/* ============================================================
   ZUBAN — Regional Language Dictionary
   Mobile-first CSS — Editorial/Manuscript Aesthetic
   ============================================================ */

/* ── Google Fonts (loaded in header.php) ── */
/* Noto Sans Devanagari, Noto Nastaliq Urdu, Source Serif 4, DM Sans */

:root {
    /* Warm parchment palette */
    --zb-bg:          #FAF6F0;
    --zb-bg-card:     #FFFFFF;
    --zb-bg-warm:     #F5EDE3;
    --zb-bg-accent:   #FFF8EF;
    --zb-ink:         #2C2418;
    --zb-ink-light:   #6B5D4F;
    --zb-ink-muted:   #9B8E7E;
    --zb-border:      #E8DFD2;
    --zb-border-light:#F0EAE0;

    /* Accent colors */
    --zb-primary:     #C45D3E;   /* Warm terracotta */
    --zb-primary-soft:#F4E2D8;
    --zb-secondary:   #3B7A57;   /* Forest green */
    --zb-secondary-soft:#DFF0E5;
    --zb-gold:        #B8860B;
    --zb-blue:        #4A6FA5;

    /* Status */
    --zb-verified:    #2E7D32;
    --zb-unverified:  #E65100;
    --zb-reported:    #F9A825;

    /* Typography */
    --zb-font-body:    'DM Sans', 'Noto Sans Devanagari', sans-serif;
    --zb-font-display: 'Source Serif 4', 'Noto Sans Devanagari', Georgia, serif;
    --zb-font-deva:    'Noto Sans Devanagari', sans-serif;
    --zb-font-urdu:    'Noto Nastaliq Urdu', 'Jameel Noori Nastaleeq', serif;
    --zb-font-mono:    'JetBrains Mono', 'Fira Code', monospace;

    /* Sizing */
    --zb-radius:      12px;
    --zb-radius-sm:   8px;
    --zb-radius-pill:  50px;
    --zb-shadow:      0 1px 3px rgba(44,36,24,0.06), 0 4px 12px rgba(44,36,24,0.04);
    --zb-shadow-lg:   0 4px 16px rgba(44,36,24,0.08), 0 12px 40px rgba(44,36,24,0.06);

    /* Bottom nav height */
    --zb-nav-height:  64px;
    --zb-safe-bottom: env(safe-area-inset-bottom, 0px);
}

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

html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
    -webkit-tap-highlight-color: transparent;
}

body {
    font-family: var(--zb-font-body);
    background: var(--zb-bg);
    color: var(--zb-ink);
    line-height: 1.6;
    min-height: 100dvh;
    padding-bottom: calc(var(--zb-nav-height) + var(--zb-safe-bottom) + 16px);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

/* ── Typography ────────────────────────────────────────────── */
.zb-display {
    font-family: var(--zb-font-display);
    font-weight: 600;
    line-height: 1.25;
    letter-spacing: -0.01em;
}

.zb-devanagari {
    font-family: var(--zb-font-deva);
    line-height: 1.5;
}

.zb-urdu {
    font-family: var(--zb-font-urdu);
    direction: rtl;
    text-align: right;
    line-height: 2;
    font-size: 1.15em;
}

.zb-ipa {
    font-family: var(--zb-font-mono);
    font-size: 0.9em;
    color: var(--zb-blue);
    background: rgba(74, 111, 165, 0.06);
    padding: 2px 6px;
    border-radius: 4px;
}

.zb-roman {
    font-style: italic;
    color: var(--zb-ink-light);
}

/* ── Header ────────────────────────────────────────────────── */
.zb-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(250,246,240,0.92);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--zb-border-light);
    padding: 12px 16px;
}

.zb-header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 600px;
    margin: 0 auto;
}

.zb-logo {
    display: flex;
    align-items: baseline;
    gap: 6px;
    text-decoration: none;
}

.zb-logo-text {
    font-family: var(--zb-font-display);
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--zb-primary);
    letter-spacing: -0.02em;
}

.zb-logo-script {
    font-family: var(--zb-font-urdu);
    font-size: 1.1rem;
    color: var(--zb-ink-muted);
    direction: rtl;
}

.zb-header-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

/* ── Search Bar ────────────────────────────────────────────── */
.zb-search-wrap {
    padding: 0 16px 16px;
    max-width: 600px;
    margin: 0 auto;
}

.zb-search {
    position: relative;
}

.zb-search input {
    width: 100%;
    padding: 14px 16px 14px 44px;
    border: 2px solid var(--zb-border);
    border-radius: var(--zb-radius);
    font-family: var(--zb-font-body);
    font-size: 1rem;
    background: var(--zb-bg-card);
    color: var(--zb-ink);
    transition: border-color 0.2s, box-shadow 0.2s;
    outline: none;
}

.zb-search input:focus {
    border-color: var(--zb-primary);
    box-shadow: 0 0 0 3px var(--zb-primary-soft);
}

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

.zb-search-icon {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    width: 20px;
    height: 20px;
    color: var(--zb-ink-muted);
}

.zb-search-hint {
    display: flex;
    gap: 6px;
    margin-top: 8px;
    flex-wrap: wrap;
}

.zb-search-hint span {
    font-size: 0.75rem;
    color: var(--zb-ink-muted);
    background: var(--zb-bg-warm);
    padding: 3px 10px;
    border-radius: var(--zb-radius-pill);
    cursor: pointer;
    transition: background 0.15s;
}

.zb-search-hint span:active {
    background: var(--zb-border);
}

/* ── Cards ─────────────────────────────────────────────────── */
.zb-card {
    background: var(--zb-bg-card);
    border-radius: var(--zb-radius);
    padding: 16px;
    margin-bottom: 12px;
    border: 1px solid var(--zb-border-light);
    box-shadow: var(--zb-shadow);
    transition: transform 0.15s, box-shadow 0.15s;
}

.zb-card:active {
    transform: scale(0.985);
}

.zb-card-link {
    text-decoration: none;
    color: inherit;
    display: block;
}

/* Word Card */
.zb-word-card-title {
    font-family: var(--zb-font-display);
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--zb-ink);
    margin-bottom: 2px;
}

.zb-word-card-hindi {
    font-family: var(--zb-font-deva);
    font-size: 1.1rem;
    color: var(--zb-ink-light);
}

.zb-word-card-urdu {
    font-family: var(--zb-font-urdu);
    direction: rtl;
    text-align: right;
    font-size: 1.1rem;
    color: var(--zb-ink-light);
    line-height: 1.8;
}

.zb-word-card-meta {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 8px;
    flex-wrap: wrap;
}

/* ── Badges / Tags ─────────────────────────────────────────── */
.zb-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 3px 10px;
    border-radius: var(--zb-radius-pill);
    font-size: 0.73rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.zb-badge-pos {
    background: var(--zb-primary-soft);
    color: var(--zb-primary);
}

.zb-badge-category {
    background: var(--zb-secondary-soft);
    color: var(--zb-secondary);
}

.zb-badge-verified {
    background: #E8F5E9;
    color: var(--zb-verified);
}

.zb-badge-unverified {
    background: #FFF3E0;
    color: var(--zb-unverified);
}

.zb-badge-count {
    background: var(--zb-bg-warm);
    color: var(--zb-ink-light);
}

/* ── Variant Display ───────────────────────────────────────── */
.zb-variant {
    background: var(--zb-bg-accent);
    border-radius: var(--zb-radius);
    padding: 16px;
    margin-bottom: 12px;
    border-left: 3px solid var(--zb-primary);
}

.zb-variant.verified {
    border-left-color: var(--zb-verified);
}

.zb-variant-local {
    font-family: var(--zb-font-deva);
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--zb-ink);
    line-height: 1.4;
}

.zb-variant-roman {
    font-style: italic;
    color: var(--zb-ink-light);
    margin-top: 2px;
}

.zb-variant-phonetics {
    display: flex;
    gap: 16px;
    margin-top: 8px;
    flex-wrap: wrap;
}

.zb-variant-phonetics label {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--zb-ink-muted);
    font-weight: 600;
}

.zb-variant-regions {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
    margin-top: 10px;
}

.zb-region-chip {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 12px;
    border-radius: var(--zb-radius-pill);
    font-size: 0.8rem;
    background: var(--zb-bg-card);
    border: 1px solid var(--zb-border);
    color: var(--zb-ink-light);
    text-decoration: none;
    transition: background 0.15s;
}

.zb-region-chip:active {
    background: var(--zb-bg-warm);
}

.zb-region-chip .dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--zb-reported);
}

.zb-region-chip .dot.confirmed { background: var(--zb-verified); }
.zb-region-chip .dot.uncertain { background: var(--zb-ink-muted); }

/* ── Example Sentence ──────────────────────────────────────── */
.zb-example {
    background: var(--zb-bg-card);
    border-radius: var(--zb-radius-sm);
    padding: 12px;
    margin-top: 8px;
    border: 1px solid var(--zb-border-light);
}

.zb-example-sentence {
    font-family: var(--zb-font-deva);
    font-size: 1.05rem;
    color: var(--zb-ink);
    line-height: 1.6;
}

.zb-example-translation {
    font-size: 0.88rem;
    color: var(--zb-ink-light);
    margin-top: 4px;
    font-style: italic;
}

/* ── Bottom Navigation ─────────────────────────────────────── */
.zb-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: calc(var(--zb-nav-height) + var(--zb-safe-bottom));
    padding-bottom: var(--zb-safe-bottom);
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-top: 1px solid var(--zb-border-light);
    display: flex;
    justify-content: space-around;
    align-items: center;
    z-index: 200;
}

.zb-nav a {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 3px;
    padding: 6px 12px;
    text-decoration: none;
    color: var(--zb-ink-muted);
    font-size: 0.68rem;
    font-weight: 500;
    transition: color 0.15s;
    position: relative;
}

.zb-nav a.active {
    color: var(--zb-primary);
}

.zb-nav a.active::before {
    content: '';
    position: absolute;
    top: -1px;
    left: 50%;
    transform: translateX(-50%);
    width: 24px;
    height: 3px;
    background: var(--zb-primary);
    border-radius: 0 0 3px 3px;
}

.zb-nav svg {
    width: 22px;
    height: 22px;
}

/* ── Buttons ───────────────────────────────────────────────── */
.zb-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 12px 24px;
    border: none;
    border-radius: var(--zb-radius);
    font-family: var(--zb-font-body);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.1s, opacity 0.15s;
    outline: none;
    text-decoration: none;
}

.zb-btn:active { transform: scale(0.96); }
.zb-btn:disabled { opacity: 0.5; pointer-events: none; }

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

.zb-btn-secondary {
    background: var(--zb-bg-warm);
    color: var(--zb-ink);
}

.zb-btn-outline {
    background: transparent;
    color: var(--zb-primary);
    border: 1.5px solid var(--zb-primary);
}

.zb-btn-sm {
    padding: 8px 16px;
    font-size: 0.82rem;
}

.zb-btn-full { width: 100%; }

/* ── Forms ─────────────────────────────────────────────────── */
.zb-field {
    margin-bottom: 16px;
}

.zb-field label {
    display: block;
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--zb-ink-light);
    margin-bottom: 6px;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.zb-field input,
.zb-field select,
.zb-field textarea {
    width: 100%;
    padding: 12px 14px;
    border: 1.5px solid var(--zb-border);
    border-radius: var(--zb-radius-sm);
    font-family: var(--zb-font-body);
    font-size: 1rem;
    color: var(--zb-ink);
    background: var(--zb-bg-card);
    outline: none;
    transition: border-color 0.2s;
}

.zb-field input:focus,
.zb-field select:focus,
.zb-field textarea:focus {
    border-color: var(--zb-primary);
}

.zb-field textarea { resize: vertical; min-height: 80px; }

.zb-field-devanagari input,
.zb-field-devanagari textarea {
    font-family: var(--zb-font-deva);
    font-size: 1.1rem;
}

.zb-field-urdu input,
.zb-field-urdu textarea {
    font-family: var(--zb-font-urdu);
    direction: rtl;
    text-align: right;
    font-size: 1.15rem;
    line-height: 2;
}

/* ── IPA Keyboard ──────────────────────────────────────────── */
.zb-ipa-keyboard {
    background: var(--zb-bg-warm);
    border-radius: var(--zb-radius);
    padding: 10px;
    margin-top: 8px;
    display: none;
}

.zb-ipa-keyboard.open { display: block; }

.zb-ipa-keyboard .zb-ipa-row {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
    margin-bottom: 6px;
}

.zb-ipa-key {
    min-width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--zb-bg-card);
    border: 1px solid var(--zb-border);
    border-radius: 6px;
    font-family: var(--zb-font-mono);
    font-size: 1rem;
    cursor: pointer;
    transition: background 0.1s;
    padding: 0 8px;
}

.zb-ipa-key:active {
    background: var(--zb-primary-soft);
}

/* ── Auth Sheet (Bottom Overlay) ───────────────────────────── */
.zb-overlay {
    position: fixed;
    inset: 0;
    background: rgba(44,36,24,0.4);
    z-index: 500;
    display: flex;
    align-items: flex-end;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.25s;
}

.zb-overlay.show {
    opacity: 1;
    pointer-events: auto;
}

.zb-sheet {
    background: var(--zb-bg-card);
    border-radius: 20px 20px 0 0;
    width: 100%;
    max-width: 600px;
    margin: 0 auto;
    padding: 24px 20px calc(24px + var(--zb-safe-bottom));
    transform: translateY(100%);
    transition: transform 0.3s cubic-bezier(0.32, 0.72, 0, 1);
}

.zb-overlay.show .zb-sheet {
    transform: translateY(0);
}

.zb-sheet-handle {
    width: 36px;
    height: 4px;
    background: var(--zb-border);
    border-radius: 2px;
    margin: 0 auto 16px;
}

/* ── Page Container ────────────────────────────────────────── */
.zb-page {
    max-width: 600px;
    margin: 0 auto;
    padding: 0 16px;
}

/* ── Section Headers ───────────────────────────────────────── */
.zb-section-title {
    font-family: var(--zb-font-display);
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--zb-ink);
    margin: 24px 0 12px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.zb-section-title .count {
    font-family: var(--zb-font-body);
    font-size: 0.8rem;
    color: var(--zb-ink-muted);
    font-weight: 400;
}

/* ── Category Pills ────────────────────────────────────────── */
.zb-pills {
    display: flex;
    gap: 8px;
    overflow-x: auto;
    padding: 4px 0;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
}

.zb-pills::-webkit-scrollbar { display: none; }

.zb-pill {
    flex-shrink: 0;
    padding: 8px 16px;
    border-radius: var(--zb-radius-pill);
    font-size: 0.85rem;
    font-weight: 500;
    background: var(--zb-bg-card);
    border: 1.5px solid var(--zb-border);
    color: var(--zb-ink-light);
    text-decoration: none;
    white-space: nowrap;
    transition: all 0.15s;
    cursor: pointer;
}

.zb-pill.active, .zb-pill:active {
    background: var(--zb-primary);
    border-color: var(--zb-primary);
    color: #fff;
}

/* ── Alphabet Scroll ───────────────────────────────────────── */
.zb-alpha-bar {
    display: flex;
    gap: 2px;
    overflow-x: auto;
    padding: 8px 0;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
}

.zb-alpha-bar::-webkit-scrollbar { display: none; }

.zb-alpha-letter {
    flex-shrink: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--zb-ink-light);
    cursor: pointer;
    transition: all 0.15s;
}

.zb-alpha-letter.active {
    background: var(--zb-primary);
    color: #fff;
}

/* ── Audio Play Button ─────────────────────────────────────── */
.zb-audio-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--zb-primary-soft);
    border: none;
    cursor: pointer;
    color: var(--zb-primary);
    transition: background 0.15s;
}

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

/* ── Loading Skeleton ──────────────────────────────────────── */
.zb-skeleton {
    background: linear-gradient(90deg, var(--zb-bg-warm) 25%, var(--zb-border-light) 50%, var(--zb-bg-warm) 75%);
    background-size: 200% 100%;
    animation: zb-shimmer 1.5s ease-in-out infinite;
    border-radius: var(--zb-radius-sm);
}

@keyframes zb-shimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* ── Toast ─────────────────────────────────────────────────── */
.zb-toast {
    position: fixed;
    bottom: calc(var(--zb-nav-height) + var(--zb-safe-bottom) + 16px);
    left: 50%;
    transform: translateX(-50%) translateY(20px);
    padding: 12px 24px;
    border-radius: var(--zb-radius);
    font-size: 0.88rem;
    font-weight: 500;
    z-index: 600;
    opacity: 0;
    transition: opacity 0.3s, transform 0.3s;
    pointer-events: none;
    max-width: 90vw;
    text-align: center;
}

.zb-toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
.zb-toast-info { background: var(--zb-ink); color: #fff; }
.zb-toast-success { background: var(--zb-verified); color: #fff; }
.zb-toast-error { background: var(--zb-unverified); color: #fff; }

/* ── Empty State ───────────────────────────────────────────── */
.zb-empty {
    text-align: center;
    padding: 48px 24px;
    color: var(--zb-ink-muted);
}

.zb-empty svg {
    width: 48px;
    height: 48px;
    margin-bottom: 12px;
    opacity: 0.4;
}

.zb-empty p {
    font-size: 0.95rem;
    margin-top: 8px;
}

/* ── Divider ───────────────────────────────────────────────── */
.zb-divider {
    height: 1px;
    background: var(--zb-border-light);
    margin: 16px 0;
}

/* ── Animations ────────────────────────────────────────────── */
@keyframes zb-fadein {
    from { opacity: 0; transform: translateY(8px); }
    to   { opacity: 1; transform: translateY(0); }
}

.zb-animate-in {
    animation: zb-fadein 0.35s ease-out forwards;
}

/* Staggered children */
.zb-stagger > *:nth-child(1) { animation-delay: 0.03s; }
.zb-stagger > *:nth-child(2) { animation-delay: 0.06s; }
.zb-stagger > *:nth-child(3) { animation-delay: 0.09s; }
.zb-stagger > *:nth-child(4) { animation-delay: 0.12s; }
.zb-stagger > *:nth-child(5) { animation-delay: 0.15s; }

/* ── Utilities ─────────────────────────────────────────────── */
.zb-flex { display: flex; }
.zb-flex-col { flex-direction: column; }
.zb-flex-between { justify-content: space-between; }
.zb-flex-center { align-items: center; }
.zb-flex-wrap { flex-wrap: wrap; }
.zb-gap-4 { gap: 4px; }
.zb-gap-8 { gap: 8px; }
.zb-gap-12 { gap: 12px; }
.zb-mt-8 { margin-top: 8px; }
.zb-mt-16 { margin-top: 16px; }
.zb-mt-24 { margin-top: 24px; }
.zb-mb-12 { margin-bottom: 12px; }
.zb-text-center { text-align: center; }
.zb-text-sm { font-size: 0.85rem; }
.zb-text-muted { color: var(--zb-ink-muted); }
.zb-hidden { display: none !important; }