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

:root {
    --green-900: #1a2e1f;
    --green-800: #24422d;
    --green-700: #2f5a3d;
    --green-600: #3d7a50;
    --green-500: #4f9b65;
    --green-400: #72b886;
    --green-300: #9fd4af;
    --green-200: #c8ead3;
    --green-100: #e8f7ed;
    --green-50: #f4fcf7;
    --gold: #c9a96e;
    --gold-light: #e8d5a8;
    --cream: #faf8f3;
    --warm-gray: #f5f2eb;
    --text-dark: #1c1c1e;
    --text-muted: #5e5e64;
    --text-light: #8e8e96;
    --white: #ffffff;
    --shadow-sm: 0 2px 8px rgba(26, 46, 31, 0.06);
    --shadow-md: 0 8px 30px rgba(26, 46, 31, 0.08);
    --shadow-lg: 0 20px 60px rgba(26, 46, 31, 0.12);
    --shadow-glow: 0 0 40px rgba(79, 155, 101, 0.15);
    --radius-sm: 12px;
    --radius-md: 20px;
    --radius-lg: 28px;
    --transition: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-display: 'Playfair Display', serif;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background: var(--cream);
    color: var(--text-dark);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

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

.section {
    padding: 100px 0;
}

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

.section-label {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--green-500);
    background: var(--green-100);
    padding: 6px 16px;
    border-radius: 100px;
    margin-bottom: 16px;
}

h2 {
    font-family: var(--font-display);
    font-size: 2.6rem;
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: 16px;
    color: var(--green-900);
}

h2 .highlight {
    color: var(--green-500);
}

p {
    color: var(--text-muted);
    font-size: 1.05rem;
    line-height: 1.7;
    max-width: 600px;
}

/* ===== BUTTONS ===== */
.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--green-500);
    color: var(--white);
    font-family: var(--font-sans);
    font-weight: 600;
    font-size: 0.9rem;
    padding: 12px 28px;
    border-radius: 100px;
    text-decoration: none;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.btn-primary::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255,255,255,0.15), transparent);
    opacity: 0;
    transition: var(--transition);
}

.btn-primary:hover {
    background: var(--green-600);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(79, 155, 101, 0.3);
}

.btn-primary:hover::before {
    opacity: 1;
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: transparent;
    color: var(--green-700);
    font-family: var(--font-sans);
    font-weight: 600;
    font-size: 0.9rem;
    padding: 12px 28px;
    border-radius: 100px;
    text-decoration: none;
    border: 2px solid var(--green-300);
    transition: var(--transition);
}

.btn-secondary:hover {
    border-color: var(--green-500);
    background: var(--green-50);
    transform: translateY(-2px);
}

.btn-lg {
    padding: 16px 36px;
    font-size: 1rem;
}

/* ===== NAVBAR ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 16px 0;
    transition: var(--transition);
}

.navbar.scrolled {
    background: rgba(250, 248, 243, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: var(--shadow-sm);
    padding: 10px 0;
}

.nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    font-family: var(--font-display);
    font-size: 1.6rem;
    color: var(--green-800);
    text-decoration: none;
    font-weight: 600;
}

.nav-links {
    list-style: none;
    display: flex;
    gap: 36px;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-muted);
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--green-500);
    transition: var(--transition);
}

.nav-links a:hover {
    color: var(--green-700);
}

.nav-links a:hover::after {
    width: 100%;
}

.nav-cta {
    padding: 10px 22px;
    font-size: 0.85rem;
}

/* ===== HERO ===== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    padding-top: 80px;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--green-50) 0%, var(--cream) 50%, var(--warm-gray) 100%);
    z-index: 0;
}

.hero-bg::before {
    content: '';
    position: absolute;
    top: -30%;
    right: -20%;
    width: 60%;
    height: 80%;
    background: radial-gradient(ellipse, rgba(79, 155, 101, 0.08), transparent 70%);
    border-radius: 50%;
}

.hero-bg::after {
    content: '';
    position: absolute;
    bottom: -10%;
    left: -10%;
    width: 40%;
    height: 60%;
    background: radial-gradient(ellipse, rgba(201, 169, 110, 0.06), transparent 70%);
    border-radius: 50%;
}

.hero-inner {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-text .badge {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--gold);
    background: rgba(201, 169, 110, 0.12);
    padding: 6px 16px;
    border-radius: 100px;
    margin-bottom: 20px;
}

.hero-text h1 {
    font-family: var(--font-display);
    font-size: 3.8rem;
    font-weight: 600;
    line-height: 1.1;
    margin-bottom: 20px;
    color: var(--green-900);
}

.hero-text h1 .highlight {
    color: var(--green-500);
    font-style: italic;
}

.hero-text > p {
    font-size: 1.1rem;
    margin-bottom: 32px;
}

.hero-ctas {
    display: flex;
    gap: 16px;
    margin-bottom: 48px;
}

.hero-stats {
    display: flex;
    gap: 40px;
}

.hero-stats div {
    display: flex;
    flex-direction: column;
    font-size: 0.8rem;
    color: var(--text-light);
    font-weight: 500;
}

.hero-stats strong {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--green-700);
    line-height: 1.2;
}

.hero-visual {
    display: flex;
    justify-content: center;
}

.product-card-glow {
    position: relative;
}

.product-card-glow::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 120%;
    height: 120%;
    background: radial-gradient(ellipse, rgba(79, 155, 101, 0.2), transparent 60%);
    border-radius: 50%;
    animation: pulse 4s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: translate(-50%, -50%) scale(1); opacity: 0.6; }
    50% { transform: translate(-50%, -50%) scale(1.1); opacity: 1; }
}

.product-card {
    position: relative;
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 20px;
    box-shadow: var(--shadow-lg);
    transform: rotate(-3deg) perspective(800px) rotateY(8deg);
    transition: var(--transition);
    max-width: 320px;
}

.product-card:hover {
    transform: rotate(0deg) perspective(800px) rotateY(2deg);
    box-shadow: var(--shadow-glow);
}

.product-badge {
    position: absolute;
    top: -8px;
    right: -8px;
    background: var(--gold);
    color: var(--white);
    font-size: 0.7rem;
    font-weight: 700;
    padding: 4px 14px;
    border-radius: 100px;
    letter-spacing: 0.05em;
}

.product-card img {
    width: 100%;
    border-radius: var(--radius-sm);
    display: block;
}

/* ===== LOGOS SECTION ===== */
.logos {
    padding: 60px 0;
    background: var(--white);
}

.trusted-by {
    text-align: center;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-light);
    margin-bottom: 24px;
}

.logo-strip {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 48px;
    flex-wrap: wrap;
}

.logo-strip span {
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--text-light);
    opacity: 0.6;
    transition: var(--transition);
}

.logo-strip span:hover {
    opacity: 1;
    color: var(--green-600);
}

/* ===== ABOUT ===== */
.about {
    background: var(--white);
}

.about-grid {
    display: grid;
    grid-template-columns: 0.9fr 1.1fr;
    gap: 60px;
    align-items: center;
}

.about-visual {
    display: flex;
    justify-content: center;
}

.about-img {
    max-width: 100%;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

.about-img:hover {
    transform: scale(1.02);
    box-shadow: var(--shadow-lg);
}

.about-text h2 {
    font-size: 2.2rem;
    margin-bottom: 16px;
}

.about-text > p {
    margin-bottom: 16px;
}

.about-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-top: 24px;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--green-800);
}

.feature-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    background: var(--green-100);
    color: var(--green-600);
    border-radius: 50%;
    font-size: 0.7rem;
    font-weight: 700;
    flex-shrink: 0;
}

/* ===== INGREDIENTS ===== */
.ingredients {
    background: var(--green-50);
}

.ingredients .section-header p {
    margin: 0 auto;
}

.ingredients-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.ingredient-card {
    background: var(--white);
    border-radius: var(--radius-md);
    padding: 28px 24px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.ingredient-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--green-300), var(--green-500));
    opacity: 0;
    transition: var(--transition);
}

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

.ingredient-card:hover::before {
    opacity: 1;
}

.ingredient-card.highlight-card {
    background: linear-gradient(135deg, var(--green-500), var(--green-600));
    color: var(--white);
}

.ingredient-card.highlight-card h3,
.ingredient-card.highlight-card p {
    color: var(--white);
}

.ingredient-card.highlight-card .ingredient-dose {
    color: var(--green-200);
}

.ingredient-icon {
    font-size: 1.8rem;
    margin-bottom: 12px;
}

.ingredient-card h3 {
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 4px;
    color: var(--green-900);
}

.ingredient-dose {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--green-500);
    margin-bottom: 8px;
}

.ingredient-card p {
    font-size: 0.82rem;
    color: var(--text-muted);
    line-height: 1.5;
}

/* ===== BENEFITS ===== */
.benefits-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.benefit-card {
    background: var(--white);
    border-radius: var(--radius-md);
    padding: 36px 28px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    position: relative;
}

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

.benefit-number {
    font-family: var(--font-display);
    font-size: 2.8rem;
    font-weight: 600;
    color: var(--green-200);
    line-height: 1;
    margin-bottom: 16px;
}

.benefit-card h3 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--green-900);
}

.benefit-card p {
    font-size: 0.9rem;
}

/* ===== USAGE ===== */
.usage {
    background: var(--white);
}

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

.usage-text h2 {
    font-size: 2.2rem;
}

.usage-step {
    display: flex;
    gap: 20px;
    margin-bottom: 28px;
    align-items: flex-start;
}

.step-num {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--green-100);
    color: var(--green-600);
    font-weight: 700;
    font-size: 1rem;
    border-radius: 50%;
    flex-shrink: 0;
}

.usage-step h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--green-900);
    margin-bottom: 4px;
}

.usage-step p {
    font-size: 0.9rem;
}

.usage-note {
    margin-top: 8px;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--green-600);
    background: var(--green-50);
    padding: 12px 20px;
    border-radius: var(--radius-sm);
}

.usage-banner {
    width: 100%;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

.usage-banner:hover {
    transform: scale(1.01);
    box-shadow: var(--shadow-lg);
}

/* ===== SCIENCE ===== */
.science {
    background: var(--green-50);
}

.science-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.science-card {
    background: var(--white);
    border-radius: var(--radius-md);
    padding: 36px 28px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

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

.science-icon {
    font-size: 2.4rem;
    margin-bottom: 16px;
}

.science-card h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--green-900);
}

.science-card p {
    font-size: 0.9rem;
    margin: 0 auto;
}

/* ===== FAQ ===== */
.faq {
    background: var(--white);
}

.faq-list {
    max-width: 720px;
    margin: 0 auto;
}

.faq-item {
    border-bottom: 1px solid var(--green-100);
    padding: 8px 0;
}

.faq-question {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: none;
    border: none;
    padding: 20px 0;
    font-family: var(--font-sans);
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--green-900);
    cursor: pointer;
    text-align: left;
    transition: var(--transition);
}

.faq-question:hover {
    color: var(--green-600);
}

.faq-arrow {
    font-size: 1.2rem;
    transition: var(--transition);
    color: var(--green-400);
}

.faq-item.open .faq-arrow {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, padding 0.4s ease;
    padding: 0;
    font-size: 0.95rem;
    color: var(--text-muted);
    line-height: 1.7;
}

.faq-item.open .faq-answer {
    padding: 0 0 20px;
}

/* ===== CTA ===== */
.cta {
    background: var(--green-900);
    position: relative;
    overflow: hidden;
}

.cta-container {
    text-align: center;
    position: relative;
    z-index: 1;
}

.cta-bg-pattern {
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 30% 50%, rgba(79, 155, 101, 0.15), transparent 60%),
                radial-gradient(ellipse at 70% 50%, rgba(201, 169, 110, 0.08), transparent 60%);
    z-index: 0;
}

.cta h2 {
    color: var(--white);
    font-size: 2.8rem;
}

.cta h2 .highlight {
    color: var(--gold-light);
}

.cta p {
    color: rgba(255, 255, 255, 0.7);
    margin: 0 auto 32px;
}

.cta .btn-primary {
    background: var(--gold);
    font-size: 1.1rem;
    padding: 18px 44px;
}

.cta .btn-primary:hover {
    background: #bf9a5a;
    box-shadow: 0 8px 32px rgba(201, 169, 110, 0.3);
}

.cta-badges {
    display: flex;
    justify-content: center;
    gap: 32px;
    margin-top: 32px;
}

.cta-badges span {
    font-size: 0.82rem;
    color: rgba(255, 255, 255, 0.5);
    font-weight: 500;
    position: relative;
}

.cta-badges span::before {
    content: '•';
    margin-right: 8px;
    color: var(--green-400);
}

/* ===== FOOTER ===== */
.footer {
    background: var(--green-900);
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    padding: 60px 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
    gap: 48px;
}

.footer h3 {
    font-family: var(--font-display);
    font-size: 1.5rem;
    color: var(--white);
    margin-bottom: 12px;
}

.footer h4 {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--white);
    margin-bottom: 16px;
}

.footer p {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.55);
}

.footer-disclaimer {
    font-size: 0.75rem;
    margin-top: 12px;
    color: rgba(255, 255, 255, 0.35);
}

.footer-links ul {
    list-style: none;
}

.footer-links li {
    margin-bottom: 10px;
}

.footer-links a {
    text-decoration: none;
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.55);
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--green-300);
}

.footer-contact p {
    margin-bottom: 8px;
}

.footer-bottom {
    margin-top: 48px;
    padding: 24px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.footer-bottom p {
    font-size: 0.78rem;
    text-align: center;
    color: rgba(255, 255, 255, 0.3);
}

/* ===== ANIMATIONS ===== */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

.ingredient-card:nth-child(2) { transition-delay: 0.05s; }
.ingredient-card:nth-child(3) { transition-delay: 0.1s; }
.ingredient-card:nth-child(4) { transition-delay: 0.15s; }
.ingredient-card:nth-child(5) { transition-delay: 0.2s; }
.ingredient-card:nth-child(6) { transition-delay: 0.25s; }
.ingredient-card:nth-child(7) { transition-delay: 0.3s; }
.ingredient-card:nth-child(8) { transition-delay: 0.35s; }
.ingredient-card:nth-child(9) { transition-delay: 0.4s; }
.ingredient-card:nth-child(10) { transition-delay: 0.45s; }
.ingredient-card:nth-child(11) { transition-delay: 0.5s; }
.ingredient-card:nth-child(12) { transition-delay: 0.55s; }

.benefit-card:nth-child(2) { transition-delay: 0.1s; }
.benefit-card:nth-child(3) { transition-delay: 0.2s; }
.benefit-card:nth-child(4) { transition-delay: 0.3s; }

.science-card:nth-child(2) { transition-delay: 0.1s; }
.science-card:nth-child(3) { transition-delay: 0.2s; }

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
    .ingredients-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    .hero-text h1 {
        font-size: 3rem;
    }
}

@media (max-width: 900px) {
    .hero-inner {
        grid-template-columns: 1fr;
        text-align: center;
    }
    .hero-text h1 {
        font-size: 2.8rem;
    }
    .hero-stats {
        justify-content: center;
    }
    .hero-ctas {
        justify-content: center;
    }
    .hero-visual {
        display: none;
    }
    .about-grid {
        grid-template-columns: 1fr;
    }
    .about-visual {
        order: -1;
    }
    .about-img {
        max-width: 300px;
    }
    .usage-flex {
        grid-template-columns: 1fr;
    }
    .usage-visual {
        order: -1;
    }
    .benefits-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    .nav-cta {
        padding: 8px 18px;
        font-size: 0.8rem;
    }
    h2 {
        font-size: 1.8rem;
    }
    .section {
        padding: 60px 0;
    }
    .hero-text h1 {
        font-size: 2.2rem;
    }
    .hero-stats {
        flex-wrap: wrap;
        gap: 20px;
    }
    .ingredients-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .benefits-grid {
        grid-template-columns: 1fr;
    }
    .science-grid {
        grid-template-columns: 1fr;
    }
    .about-features {
        grid-template-columns: 1fr;
    }
    .cta-badges {
        flex-direction: column;
        gap: 8px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }
    .hero-text h1 {
        font-size: 1.8rem;
    }
    .ingredients-grid {
        grid-template-columns: 1fr;
    }
    .hero-ctas {
        flex-direction: column;
        align-items: center;
    }
    .footer-grid {
        grid-template-columns: 1fr;
    }
}