/* ============================================
   ĐÔNG Y GIA TRUYỀN HÒA BÌNH - LANDING PAGE
   Design System: Traditional Medicine Heritage
   ============================================ */

/* === DESIGN TOKENS === */
:root {
    /* Primary palette - Deep Forest Green & Gold */
    --color-primary: #1a5c2a;
    --color-primary-dark: #0f3d1a;
    --color-primary-light: #2d8a44;
    --color-primary-soft: #e8f5e9;

    /* Gold / Accent */
    --color-gold: #c8a94e;
    --color-gold-dark: #a68a30;
    --color-gold-light: #e6d48a;

    /* Earthy tones */
    --color-parchment: #fdf8f0;
    --color-parchment-dark: #f5eeda;
    --color-brown: #5c3d2e;
    --color-brown-light: #8b6a54;
    --color-cream: #f9f3e6;

    /* Warm neutral */
    --color-warm-bg: #faf6ee;

    /* Text */
    --color-text: #2c1810;
    --color-text-secondary: #5a4537;
    --color-text-muted: #8a7a6e;
    --color-text-light: #ffffff;

    /* Utility */
    --color-danger: #c0392b;
    --color-warning: #e67e22;
    --color-success: #27ae60;
    --color-zalo: #0068ff;

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(26, 92, 42, 0.08);
    --shadow-md: 0 4px 20px rgba(26, 92, 42, 0.12);
    --shadow-lg: 0 8px 40px rgba(26, 92, 42, 0.15);
    --shadow-gold: 0 4px 20px rgba(200, 169, 78, 0.25);

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #1a5c2a 0%, #2d8a44 100%);
    --gradient-gold: linear-gradient(135deg, #c8a94e 0%, #e6d48a 50%, #c8a94e 100%);
    --gradient-hero: linear-gradient(160deg, #0f3d1a 0%, #1a5c2a 40%, #2d6b3a 100%);
    --gradient-parchment: linear-gradient(180deg, #fdf8f0 0%, #f5eeda 100%);

    /* Typography */
    --font-heading: 'Playfair Display', Georgia, 'Times New Roman', serif;
    --font-body: 'Be Vietnam Pro', -apple-system, BlinkMacSystemFont, sans-serif;

    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    --space-4xl: 6rem;

    /* Border radius */
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 30px;
    --radius-round: 50%;

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;

    /* Header height */
    --header-height: 72px;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--header-height);
}

body {
    font-family: var(--font-body);
    color: var(--color-text);
    background-color: var(--color-parchment);
    line-height: 1.7;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

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

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition-normal);
}

ul, ol {
    list-style: none;
}

/* === UTILITY CLASSES === */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

.text-gradient {
    background: var(--gradient-gold);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

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

/* === ANIMATIONS === */
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInLeft {
    from { opacity: 0; transform: translateX(-30px); }
    to { opacity: 1; transform: translateX(0); }
}

@keyframes fadeInRight {
    from { opacity: 0; transform: translateX(30px); }
    to { opacity: 1; transform: translateX(0); }
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

@keyframes shimmer {
    0% { background-position: -200% center; }
    100% { background-position: 200% center; }
}

@keyframes ringPulse {
    0% { box-shadow: 0 0 0 0 rgba(26, 92, 42, 0.4); }
    70% { box-shadow: 0 0 0 15px rgba(26, 92, 42, 0); }
    100% { box-shadow: 0 0 0 0 rgba(26, 92, 42, 0); }
}

.btn-pulse {
    animation: ringPulse 2s infinite;
}

[data-animate] {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

[data-animate].visible {
    opacity: 1;
    transform: translateY(0);
}

/* === HEADER === */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(15, 61, 26, 0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(200, 169, 78, 0.2);
    transition: var(--transition-normal);
    height: var(--header-height);
}

.header.scrolled {
    background: rgba(15, 61, 26, 0.98);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.2);
}

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

.header-logo {
    flex-shrink: 0;
}

.logo-img {
    height: 48px;
    width: auto;
}

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

.nav-link {
    color: rgba(255, 255, 255, 0.85);
    font-size: 0.9rem;
    font-weight: 500;
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-sm);
    transition: var(--transition-fast);
    white-space: nowrap;
}

.nav-link:hover {
    color: var(--color-gold-light);
    background: rgba(255, 255, 255, 0.1);
}

.header-hotline {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    background: var(--color-gold);
    color: var(--color-primary-dark);
    padding: var(--space-sm) var(--space-lg);
    border-radius: var(--radius-xl);
    font-weight: 700;
    font-size: 0.95rem;
    white-space: nowrap;
    transition: var(--transition-fast);
}

.header-hotline:hover {
    background: var(--color-gold-light);
    transform: scale(1.03);
}

.hotline-icon {
    font-size: 1.1rem;
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.mobile-menu-btn span {
    width: 24px;
    height: 2px;
    background: var(--color-gold);
    border-radius: 2px;
    transition: var(--transition-fast);
}

/* === MOBILE NAV OVERLAY === */
.mobile-nav-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(15, 61, 26, 0.97);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-normal);
}

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

.mobile-nav-content {
    text-align: center;
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.mobile-nav-close {
    position: absolute;
    top: var(--space-lg);
    right: var(--space-lg);
    background: none;
    border: none;
    color: var(--color-gold);
    font-size: 2.5rem;
    cursor: pointer;
    line-height: 1;
}

.mobile-nav-link {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.3rem;
    font-weight: 500;
    padding: var(--space-sm) var(--space-xl);
    border-radius: var(--radius-sm);
    transition: var(--transition-fast);
}

.mobile-nav-link:hover {
    color: var(--color-gold-light);
}

.mobile-nav-hotline {
    display: inline-block;
    margin-top: var(--space-lg);
    background: var(--color-gold);
    color: var(--color-primary-dark);
    padding: var(--space-md) var(--space-xl);
    border-radius: var(--radius-xl);
    font-weight: 700;
    font-size: 1.1rem;
}

/* === HERO SECTION === */
.hero {
    position: relative;
    background: var(--gradient-hero);
    padding-top: calc(var(--header-height) + var(--space-3xl));
    padding-bottom: var(--space-4xl);
    overflow: hidden;
    min-height: 90vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.hero-bg-pattern {
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(circle at 20% 80%, rgba(200, 169, 78, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(200, 169, 78, 0.06) 0%, transparent 50%),
        url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23c8a94e' fill-opacity='0.04'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    pointer-events: none;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    background: rgba(200, 169, 78, 0.15);
    border: 1px solid rgba(200, 169, 78, 0.3);
    color: var(--color-gold-light);
    padding: var(--space-sm) var(--space-lg);
    border-radius: var(--radius-xl);
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: var(--space-lg);
    animation: fadeInUp 0.8s ease;
}

.badge-icon {
    font-size: 1.2rem;
}

.hero-title {
    font-family: var(--font-heading);
    font-size: clamp(2.2rem, 5vw, 3.8rem);
    font-weight: 800;
    color: var(--color-text-light);
    line-height: 1.15;
    margin-bottom: var(--space-lg);
    animation: fadeInUp 0.8s ease 0.1s backwards;
}

.hero-subtitle {
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.8;
    margin-bottom: var(--space-xl);
    max-width: 520px;
    animation: fadeInUp 0.8s ease 0.2s backwards;
}

.hero-subtitle strong {
    color: var(--color-gold-light);
}

.hero-highlights {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    margin-bottom: var(--space-xl);
    animation: fadeInUp 0.8s ease 0.3s backwards;
}

.highlight-item {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    color: rgba(255, 255, 255, 0.9);
    font-size: 0.95rem;
    font-weight: 500;
}

.highlight-icon {
    font-size: 1.2rem;
}

.hero-cta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-md);
    animation: fadeInUp 0.8s ease 0.4s backwards;
}

.hero-image {
    position: relative;
    display: flex;
    justify-content: center;
    animation: fadeInRight 1s ease 0.3s backwards;
}

.hero-image-frame {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg), 0 0 60px rgba(200, 169, 78, 0.15);
    border: 3px solid rgba(200, 169, 78, 0.3);
    max-width: 480px;
}

.hero-image-frame img {
    width: 100%;
    height: auto;
    display: block;
}

.hero-floating-card {
    position: absolute;
    bottom: -20px;
    left: -30px;
    background: white;
    padding: var(--space-md) var(--space-lg);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    display: flex;
    align-items: center;
    gap: var(--space-md);
    animation: float 3s ease-in-out infinite;
}

.floating-card-icon {
    font-size: 2rem;
}

.floating-card-text strong {
    display: block;
    font-size: 0.9rem;
    color: var(--color-primary);
}

.floating-card-text span {
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

.hero-wave {
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 100%;
    line-height: 0;
}

.hero-wave svg {
    width: 100%;
    height: 80px;
}

/* === BUTTONS === */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: 14px 28px;
    border-radius: var(--radius-xl);
    font-family: var(--font-body);
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    border: none;
    transition: all var(--transition-normal);
    text-align: center;
    line-height: 1.4;
}

.btn-icon {
    font-size: 1.2rem;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--color-text-light);
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    filter: brightness(1.1);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.15);
    color: var(--color-text-light);
    border: 2px solid rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(4px);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.25);
    border-color: rgba(255, 255, 255, 0.5);
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
}

.btn-outline:hover {
    background: var(--color-primary);
    color: white;
    transform: translateY(-2px);
}

.btn-warning {
    background: linear-gradient(135deg, var(--color-danger) 0%, #e74c3c 100%);
    color: white;
    box-shadow: 0 4px 15px rgba(192, 57, 43, 0.3);
}

.btn-warning:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(192, 57, 43, 0.4);
}

.btn-zalo {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    background: var(--color-zalo);
    color: white;
    padding: 12px 24px;
    border-radius: var(--radius-xl);
    font-weight: 600;
    font-size: 1rem;
    transition: var(--transition-normal);
}

.btn-zalo:hover {
    background: #0055d4;
    transform: translateY(-2px);
}

.btn-lg {
    padding: 16px 32px;
    font-size: 1.05rem;
}

.btn-xl {
    padding: 18px 36px;
    font-size: 1.15rem;
}

/* === TRUST BAR === */
.trust-bar {
    background: var(--color-parchment);
    padding: var(--space-2xl) 0;
    position: relative;
}

.trust-grid {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2xl);
    flex-wrap: wrap;
}

.trust-item {
    text-align: center;
    padding: var(--space-md);
}

.trust-number, .trust-number-text {
    font-family: var(--font-heading);
    font-size: 2.8rem;
    font-weight: 800;
    color: var(--color-primary);
    line-height: 1.2;
}

.trust-number::after {
    content: '+';
    color: var(--color-gold);
}

.trust-label {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    font-weight: 500;
    margin-top: var(--space-xs);
}

.trust-divider {
    width: 1px;
    height: 50px;
    background: linear-gradient(to bottom, transparent, var(--color-gold), transparent);
}

/* === SECTION COMMON === */
.section {
    padding: var(--space-4xl) 0;
    position: relative;
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-3xl);
}

.section-tag {
    display: inline-block;
    background: var(--color-primary-soft);
    color: var(--color-primary);
    padding: var(--space-sm) var(--space-lg);
    border-radius: var(--radius-xl);
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: var(--space-md);
    letter-spacing: 0.5px;
}

.section-title {
    font-family: var(--font-heading);
    font-size: clamp(1.8rem, 4vw, 2.8rem);
    font-weight: 700;
    color: var(--color-primary-dark);
    line-height: 1.3;
    margin-bottom: var(--space-md);
}

.section-desc {
    font-size: 1.05rem;
    color: var(--color-text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

.section-divider {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-md);
    margin-top: var(--space-lg);
}

.section-divider::before, .section-divider::after {
    content: '';
    width: 60px;
    height: 2px;
    background: linear-gradient(to right, transparent, var(--color-gold), transparent);
}

.divider-leaf {
    font-size: 1.2rem;
}

/* === ABOUT SECTION === */
.about-section {
    background: var(--color-parchment);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    align-items: center;
}

.about-image {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.about-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    min-height: 400px;
    transition: transform 0.8s ease;
}

.about-image:hover img {
    transform: scale(1.03);
}

.about-image-badge {
    position: absolute;
    bottom: var(--space-lg);
    right: var(--space-lg);
    background: var(--color-primary);
    color: white;
    padding: var(--space-md) var(--space-lg);
    border-radius: var(--radius-md);
    text-align: center;
    box-shadow: var(--shadow-md);
}

.badge-years {
    display: block;
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 800;
    color: var(--color-gold-light);
    line-height: 1;
}

.badge-text {
    font-size: 0.75rem;
    font-weight: 500;
    opacity: 0.9;
    line-height: 1.3;
}

.about-heading {
    font-family: var(--font-heading);
    font-size: 1.6rem;
    color: var(--color-primary-dark);
    margin-bottom: var(--space-lg);
    line-height: 1.4;
}

.about-text {
    font-size: 1rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-md);
    line-height: 1.8;
}

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

.herb-list {
    background: var(--color-cream);
    border: 1px solid rgba(200, 169, 78, 0.2);
    border-radius: var(--radius-md);
    padding: var(--space-lg);
    margin: var(--space-xl) 0;
}

.herb-list-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--space-md);
}

.herb-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.herb-tag {
    display: inline-block;
    background: white;
    border: 1px solid rgba(26, 92, 42, 0.15);
    color: var(--color-primary);
    padding: 4px 14px;
    border-radius: var(--radius-xl);
    font-size: 0.85rem;
    font-weight: 500;
    transition: var(--transition-fast);
}

.herb-tag:hover {
    background: var(--color-primary);
    color: white;
    transform: translateY(-1px);
}

/* === PRODUCT SECTION === */
.product-section {
    background: var(--gradient-parchment);
    overflow: hidden;
}

.product-bg-pattern {
    position: absolute;
    inset: 0;
    background: url("data:image/svg+xml,%3Csvg width='40' height='40' viewBox='0 0 40 40' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='%231a5c2a' fill-opacity='0.02'%3E%3Cpath d='M20 20.5V18H0v-2h20v-2H0v-2h20v-2H0V8h20V6H0V4h20V2H0V0h22v20h2V0h2v20h2V0h2v20h2V0h2v20h2V0h2v22H20v-1.5z'/%3E%3C/g%3E%3C/svg%3E") repeat;
    pointer-events: none;
}

.product-showcase {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    align-items: flex-start;
    position: relative;
}

.gallery-main {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    border: 3px solid rgba(200, 169, 78, 0.2);
    margin-bottom: var(--space-md);
    background: white;
}

.gallery-main img {
    width: 100%;
    height: auto;
    object-fit: cover;
    transition: opacity 0.3s ease;
}

.gallery-thumbs {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: var(--space-sm);
}

.thumb {
    border-radius: var(--radius-sm);
    overflow: hidden;
    cursor: pointer;
    border: 2px solid transparent;
    transition: var(--transition-fast);
    opacity: 0.6;
}

.thumb.active {
    border-color: var(--color-primary);
    opacity: 1;
}

.thumb:hover {
    opacity: 1;
    transform: translateY(-2px);
}

.thumb img {
    width: 100%;
    height: 60px;
    object-fit: cover;
}

.product-name-tag {
    display: inline-block;
    background: var(--color-primary-soft);
    color: var(--color-primary);
    padding: 4px 16px;
    border-radius: var(--radius-xl);
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: var(--space-md);
}

.product-name {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    color: var(--color-primary-dark);
    margin-bottom: var(--space-xl);
    line-height: 1.3;
}

.product-price-box {
    background: linear-gradient(135deg, var(--color-cream) 0%, #fff 100%);
    border: 2px solid var(--color-gold);
    border-radius: var(--radius-md);
    padding: var(--space-lg);
    margin-bottom: var(--space-xl);
    text-align: center;
}

.price-label {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-sm);
}

.price-amount {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--color-danger);
    line-height: 1.2;
}

.price-currency {
    font-size: 1.2rem;
    font-weight: 600;
    margin-left: 4px;
}

.price-detail {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    margin-top: var(--space-xs);
}

.product-features {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    margin-bottom: var(--space-xl);
}

.feature-item {
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
    padding: var(--space-md);
    background: white;
    border-radius: var(--radius-md);
    border: 1px solid rgba(26, 92, 42, 0.08);
    transition: var(--transition-fast);
}

.feature-item:hover {
    border-color: rgba(26, 92, 42, 0.2);
    box-shadow: var(--shadow-sm);
    transform: translateX(4px);
}

.feature-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
    margin-top: 2px;
}

.feature-text strong {
    display: block;
    font-size: 0.95rem;
    color: var(--color-primary-dark);
    margin-bottom: 2px;
}

.feature-text span {
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

.product-cta-group {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-md);
}

/* === BENEFITS SECTION === */
.benefits-section {
    background: white;
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
}

.benefit-card {
    background: var(--color-parchment);
    border: 1px solid rgba(200, 169, 78, 0.15);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    text-align: center;
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.benefit-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: transform var(--transition-normal);
}

.benefit-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-primary-light);
}

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

.benefit-icon {
    font-size: 2.5rem;
    margin-bottom: var(--space-md);
}

.benefit-title {
    font-family: var(--font-heading);
    font-size: 1.15rem;
    color: var(--color-primary-dark);
    margin-bottom: var(--space-sm);
}

.benefit-desc {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* === GUIDE SECTION === */
.guide-section {
    background: var(--color-parchment);
    overflow: hidden;
}

.guide-bg-pattern {
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 10% 50%, rgba(26, 92, 42, 0.03) 0%, transparent 50%),
                radial-gradient(circle at 90% 50%, rgba(200, 169, 78, 0.05) 0%, transparent 50%);
    pointer-events: none;
}

.guide-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
    margin-bottom: var(--space-3xl);
}

.guide-card {
    background: white;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid rgba(26, 92, 42, 0.08);
    transition: var(--transition-normal);
}

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

.guide-card-header {
    background: var(--gradient-primary);
    padding: var(--space-lg);
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.guide-card-icon {
    font-size: 2rem;
}

.guide-card-header h3 {
    color: white;
    font-family: var(--font-heading);
    font-size: 1.15rem;
}

.guide-card-body {
    padding: var(--space-lg);
}

.guide-card-body p {
    font-size: 0.95rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-sm);
}

.guide-alt {
    font-style: italic;
    color: var(--color-text-muted) !important;
    font-size: 0.88rem !important;
}

.guide-note {
    display: flex;
    align-items: flex-start;
    gap: var(--space-sm);
    background: #fff3cd;
    padding: var(--space-md);
    border-radius: var(--radius-sm);
    margin-top: var(--space-md);
    font-size: 0.85rem;
    color: #856404;
    border-left: 3px solid #ffc107;
}

.guide-note-success {
    background: #d4edda;
    color: #155724;
    border-left-color: var(--color-success);
}

.note-icon {
    flex-shrink: 0;
    font-size: 1rem;
}

/* Caution Box */
.caution-box {
    background: white;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    border: 1px solid rgba(230, 126, 34, 0.2);
}

.caution-header {
    background: linear-gradient(135deg, #fff3cd 0%, #ffeaa7 100%);
    padding: var(--space-lg) var(--space-xl);
    display: flex;
    align-items: center;
    gap: var(--space-md);
    border-bottom: 2px solid rgba(200, 169, 78, 0.3);
}

.caution-icon {
    font-size: 1.8rem;
}

.caution-header h3 {
    font-family: var(--font-heading);
    font-size: 1.2rem;
    color: var(--color-brown);
}

.caution-grid {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 0;
}

.caution-col {
    padding: var(--space-xl);
    border-right: 1px solid rgba(0, 0, 0, 0.06);
}

.caution-col:last-child {
    border-right: none;
}

.caution-subtitle {
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: var(--space-md);
    color: var(--color-brown);
}

.caution-list li {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    padding: 4px 0;
    padding-left: var(--space-lg);
    position: relative;
}

.caution-list li::before {
    content: '•';
    position: absolute;
    left: 6px;
    color: var(--color-danger);
    font-weight: bold;
}

.caution-list-positive li::before {
    content: '✓';
    color: var(--color-success);
    font-size: 0.8rem;
}

.caution-positive .caution-subtitle {
    color: var(--color-success);
}

/* === TESTIMONIALS === */
.testimonials-section {
    background: white;
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-xl);
    margin-bottom: var(--space-2xl);
}

.testimonial-card {
    background: var(--color-parchment);
    border: 1px solid rgba(200, 169, 78, 0.15);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    transition: var(--transition-normal);
    position: relative;
}

.testimonial-card::before {
    content: '"';
    position: absolute;
    top: var(--space-md);
    right: var(--space-lg);
    font-family: var(--font-heading);
    font-size: 4rem;
    color: rgba(200, 169, 78, 0.2);
    line-height: 1;
}

.testimonial-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--color-gold);
}

.testimonial-stars {
    font-size: 1rem;
    margin-bottom: var(--space-md);
    letter-spacing: 2px;
}

.testimonial-text {
    font-size: 0.95rem;
    color: var(--color-text-secondary);
    line-height: 1.8;
    margin-bottom: var(--space-lg);
    font-style: italic;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.testimonial-avatar {
    width: 48px;
    height: 48px;
    background: var(--gradient-primary);
    color: white;
    border-radius: var(--radius-round);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-heading);
    font-size: 1.2rem;
    font-weight: 700;
    flex-shrink: 0;
}

.testimonial-info strong {
    display: block;
    font-size: 0.95rem;
    color: var(--color-primary-dark);
}

.testimonial-info span {
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

.testimonial-link-wrap {
    text-align: center;
}

/* === WARNING SECTION === */
.warning-section {
    background: var(--color-parchment);
    padding: var(--space-3xl) 0;
}

.warning-box {
    background: linear-gradient(135deg, #fff5f5 0%, #ffe8e8 100%);
    border: 2px solid rgba(192, 57, 43, 0.2);
    border-radius: var(--radius-lg);
    padding: var(--space-2xl) var(--space-3xl);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.warning-box::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(to right, var(--color-danger), var(--color-warning), var(--color-danger));
}

.warning-icon-large {
    font-size: 3rem;
    margin-bottom: var(--space-md);
}

.warning-title {
    font-family: var(--font-heading);
    font-size: 1.6rem;
    color: var(--color-danger);
    margin-bottom: var(--space-md);
}

.warning-text {
    font-size: 1rem;
    color: var(--color-text-secondary);
    max-width: 700px;
    margin: 0 auto var(--space-xl);
    line-height: 1.8;
}

.warning-contact p {
    font-size: 0.95rem;
    margin-bottom: var(--space-md);
    color: var(--color-text);
}

/* === CONTACT SECTION === */
.contact-section {
    background: var(--gradient-hero);
    position: relative;
    overflow: hidden;
}

.contact-bg-pattern {
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(circle at 30% 70%, rgba(200, 169, 78, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 70% 30%, rgba(200, 169, 78, 0.06) 0%, transparent 50%);
    pointer-events: none;
}

.section-header-light .section-tag-light {
    background: rgba(200, 169, 78, 0.2);
    color: var(--color-gold-light);
}

.section-title-light {
    color: var(--color-text-light) !important;
}

.section-desc-light {
    color: rgba(255, 255, 255, 0.7) !important;
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
    margin-bottom: var(--space-2xl);
    position: relative;
    z-index: 1;
}

.contact-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    text-align: center;
    transition: var(--transition-normal);
}

.contact-card:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-4px);
    border-color: rgba(200, 169, 78, 0.3);
}

.contact-card-icon {
    font-size: 2.5rem;
    margin-bottom: var(--space-md);
}

.contact-card h3 {
    font-family: var(--font-heading);
    color: var(--color-gold-light);
    font-size: 1.2rem;
    margin-bottom: var(--space-sm);
}

.contact-card p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9rem;
    margin-bottom: var(--space-lg);
    line-height: 1.6;
}

.contact-phone {
    display: inline-block;
    font-family: var(--font-heading);
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--color-gold);
    letter-spacing: 1px;
    transition: var(--transition-fast);
}

.contact-phone:hover {
    color: var(--color-gold-light);
    transform: scale(1.05);
}

.contact-address {
    font-style: normal;
    color: rgba(255, 255, 255, 0.9);
    font-size: 1rem;
    line-height: 1.6;
}

.order-summary-box {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 2px solid rgba(200, 169, 78, 0.3);
    border-radius: var(--radius-lg);
    padding: var(--space-2xl);
    text-align: center;
    position: relative;
    z-index: 1;
}

.order-summary-title {
    font-family: var(--font-heading);
    color: var(--color-gold-light);
    font-size: 1.4rem;
    margin-bottom: var(--space-xl);
}

.order-summary-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-lg);
    margin-bottom: var(--space-xl);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.order-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-md) var(--space-lg);
    background: rgba(255, 255, 255, 0.07);
    border-radius: var(--radius-md);
}

.order-label {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.7);
}

.order-value {
    font-weight: 700;
    color: white;
    font-size: 0.95rem;
}

.order-value-price {
    color: var(--color-gold-light);
    font-size: 1.1rem;
}

.order-value-free {
    color: #2ecc71;
}

.order-cta {
    margin-top: var(--space-lg);
}

/* === FOOTER === */
.footer {
    background: #0a2914;
    color: rgba(255, 255, 255, 0.7);
    padding: var(--space-3xl) 0 var(--space-lg);
}

.footer-content {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr;
    gap: var(--space-2xl);
    margin-bottom: var(--space-2xl);
}

.footer-logo-wrap {
    margin-bottom: var(--space-lg);
}

.footer-logo-img {
    height: 50px;
    width: auto;
}

.footer-desc {
    font-size: 0.9rem;
    line-height: 1.7;
    color: rgba(255, 255, 255, 0.6);
}

.footer-nav h4, .footer-contact h4 {
    font-family: var(--font-heading);
    color: var(--color-gold);
    font-size: 1rem;
    margin-bottom: var(--space-lg);
}

.footer-nav a {
    display: block;
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.9rem;
    padding: 4px 0;
    transition: var(--transition-fast);
}

.footer-nav a:hover {
    color: var(--color-gold-light);
    transform: translateX(4px);
}

.footer-contact-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-sm);
    font-size: 0.9rem;
}

.footer-contact-item a:hover {
    color: var(--color-gold-light);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--space-lg);
    text-align: center;
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.4);
}

/* === FLOATING CTA === */
.floating-cta {
    position: fixed;
    bottom: var(--space-xl);
    right: var(--space-xl);
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    z-index: 900;
}

.floating-btn {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-round);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    box-shadow: var(--shadow-lg);
    transition: var(--transition-normal);
}

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

.floating-phone {
    background: var(--color-primary);
    color: white;
}

.floating-zalo {
    background: var(--color-zalo);
    color: white;
}

/* === BACK TO TOP === */
.back-to-top {
    position: fixed;
    bottom: var(--space-xl);
    left: var(--space-xl);
    width: 44px;
    height: 44px;
    background: var(--color-primary);
    color: white;
    border: none;
    border-radius: var(--radius-round);
    font-size: 1.2rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-normal);
    z-index: 900;
    box-shadow: var(--shadow-md);
}

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

.back-to-top:hover {
    background: var(--color-primary-light);
    transform: translateY(-3px);
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */

/* Tablet */
@media (max-width: 1024px) {
    .header-nav {
        display: none;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-subtitle {
        margin-left: auto;
        margin-right: auto;
    }

    .hero-highlights {
        align-items: center;
    }

    .hero-cta {
        justify-content: center;
    }

    .hero-image {
        max-width: 400px;
        margin: 0 auto;
    }

    .hero-floating-card {
        left: 50%;
        transform: translateX(-50%);
        bottom: -15px;
        animation: none;
    }

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

    .about-image img {
        min-height: 300px;
    }

    .product-showcase {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
    }

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

    .guide-cards {
        grid-template-columns: 1fr;
    }

    .caution-grid {
        grid-template-columns: 1fr;
    }

    .caution-col {
        border-right: none;
        border-bottom: 1px solid rgba(0, 0, 0, 0.06);
    }

    .caution-col:last-child {
        border-bottom: none;
    }

    .testimonials-grid {
        grid-template-columns: 1fr;
    }

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

    .order-summary-grid {
        grid-template-columns: 1fr;
    }

    .footer-content {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-xl);
    }

    .footer-brand {
        grid-column: 1 / -1;
    }
}

/* Mobile */
@media (max-width: 768px) {
    :root {
        --header-height: 64px;
    }

    .container {
        padding: 0 var(--space-md);
    }

    .logo-img {
        height: 38px;
    }

    .header-hotline {
        display: none;
    }

    .section {
        padding: var(--space-2xl) 0;
    }

    .hero {
        min-height: auto;
        padding-top: calc(var(--header-height) + var(--space-xl));
        padding-bottom: var(--space-3xl);
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 0.95rem;
    }

    .hero-cta {
        flex-direction: column;
        align-items: center;
    }

    .hero-cta .btn {
        width: 100%;
        max-width: 320px;
    }

    .hero-image-frame {
        max-width: 100%;
    }

    .hero-floating-card {
        display: none;
    }

    .section-title {
        font-size: 1.6rem;
    }

    .trust-grid {
        gap: var(--space-md);
    }

    .trust-number, .trust-number-text {
        font-size: 2rem;
    }

    .trust-divider {
        display: none;
    }

    .trust-item {
        flex: 1 1 40%;
    }

    .about-image img {
        min-height: 250px;
    }

    .gallery-thumbs {
        grid-template-columns: repeat(6, 1fr);
    }

    .thumb img {
        height: 45px;
    }

    .product-name {
        font-size: 1.4rem;
    }

    .price-amount {
        font-size: 2rem;
    }

    .product-cta-group {
        flex-direction: column;
    }

    .product-cta-group .btn {
        width: 100%;
    }

    .benefits-grid {
        grid-template-columns: 1fr;
    }

    .benefit-card {
        text-align: left;
        display: flex;
        align-items: flex-start;
        gap: var(--space-md);
    }

    .benefit-icon {
        margin-bottom: 0;
        flex-shrink: 0;
    }

    .warning-box {
        padding: var(--space-xl);
    }

    .warning-title {
        font-size: 1.3rem;
    }

    .order-summary-box {
        padding: var(--space-lg);
    }

    .order-info {
        flex-direction: column;
        text-align: center;
        gap: var(--space-xs);
        padding: var(--space-md);
    }

    .floating-cta {
        bottom: var(--space-lg);
        right: var(--space-md);
    }

    .floating-btn {
        width: 50px;
        height: 50px;
        font-size: 1.3rem;
    }

    .back-to-top {
        left: var(--space-md);
        width: 40px;
        height: 40px;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
    }

    .contact-phone {
        font-size: 1.4rem;
    }
}

/* Small mobile */
@media (max-width: 480px) {
    .hero-title {
        font-size: 1.7rem;
    }

    .hero-badge {
        font-size: 0.8rem;
    }

    .btn {
        padding: 12px 20px;
        font-size: 0.9rem;
    }

    .btn-lg {
        padding: 14px 24px;
        font-size: 0.95rem;
    }

    .btn-xl {
        padding: 16px 28px;
        font-size: 1rem;
    }

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

    .thumb img {
        height: 55px;
    }

    .trust-grid {
        flex-direction: column;
    }

    .trust-item {
        flex: none;
    }
}

/* Print */
@media print {
    .header, .floating-cta, .back-to-top, .mobile-nav-overlay {
        display: none !important;
    }

    .hero {
        padding-top: var(--space-xl);
    }

    body {
        font-size: 12pt;
    }
}