:root {
    --bg: #0e0f13;
    --bg-elev: #161821;
    --bg-elev-2: #1f2230;
    --border: #2a2d3c;
    --text: #e6e8ef;
    --text-dim: #9aa0b3;
    --muted: #6e7385;
    --accent: #7c9eff;
    --accent-2: #5dd4a8;
    --warn: #f3b75a;
    --danger: #e76d6d;
    --radius: 10px;
    --container: 1200px;
    --font: 'Inter', system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { overflow-x: hidden; }
body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    font-size: 16px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
    width: 100%;
}
img, svg { max-width: 100%; height: auto; }
.container {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 24px;
    width: 100%;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

h1, h2, h3, h4 { line-height: 1.25; margin: 0 0 .6em; font-weight: 600; }
h1 { font-size: 2.2rem; }
h2 { font-size: 1.5rem; }
h3 { font-size: 1.15rem; }
p { margin: 0 0 1em; }
.muted { color: var(--muted); }

/* Header */
.site-header {
    background: var(--bg-elev);
    border-bottom: 1px solid var(--border);
    padding: 14px 0;
    position: sticky;
    top: 0;
    z-index: 50;
    backdrop-filter: blur(8px);
}
.site-header { position: sticky; }
.site-header .container { position: relative; }
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: nowrap; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--text); font-weight: 700; font-size: 1.2rem; flex-shrink: 0; }
.brand:hover { text-decoration: none; opacity: .9; }
.brand-logo {
    height: 44px;
    width: auto;
    display: block;
    max-width: 100%;
}
.brand-logo-sm { height: 38px; }

.nav-toggle-checkbox { display: none; }
.nav-toggle { display: none; }

.primary-nav { display: flex; gap: 20px; flex-wrap: wrap; }
.primary-nav a {
    color: var(--text-dim);
    font-weight: 500;
    padding: 4px 0;
    border-bottom: 2px solid transparent;
}
.primary-nav a:hover { color: var(--text); text-decoration: none; }
.primary-nav a.active { color: var(--text); border-bottom-color: var(--accent); }

@media (max-width: 820px) {
    .nav-toggle {
        display: flex;
        flex-direction: column;
        justify-content: center;
        gap: 5px;
        width: 40px;
        height: 40px;
        cursor: pointer;
        padding: 8px;
        border-radius: 8px;
        background: var(--bg-elev-2);
        border: 1px solid var(--border);
    }
    .nav-toggle span {
        display: block;
        width: 22px;
        height: 2px;
        background: var(--text);
        transition: transform .2s, opacity .2s;
        transform-origin: center;
    }
    .nav-toggle-checkbox:checked ~ .nav-toggle span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
    .nav-toggle-checkbox:checked ~ .nav-toggle span:nth-child(2) { opacity: 0; }
    .nav-toggle-checkbox:checked ~ .nav-toggle span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

    .primary-nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        flex-direction: column;
        gap: 0;
        background: var(--bg-elev);
        border-bottom: 1px solid var(--border);
        padding: 8px 0;
        max-height: calc(100vh - 80px);
        overflow-y: auto;
    }
    .nav-toggle-checkbox:checked ~ .primary-nav { display: flex; }
    .primary-nav a {
        padding: 14px 24px;
        border-bottom: 1px solid var(--border);
        border-left: 3px solid transparent;
    }
    .primary-nav a:last-child { border-bottom: 0; }
    .primary-nav a.active {
        border-bottom-color: var(--border);
        border-left-color: var(--accent);
        background: var(--bg-elev-2);
    }
    .brand-logo { height: 36px; }
}

/* Main */
.site-main { flex: 1; padding-bottom: 64px; }

/* Hero */
.hero {
    background: linear-gradient(180deg, var(--bg-elev) 0%, var(--bg) 100%);
    border-bottom: 1px solid var(--border);
    padding: 56px 0 40px;
    margin-bottom: 32px;
}
.hero h1 { font-size: 2.4rem; margin-bottom: 8px; }
.hero .lead { color: var(--text-dim); font-size: 1.1rem; max-width: 720px; }
.search-form {
    display: flex;
    gap: 8px;
    max-width: 640px;
    margin-top: 24px;
}
.search-form input {
    flex: 1;
    padding: 14px 18px;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    background: var(--bg-elev-2);
    color: var(--text);
    font-size: 1rem;
}
.search-form input:focus { outline: 2px solid var(--accent); border-color: transparent; }
.search-form button {
    padding: 14px 22px;
    border-radius: var(--radius);
    border: none;
    background: var(--accent);
    color: #0b0d12;
    font-weight: 600;
    cursor: pointer;
    font-size: 1rem;
}
.search-form button:hover { filter: brightness(1.05); }

/* Filters */
.filters { margin-bottom: 24px; }
.filters .container { display: flex; gap: 8px; flex-wrap: wrap; }
.chip {
    display: inline-block;
    padding: 6px 14px;
    border-radius: 999px;
    background: var(--bg-elev);
    border: 1px solid var(--border);
    color: var(--text-dim);
    font-size: .9rem;
    font-weight: 500;
}
.chip:hover { color: var(--text); text-decoration: none; }
.chip.is-active { background: var(--accent); color: #0b0d12; border-color: var(--accent); }

/* Drug grid */
.drug-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 16px;
}
.drug-card {
    background: var(--bg-elev);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 18px 20px;
    color: var(--text);
    transition: border-color .15s, transform .15s;
}
.drug-card:hover { border-color: var(--accent); text-decoration: none; transform: translateY(-2px); }
.drug-card h3 { margin: 0 0 8px; color: var(--text); }
.drug-card p { color: var(--text-dim); font-size: .9rem; margin: 0; }
.card-cats { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 8px; }

.cat-pill {
    display: inline-block;
    padding: 2px 10px;
    border-radius: 999px;
    background: var(--bg-elev-2);
    border: 1px solid var(--border);
    font-size: .75rem;
    color: var(--text-dim);
    text-transform: capitalize;
}
.cat-psychedelic { background: rgba(154, 102, 255, .15); border-color: rgba(154, 102, 255, .35); color: #c9b1ff; }
.cat-stimulant { background: rgba(255, 156, 90, .15); border-color: rgba(255, 156, 90, .35); color: #ffb98a; }
.cat-depressant { background: rgba(90, 144, 255, .15); border-color: rgba(90, 144, 255, .35); color: #9ab8ff; }
.cat-opioid { background: rgba(255, 90, 120, .15); border-color: rgba(255, 90, 120, .35); color: #ff9bb1; }
.cat-dissociative { background: rgba(90, 220, 200, .15); border-color: rgba(90, 220, 200, .35); color: #88e9d6; }
.cat-deliriant { background: rgba(255, 80, 80, .18); border-color: rgba(255, 80, 80, .4); color: #ff9d9d; }
.cat-common { background: rgba(120, 220, 120, .12); border-color: rgba(120, 220, 120, .3); color: #a9e6a9; }
.cat-habit-forming { background: rgba(243, 183, 90, .15); border-color: rgba(243, 183, 90, .35); color: #f5cf90; }

.empty { color: var(--text-dim); padding: 40px 0; text-align: center; }

/* Drug detail */
.drug-header { background: var(--bg-elev); border-bottom: 1px solid var(--border); padding: 32px 0 24px; margin-bottom: 32px; }
.breadcrumb { color: var(--text-dim); font-size: .9rem; margin-bottom: 8px; }
.breadcrumb a { color: var(--text-dim); }
.aliases { color: var(--text-dim); }
.aliases em { color: var(--text); font-style: normal; }
.cats { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 10px; }

.drug-body { display: grid; grid-template-columns: minmax(0, 1fr) 320px; gap: 24px; }
.drug-main, .drug-side { min-width: 0; }
.card {
    background: var(--bg-elev);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    margin-bottom: 20px;
    min-width: 0;
    overflow-wrap: break-word;
    word-wrap: break-word;
}
.card a { word-break: break-word; }
.card h2 { margin-top: 0; font-size: 1.3rem; }
.card.sticky { position: sticky; top: 80px; }

.dose-roa { color: var(--accent); margin-top: 16px; }
.dose-table { width: 100%; border-collapse: collapse; margin-bottom: 12px; table-layout: fixed; }
.dose-table th, .dose-table td { text-align: left; padding: 8px 12px; border-bottom: 1px solid var(--border); word-wrap: break-word; overflow-wrap: anywhere; }
.dose-table th { width: 35%; color: var(--text-dim); font-weight: 500; }
.dose-threshold td { color: #888; }
.dose-light td { color: #88c5ff; }
.dose-common td { color: #9bd99b; }
.dose-strong td { color: var(--warn); }
.dose-heavy td { color: var(--danger); }
.dose-dangerous td { color: var(--danger); font-weight: 600; }
.dose-note { padding: 12px 14px; background: var(--bg-elev-2); border-left: 3px solid var(--warn); border-radius: 6px; }

.timing { list-style: none; padding: 0; margin: 0; }
.timing li { padding: 8px 0; border-bottom: 1px solid var(--border); }
.timing li:last-child { border-bottom: 0; }

.effects { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 8px; list-style: none; padding: 0; margin: 0; }
.effects li { padding: 8px 12px; background: var(--bg-elev-2); border-radius: 6px; }

.combos { display: flex; flex-direction: column; gap: 8px; }
.combo-row {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 8px 12px;
    align-items: center;
    padding: 10px 12px;
    background: var(--bg-elev-2);
    border-radius: 6px;
}
.combo-name { font-weight: 600; }
.combo-status {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 4px;
    color: #fff;
    font-size: .85rem;
    font-weight: 500;
    text-shadow: 0 1px 0 rgba(0,0,0,.2);
}
.combo-note { grid-column: 1 / -1; color: var(--text-dim); font-size: .85rem; margin: 6px 0 0; }

.pweffects {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 6px;
    list-style: none;
    padding: 0;
    margin: 0;
}
.pweffects li { padding: 6px 0; }

.sources { padding-left: 18px; color: var(--text-dim); font-size: .9rem; }
.sources li { margin-bottom: 6px; word-wrap: break-word; overflow-wrap: anywhere; }

.drug-side dl { margin: 0 0 16px; }
.drug-side dt { color: var(--text-dim); font-size: .8rem; text-transform: uppercase; letter-spacing: .04em; margin-top: 10px; }
.drug-side dd { margin: 2px 0 0; font-weight: 500; }
.drug-side .ext-links { list-style: none; padding: 0; margin: 0 0 16px; }
.drug-side .ext-links li { padding: 4px 0; }
.warn {
    background: rgba(243, 183, 90, .1);
    border: 1px solid rgba(243, 183, 90, .3);
    color: #f3d49a;
    padding: 12px 14px;
    border-radius: 8px;
    font-size: .9rem;
    margin: 0;
}

/* Checker */
.checker-form {
    background: var(--bg-elev);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    margin-bottom: 24px;
}
.checker-label { display: block; color: var(--text-dim); font-size: .85rem; margin-bottom: 6px; font-weight: 500; }
.checker-input-wrap { display: flex; gap: 8px; flex-wrap: wrap; align-items: flex-end; }
.checker-input-wrap input {
    flex: 1;
    min-width: 200px;
    padding: 12px 14px;
    border-radius: 8px;
    border: 1px solid var(--border);
    background: var(--bg-elev-2);
    color: var(--text);
    font: inherit;
}
.checker-input-wrap input:focus { outline: 2px solid var(--accent); border-color: transparent; }
.checker-chips { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 14px; min-height: 32px; }
.chip-selected {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 8px 6px 14px;
    background: var(--bg-elev-2);
    border: 1px solid var(--border);
    border-radius: 999px;
    font-size: .9rem;
    color: var(--text);
}
.chip-selected button {
    background: rgba(255,255,255,.06);
    border: none;
    color: var(--text-dim);
    width: 22px;
    height: 22px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1rem;
    line-height: 1;
    display: grid;
    place-items: center;
}
.chip-selected button:hover { background: var(--danger); color: #fff; }
.checker-actions { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; margin-top: 18px; }
.btn-lg { padding: 14px 26px; font-size: 1rem; }
.btn:disabled { opacity: .45; cursor: not-allowed; }
.nav-cta { color: var(--accent-2) !important; font-weight: 600; }

.result-banner {
    padding: 24px;
    border-radius: var(--radius);
    color: #fff;
    margin-bottom: 24px;
    text-shadow: 0 1px 1px rgba(0,0,0,.25);
}
.result-banner h2 { color: #fff; margin: 0 0 6px; }
.result-banner p { margin: 0; opacity: .95; }
.result-title { margin-top: 28px; }

.pair-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-bottom: 20px; }
.pair-grid .card { margin-bottom: 0; }
.quick-facts { display: grid; grid-template-columns: 1fr 1fr; gap: 6px 16px; margin: 12px 0; }
.quick-facts dt { color: var(--text-dim); font-size: .8rem; text-transform: uppercase; letter-spacing: .04em; }
.quick-facts dd { margin: 0; font-weight: 500; }
.faq { padding: 10px 0; border-bottom: 1px solid var(--border); }
.faq:last-of-type { border-bottom: 0; }
.faq summary { cursor: pointer; font-weight: 600; padding: 6px 0; }
.faq p { margin: 8px 0 0; color: var(--text-dim); }
.warn-card { border-color: rgba(243, 183, 90, .4); background: rgba(243, 183, 90, .06); }

@media (max-width: 720px) {
    .pair-grid { grid-template-columns: 1fr; }
    .quick-facts { grid-template-columns: 1fr; }
}

/* Combos page */
.legend { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 16px; }
.legend-item { display: inline-flex; align-items: center; gap: 6px; font-size: .85rem; color: var(--text-dim); }
.legend-swatch { width: 14px; height: 14px; border-radius: 3px; display: inline-block; }
.combo-panel {
    background: var(--bg-elev);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 12px 18px;
    margin-bottom: 8px;
}
.combo-panel summary { cursor: pointer; padding: 6px 0; font-size: 1.05rem; }
.combo-panel[open] { padding-bottom: 18px; }
.combo-panel[open] > .combos { margin-top: 12px; }

/* Footer */
.site-footer {
    border-top: 1px solid var(--border);
    background: var(--bg-elev);
    padding: 32px 0;
    color: var(--text-dim);
    font-size: .9rem;
}
.site-footer .disclaimer { font-size: .82rem; max-width: 720px; }
.site-footer p { margin: 0 0 6px; }

/* Admin */
.admin-wrap { display: grid; grid-template-columns: 240px 1fr; min-height: 100vh; }
.admin-side {
    background: var(--bg-elev);
    border-right: 1px solid var(--border);
    padding: 24px 0;
}
.admin-side .brand { padding: 0 20px 16px; }
.admin-side-label { padding: 0 20px 16px; margin: 0 0 12px; color: var(--text-dim); font-size: .8rem; text-transform: uppercase; letter-spacing: .08em; border-bottom: 1px solid var(--border); }
.admin-nav { display: flex; flex-direction: column; }
.admin-nav a {
    padding: 10px 24px;
    color: var(--text-dim);
    border-left: 3px solid transparent;
}
.admin-nav a:hover { color: var(--text); background: var(--bg-elev-2); text-decoration: none; }
.admin-nav a.active { color: var(--text); border-left-color: var(--accent); background: var(--bg-elev-2); }
.admin-nav form { padding: 16px 24px 0; }
.admin-nav button {
    background: none;
    border: 1px solid var(--border);
    color: var(--text-dim);
    padding: 8px 14px;
    border-radius: 6px;
    cursor: pointer;
    width: 100%;
}
.admin-nav button:hover { color: var(--text); border-color: var(--text-dim); }
.admin-main { padding: 32px 40px; }
.admin-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 24px; flex-wrap: wrap; gap: 12px; }
.btn {
    display: inline-block;
    padding: 10px 18px;
    border-radius: 8px;
    background: var(--accent);
    color: #0b0d12;
    font-weight: 600;
    cursor: pointer;
    border: none;
    font-size: .95rem;
}
.btn:hover { filter: brightness(1.05); text-decoration: none; }
.btn-secondary { background: var(--bg-elev-2); color: var(--text); border: 1px solid var(--border); }
.btn-danger { background: var(--danger); color: #fff; }
.btn-sm { padding: 6px 12px; font-size: .85rem; }

.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 14px; margin-bottom: 28px; }
.stat { background: var(--bg-elev); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; }
.stat-value { font-size: 2rem; font-weight: 700; }
.stat-label { color: var(--text-dim); font-size: .9rem; }

.data-table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
.data-table { width: 100%; border-collapse: collapse; background: var(--bg-elev); border-radius: var(--radius); overflow: hidden; }
.data-table th, .data-table td { padding: 12px 16px; text-align: left; border-bottom: 1px solid var(--border); }
.data-table th { background: var(--bg-elev-2); color: var(--text-dim); font-weight: 500; font-size: .85rem; text-transform: uppercase; letter-spacing: .04em; }
.data-table tr:last-child td { border-bottom: 0; }
.data-table .actions { display: flex; gap: 6px; justify-content: flex-end; }
.pill { padding: 2px 10px; border-radius: 999px; font-size: .75rem; }
.pill-on { background: rgba(93, 212, 168, .15); color: #5dd4a8; }
.pill-off { background: rgba(231, 109, 109, .15); color: #e76d6d; }
.pill-translated { background: rgba(124, 158, 255, .15); color: var(--accent); }

.form-grid { display: grid; gap: 18px; max-width: 980px; }
.form-row { display: grid; gap: 6px; }
.form-row label { color: var(--text-dim); font-size: .85rem; font-weight: 500; }
.form-row input[type=text], .form-row input[type=email], .form-row input[type=password],
.form-row textarea, .form-row select {
    width: 100%;
    padding: 10px 14px;
    border-radius: 8px;
    border: 1px solid var(--border);
    background: var(--bg-elev-2);
    color: var(--text);
    font: inherit;
}
.form-row textarea { min-height: 110px; resize: vertical; }
.form-row .hint { color: var(--muted); font-size: .8rem; }
.form-actions { display: flex; gap: 10px; justify-content: flex-end; padding-top: 8px; }
.form-cols { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }

.alert { padding: 12px 16px; border-radius: 8px; margin-bottom: 18px; }
.alert-success { background: rgba(93, 212, 168, .12); color: #92e6c4; border: 1px solid rgba(93, 212, 168, .25); }
.alert-error { background: rgba(231, 109, 109, .12); color: #f4a8a8; border: 1px solid rgba(231, 109, 109, .25); }

.search-bar { display: flex; gap: 8px; margin-bottom: 16px; max-width: 480px; }
.search-bar input { flex: 1; padding: 10px 14px; border-radius: 8px; border: 1px solid var(--border); background: var(--bg-elev-2); color: var(--text); }

.login-wrap { min-height: 100vh; display: grid; place-items: center; background: var(--bg); padding: 24px; }
.login-card { background: var(--bg-elev); border: 1px solid var(--border); border-radius: var(--radius); padding: 36px; width: 100%; max-width: 420px; }
.login-card h1 { font-size: 1.4rem; margin-bottom: 6px; }
.login-card p.muted { margin-bottom: 24px; }

@media (max-width: 920px) {
    .drug-body { grid-template-columns: 1fr; }
    .admin-wrap { grid-template-columns: 1fr; }
    .admin-side { display: flex; flex-direction: column; }
    .admin-main { padding: 24px 16px; }
    .form-cols { grid-template-columns: 1fr; }
    .card.sticky { position: static; }
}

@media (max-width: 600px) {
    .container { padding: 0 16px; }
    h1 { font-size: 1.8rem; }
    .hero { padding: 36px 0 28px; }
    .hero h1 { font-size: 1.9rem; }
    .hero .lead { font-size: 1rem; }
    .search-form { flex-direction: column; }
    .search-form button { width: 100%; }
    .card { padding: 18px 16px; }
    .drug-grid { grid-template-columns: 1fr; }
    .effects { grid-template-columns: 1fr; }
    .pweffects { grid-template-columns: 1fr; }
    .combo-row { grid-template-columns: 1fr; }
    .combo-row .combo-status { justify-self: start; }
    .dose-table th { width: 45%; }
    .data-table { font-size: .9rem; }
    .data-table th, .data-table td { padding: 10px 12px; }
    .data-table .actions { flex-direction: column; }
    .admin-header { flex-direction: column; align-items: stretch; }
}