/* === AltPeptide — Premium Research Peptides === */

:root {
    /* Palette — dark lab aesthetic */
    --bg: #08090C;
    --bg-alt: #0E1014;
    --card: #13161C;
    --border: #1E222A;
    --border-hover: #2C3240;

    /* Accent — teal for purity/science */
    --accent: #34D1B7;
    --accent-dim: rgba(52, 209, 183, 0.12);
    --accent-muted: rgba(52, 209, 183, 0.5);

    /* Primary — deep indigo for CTAs */
    --primary: #6366F1;
    --primary-hover: #4F46E5;

    /* Text */
    --text: #E4E4E9;
    --text-secondary: #9CA3AF;
    --text-muted: #6B7280;

    /* Status */
    --success: #10B981;
    --warning: #F59E0B;
    --danger: #EF4444;

    /* Typography */
    --font: 'Inter', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
    --mono: 'SF Mono', 'Fira Code', 'Consolas', monospace;

    /* Spacing */
    --container: 1180px;
    --section-pad: 96px;
    --radius: 8px;
    --radius-lg: 12px;
}

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

html { scroll-behavior: smooth; }

body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img { display: block; max-width: 100%; }
a { color: inherit; }

.container {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 24px;
}


/* ─── NAVBAR ─────────────────────────────────────── */

.navbar {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(8, 9, 12, 0.92);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--text);
}

.logo-mark {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: var(--accent);
    border-radius: 6px;
    color: var(--bg);
    font-weight: 800;
    font-size: 0.85rem;
}

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

.nav-links {
    display: flex;
    list-style: none;
    gap: 8px;
}

.nav-links a {
    display: block;
    padding: 6px 14px;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: 6px;
    transition: color 0.15s, background 0.15s;
}

.nav-links a:hover {
    color: var(--text);
    background: rgba(255, 255, 255, 0.04);
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: 1px solid var(--border);
    color: var(--text);
    width: 40px;
    height: 40px;
    border-radius: var(--radius);
    font-size: 1.25rem;
    cursor: pointer;
    transition: border-color 0.15s;
}

.mobile-menu-btn:hover { border-color: var(--border-hover); }


/* ─── HERO ───────────────────────────────────────── */

.hero {
    padding: 80px 0 64px;
    text-align: center;
    border-bottom: 1px solid var(--border);
}

.hero-content {
    max-width: 720px;
    margin: 0 auto;
}

.hero-label {
    display: inline-block;
    padding: 6px 16px;
    background: var(--accent-dim);
    border: 1px solid rgba(52, 209, 183, 0.2);
    border-radius: 100px;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--accent);
    letter-spacing: 0.03em;
    text-transform: uppercase;
    margin-bottom: 28px;
}

.hero h1 {
    font-size: clamp(2.25rem, 5vw, 3.5rem);
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.03em;
    margin-bottom: 20px;
}

.hero-subtitle {
    font-size: 1.05rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 36px;
    max-width: 540px;
    margin-left: auto;
    margin-right: auto;
}

.hero-cta {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 48px;
}

.hero-stats {
    display: flex;
    gap: 48px;
    justify-content: center;
    flex-wrap: wrap;
}

.stat { text-align: center; }

.stat-number {
    display: block;
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--accent);
    letter-spacing: -0.02em;
}

.stat-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 500;
}


/* ─── RESEARCH DISCLAIMER BANNER ─────────────────── */

.research-banner {
    background: rgba(239, 68, 68, 0.06);
    border-bottom: 1px solid rgba(239, 68, 68, 0.15);
    padding: 14px 0;
    text-align: center;
}

.research-banner p {
    font-size: 0.82rem;
    color: var(--danger);
    font-weight: 500;
    letter-spacing: 0.01em;
}


/* ─── BUTTONS ────────────────────────────────────── */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 11px 24px;
    border-radius: var(--radius);
    font-weight: 600;
    font-size: 0.9rem;
    text-decoration: none;
    transition: all 0.15s;
    cursor: pointer;
    border: none;
    font-family: var(--font);
    line-height: 1;
}

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

.btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

.btn-outline {
    background: transparent;
    color: var(--text);
    border: 1px solid var(--border);
}

.btn-outline:hover {
    border-color: var(--text-secondary);
    color: #fff;
}

.btn-sm {
    padding: 7px 14px;
    font-size: 0.8rem;
    border-radius: 6px;
}


/* ─── SECTIONS ───────────────────────────────────── */

.section {
    padding: var(--section-pad) 0;
}

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

.section-title {
    font-size: 1.75rem;
    font-weight: 700;
    text-align: center;
    letter-spacing: -0.02em;
    margin-bottom: 8px;
}

.section-subtitle {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 48px;
    font-size: 1rem;
    max-width: 520px;
    margin-left: auto;
    margin-right: auto;
}

.center-text { text-align: center; margin-top: 40px; }


/* ─── CATEGORY GRID ──────────────────────────────── */

.category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 16px;
}

.category-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 28px 24px;
    text-decoration: none;
    color: var(--text);
    transition: border-color 0.2s, transform 0.2s;
}

.category-card:hover {
    border-color: var(--border-hover);
    transform: translateY(-2px);
}

.category-card .cat-label {
    display: inline-block;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--accent);
    margin-bottom: 12px;
}

.category-card h3 {
    font-size: 1.05rem;
    font-weight: 600;
    margin-bottom: 6px;
    letter-spacing: -0.01em;
}

.category-card p {
    color: var(--text-muted);
    font-size: 0.85rem;
    line-height: 1.5;
}


/* ─── FEATURES GRID ──────────────────────────────── */

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 16px;
}

.feature-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 28px 24px;
    transition: border-color 0.2s;
}

.feature-card:hover { border-color: var(--border-hover); }

.feature-card .feat-label {
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--accent);
    margin-bottom: 12px;
}

.feature-card h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 6px;
}

.feature-card p {
    font-size: 0.85rem;
    color: var(--text-muted);
    line-height: 1.6;
}


/* ─── FEATURED PRODUCTS ──────────────────────────── */

.product-grid-mini {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 16px;
}

.product-mini-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 24px;
    text-align: center;
    transition: border-color 0.2s;
}

.product-mini-card:hover { border-color: var(--border-hover); }

.product-mini-header {
    font-weight: 600;
    font-size: 1rem;
    margin-bottom: 4px;
}

.product-mini-spec {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: 12px;
}

.product-mini-price {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--accent);
    margin-bottom: 16px;
    font-variant-numeric: tabular-nums;
}


/* ─── FULL PRODUCT CATALOG ───────────────────────── */

.product-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 32px;
}

.product-header h1 {
    font-size: 1.75rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.product-controls {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.search-input {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 10px 16px;
    color: var(--text);
    font-size: 0.9rem;
    min-width: 240px;
    font-family: var(--font);
    transition: border-color 0.15s;
}

.search-input:focus {
    outline: none;
    border-color: var(--primary);
}

.search-input::placeholder { color: var(--text-muted); }

.filter-select {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 10px 16px;
    color: var(--text);
    font-size: 0.9rem;
    font-family: var(--font);
    cursor: pointer;
    transition: border-color 0.15s;
}

.filter-select:focus {
    outline: none;
    border-color: var(--primary);
}

.search-filter-bar {
    display: flex;
    gap: 12px;
    margin-bottom: 24px;
    flex-wrap: wrap;
}

.search-filter-bar input {
    flex: 1;
    min-width: 200px;
}

.table-responsive {
    overflow-x: auto;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
}

.product-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.875rem;
}

.product-table th {
    background: var(--card);
    padding: 12px 16px;
    text-align: left;
    font-weight: 600;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--text-secondary);
    white-space: nowrap;
    border-bottom: 1px solid var(--border);
}

.product-table td {
    padding: 12px 16px;
    border-bottom: 1px solid var(--border);
    vertical-align: middle;
}

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

.product-table tbody tr:hover td {
    background: rgba(99, 102, 241, 0.03);
}

.product-table .price-cell {
    font-weight: 600;
    color: var(--accent);
    white-space: nowrap;
    font-variant-numeric: tabular-nums;
}

.buy-btn {
    padding: 6px 16px;
    font-size: 0.8rem;
    background: var(--primary);
    color: #fff;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 600;
    font-family: var(--font);
    transition: background 0.15s;
    text-decoration: none;
    display: inline-block;
    white-space: nowrap;
}

.buy-btn:hover {
    background: var(--primary-hover);
}

.buy-btn-disabled {
    background: var(--muted);
    color: var(--bg);
    cursor: not-allowed;
    opacity: 0.6;
    display: inline-block;
    text-decoration: none;
    border-radius: 4px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border: none;
    padding: 6px 16px;
    font-size: 0.8rem;
}


/* ─── CONTENT PAGES (Legal, Shipping, Contact) ──── */

.page-hero {
    padding: 72px 0 48px;
    text-align: center;
    border-bottom: 1px solid var(--border);
}

.page-hero h1 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 800;
    letter-spacing: -0.03em;
}

.page-hero p {
    color: var(--text-secondary);
    max-width: 540px;
    margin: 12px auto 0;
}

.content-section {
    padding-bottom: 80px;
}

.content-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 32px;
    max-width: 800px;
    margin: 32px auto 0;
}

.content-card:first-child { margin-top: 0; }

.content-card h2 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 16px;
    letter-spacing: -0.01em;
}

.content-card h3 {
    font-size: 1.05rem;
    font-weight: 600;
    margin-bottom: 8px;
    margin-top: 20px;
}

.content-card p,
.content-card li {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 12px;
    font-size: 0.92rem;
}

.content-card ul { padding-left: 24px; }
.content-card strong { color: var(--text); }

.content-card a {
    color: var(--accent);
    text-decoration: none;
}

.content-card a:hover { text-decoration: underline; }

.warning-box {
    background: rgba(239, 68, 68, 0.06);
    border: 1px solid rgba(239, 68, 68, 0.2);
    border-radius: var(--radius);
    padding: 16px 20px;
    margin: 16px 0;
}

.warning-box p { color: var(--danger) !important; font-weight: 500; }

.info-box {
    background: var(--accent-dim);
    border: 1px solid rgba(52, 209, 183, 0.2);
    border-radius: var(--radius);
    padding: 16px 20px;
    margin: 16px 0;
}

.info-box p { color: var(--accent) !important; }

/* Shipping table inside content-card */
.content-card table {
    width: 100%;
    border-collapse: collapse;
}

.content-card th,
.content-card td {
    padding: 12px 8px;
    text-align: left;
    border-bottom: 1px solid var(--border);
    font-size: 0.9rem;
}

.content-card th {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    color: var(--text-secondary);
}


/* ─── CONTACT ────────────────────────────────────── */

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
    max-width: 800px;
    margin: 32px auto 0;
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 12px 16px;
    color: var(--text);
    font-size: 0.9rem;
    font-family: var(--font);
    margin-bottom: 12px;
    transition: border-color 0.15s;
}

.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--primary);
}

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

.contact-info-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 20px;
    margin-bottom: 12px;
}

.contact-info-card h3 {
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 6px;
}

.contact-info-card p {
    font-size: 0.85rem;
    color: var(--text-secondary);
}


/* ─── FOOTER ─────────────────────────────────────── */

.footer {
    border-top: 1px solid var(--border);
    padding: 48px 0 24px;
    margin-top: 40px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 32px;
}

.footer-col h4 {
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 16px;
    letter-spacing: -0.01em;
}

.footer-col p {
    color: var(--text-secondary);
    font-size: 0.85rem;
    line-height: 1.7;
}

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

.footer-col ul li { margin-bottom: 8px; }

.footer-col ul li a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.85rem;
    transition: color 0.15s;
}

.footer-col ul li a:hover { color: var(--accent); }

.footer-bottom {
    text-align: center;
    padding-top: 24px;
    border-top: 1px solid var(--border);
    color: var(--text-muted);
    font-size: 0.8rem;
}

.no-results {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-muted);
}


/* ─── RESPONSIVE ─────────────────────────────────── */

@media (max-width: 768px) {
    :root { --section-pad: 64px; }

    .hero { padding: 56px 0 48px; }
    .hero h1 { font-size: 2rem; }
    .hero-stats { gap: 28px; }

    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--bg);
        border-bottom: 1px solid var(--border);
        flex-direction: column;
        padding: 16px 24px;
        gap: 4px;
    }

    .nav-links.active { display: flex; }
    .mobile-menu-btn { display: flex; align-items: center; justify-content: center; }

    .category-grid { grid-template-columns: 1fr; }
    .product-header { flex-direction: column; align-items: flex-start; }
    .search-input { min-width: 100%; }
    .contact-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; gap: 24px; }
}

@media (max-width: 480px) {
    .hero-cta { flex-direction: column; align-items: center; }
    .hero-cta .btn { width: 100%; }
}