/* ==================== Reset & Base ==================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #c9a96e;
    --primary-dark: #a88950;
    --primary-light: #f5efe0;
    --primary-gradient: linear-gradient(135deg, #1a1a1a, #3a3a3a);
    --dark: #1a1a1a;
    --dark-2: #2c2c2c;
    --gray: #555;
    --light-gray: #888;
    --border: #e8e8e8;
    --bg-light: #f7f7f7;
    --bg-white: #ffffff;
    --transition: all 0.35s ease;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    --shadow-hover: 0 8px 30px rgba(0, 0, 0, 0.12);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    color: var(--dark);
    line-height: 1.7;
    background: var(--bg-white);
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.3;
}

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

a:hover { color: var(--primary-dark); }

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

ul { list-style: none; }

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.section { padding: 90px 0; }
.section-light { background: var(--bg-light); }

.section-title {
    text-align: center;
    margin-bottom: 60px;
}

.section-title h2 {
    font-size: 2.4rem;
    margin-bottom: 16px;
    position: relative;
    display: inline-block;
}

.section-title h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 50px;
    height: 3px;
    background: var(--primary);
    border-radius: 2px;
}

.section-title p {
    color: var(--gray);
    font-size: 1.05rem;
    max-width: 700px;
    margin: 20px auto 0;
}

/* ==================== Hero ==================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    position: relative;
}

.hero-overlay {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: rgba(0, 0, 0, 0.5);
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
    padding: 0 24px;
}

.hero-content h1 {
    font-size: 3.5rem;
    color: #fff;
    margin-bottom: 20px;
    font-weight: 800;
    letter-spacing: -1px;
}

.hero-content p {
    font-size: 1.2rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 36px;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    display: inline-block;
    padding: 14px 36px;
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: 50px;
    transition: var(--transition);
    cursor: pointer;
    border: none;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(201, 169, 110, 0.4);
}

.btn-outline {
    background: transparent;
    color: #fff;
    border: 2px solid #fff;
}

.btn-outline:hover {
    background: #fff;
    color: var(--dark);
    transform: translateY(-2px);
}

/* ==================== Feature Cards ==================== */
.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 28px;
}

.feature-card {
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 40px 30px;
    text-align: center;
    transition: var(--transition);
}

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

.feature-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 24px;
    background: var(--primary-light);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
}

.feature-card h3 {
    font-size: 1.2rem;
    margin-bottom: 12px;
}

.feature-card p {
    color: var(--gray);
    font-size: 0.95rem;
}

/* ==================== Collection Section ==================== */
.collection-intro {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 60px;
}

.collection-intro .badge {
    display: inline-block;
    background: var(--primary-light);
    color: var(--primary-dark);
    padding: 6px 18px;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 20px;
}

.collection-intro h2 {
    font-size: 2.4rem;
    margin-bottom: 20px;
}

.collection-intro p {
    color: var(--gray);
    font-size: 1.1rem;
}

.collection-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-bottom: 60px;
}

.collection-block {
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: 14px;
    overflow: hidden;
    transition: var(--transition);
}

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

.collection-block .block-image {
    width: 100%;
    height: 220px;
    object-fit: cover;
    display: block;
}

.collection-block .block-body {
    padding: 30px;
}

.collection-block .block-number {
    width: 40px;
    height: 40px;
    background: var(--dark);
    color: var(--primary);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.1rem;
    margin-bottom: 20px;
}

.collection-block h3 {
    font-size: 1.3rem;
    margin-bottom: 20px;
}

.collection-block ul li {
    padding: 8px 0;
    color: var(--gray);
    font-size: 0.95rem;
    display: flex;
    align-items: flex-start;
    gap: 8px;
}

.collection-block ul li::before {
    content: '\2713';
    color: var(--primary);
    font-weight: 700;
    flex-shrink: 0;
}

.collection-block ul li strong { color: var(--dark); }

.whats-inside {
    background: var(--dark);
    border-radius: 16px;
    padding: 50px;
    color: #fff;
}

.whats-inside h3 {
    font-size: 1.6rem;
    margin-bottom: 30px;
    text-align: center;
    color: var(--primary);
}

.whats-inside-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.whats-inside-item h4 {
    font-size: 1.1rem;
    margin-bottom: 10px;
    color: var(--primary);
}

.whats-inside-item p {
    color: rgba(255, 255, 255, 0.75);
    font-size: 0.92rem;
}

/* ==================== Stats ==================== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    text-align: center;
}

.stat-item h3 {
    font-size: 3rem;
    color: var(--primary);
    font-weight: 800;
    margin-bottom: 10px;
}

.stat-item p {
    color: var(--gray);
    font-size: 0.98rem;
}

/* ==================== COA Reports ==================== */
.coa-methods {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
    margin-bottom: 50px;
}

.coa-method-card {
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 36px 28px;
    text-align: center;
    transition: var(--transition);
}

.coa-method-card:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-4px);
    border-color: var(--primary-light);
}

.coa-method-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto 20px;
    background: var(--primary-light);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
}

.coa-method-icon svg {
    width: 28px;
    height: 28px;
}

.coa-method-card h3 {
    font-size: 1.15rem;
    margin-bottom: 10px;
}

.coa-method-card p {
    color: var(--gray);
    font-size: 0.92rem;
}

.coa-table-wrap {
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 40px;
    box-shadow: var(--shadow);
}

.coa-table-wrap > h3 {
    font-size: 1.4rem;
    margin-bottom: 24px;
    text-align: center;
}

.coa-table-scroll {
    overflow-x: auto;
}

.coa-table {
    width: 100%;
    border-collapse: collapse;
    min-width: 600px;
}

.coa-table thead th {
    background: var(--dark);
    color: var(--primary);
    padding: 14px 20px;
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    text-align: left;
}

.coa-table thead th:first-child { border-radius: 8px 0 0 8px; }
.coa-table thead th:last-child { border-radius: 0 8px 8px 0; }

.coa-table tbody td {
    padding: 14px 20px;
    font-size: 0.95rem;
    border-bottom: 1px solid var(--border);
    color: var(--gray);
}

.coa-table tbody td:first-child {
    color: var(--dark);
    font-weight: 600;
}

.coa-table tbody tr:last-child td { border-bottom: none; }

.coa-table tbody tr:hover {
    background: var(--primary-light);
}

.purity-badge {
    display: inline-block;
    background: #e8f5e9;
    color: #2e7d32;
    padding: 4px 14px;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 700;
}

.coa-cta {
    text-align: center;
    margin-top: 30px;
    padding-top: 30px;
    border-top: 1px solid var(--border);
}

.coa-cta p {
    color: var(--gray);
    font-size: 1rem;
    margin-bottom: 20px;
}

/* ==================== FAQ ==================== */
.faq-container {
    max-width: 850px;
    margin: 0 auto;
}

.faq-item {
    border: 1px solid var(--border);
    border-radius: 12px;
    margin-bottom: 16px;
    overflow: hidden;
    transition: var(--transition);
}

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

.faq-question {
    padding: 22px 28px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-weight: 600;
    font-size: 1.05rem;
    transition: var(--transition);
}

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

.faq-icon {
    flex-shrink: 0;
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    font-size: 1.4rem;
}

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

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s ease, padding 0.35s ease;
    padding: 0 28px;
}

.faq-item.active .faq-answer {
    max-height: 300px;
    padding: 0 28px 22px;
}

.faq-answer p {
    color: var(--gray);
    font-size: 0.95rem;
}

/* ==================== CTA ==================== */
.cta-section {
    background: var(--primary-gradient);
    padding: 90px 0;
    text-align: center;
}

.cta-section h2 {
    font-size: 2.6rem;
    color: #fff;
    margin-bottom: 16px;
}

.cta-section p {
    color: rgba(255, 255, 255, 0.8);
    font-size: 1.15rem;
    margin-bottom: 36px;
}

.cta-section .btn-outline {
    border-color: var(--primary);
    color: var(--primary);
}

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

/* ==================== Footer ==================== */
.footer {
    background: #161616;
    color: #aaa;
    padding: 10px 0 0;
}

.footer-social {
    padding: 25px 0;
    border-bottom: 1px solid #2a2a2a;
    text-align: center;
}

.footer-social p {
    color: #888;
    font-size: 0.9rem;
    margin-bottom: 16px;
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 16px;
}

.social-links a {
    width: 42px;
    height: 42px;
    background: #2a2a2a;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #aaa;
    transition: var(--transition);
}

.social-links a:hover {
    background: var(--primary);
    color: #fff;
    transform: translateY(-3px);
}

.social-links svg {
    width: 20px;
    height: 20px;
    fill: currentColor;
}

.footer-bottom {
    padding: 8px 0;
    text-align: center;
}

.footer-bottom p {
    font-size: 0.88rem;
    color: #777;
    margin-bottom: 6px;
}

/* ==================== Back to Top ==================== */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 48px;
    height: 48px;
    background: var(--dark);
    color: #fff;
    border: 2px solid var(--primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 999;
}

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

.back-to-top:hover {
    background: var(--primary);
    transform: translateY(-4px);
    box-shadow: 0 6px 20px rgba(201, 169, 110, 0.4);
}

.back-to-top svg {
    width: 22px;
    height: 22px;
    fill: currentColor;
}

/* ==================== WhatsApp Floating Button ==================== */
.whatsapp-float {
    position: fixed;
    bottom: 90px;
    right: 30px;
    width: 56px;
    height: 56px;
    background: #25D366;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 16px rgba(37, 211, 102, 0.4);
    transition: var(--transition);
    z-index: 999;
    animation: wa-pulse 2s infinite;
}

.whatsapp-float:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 24px rgba(37, 211, 102, 0.6);
}

.whatsapp-float svg {
    width: 30px;
    height: 30px;
    fill: #fff;
}

@keyframes wa-pulse {
    0% { box-shadow: 0 4px 16px rgba(37, 211, 102, 0.4), 0 0 0 0 rgba(37, 211, 102, 0.5); }
    70% { box-shadow: 0 4px 16px rgba(37, 211, 102, 0.4), 0 0 0 14px rgba(37, 211, 102, 0); }
    100% { box-shadow: 0 4px 16px rgba(37, 211, 102, 0.4), 0 0 0 0 rgba(37, 211, 102, 0); }
}

/* ==================== Responsive ==================== */
@media (max-width: 992px) {
    .features-grid { grid-template-columns: repeat(2, 1fr); }
    .collection-grid,
    .whats-inside-grid { grid-template-columns: 1fr; }
    .coa-methods { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 40px; }
    .hero-content h1 { font-size: 2.5rem; }
}

@media (max-width: 768px) {
    .section { padding: 60px 0; }
    .section-title h2, .collection-intro h2 { font-size: 1.8rem; }
    .hero-content h1 { font-size: 2rem; }
    .hero-content p { font-size: 1rem; }
    .features-grid { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: 1fr; }
    .whats-inside { padding: 30px 20px; }
    .coa-table-wrap { padding: 24px 16px; }
    .cta-section h2 { font-size: 1.8rem; }
}

@media (max-width: 600px) {
    .hero { background-attachment: scroll !important; }
}