.blog-card__title a:hover {
    color: var(--color-accent);
}

.blog-card__excerpt {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    line-height: var(--leading-relaxed);
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.blog-card__link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    margin-top: var(--space-4);
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--color-accent);
}

.blog-card__link .icon {
    width: 16px;
    height: 16px;
    transition: transform var(--transition-fast);
}

.blog-card__link:hover .icon {
    transform: translateX(4px);
}

/* Service Card */
.service-card {
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    padding: var(--space-8);
    box-shadow: var(--shadow-card);
    transition: all var(--transition-base);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(to right, var(--color-accent), var(--color-accent-light));
    transform: scaleX(0);
    transition: transform var(--transition-base);
}

.service-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-card-hover);
}

.service-card:hover::before {
    transform: scaleX(1);
}

.service-card__icon {
    width: 100%;
    height: auto;
    aspect-ratio: 330/330;
    overflow: hidden;
    margin: 0 auto var(--space-5);
    display: flex;
    align-items: center;
    justify-content: center;
    /* background: linear-gradient(135deg, rgba(var(--color-accent-rgb), 0.1), rgba(var(--color-accent-rgb), 0.05)); */
    border-radius: var(--radius-lg);
    color: var(--color-accent);
}

.service-card__icon img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* Khống chế kích thước icon phần Cam kết và Giá trị cốt lõi */
#tai-sao-chon-chung-toi .service-card__icon,
#gia-tri-cot-loi .service-card__icon {
    width: 130px;
    height: 130px;
    aspect-ratio: 1/1;
    border-radius: var(--radius-lg);
}

#tai-sao-chon-chung-toi .service-card__icon img,
#gia-tri-cot-loi .service-card__icon img {
    width: 120px;
    height: 120px;
    object-fit: contain;
}

.service-card__title {
    font-size: var(--text-xl);
    margin-bottom: var(--space-3);
}

.service-card__desc {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    line-height: var(--leading-relaxed);
}

/* Category Card */
.category-card {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    aspect-ratio: 4/3;
    cursor: pointer;
}

.category-card__image {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.category-card:hover .category-card__image {
    transform: scale(1.1);
}

.category-card__overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.7) 0%, rgba(0, 0, 0, 0.1) 60%, transparent 100%);
    transition: background var(--transition-base);
}

.category-card:hover .category-card__overlay {
    background: linear-gradient(to top, rgba(var(--color-primary-rgb), 0.85) 0%, rgba(var(--color-primary-rgb), 0.3) 60%, transparent 100%);
}

.category-card__content {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: var(--space-6);
    z-index: 1;
}

.category-card__title {
    color: #fff;
    font-size: var(--text-xl);
    margin-bottom: var(--space-2);
}

.category-card__count {
    color: rgba(255, 255, 255, 0.7);
    font-size: var(--text-sm);
}

.category-card__arrow {
    position: absolute;
    bottom: var(--space-6);
    right: var(--space-6);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-accent);
    border-radius: var(--radius-full);
    color: #fff;
    transform: translateX(10px);
    opacity: 0;
    transition: all var(--transition-base);
}

.category-card:hover .category-card__arrow {
    transform: translateX(0);
    opacity: 1;
}

.category-card__arrow .icon {
    width: 18px;
    height: 18px;
}

/* ==========================================================================
   12. STATS COUNTER
   ========================================================================== */
.stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-6);
}

.stat-item {
    text-align: center;
    padding: var(--space-8) var(--space-4);
}

.stat-item__number {
    font-family: var(--font-heading);
    font-size: var(--text-5xl);
    font-weight: 800;
    color: var(--color-accent);
    line-height: 1;
    margin-bottom: var(--space-2);
}

.stat-item__number span {
    font-size: var(--text-3xl);
}

.stat-item__label {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    font-weight: 500;
}

.section--bg-dark .stat-item__label {
    color: rgba(255, 255, 255, 0.7);
}

/* ==========================================================================
   13. TESTIMONIALS
   ========================================================================== */
.testimonial-card {
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    padding: var(--space-8);
    box-shadow: var(--shadow-card);
    position: relative;
    height: 100%;
    display: flex;
    flex-direction: column;
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.testimonial-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-card-hover);
}

.testimonial-card__quote {
    font-size: var(--text-5xl);
    color: var(--color-accent);
    opacity: 0.2;
    line-height: 1;
    margin-bottom: var(--space-4);
    font-family: Georgia, serif;
}

.testimonial-card__text {
    font-size: var(--text-base);
    color: var(--color-text-secondary);
    line-height: var(--leading-relaxed);
    margin-bottom: var(--space-6);
    font-style: italic;
    flex-grow: 1;
}

.testimonial-card__text p {
    margin: 0;
}

.testimonial-card__text p:not(:last-child) {
    margin-bottom: var(--space-3);
}

.testimonial-card__author {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    margin-top: auto;
}

.testimonial-card__avatar {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-full);
    object-fit: cover;
}

.testimonial-card__name {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: var(--text-base);
}

.testimonial-card__company {
    font-size: var(--text-sm);
    color: var(--color-text-light);
}

.testimonial-card__rating {
    display: flex;
    gap: 2px;
    margin-top: var(--space-1);
}

.testimonial-card__rating .icon,
.testimonial-card__rating svg {
    width: 14px;
    height: 14px;
    color: var(--color-warning);
}

/* Testimonial Slider */
.testimonial-slider {
    position: relative;
    width: 100%;
    padding: 0 10px;
}

.testimonial-slider__viewport {
    overflow: hidden;
    width: 100%;
    padding: var(--space-4) 0;
    margin: calc(-1 * var(--space-4)) 0;
}

.testimonial-slider__track {
    display: flex;
    gap: var(--space-6);
    transition: transform 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    will-change: transform;
    align-items: stretch;
}

.testimonial-slider__item {
    flex: 0 0 calc((100% - 2 * var(--space-6)) / 3);
    width: calc((100% - 2 * var(--space-6)) / 3);
    box-sizing: border-box;
}

.testimonial-slider__nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 44px;
    height: 44px;
    border-radius: var(--radius-full);
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    color: var(--color-text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 2;
    transition: all var(--transition-fast);
    box-shadow: var(--shadow-sm);
    padding: 0;
}

.testimonial-slider__nav:hover:not(:disabled) {
    background: var(--color-accent);
    color: #fff;
    border-color: var(--color-accent);
}

.testimonial-slider__nav:disabled {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.testimonial-slider__prev {
    left: -22px;
}

.testimonial-slider__next {
    right: -22px;
}

@media (max-width: 1200px) {
    .testimonial-slider__prev {
        left: 0;
    }

    .testimonial-slider__next {
        right: 0;
    }
}

/* Tablet */
@media (max-width: 992px) {
    .testimonial-slider__item {
        flex: 0 0 calc((100% - var(--space-6)) / 2);
        width: calc((100% - var(--space-6)) / 2);
    }
}

/* Mobile */
@media (max-width: 576px) {
    .testimonial-slider__item {
        flex: 0 0 100%;
        width: 100%;
    }

    .testimonial-slider__nav {
        display: none;
    }
}

.testimonial-slider__dots {
    display: flex;
    justify-content: center;
    gap: var(--space-2);
    margin-top: var(--space-6);
}

.testimonial-slider__dot {
    width: 10px;
    height: 10px;
    border-radius: var(--radius-full);
    background: var(--color-border);
    border: none;
    padding: 0;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.testimonial-slider__dot.active {
    background: var(--color-accent);
    width: 24px;
}

/* ==========================================================================
   14. PARTNERS LOGO
   ========================================================================== */
.partners-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: var(--space-8);
}

.partner-logo {
    flex: 0 0 auto;
    opacity: 0.5;
    transition: all var(--transition-base);
    filter: grayscale(100%);
}

.partner-logo:hover {
    opacity: 1;
    filter: grayscale(0%);
    transform: scale(1.05);
}

.partner-logo img {
    max-height: 60px;
    width: auto;
}

/* ==========================================================================
   15. CTA SECTION
   ========================================================================== */
.cta-section {
    position: relative;
    padding: var(--space-20) 0;
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
}

.cta-section__overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(var(--color-primary-rgb), 0.92), rgba(var(--color-primary-rgb), 0.8));
}

.cta-section__content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 700px;
    margin-inline: auto;
}

.cta-section__title {
    font-size: var(--text-4xl);
    color: #fff;
    margin-bottom: var(--space-5);
}

.cta-section__desc {
    font-size: var(--text-lg);
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: var(--space-8);
}

.cta-section__actions {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-4);
    flex-wrap: wrap;
}

/* ==========================================================================
   16. FOOTER
   ========================================================================== */
.site-footer {
    background: #ffffff;
    color: var(--color-text-secondary);
    border-top: 1px solid var(--color-border);
}

.footer__main {
    padding: var(--space-16) 0;
}

.footer__grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: var(--space-10);
}

.footer__brand p {
    font-size: var(--text-sm);
    line-height: var(--leading-relaxed);
    margin-bottom: var(--space-5);
    color: var(--color-text-secondary);
}

.footer__logo {
    display: inline-block;
    margin-bottom: var(--space-4);
}

.footer__logo-img {
    height: 45px;
    width: auto;
    filter: none;
}

.footer__social {
    display: flex;
    gap: var(--space-3);
}

.footer__social a {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg-alt);
    border-radius: var(--radius-full);
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
}

.footer__social a:hover {
    background: var(--color-accent);
    color: #fff;
    transform: translateY(-2px);
}

.footer__social a .icon,
.footer__social a svg {
    width: 18px;
    height: 18px;
}

.footer__col-title {
    font-family: var(--font-heading);
    font-size: var(--text-base);
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: var(--space-5);
    position: relative;
    padding-bottom: var(--space-3);
}

.footer__col-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 32px;
    height: 3px;
    background: var(--color-accent);
    border-radius: var(--radius-full);
}

.footer__links li {
    margin-bottom: var(--space-3);
}

.footer__links a {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.footer__links a:hover {
    color: var(--color-primary);
    padding-left: var(--space-2);
}

.footer__contact-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.footer__contact-item {
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
}

.footer__contact-item .icon {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
    color: var(--color-accent);
    margin-top: 2px;
}

.footer__contact-item a {
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
}

.footer__contact-item a:hover {
    color: var(--color-primary);
}

.footer__bottom {
    border-top: 1px solid var(--color-border);
    padding: var(--space-5) 0;
}

.footer__bottom .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.footer__copyright {
    font-size: var(--text-sm);
    color: var(--color-text-light);
}

/* ==========================================================================
   17. FLOATING BUTTONS
   ========================================================================== */
.floating-buttons {
    position: fixed;
    bottom: var(--space-6);
    right: var(--space-6);
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
    z-index: var(--z-floating);
}

.floating-btn {
    width: 52px;
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-full);
    color: #fff;
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-base);
    position: relative;
}

.floating-btn:hover {
    transform: scale(1.1);
    color: #fff;
}

.floating-btn--phone {
    background: var(--color-success);
    animation: pulse-phone 2s infinite;
}

.floating-btn--zalo {
    background: #0068FF;
    animation: pulse-zalo 2s infinite;
}

.floating-btn--chat {
    background: var(--color-accent);
}

.floating-btn .icon,
.floating-btn svg {
    width: 24px;
    height: 24px;
}

.floating-btn__label {
    position: absolute;
    right: 100%;
    top: 50%;
    transform: translateY(-50%);
    margin-right: var(--space-3);
    padding: var(--space-2) var(--space-4);
    background: var(--color-primary);
    color: #fff;
    font-size: var(--text-xs);
    font-weight: 600;
    border-radius: var(--radius-md);
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-fast);
    pointer-events: none;
}

.floating-btn:hover .floating-btn__label {
    opacity: 1;
    visibility: visible;
}

@keyframes pulse-phone {

    0%,
    100% {
        box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.5);
    }

    50% {
        box-shadow: 0 0 0 15px rgba(16, 185, 129, 0);
    }
}

@keyframes pulse-zalo {

    0%,
    100% {
        box-shadow: 0 0 0 0 rgba(42, 105, 241, 0.5);
    }

    50% {
        box-shadow: 0 0 0 15px rgba(16, 185, 129, 0);
    }
}

/* Back to Top */
.back-to-top {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-primary);
    color: #fff;
    border-radius: var(--radius-full);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-md);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: var(--color-accent);
    color: #fff;
    transform: translateY(-3px);
}

.back-to-top .icon {
    width: 20px;
    height: 20px;
}

/* ==========================================================================
   18. BREADCRUMBS
   ========================================================================== */
.breadcrumb {
    padding: var(--space-4) 0;
    background: var(--color-bg-alt);
    border-bottom: 1px solid var(--color-border-light);
}

.breadcrumb__list {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-2);
    font-size: var(--text-sm);
}

.breadcrumb__item {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    color: var(--color-text-secondary);
}

.breadcrumb__item a {
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
}

.breadcrumb__item a:hover {
    color: var(--color-accent);
}

.breadcrumb__separator {
    color: var(--color-text-light);
}

.breadcrumb__separator .icon {
    width: 14px;
    height: 14px;
}

.breadcrumb__item--active {
    color: var(--color-text);
    font-weight: 600;
}

/* ==========================================================================
   19. PAGE HERO (inner pages)
   ========================================================================== */
.page-hero {
    position: relative;
    padding: var(--space-16) 0;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    overflow: hidden;
}

.page-hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(var(--color-accent-rgb), 0.15), transparent 70%);
    border-radius: 50%;
}

.page-hero::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.05), transparent 70%);
    border-radius: 50%;
}

.page-hero__content {
    position: relative;
    z-index: 1;
}

.page-hero__title {
    font-size: var(--text-4xl);
    color: #fff;
    margin-bottom: var(--space-4);
}

.page-hero__desc {
    font-size: var(--text-lg);
    color: rgba(255, 255, 255, 0.7);
    max-width: 600px;
}

/* ==========================================================================
   20. FORMS
   ========================================================================== */
.form-group {
    margin-bottom: var(--space-5);
}

.form-label {
    display: block;
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: var(--space-2);
}

.form-control {
    width: 100%;
    padding: var(--space-3) var(--space-4);
    background: var(--color-bg);
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: var(--text-base);
    color: var(--color-text);
    transition: all var(--transition-fast);
    outline: none;
}

.form-control::placeholder {
    color: var(--color-text-light);
}

.form-control:focus {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(var(--color-accent-rgb), 0.15);
}

textarea.form-control {
    min-height: 120px;
    resize: vertical;
}

select.form-control {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%236B7280' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    background-size: 18px;
    padding-right: 40px;
}

.form-control--error {
    border-color: var(--color-danger);
}

.form-error {
    font-size: var(--text-xs);
    color: var(--color-danger);
    margin-top: var(--space-1);
}

/* ==========================================================================
   21. PAGINATION
   ========================================================================== */
.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    margin-top: var(--space-10);
}

.pagination a,
.pagination span {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    padding: 0 var(--space-3);
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-text);
    transition: all var(--transition-fast);
}

.pagination a:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
}

.pagination .current {
    background: var(--color-accent);
    border-color: var(--color-accent);
    color: #fff;
}

/* ==========================================================================
   22. SCROLL ANIMATIONS
   ========================================================================== */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.revealed {
    opacity: 1;
    transform: translateY(0);
}

.reveal--left {
    transform: translateX(-30px);
}

.reveal--left.revealed {
    transform: translateX(0);
}

.reveal--right {
    transform: translateX(30px);
}

.reveal--right.revealed {
    transform: translateX(0);
}

.reveal--scale {
    transform: scale(0.95);
}

.reveal--scale.revealed {
    transform: scale(1);
}

/* Stagger children */
.stagger-children>* {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.5s ease, transform 0.5s ease;
}

.stagger-children.revealed>*:nth-child(1) {
    transition-delay: 0.1s;
}

.stagger-children.revealed>*:nth-child(2) {
    transition-delay: 0.2s;
}

.stagger-children.revealed>*:nth-child(3) {
    transition-delay: 0.3s;
}

.stagger-children.revealed>*:nth-child(4) {
    transition-delay: 0.4s;
}

.stagger-children.revealed>*:nth-child(5) {
    transition-delay: 0.5s;
}

.stagger-children.revealed>*:nth-child(6) {
    transition-delay: 0.6s;
}

.stagger-children.revealed>* {
    opacity: 1;
    transform: translateY(0);
}

/* ==========================================================================
   23. UTILITY CLASSES
   ========================================================================== */
.text-center {
    text-align: center;
}

.text-left {
    text-align: left;
}

.text-right {
    text-align: right;
}

.text-accent {
    color: var(--color-accent);
}

.text-primary {
    color: var(--color-primary);
}

.text-secondary {
    color: var(--color-text-secondary);
}

.text-sm {
    font-size: var(--text-sm);
}

.text-lg {
    font-size: var(--text-lg);
}

.font-bold {
    font-weight: 700;
}

.font-semibold {
    font-weight: 600;
}

.mt-0 {
    margin-top: 0;
}

.mb-0 {
    margin-bottom: 0;
}

.mb-4 {
    margin-bottom: var(--space-4);
}

.mb-8 {
    margin-bottom: var(--space-8);
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

/* ==========================================================================
   24. RESPONSIVE
   ========================================================================== */

/* Tablet */
@media (max-width: 1024px) {
    :root {
        --header-height: 70px;
    }

    h1 {
        font-size: var(--text-3xl);
    }

    h2 {
        font-size: var(--text-2xl);
    }

    .section {
        padding-block: var(--space-12);
    }

    .topbar {
        display: none;
    }

    .header__nav {
        display: none;
    }

    .header__menu-toggle {
        display: flex;
    }

    .hero-slide {
        height: 450px;
    }

    .hero-slide__title {
        font-size: var(--text-3xl);
    }

    .grid--4 {
        grid-template-columns: repeat(2, 1fr);
    }

    .grid--3 {
        grid-template-columns: repeat(2, 1fr);
    }

    .stats {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer__grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .hero-slider__nav {
        display: none;
    }
}

/* Mobile */
@media (max-width: 768px) {
    :root {
        --container-padding: 1rem;
    }

    h1 {
        font-size: var(--text-2xl);
    }

    h2 {
        font-size: var(--text-xl);
    }

    .section {
        padding-block: var(--space-10);
    }

    .section-header {
        margin-bottom: var(--space-8);
    }

    .section-header__title {
        font-size: var(--text-2xl);
    }

    /* .hero-slide {
        height: 400px;
    } */

    .hero-slide__title {
        font-size: var(--text-2xl);
    }

    .hero-slide__desc {
        font-size: var(--text-base);
    }

    .hero-slide__actions {
        flex-direction: column;
        align-items: flex-start;
    }

    .grid--2,
    .grid--3,
    .grid--4 {
        grid-template-columns: 1fr;
    }

    .stats {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-3);
    }

    .stat-item {
        padding: var(--space-5) var(--space-3);
    }

    .stat-item__number {
        font-size: var(--text-3xl);
    }

    .footer__grid {
        grid-template-columns: 1fr;
        gap: var(--space-8);
    }

    .header__phone span:not(.icon) {
        display: none;
    }

    .page-hero {
        padding: var(--space-10) 0;
    }

    .page-hero__title {
        font-size: var(--text-2xl);
    }

    .cta-section {
        padding: var(--space-12) 0;
    }

    .cta-section__title {
        font-size: var(--text-2xl);
    }

    .floating-buttons {
        bottom: var(--space-4);
        right: var(--space-4);
    }

    .floating-btn {
        width: 48px;
        height: 48px;
    }
}

/* Small mobile */
@media (max-width: 480px) {
    .hero-slide {
        /* height: 350px; */
    }

    .hero-slide__text {
        padding-right: var(--space-4);
    }
}

/* ==========================================================================
   25. ENTRY CONTENT (WordPress content)
   ========================================================================== */
.entry-content h2 {
    font-size: var(--text-2xl);
    margin: var(--space-8) 0 var(--space-4);
}

.entry-content h3 {
    font-size: var(--text-xl);
    margin: var(--space-6) 0 var(--space-3);
}

.entry-content h4 {
    font-size: var(--text-lg);
    margin: var(--space-5) 0 var(--space-3);
}

.entry-content p {
    margin-bottom: var(--space-4);
    line-height: var(--leading-relaxed);
}

.entry-content ul,
.entry-content ol {
    margin: var(--space-4) 0;
    padding-left: var(--space-6);
}

.entry-content ul {
    list-style: disc;
}

.entry-content ol {
    list-style: decimal;
}

.entry-content li {
    margin-bottom: var(--space-2);
    line-height: var(--leading-relaxed);
}

.entry-content img {
    border-radius: var(--radius-md);
    margin: var(--space-6) 0;
}

.entry-content blockquote {
    border-left: 4px solid var(--color-accent);
    padding: var(--space-4) var(--space-6);
    margin: var(--space-6) 0;
    background: var(--color-bg-alt);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    font-style: italic;
    color: var(--color-text-secondary);
}

.entry-content table {
    width: 100%;
    border-collapse: collapse;
    margin: var(--space-6) 0;
}

.entry-content th,
.entry-content td {
    padding: var(--space-3) var(--space-4);
    border: 1px solid var(--color-border);
    text-align: left;
}

.entry-content th {
    background: var(--color-bg-alt);
    font-weight: 600;
}

.entry-content a {
    color: var(--color-accent);
    text-decoration: underline;
}

.entry-content a:hover {
    color: var(--color-accent-dark);
}

/* ==========================================================================
   26. FORM MESSAGE & SPINNER
   ========================================================================== */
.form-message {
    font-size: var(--text-sm);
    font-weight: 500;
    border-radius: var(--radius-md);
}

.form-message--success {
    background: rgba(16, 185, 129, 0.1);
    color: var(--color-success);
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.form-message--error {
    background: rgba(239, 68, 68, 0.1);
    color: var(--color-danger);
    border: 1px solid rgba(239, 68, 68, 0.2);
}

.spinner {
    display: inline-block;
    width: 24px;
    height: 24px;
    border: 3px solid var(--color-border);
    border-top-color: var(--color-accent);
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* ==========================================================================
   27. PRODUCT FILTERS
   ========================================================================== */
.product-filters {
    padding: var(--space-6);
    background: var(--color-bg-alt);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-8);
    border: 1px solid var(--color-border-light);
}

.no-results {
    text-align: center;
    padding: var(--space-16);
}

.no-results h2,
.no-results h3 {
    margin-bottom: var(--space-3);
}

/* ==========================================================================
   28. RESPONSIVE - Product Detail & Contact Page
   ========================================================================== */
@media (max-width: 768px) {

    /* Product detail 2-col → 1-col */
    [style*="grid-template-columns: 1fr 1fr"] {
        grid-template-columns: 1fr !important;
    }

    /* Contact page 2-col → 1-col */
    [style*="grid-template-columns: 1fr 1.2fr"] {
        grid-template-columns: 1fr !important;
    }

    /* Product filter bar */
    .product-filters .flex--between {
        flex-direction: column;
    }
}

/* ==========================================================================
   29. CATEGORY SLIDER STYLING
   ========================================================================== */
.category-slider {
    position: relative;
    width: 100%;
    padding: 0 10px;
}

.category-slider__viewport {
    overflow: hidden;
    width: 100%;
    padding: var(--space-4) 0;
    margin: calc(-1 * var(--space-4)) 0;
}

.category-slider__track {
    display: flex;
    gap: var(--space-6);
    transition: transform 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    will-change: transform;
    align-items: stretch;
}

.category-slider__item {
    flex: 0 0 calc((100% - 3 * var(--space-6)) / 4);
    width: calc((100% - 3 * var(--space-6)) / 4);
    box-sizing: border-box;
}

.category-slider__nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 44px;
    height: 44px;
    border-radius: var(--radius-full);
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    color: var(--color-text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 2;
    transition: all var(--transition-fast);
    box-shadow: var(--shadow-sm);
    padding: 0;
}

.category-slider__nav:hover:not(:disabled) {
    background: var(--color-accent);
    color: #fff;
    border-color: var(--color-accent);
}

.category-slider__nav:disabled {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.category-slider__prev {
    left: -22px;
}

.category-slider__next {
    right: -22px;
}

@media (max-width: 1200px) {
    .category-slider__prev {
        left: 0;
    }

    .category-slider__next {
        right: 0;
    }
}

/* Tablet */
@media (max-width: 992px) {
    .category-slider__item {
        flex: 0 0 calc((100% - var(--space-6)) / 2);
        width: calc((100% - var(--space-6)) / 2);
    }
}

/* Mobile */
@media (max-width: 576px) {
    .category-slider__item {
        flex: 0 0 100%;
        width: 100%;
    }

    .category-slider__nav {
        display: none;
    }
}

.category-slider__dots {
    display: flex;
    justify-content: center;
    gap: var(--space-2);
    margin-top: var(--space-6);
}

.category-slider__dot {
    width: 10px;
    height: 10px;
    border-radius: var(--radius-full);
    background: var(--color-border);
    border: none;
    padding: 0;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.category-slider__dot.active {
    background: var(--color-accent);
    width: 24px;
}