/* -------------------------------------------------------------
   Goebai Việt Nam - Main Stylesheet
   Created with Premium Design System (Outfit Font, Emerald & Amber Palette)
   ------------------------------------------------------------- */

/* Reset & Variables */
:root {
    --primary: #059669; /* Emerald Green */
    --primary-hover: #047857;
    --secondary: #fbbf24; /* Warm Gold */
    --secondary-hover: #f59e0b;
    --dark: #0f172a; /* Slate 900 */
    --dark-light: #1e293b; /* Slate 800 */
    --light: #f8fafc; /* Slate 50 */
    --text-main: #334155; /* Slate 700 */
    --text-muted: #64748b; /* Slate 500 */
    --white: #ffffff;
    --border-color: #e2e8f0;
    --glass-bg: rgba(255, 255, 255, 0.7);
    --glass-border: rgba(255, 255, 255, 0.4);
    --shadow-sm: 0 2px 4px rgba(15, 23, 42, 0.05);
    --shadow-md: 0 10px 15px -3px rgba(15, 23, 42, 0.08), 0 4px 6px -2px rgba(15, 23, 42, 0.04);
    --shadow-lg: 0 20px 25px -5px rgba(15, 23, 42, 0.1), 0 10px 10px -5px rgba(15, 23, 42, 0.04);
    --font-sans: 'Be Vietnam Pro', sans-serif;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-sans);
    background-color: var(--light);
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Utilities */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

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

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

.text-green { color: var(--primary); }
.color-accent { color: var(--secondary-hover); font-weight: 700; }

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 28px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    outline: none;
}

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

.btn-primary:hover {
    background-color: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(5, 150, 105, 0.2);
}

.btn-secondary {
    background-color: var(--secondary);
    color: var(--dark);
}

.btn-secondary:hover {
    background-color: var(--secondary-hover);
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(251, 191, 36, 0.3);
}

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

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

.btn-block {
    display: flex;
    width: 100%;
}

.btn-lg {
    padding: 16px 36px;
    font-size: 1.05rem;
}

/* Confetti Canvas */
#confetti-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 9999;
    pointer-events: none;
}

/* Header & Navigation */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--glass-border);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.header.scrolled {
    padding: 8px 0;
    background: rgba(255, 255, 255, 0.95);
    box-shadow: var(--shadow-md);
}

.header-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
    transition: var(--transition);
}

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

.nav-menu {
    display: flex;
    gap: 32px;
}

.nav-link {
    font-weight: 550;
    font-size: 0.95rem;
    color: var(--text-main);
    position: relative;
    padding: 8px 0;
}

.nav-link:hover, .nav-link.active {
    color: var(--primary);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary);
    transition: var(--transition);
}

.nav-link:hover::after, .nav-link.active::after {
    width: 100%;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 20px;
}

.phone-link {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 700;
    color: var(--primary);
    background: rgba(5, 150, 105, 0.08);
    padding: 10px 16px;
    border-radius: 30px;
}

.icon-phone {
    width: 18px;
    height: 18px;
    animation: phone-bounce 1.5s infinite;
}

@keyframes phone-bounce {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1) rotate(5deg); }
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 6px;
    border: none;
    background: none;
    cursor: pointer;
    padding: 4px;
}

.hamburger span {
    display: block;
    width: 25px;
    height: 3px;
    background-color: var(--dark);
    border-radius: 3px;
    transition: var(--transition);
}

/* Hero Section */
.hero {
    position: relative;
    padding-top: 140px;
    padding-bottom: 80px;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    color: var(--white);
    overflow: hidden;
}

.hero-bg-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: radial-gradient(circle at 80% 20%, rgba(5, 150, 105, 0.15) 0%, transparent 50%);
    pointer-events: none;
}

.hero-container {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 48px;
    align-items: center;
}

.badge-promo {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(251, 191, 36, 0.12);
    border: 1px solid rgba(251, 191, 36, 0.3);
    color: var(--secondary);
    padding: 8px 16px;
    border-radius: 30px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 24px;
    letter-spacing: 0.5px;
}

.pulse-dot {
    width: 8px;
    height: 8px;
    background-color: var(--secondary);
    border-radius: 50%;
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0% { transform: scale(0.9); box-shadow: 0 0 0 0 rgba(251, 191, 36, 0.7); }
    70% { transform: scale(1); box-shadow: 0 0 0 8px rgba(251, 191, 36, 0); }
    100% { transform: scale(0.9); box-shadow: 0 0 0 0 rgba(251, 191, 36, 0); }
}

.hero-content h1 {
    font-size: 3rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 20px;
    background: linear-gradient(135deg, #ffffff 40%, var(--secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-desc {
    font-size: 1.1rem;
    color: rgba(248, 250, 252, 0.8);
    margin-bottom: 32px;
}

.countdown-wrapper {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: 16px 24px;
    border-radius: 16px;
    margin-bottom: 32px;
    max-width: 450px;
}

.countdown-title {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: 12px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.countdown-timer {
    display: flex;
    gap: 16px;
}

.time-block {
    display: flex;
    flex-direction: column;
    align-items: center;
    background: rgba(255, 255, 255, 0.08);
    padding: 8px 16px;
    border-radius: 10px;
    min-width: 70px;
}

.time-block span {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--secondary);
}

.time-block label {
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.5);
    text-transform: uppercase;
}

.hero-actions {
    display: flex;
    gap: 16px;
    margin-bottom: 40px;
}

.btn-outline {
    border-color: rgba(255, 255, 255, 0.3);
    color: var(--white);
}

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

.hero-trust {
    display: flex;
    gap: 24px;
    flex-wrap: wrap;
}

.trust-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.7);
}

.icon-trust {
    width: 18px;
    height: 18px;
    color: var(--primary);
}

/* Interactive Contrast Slider in Hero */
.hero-image-wrapper {
    position: relative;
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.image-contrast-slider {
    position: relative;
    width: 100%;
    aspect-ratio: 1 / 1;
    max-width: 450px;
    border-radius: 24px;
    overflow: hidden;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    border: 4px solid rgba(255, 255, 255, 0.1);
}

.slider-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
}

.day-img {
    z-index: 2;
    border-right: 1px solid rgba(255, 255, 255, 0.5);
}

.slider-handle {
    position: absolute;
    top: 0;
    bottom: 0;
    left: 50%;
    width: 0;
    z-index: 3;
    cursor: ew-resize;
}

.slider-line {
    position: absolute;
    top: 0;
    bottom: 0;
    left: -2px;
    width: 4px;
    background-color: var(--white);
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.5);
}

.slider-button {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 44px;
    height: 44px;
    background-color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
    color: var(--dark);
}

.slider-button svg {
    width: 24px;
    height: 24px;
}

.slider-label {
    margin-top: 16px;
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.5);
    font-style: italic;
}

/* Key Benefits Section */
.benefits {
    padding: 100px 0;
    background-color: var(--white);
}

.section-title {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 60px;
}

.section-title h2 {
    font-size: 2.25rem;
    font-weight: 800;
    color: var(--dark);
    margin-bottom: 16px;
}

.section-title p {
    font-size: 1.1rem;
    color: var(--text-muted);
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 32px;
}

.benefit-card {
    background-color: var(--light);
    border: 1px solid var(--border-color);
    padding: 40px 32px;
    border-radius: 20px;
    transition: var(--transition);
}

.benefit-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(5, 150, 105, 0.2);
}

.benefit-icon {
    width: 60px;
    height: 60px;
    background-color: rgba(5, 150, 105, 0.1);
    color: var(--primary);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
}

.benefit-icon svg {
    width: 32px;
    height: 32px;
}

.benefit-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 12px;
}

.benefit-card p {
    font-size: 0.95rem;
    color: var(--text-muted);
}

/* Savings Calculator Section */
.calculator-section {
    padding: 100px 0;
    background: linear-gradient(135deg, #f1f5f9 0%, #e2e8f0 100%);
}

.calculator-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 60px;
    align-items: center;
}

.calc-info h2 {
    font-size: 2.25rem;
    font-weight: 800;
    color: var(--dark);
    margin-bottom: 16px;
}

.calc-info p {
    font-size: 1.1rem;
    color: var(--text-muted);
    margin-bottom: 32px;
}

.calc-inputs {
    background-color: var(--white);
    padding: 32px;
    border-radius: 20px;
    box-shadow: var(--shadow-md);
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.input-group label {
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--dark);
}

.input-group input[type="number"], .input-group select {
    padding: 12px 16px;
    border-radius: 10px;
    border: 1.5px solid var(--border-color);
    font-family: var(--font-sans);
    font-size: 1rem;
    outline: none;
    transition: var(--transition);
}

.input-group input[type="number"]:focus, .input-group select:focus {
    border-color: var(--primary);
}

.input-group input[type="range"] {
    width: 100%;
    accent-color: var(--primary);
}

.range-value {
    font-weight: 600;
    color: var(--primary);
    font-size: 0.95rem;
}

.calc-result-card {
    background-color: var(--dark);
    color: var(--white);
    padding: 40px;
    border-radius: 24px;
    box-shadow: var(--shadow-lg);
    display: flex;
    flex-direction: column;
}

.calc-result-card h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 28px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding-bottom: 16px;
}

.result-items {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-bottom: 32px;
}

.result-item {
    display: flex;
    justify-content: space-between;
    font-size: 1.05rem;
}

.result-item.highlight {
    background: rgba(255, 255, 255, 0.05);
    padding: 16px;
    border-radius: 12px;
    border-left: 4px solid var(--secondary);
}

.res-label {
    color: rgba(255, 255, 255, 0.7);
}

.res-val {
    font-weight: 700;
}

.calc-suggestion {
    background-color: rgba(5, 150, 105, 0.15);
    border: 1px dashed var(--primary);
    color: #34d399;
    padding: 12px 16px;
    border-radius: 10px;
    font-size: 0.9rem;
    font-weight: 600;
    text-align: center;
    margin-bottom: 24px;
}

/* Products Section */
.products-section {
    padding: 100px 0;
    background-color: var(--white);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 32px;
}

.product-card {
    background-color: var(--light);
    border: 1px solid var(--border-color);
    border-radius: 24px;
    overflow: hidden;
    position: relative;
    display: flex;
    flex-direction: column;
    transition: var(--transition);
}

.product-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(5, 150, 105, 0.2);
}

.badge-hot {
    position: absolute;
    top: 16px;
    left: 16px;
    background-color: #ef4444;
    color: var(--white);
    padding: 6px 12px;
    border-radius: 30px;
    font-size: 0.75rem;
    font-weight: 700;
    z-index: 10;
}

.product-img-wrapper {
    aspect-ratio: 1 / 1;
    background-color: var(--white);
    padding: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-bottom: 1px solid var(--border-color);
}

.product-img-wrapper img {
    max-height: 100%;
    object-fit: contain;
    transition: var(--transition);
}

.product-card:hover .product-img-wrapper img {
    transform: scale(1.05);
}

.product-info {
    padding: 28px;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.product-info h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 12px;
    line-height: 1.4;
    height: 56px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.product-desc {
    font-size: 0.88rem;
    color: var(--text-muted);
    margin-bottom: 20px;
    height: 40px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.product-specs {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 24px;
    background-color: var(--white);
    padding: 16px;
    border-radius: 12px;
    font-size: 0.85rem;
    border: 1px solid var(--border-color);
}

.product-specs li {
    display: flex;
    justify-content: space-between;
}

.product-price-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
}

.prices {
    display: flex;
    flex-direction: column;
}

.old-price {
    font-size: 0.9rem;
    text-decoration: line-through;
    color: var(--text-muted);
}

.new-price {
    font-size: 1.35rem;
    font-weight: 800;
    color: var(--primary);
}

.discount-pill {
    background-color: rgba(239, 68, 68, 0.1);
    color: #ef4444;
    padding: 4px 10px;
    border-radius: 6px;
    font-size: 0.8rem;
    font-weight: 700;
}

/* Interactive Combo Builder */
.combo-section {
    padding: 100px 0;
    background: linear-gradient(135deg, #e2e8f0 0%, #cbd5e1 100%);
}

.combo-grid {
    display: grid;
    grid-template-columns: 1.12fr 1fr;
    gap: 40px;
}

.combo-selector-card {
    background-color: var(--white);
    padding: 32px;
    border-radius: 24px;
    box-shadow: var(--shadow-md);
}

.combo-selector-card h3 {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 24px;
}

.combo-selector-items {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.combo-select-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px;
    border: 1.5px solid var(--border-color);
    border-radius: 16px;
    transition: var(--transition);
}

.combo-select-item.selected {
    border-color: var(--primary);
    background-color: rgba(5, 150, 105, 0.03);
}

.item-check {
    width: 20px;
    height: 20px;
    accent-color: var(--primary);
    cursor: pointer;
}

.item-thumb {
    width: 60px;
    height: 60px;
    object-fit: contain;
    background: var(--light);
    border-radius: 8px;
    padding: 4px;
}

.item-details {
    flex-grow: 1;
}

.item-details h4 {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--dark);
    line-height: 1.3;
}

.item-price {
    font-weight: 600;
    color: var(--primary);
    font-size: 0.9rem;
    margin-top: 4px;
}

.item-qty-control {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--light);
    border-radius: 8px;
    padding: 4px;
    border: 1px solid var(--border-color);
}

.btn-qty {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--white);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    cursor: pointer;
    font-weight: 700;
    font-size: 0.9rem;
    transition: var(--transition);
}

.btn-qty:hover {
    background: var(--primary);
    color: var(--white);
    border-color: var(--primary);
}

.qty-val {
    font-weight: 700;
    font-size: 0.9rem;
    width: 24px;
    text-align: center;
}

/* Pricing Card Right */
.combo-pricing-card {
    background-color: var(--white);
    padding: 32px;
    border-radius: 24px;
    box-shadow: var(--shadow-lg);
    border: 2px solid var(--primary);
    position: sticky;
    top: 100px;
}

.combo-pricing-card h3 {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 20px;
}

.selected-summary-list {
    min-height: 60px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 20px;
}

.empty-text {
    color: var(--text-muted);
    font-size: 0.9rem;
    font-style: italic;
    text-align: center;
    padding: 12px;
}

.summary-item {
    display: flex;
    justify-content: space-between;
    font-size: 0.9rem;
}

.summary-item-name {
    font-weight: 550;
    max-width: 70%;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.pricing-divider {
    height: 1px;
    background-color: var(--border-color);
    margin: 16px 0;
}

.pricing-row {
    display: flex;
    justify-content: space-between;
    font-size: 1rem;
    margin-bottom: 12px;
}

.old-price-total {
    text-decoration: line-through;
    color: var(--text-muted);
}

.discount-row {
    color: #ef4444;
    font-weight: 600;
}

.grand-total-row {
    font-size: 1.2rem;
    font-weight: 800;
    color: var(--dark);
    margin-top: 12px;
}

.grand-total-val {
    color: var(--primary);
    font-size: 1.4rem;
}

/* Gift Announcement */
.gift-announcement {
    display: flex;
    align-items: center;
    gap: 12px;
    background-color: rgba(251, 191, 36, 0.08);
    border: 1px dashed var(--secondary-hover);
    padding: 12px 16px;
    border-radius: 12px;
    margin-bottom: 24px;
    animation: bounce-gift 2s infinite;
}

@keyframes bounce-gift {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-4px); }
}

.gift-icon {
    font-size: 1.5rem;
}

.gift-text {
    font-size: 0.88rem;
    font-weight: 700;
    color: var(--secondary-hover);
}

/* Smart Order Form */
.order-form-wrapper {
    margin-top: 24px;
}

.order-form-wrapper h4 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 16px;
}

.form-group {
    margin-bottom: 16px;
}

.form-group input {
    width: 100%;
    padding: 12px 16px;
    border-radius: 10px;
    border: 1.5px solid var(--border-color);
    font-family: var(--font-sans);
    outline: none;
    font-size: 0.95rem;
    transition: var(--transition);
}

.form-group input:focus {
    border-color: var(--primary);
}

/* Order Bump */
.order-bump-box {
    background-color: rgba(5, 150, 105, 0.04);
    border: 2px dashed rgba(5, 150, 105, 0.3);
    padding: 16px;
    border-radius: 12px;
    margin-bottom: 20px;
    cursor: pointer;
    transition: var(--transition);
}

.order-bump-box:hover {
    background-color: rgba(5, 150, 105, 0.08);
    border-color: var(--primary);
}

.bump-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 8px;
}

.bump-header input {
    width: 18px;
    height: 18px;
    accent-color: var(--primary);
}

.bump-label {
    font-weight: 700;
    font-size: 0.9rem;
    color: var(--dark);
    cursor: pointer;
}

.bump-tag {
    display: inline-block;
    background-color: #ef4444;
    color: var(--white);
    font-size: 0.65rem;
    padding: 2px 6px;
    border-radius: 4px;
    margin-right: 6px;
    animation: flash-tag 1s infinite alternate;
}

@keyframes flash-tag {
    0% { opacity: 0.7; }
    100% { opacity: 1; }
}

.bump-desc {
    font-size: 0.8rem;
    color: var(--text-muted);
    padding-left: 28px;
    line-height: 1.4;
}

.btn-order-submit {
    height: 52px;
    font-size: 1.05rem;
    letter-spacing: 0.5px;
}

.form-note {
    font-size: 0.78rem;
    color: var(--text-muted);
    text-align: center;
    margin-top: 12px;
}

/* Why Choose Section */
.why-choose {
    padding: 100px 0;
    background-color: var(--white);
}

.why-choose-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 60px;
    align-items: center;
}

.why-img {
    border-radius: 24px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.why-content h2 {
    font-size: 2.25rem;
    font-weight: 800;
    color: var(--dark);
    margin-bottom: 20px;
}

.lead-text {
    font-size: 1.15rem;
    font-weight: 550;
    color: var(--primary);
    margin-bottom: 32px;
}

.why-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 28px;
}

.why-list li {
    display: flex;
    gap: 20px;
}

.bullet-num {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background-color: rgba(5, 150, 105, 0.1);
    color: var(--primary);
    font-weight: 800;
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.why-list h4 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 8px;
}

.why-list p {
    font-size: 0.95rem;
    color: var(--text-muted);
}

/* Reviews Section */
.reviews {
    padding: 100px 0;
    background-color: var(--light);
}

.reviews-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 32px;
}

.review-card {
    background-color: var(--white);
    padding: 40px;
    border-radius: 20px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: var(--transition);
}

.review-card:hover {
    box-shadow: var(--shadow-md);
}

.review-rating {
    margin-bottom: 20px;
}

.review-text {
    font-size: 0.98rem;
    font-style: italic;
    color: var(--text-main);
    margin-bottom: 24px;
    line-height: 1.6;
}

.review-author {
    display: flex;
    flex-direction: column;
}

.review-author strong {
    color: var(--dark);
    font-size: 0.95rem;
}

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

/* FAQs Section */
.faqs {
    padding: 100px 0;
    background-color: var(--white);
}

.faq-accordion {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.faq-item {
    border: 1.5px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
    transition: var(--transition);
}

.faq-question {
    width: 100%;
    padding: 20px 24px;
    background: none;
    border: none;
    outline: none;
    text-align: left;
    font-family: var(--font-sans);
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--dark);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.faq-question span {
    font-size: 1.5rem;
    color: var(--primary);
    transition: var(--transition);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s cubic-bezier(0, 1, 0, 1);
    background-color: var(--light);
}

.faq-answer p {
    padding: 20px 24px;
    font-size: 0.95rem;
    color: var(--text-muted);
    line-height: 1.6;
}

.faq-item.active {
    border-color: var(--primary);
}

.faq-item.active .faq-question span {
    transform: rotate(45deg);
}

.faq-item.active .faq-answer {
    max-height: 300px;
    transition: max-height 0.3s cubic-bezier(1, 0, 1, 0);
}

/* Footer Section */
.footer {
    background-color: var(--dark);
    color: rgba(255, 255, 255, 0.7);
    padding-top: 80px;
    border-top: 4px solid var(--primary);
}

.footer-container {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr 1.2fr;
    gap: 60px;
    padding-bottom: 60px;
}

.footer-logo {
    height: 52px;
    width: auto;
    object-fit: contain;
    margin-bottom: 24px;
}

.footer-info p {
    font-size: 0.9rem;
    line-height: 1.6;
}

.footer-links h4, .footer-contact h4 {
    color: var(--white);
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 24px;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-links a {
    font-size: 0.9rem;
}

.footer-links a:hover {
    color: var(--primary);
    transform: translateX(4px);
}

.footer-contact {
    display: flex;
    flex-direction: column;
    gap: 12px;
    font-size: 0.9rem;
}

.footer-contact strong {
    color: var(--white);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding: 24px 0;
    text-align: center;
    font-size: 0.8rem;
}

/* Modal Confirmation */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(15, 23, 42, 0.6);
    backdrop-filter: blur(8px);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.modal-overlay.active {
    opacity: 1;
    pointer-events: auto;
}

.modal-card {
    background-color: var(--white);
    border-radius: 24px;
    width: 90%;
    max-width: 500px;
    padding: 40px;
    box-shadow: var(--shadow-lg);
    text-align: center;
    transform: scale(0.9);
    transition: transform 0.3s ease;
    border: 1px solid var(--border-color);
}

.modal-overlay.active .modal-card {
    transform: scale(1);
}

.modal-success-icon {
    width: 72px;
    height: 72px;
    background-color: rgba(5, 150, 105, 0.1);
    color: var(--primary);
    border-radius: 50%;
    font-size: 2.2rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
}

.modal-card h2 {
    font-size: 1.6rem;
    font-weight: 800;
    color: var(--dark);
    margin-bottom: 8px;
}

.modal-name-msg {
    font-size: 1.05rem;
    color: var(--text-main);
    margin-bottom: 20px;
}

.modal-summary {
    background-color: var(--light);
    border: 1px solid var(--border-color);
    padding: 16px;
    border-radius: 12px;
    margin-bottom: 24px;
    font-size: 0.95rem;
}

.modal-summary p {
    margin-bottom: 8px;
}

.modal-summary p:last-child {
    margin-bottom: 0;
}

/* Voucher box inside Modal */
.voucher-box {
    background-color: rgba(251, 191, 36, 0.06);
    border: 1.5px dashed var(--secondary-hover);
    padding: 20px;
    border-radius: 16px;
    margin-bottom: 28px;
}

.voucher-title {
    font-size: 0.88rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 12px;
}

.voucher-code-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    margin-bottom: 8px;
}

.voucher-code {
    background-color: var(--white);
    border: 1.5px solid var(--secondary-hover);
    padding: 8px 24px;
    border-radius: 8px;
    font-size: 1.2rem;
    font-weight: 800;
    color: var(--secondary-hover);
    letter-spacing: 2px;
}

.btn-copy {
    background-color: var(--secondary);
    color: var(--dark);
    border: none;
    outline: none;
    padding: 10px 16px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.85rem;
    cursor: pointer;
    transition: var(--transition);
}

.btn-copy:hover {
    background-color: var(--secondary-hover);
}

.voucher-note {
    font-size: 0.78rem;
    color: var(--text-muted);
}

/* Brand Story Section */
.brand-story {
    padding: 100px 0;
    background-color: var(--white);
    position: relative;
}

.story-timeline {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
    margin-top: 40px;
}

.story-step {
    background-color: var(--light);
    border: 1px solid var(--border-color);
    padding: 40px 32px;
    border-radius: 24px;
    position: relative;
    transition: var(--transition);
}

.story-step:hover {
    transform: translateY(-5px);
    border-color: rgba(5, 150, 105, 0.3);
    box-shadow: var(--shadow-md);
}

.story-number {
    font-size: 3.5rem;
    font-weight: 800;
    color: rgba(5, 150, 105, 0.12);
    line-height: 1;
    margin-bottom: 20px;
    font-style: italic;
}

.story-body h3 {
    font-size: 1.25rem;
    font-weight: 750;
    color: var(--dark);
    margin-bottom: 12px;
}

.story-body p {
    font-size: 0.95rem;
    color: var(--text-muted);
}

/* Video Showcase Section */
.video-showcase {
    padding: 100px 0;
    background-color: var(--light);
}

.video-player-container {
    display: grid;
    grid-template-columns: 1.6fr 1fr;
    gap: 32px;
    margin-top: 40px;
}

.main-player-wrapper {
    background-color: var(--white);
    border-radius: 20px;
    overflow: hidden;
    padding: 16px;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
}

.main-player-wrapper iframe {
    width: 100%;
    aspect-ratio: 16 / 9;
    border-radius: 12px;
    display: block;
}

.main-video-title {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--dark);
    margin-top: 16px;
    line-height: 1.4;
}

.video-playlist {
    background-color: var(--white);
    border-radius: 20px;
    padding: 20px;
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    gap: 16px;
    max-height: 480px;
    overflow-y: auto;
}

.playlist-item {
    display: flex;
    gap: 16px;
    padding: 12px;
    border-radius: 14px;
    border: 1.5px solid transparent;
    cursor: pointer;
    transition: var(--transition);
}

.playlist-item:hover, .playlist-item.active {
    background-color: rgba(5, 150, 105, 0.05);
    border-color: rgba(5, 150, 105, 0.15);
}

.playlist-item.active {
    border-color: var(--primary);
}

.playlist-thumb {
    width: 110px;
    height: 70px;
    background-size: cover;
    background-position: center;
    border-radius: 8px;
    position: relative;
    flex-shrink: 0;
}

.play-badge {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 28px;
    height: 28px;
    background-color: rgba(15, 23, 42, 0.7);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
}

.playlist-info {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.playlist-info h4 {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 4px;
    line-height: 1.3;
}

}

/* Real-life Gallery Section */
.gallery-section {
    padding: 100px 0;
    background-color: var(--white);
}

.gallery-filters {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 10px 24px;
    border-radius: 30px;
    border: 1.5px solid var(--border-color);
    background-color: var(--white);
    color: var(--text-muted);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.filter-btn:hover, .filter-btn.active {
    background-color: var(--primary);
    color: var(--white);
    border-color: var(--primary);
    box-shadow: var(--shadow-sm);
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 24px;
}

.gallery-item {
    transition: transform 0.4s ease, opacity 0.4s ease;
    opacity: 1;
    transform: scale(1);
    display: block;
}

.gallery-item.hidden {
    display: none;
    opacity: 0;
    transform: scale(0.8);
}

.gallery-card {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    aspect-ratio: 4 / 3;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    cursor: pointer;
}

.gallery-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

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

.gallery-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to top, rgba(15, 23, 42, 0.9) 0%, rgba(15, 23, 42, 0.2) 60%, transparent 100%);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 24px;
    opacity: 0;
    transition: opacity 0.4s ease;
}

.gallery-card:hover .gallery-overlay {
    opacity: 1;
}

.gallery-tag {
    font-size: 0.72rem;
    font-weight: 750;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--white);
    background-color: var(--primary);
    padding: 4px 10px;
    border-radius: 6px;
    width: fit-content;
    margin-bottom: 8px;
}

.gallery-overlay h4 {
    color: var(--white);
    font-size: 1.05rem;
    font-weight: 700;
    line-height: 1.3;
}

/* Lightbox Modal */
.lightbox-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(15, 23, 42, 0.95);
    z-index: 2000;
    display: none;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.lightbox-modal.active {
    display: flex;
    opacity: 1;
}

.lightbox-close {
    position: absolute;
    top: 24px;
    right: 32px;
    font-size: 44px;
    color: var(--white);
    cursor: pointer;
    font-weight: 300;
    line-height: 1;
    transition: var(--transition);
}

.lightbox-close:hover {
    color: var(--accent);
}

.lightbox-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 50px;
    height: 50px;
    background-color: rgba(255, 255, 255, 0.1);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    cursor: pointer;
    user-select: none;
    transition: var(--transition);
    z-index: 2010;
}

.lightbox-nav:hover {
    background-color: var(--primary);
    color: var(--white);
}

.lightbox-prev {
    left: 32px;
}

.lightbox-next {
    right: 32px;
}

.lightbox-content-wrapper {
    max-width: 85%;
    max-height: 80vh;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
}

.lightbox-img {
    max-width: 100%;
    max-height: 70vh;
    border-radius: 12px;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.6);
    object-fit: contain;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.lightbox-caption {
    color: var(--white);
    font-size: 1.1rem;
    font-weight: 600;
    line-height: 1.4;
}}

/* Before/After Comparison Section */
.comparison-section {
    padding: 100px 0;
    background-color: var(--light);
}

.comparison-grid {
    display: flex;
    flex-direction: column;
    gap: 48px;
    margin-top: 40px;
}

.comparison-card {
    background-color: var(--white);
    border-radius: 24px;
    padding: 32px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    display: grid;
    grid-template-columns: 1.8fr 1fr;
    gap: 32px;
    align-items: center;
    transition: var(--transition);
}

.comparison-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
    border-color: rgba(5, 150, 105, 0.2);
}

.comp-images {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.comp-box {
    position: relative;
    border-radius: 16px;
    overflow: hidden;
    aspect-ratio: 4 / 3;
    border: 1px solid var(--border-color);
}

.comp-box img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.comp-label {
    position: absolute;
    bottom: 12px;
    left: 12px;
    font-size: 0.72rem;
    font-weight: 800;
    padding: 6px 12px;
    border-radius: 6px;
    color: var(--white);
    z-index: 10;
    box-shadow: var(--shadow-sm);
}

.comp-label.before {
    background-color: #ef4444;
}

.comp-label.after {
    background-color: var(--primary);
}

.comp-info h4 {
    font-size: 1.4rem;
    font-weight: 750;
    color: var(--dark);
    margin-bottom: 16px;
}

.comp-info p {
    font-size: 1rem;
    color: var(--text-muted);
    line-height: 1.6;
}

/* Responsive Styles */
@media (max-width: 992px) {
    .comparison-card {
        grid-template-columns: 1fr;
        gap: 24px;
        padding: 24px;
    }
    .lightbox-nav {
        width: 40px;
        height: 40px;
        font-size: 1.2rem;
    }
    .lightbox-prev { left: 16px; }
    .lightbox-next { right: 16px; }
    .video-player-container {
        grid-template-columns: 1fr;
    }
    
    .video-playlist {
        max-height: none;
    }
    .header-container {
        height: 70px;
    }
    
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background-color: var(--white);
        flex-direction: column;
        align-items: center;
        padding-top: 40px;
        transition: var(--transition);
        border-top: 1px solid var(--border-color);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .hamburger {
        display: flex;
    }
    
    .hamburger.active span:nth-child(1) {
        transform: translateY(9px) rotate(45deg);
    }
    
    .hamburger.active span:nth-child(2) {
        opacity: 0;
    }
    
    .hamburger.active span:nth-child(3) {
        transform: translateY(-9px) rotate(-45deg);
    }
    
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 40px;
    }
    
    .hero-content h1 {
        font-size: 2.3rem;
    }
    
    .countdown-wrapper {
        margin: 0 auto 32px;
    }
    
    .hero-actions {
        justify-content: center;
    }
    
    .hero-trust {
        justify-content: center;
    }
    
    .calculator-grid {
        grid-template-columns: 1fr;
    }
    
    .combo-grid {
        grid-template-columns: 1fr;
    }
    
    .combo-pricing-card {
        position: relative;
        top: 0;
    }
    
    .why-choose-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-container {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}

@media (max-width: 576px) {
    .container {
        padding: 0 16px;
    }
    
    .hero-actions {
        flex-direction: column;
        width: 100%;
    }
    
    .hero-actions .btn {
        width: 100%;
    }
    
    .hero-content h1 {
        font-size: 1.85rem;
    }
    
    .countdown-timer {
        justify-content: center;
    }
    
    .calc-inputs {
        padding: 20px;
    }
    
    .calc-result-card {
        padding: 24px;
    }
    
    .combo-selector-card {
        padding: 20px;
    }
    
    .combo-pricing-card {
        padding: 20px;
    }
    
    .combo-select-item {
        flex-direction: column;
        align-items: flex-start;
        position: relative;
    }
    
    .item-qty-control {
        margin-top: 12px;
        align-self: flex-end;
    }
    
    .item-check {
        position: absolute;
        top: 16px;
        right: 16px;
    }
    
    .modal-card {
        padding: 24px;
    }
    
    .voucher-code {
        padding: 8px 12px;
        font-size: 1rem;
    }

    .comp-images {
        grid-template-columns: 1fr;
        gap: 12px;
    }
}

/* Floating Hotline Button */
.floating-hotline {
    position: fixed;
    bottom: 32px;
    left: 32px;
    width: 60px;
    height: 60px;
    background-color: #ef4444;
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 8px 24px rgba(239, 68, 68, 0.4);
    z-index: 1900;
    cursor: pointer;
    text-decoration: none;
    transition: var(--transition);
}

.floating-hotline:hover {
    transform: scale(1.1);
    background-color: #dc2626;
    box-shadow: 0 10px 28px rgba(239, 68, 68, 0.5);
}

.hotline-phone-icon {
    width: 26px;
    height: 26px;
    z-index: 10;
    animation: phone-shake 1.5s infinite ease-in-out;
}

.hotline-phone-icon svg {
    width: 100%;
    height: 100%;
    fill: currentColor;
}

.hotline-pulse {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    border-radius: 50%;
    width: 100%;
    height: 100%;
    z-index: 1;
    opacity: 0;
}

.hotline-pulse.rings {
    border: 2px solid #ef4444;
    animation: pulse-ring 2s infinite ease-in-out;
}

.hotline-pulse.circle {
    background-color: rgba(239, 68, 68, 0.3);
    animation: pulse-circle 2s infinite ease-in-out;
}

@keyframes phone-shake {
    0%, 100% { transform: rotate(0); }
    10%, 30%, 50%, 70%, 90% { transform: rotate(-15deg); }
    20%, 40%, 60%, 80% { transform: rotate(15deg); }
}

@keyframes pulse-ring {
    0% {
        width: 100%;
        height: 100%;
        opacity: 1;
    }
    100% {
        width: 220%;
        height: 220%;
        opacity: 0;
    }
}

@keyframes pulse-circle {
    0% {
        width: 100%;
        height: 100%;
        opacity: 0.6;
    }
    100% {
        width: 180%;
        height: 180%;
        opacity: 0;
    }
}

@media (max-width: 768px) {
    .floating-hotline {
        bottom: 24px;
        left: 24px;
        width: 50px;
        height: 50px;
    }
    .hotline-phone-icon {
        width: 22px;
        height: 22px;
    }
}