/* ══════════════════════════════════════════════════════════════
   CHEMICAL DETAIL PAGE — /chemicals/{slug}
   ══════════════════════════════════════════════════════════════ */

/* ── Page container ── */
.detail-page {
    padding: 0 0 calc(80px + env(safe-area-inset-bottom));
    animation: detailFadeIn 0.35s ease-out;
}
@keyframes detailFadeIn {
    from { opacity: 0; transform: translateY(12px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* ── Hero ── */
.detail-hero {
    position: relative; width: 100%; height: 200px; overflow: hidden;
    border-radius: 0 0 20px 20px; background: var(--gray-100);
}
.detail-hero-img { width: 100%; height: 100%; object-fit: cover; display: block; }
.detail-hero-placeholder {
    width: 100%; height: 100%; display: flex; align-items: center; justify-content: center;
    font-size: 3.5rem; opacity: 0.7;
}
.detail-hero-overlay {
    position: absolute; inset: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.55) 0%, transparent 60%); pointer-events: none;
}
.detail-hero-badges {
    position: absolute; bottom: 12px; left: 14px; display: flex; gap: 6px; flex-wrap: wrap; z-index: 2;
}

/* ── Badge ── */
.detail-badge {
    display: inline-flex; align-items: center; gap: 4px; font-size: 0.68rem; font-weight: 700;
    padding: 3px 10px; border-radius: var(--radius-full); white-space: nowrap;
    backdrop-filter: blur(4px); -webkit-backdrop-filter: blur(4px);
}
.detail-badge i { font-size: 0.6rem; }
.detail-badge-outline {
    background: rgba(255,255,255,0.85); color: var(--badge-c, var(--gray-700));
    border: 1px solid var(--badge-c, var(--gray-300));
}

/* ── Identity ── */
.detail-identity { padding: 16px 16px 4px; }
.detail-name-en {
    font-family: var(--font-display); font-size: 1.4rem; font-weight: 800;
    color: var(--gray-900); margin: 0; line-height: 1.2;
}
.detail-name-hi { font-family: var(--font-hindi); font-size: 0.85rem; color: var(--gray-400); margin: 2px 0 0; }
.detail-sci-name { font-size: 0.78rem; color: var(--gray-400); margin: 2px 0 0; }
.detail-aka { font-size: 0.72rem; color: var(--gray-500); margin: 4px 0 0; }
.detail-aka i { font-size: 0.65rem; margin-right: 2px; }

/* ── Actions ── */
.detail-actions { display: flex; gap: 8px; padding: 12px 16px; justify-content: center; }
.detail-act-btn {
    display: inline-flex; align-items: center; gap: 6px; height: 36px; padding: 0 14px;
    border-radius: 20px; background: white; border: 1.5px solid rgba(0, 0, 0, 0.06); box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
    color: var(--gray-600); font-size: 0.75rem; font-weight: 600; cursor: pointer;
    transition: background 0.15s, border-color 0.15s, color 0.15s, transform 0.1s;
}
.detail-act-btn:active { transform: scale(0.95); }
.detail-act-btn i { font-size: 0.8rem; }
.detail-act-btn.saved { background: #fffbeb; border-color: rgba(232,184,75,0.45); color: var(--color-accent); }

/* ── Stats ── */
.detail-stats-scroll { overflow-x: auto; padding: 0 16px; scrollbar-width: none; }
.detail-stats-scroll::-webkit-scrollbar { display: none; }
.detail-stats { display: flex; gap: 8px; padding-bottom: 2px; }
.detail-stat {
    flex: 0 0 auto; display: inline-flex; align-items: center; gap: 5px;
    height: 32px; padding: 0 12px; background: var(--gray-50);
    border: 1px solid rgba(0, 0, 0, 0.04); border-radius: var(--radius-full); white-space: nowrap;
}
.detail-stat i { font-size: 0.72rem; color: var(--color-primary); }
.detail-stat-val { font-size: 0.75rem; font-weight: 700; color: var(--gray-800); }
.detail-stat-unit { font-size: 0.65rem; color: var(--gray-500); font-weight: 500; }

/* ── Tabs — base styles in shared style.css ── */

/* ── Sections & Cards ── */
.detail-section { padding: 12px 16px 0; }
.detail-card {
    background: #fff; border-radius: 14px; padding: 0; margin-bottom: 12px;
    box-shadow: var(--shadow-sm); border: 1px solid rgba(0, 0, 0, 0.04);
    overflow: hidden; animation: cardSlideUp 0.3s ease-out both;
}
@keyframes cardSlideUp {
    from { opacity: 0; transform: translateY(10px); }
    to   { opacity: 1; transform: translateY(0); }
}
.detail-card:nth-child(2) { animation-delay: 50ms; }
.detail-card:nth-child(3) { animation-delay: 100ms; }

.detail-card-head {
    display: flex; align-items: center; gap: 10px; padding: 12px 14px; cursor: pointer;
}
.detail-card-head i { font-size: 0.9rem; color: var(--sev-color, var(--color-primary)); width: 20px; text-align: center; }
.detail-card-title {
    font-family: var(--font-display); font-size: 0.92rem; font-weight: 700;
    color: var(--gray-800); margin: 0; flex: 1;
}
.detail-card-body { padding: 0 14px 14px; }
.detail-card-green { border-left: 3px solid var(--color-primary); }
.detail-card-green .detail-card-head i { color: var(--color-primary); }
.detail-card-leaf { border-left: 3px solid #22c55e; background: linear-gradient(135deg, rgba(34,197,94,0.03), transparent); }
.detail-card-leaf .detail-card-head i { color: #22c55e; }
.detail-card-warn { border-left: 3px solid #f59e0b; background: linear-gradient(135deg, rgba(245,158,11,0.03), transparent); }
.detail-card-warn .detail-card-head i { color: #f59e0b; }

/* ── Text ── */
.detail-text-en { font-size: 0.82rem; color: var(--gray-700); line-height: 1.6; margin: 0 0 6px; }
.detail-text-hi {
    font-family: var(--font-hindi); font-size: 0.75rem; color: var(--gray-400);
    line-height: 1.5; margin: 0 0 10px; padding-top: 4px; border-top: 1px dotted var(--gray-200);
}

/* ── Spec grid ── */
.detail-spec-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.spec-item { display: flex; flex-direction: column; gap: 2px; }
.spec-full { grid-column: 1 / -1; }
.spec-label {
    font-size: 0.65rem; font-weight: 600; color: var(--gray-400);
    text-transform: uppercase; letter-spacing: 0.04em;
}
.spec-value { font-size: 0.82rem; font-weight: 600; color: var(--gray-800); }

/* ── Steps ── */
.detail-steps { list-style: none; counter-reset: step-counter; padding: 0; margin: 0; }
.detail-step {
    counter-increment: step-counter; display: flex; flex-direction: column; gap: 2px;
    padding: 10px 0 10px 36px; position: relative; border-bottom: 1px solid var(--gray-50);
}
.detail-step:last-child { border-bottom: none; }
.detail-step::before {
    content: counter(step-counter); position: absolute; left: 0; top: 10px;
    width: 24px; height: 24px; border-radius: 50%;
    background: var(--sev-color, var(--color-primary)); color: #fff;
    font-size: 0.7rem; font-weight: 700;
    display: flex; align-items: center; justify-content: center;
}
.detail-step-en { font-size: 0.82rem; color: var(--gray-700); line-height: 1.5; }

/* ── Confused list (reused for mixing) ── */
.confused-list { display: flex; flex-direction: column; gap: 8px; }
.confused-item {
    display: flex; align-items: center; gap: 10px; padding: 10px 12px;
    background: var(--gray-50); border-radius: 10px;
    font-size: 0.8rem; color: var(--gray-700); font-weight: 500;
}

/* ══ CHEMICAL-SPECIFIC: Dosage Calculator ══ */
.dose-calc {
    background: var(--gray-50);
    border-radius: 12px;
    padding: 14px;
    border: 1px solid rgba(0, 0, 0, 0.04);
}
.dose-per-litre,
.dose-tank-row,
.dose-result {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 0;
}
.dose-label {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--gray-500);
}
.dose-value {
    font-size: 0.88rem;
    font-weight: 700;
    color: var(--gray-800);
}
.dose-divider {
    height: 1px;
    background: var(--gray-200);
    margin: 4px 0;
}
.dose-tank-select {
    padding: 6px 10px;
    border-radius: 8px;
    border: 1.5px solid var(--gray-200);
    background: #fff;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--gray-700);
    cursor: pointer;
    -webkit-appearance: none;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%2364748b' viewBox='0 0 16 16'%3E%3Cpath d='M7.247 11.14 2.451 5.658C1.885 5.013 2.345 4 3.204 4h9.592a1 1 0 0 1 .753 1.659l-4.796 5.48a1 1 0 0 1-1.506 0z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 8px center;
    padding-right: 28px;
}
.dose-calc-result {
    color: var(--sev-color, var(--color-primary));
    font-size: 1rem;
}

/* ══ CHEMICAL-SPECIFIC: Toxicity badge ══ */
.tox-badge-large {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.82rem;
    font-weight: 700;
    padding: 8px 16px;
    border-radius: 10px;
}

/* ══ CHEMICAL-SPECIFIC: Safety grid ══ */
.safety-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
}
.safety-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 12px;
    background: var(--gray-50);
    border-radius: 10px;
    font-size: 0.78rem;
    font-weight: 500;
    color: var(--gray-700);
}
.safety-item i {
    font-size: 1rem;
    color: var(--sev-color, var(--color-primary));
    width: 20px;
    text-align: center;
}

/* ══ CHEMICAL-SPECIFIC: Related chemicals ══ */
.detail-related-head { margin-bottom: 12px; }
.detail-related-head .detail-card-title { font-size: 1rem; }
.detail-related-scroll {
    display: flex; gap: 12px; overflow-x: auto; scroll-snap-type: x mandatory;
    scrollbar-width: none; padding-bottom: 8px;
}
.detail-related-scroll::-webkit-scrollbar { display: none; }

.detail-related-chem .related-chem-card {
    flex: 0 0 auto;
    min-width: 160px;
    max-width: 200px;
    background: #fff;
    border-radius: 12px;
    border: 1px solid rgba(0, 0, 0, 0.04);
    padding: 12px;
    text-decoration: none;
    display: flex;
    flex-direction: column;
    gap: 4px;
    box-shadow: var(--shadow-sm);
    scroll-snap-align: start;
    transition: transform 0.1s, box-shadow 0.15s;
}
.detail-related-chem .related-chem-card:active {
    transform: scale(0.97);
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}
.related-chem-type {
    font-size: 0.65rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}
.related-chem-type i { font-size: 0.6rem; margin-right: 2px; }
.related-chem-name {
    font-size: 0.82rem;
    font-weight: 700;
    color: var(--gray-800);
}
.related-chem-dose {
    font-size: 0.7rem;
    color: var(--gray-500);
}

/* ── Lightbox ── */
.detail-lightbox {
    position: fixed; inset: 0; z-index: 1000; background: rgba(0,0,0,0.92);
    display: flex; align-items: center; justify-content: center; padding: 20px;
}
.detail-lightbox[hidden] { display: none; }
.lightbox-close {
    position: absolute; top: 16px; right: 16px; width: 40px; height: 40px;
    border-radius: 50%; background: rgba(255,255,255,0.15); border: none;
    color: #fff; font-size: 1.2rem; cursor: pointer; z-index: 1001;
    display: flex; align-items: center; justify-content: center;
}
.lightbox-img { max-width: 100%; max-height: 80vh; border-radius: 12px; object-fit: contain; }

/* ── Popular Brands ── */
.chem-brands-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 14px;
}
.chem-brand-item {
    display: flex;
    gap: 12px;
    padding: 12px;
    background: var(--gray-50);
    border: 1px solid var(--gray-100);
    border-radius: var(--radius-md);
    transition: box-shadow var(--transition-base);
}
.chem-brand-item.is-sponsored {
    border-color: rgba(232, 184, 75, 0.3);
    background: linear-gradient(135deg, #fffbeb 0%, #fff 100%);
}
.chem-brand-img {
    width: 52px;
    height: 52px;
    border-radius: var(--radius-sm);
    object-fit: cover;
    flex-shrink: 0;
}
.chem-brand-img-placeholder {
    width: 52px;
    height: 52px;
    border-radius: var(--radius-sm);
    background: var(--gray-100);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    color: var(--gray-300);
    flex-shrink: 0;
}
.chem-brand-body {
    flex: 1;
    min-width: 0;
}
.chem-brand-name-row {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-bottom: 1px;
}
.chem-brand-name {
    font-size: 0.88rem;
    font-weight: 700;
    color: var(--gray-900);
}
.chem-brand-sponsor-badge {
    font-size: 0.58rem;
    font-weight: 700;
    color: #b45309;
    background: rgba(245, 158, 11, 0.12);
    padding: 1px 7px;
    border-radius: var(--radius-full);
    white-space: nowrap;
}
.chem-brand-name-hi {
    display: block;
    font-family: var(--font-hindi);
    font-size: 0.7rem;
    color: var(--gray-400);
    margin-bottom: 2px;
}
.chem-brand-mfg {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 0.7rem;
    color: var(--gray-500);
    margin-bottom: 4px;
}
.chem-brand-mfg i {
    font-size: 0.6rem;
    color: var(--gray-400);
}
.chem-brand-desc {
    font-size: 0.75rem;
    color: var(--gray-600);
    line-height: 1.5;
    margin: 0 0 6px;
}
.chem-brand-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    align-items: center;
}
.chem-brand-rating {
    font-size: 0.68rem;
    font-weight: 600;
    color: #b45309;
    display: flex;
    align-items: center;
    gap: 3px;
}
.chem-brand-rating i {
    font-size: 0.6rem;
    color: #f59e0b;
}
.chem-brand-rating small {
    font-weight: 400;
    color: var(--gray-400);
}
.chem-brand-pack {
    font-size: 0.65rem;
    font-weight: 600;
    color: var(--gray-500);
    background: white;
    border: 1px solid var(--gray-200);
    padding: 1px 7px;
    border-radius: var(--radius-full);
}
.chem-brand-cta {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    margin-top: 6px;
    padding: 5px 14px;
    background: var(--color-accent);
    color: var(--bg-primary);
    font-size: 0.72rem;
    font-weight: 700;
    border-radius: var(--radius-full);
    text-decoration: none;
    transition: opacity var(--transition-fast);
}
.chem-brand-cta:active { opacity: 0.85; }
.chem-brand-cta i { font-size: 0.6rem; }
/* Pack size cards */
.brand-packs-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}
.brand-pack-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
    background: white;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-md);
    padding: 12px 18px;
    min-width: 80px;
    text-align: center;
}
.brand-pack-weight {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--gray-800);
}
.brand-pack-mrp {
    font-size: 1rem;
    font-weight: 800;
    color: var(--color-primary);
}
.brand-pack-label {
    font-size: 0.6rem;
    color: var(--gray-400);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.chem-brands-note {
    font-size: 0.72rem;
    color: var(--gray-400);
    margin: 0;
    line-height: 1.5;
    display: flex;
    align-items: flex-start;
    gap: 6px;
}
.chem-brands-note i {
    flex-shrink: 0;
    margin-top: 2px;
    font-size: 0.65rem;
}

/* ── Desktop ── */
@media (min-width: 1024px) {
    .detail-hero { height: 300px; border-radius: 0 0 24px 24px; }
    .detail-identity, .detail-actions, .detail-stats-scroll, .detail-section {
        max-width: 760px; margin-left: auto; margin-right: auto;
    }
    .detail-tabs-scroll { max-width: 760px; margin-left: auto; margin-right: auto; }
    .detail-stats { flex-wrap: wrap; overflow-x: visible; }
    .detail-spec-grid { grid-template-columns: 1fr 1fr 1fr; }
}