/* ═══════════════════════════════════════════════
   Open Granth: Sacred Modernism

   Typography: Plus Jakarta Sans (UI / English)
               Noto Sans Gurmukhi (sacred text)
   ═══════════════════════════════════════════════ */

/* ── Light Theme ── */
:root {
    --bg:            #FAFAF8;
    --bg-surface:    #F0EEEA;
    --bg-nav:        rgba(250, 250, 248, 0.88);
    --text:          #1B1B1A;
    --text-secondary:#5F5E5B;
    --text-tertiary: #96948F;
    --accent:        #B8860B;
    --accent-hover:  #9A7009;
    --accent-soft:   rgba(184, 134, 11, 0.06);
    --border:        #E3E0DA;
    --border-light:  #ECEAE4;
    --gurmukhi-color:#1B1B1A;
    --verse-hover:   rgba(184, 134, 11, 0.025);
    --shadow-nav:    0 1px 0 var(--border);
    --radius:        8px;
    --content-width: 680px;
    --page-px:       1.5rem;
}

/* ── Dark Theme ── */
[data-theme="dark"] {
    --bg:            #171615;
    --bg-surface:    #201F1D;
    --bg-nav:        rgba(23, 22, 21, 0.9);
    --text:          #EAEAE8;
    --text-secondary:#9C9A96;
    --text-tertiary: #6B6966;
    --accent:        #D4A84B;
    --accent-hover:  #E0BB6A;
    --accent-soft:   rgba(212, 168, 75, 0.08);
    --border:        #2C2A27;
    --border-light:  #242220;
    --gurmukhi-color:#F4F4F2;
    --verse-hover:   rgba(212, 168, 75, 0.03);
    --shadow-nav:    0 1px 0 var(--border);
}

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

/* ── Base ── */
html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    transition: background-color 0.3s ease, color 0.3s ease;
}

a {
    color: var(--accent);
    text-decoration: none;
    transition: color 0.15s ease;
}

a:hover { color: var(--accent-hover); }

::selection {
    background: var(--accent-soft);
    color: var(--text);
}

/* ═══════════════════════════════════════════════
   Navigation
   ═══════════════════════════════════════════════ */

nav {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--bg-nav);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: var(--shadow-nav);
    transition: background-color 0.3s ease;
}

.nav-inner {
    max-width: 900px;
    margin: 0 auto;
    padding: 0.625rem var(--page-px);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.nav-links {
    flex: 1;
}

.nav-right {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 0.5rem;
}

.nav-link {
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--text-secondary);
    text-decoration: none;
    white-space: nowrap;
    transition: color 0.15s ease;
}

.nav-link:hover { color: var(--text); }

.nav-links {
    display: flex;
    gap: 0.75rem;
}

/* Center cluster: nav-home and nav-ang-context live inside here so they
   behave as a single composed unit, not two siblings being pulled apart by
   the flex:1 on .nav-links and .nav-right. */
.nav-center {
    flex: 0 1 auto;
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 0;
    gap: 0.5rem;
}

.nav-home {
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--text);
    text-decoration: none;
    letter-spacing: -0.01em;
    white-space: nowrap;
    flex-shrink: 0;
    /* Grid with a single cell: both faces (English label and symbol) occupy
       grid-area 1/1 and are crossfaded via opacity. The container sizes
       itself to the wider face, so swapping doesn't jump layout. place-items
       centers both faces so the smaller glyph sits mid-box, not top-left. */
    display: inline-grid;
    place-items: center;
    line-height: 1;
}

.nav-home:hover { color: var(--accent); }

.nav-home-face {
    grid-area: 1 / 1;
    line-height: 1;
    transition: opacity 0.25s ease;
    pointer-events: none;
}

.nav-home-symbol {
    opacity: 0;
    font-size: 1.25rem;
    font-weight: 700;
}

nav.nav-has-ang-context .nav-home-label { opacity: 0; }
nav.nav-has-ang-context .nav-home-symbol { opacity: 1; }

/* ── Ang-page sticky-nav context morph ──
   When the page's main ang-header scrolls out of view, the nav-home label is
   replaced by a compact ang context ("Ang N · Author · Raag"). Driven by an
   IntersectionObserver on .ang-header that toggles .nav-has-ang-context on
   <nav>. Transition is max-width + opacity on both elements, so the swap
   flows smoothly without a layout jump. */
.nav-ang-context {
    font-family: inherit;
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 0;
    min-width: 0;
    opacity: 0;
    flex-shrink: 1;
    pointer-events: none;
    /* Close: fade content out first (0.15s), then collapse container (0.2s).
       Open: expand container first (0.2s), then fade content in (0.15s) at delay.
       Staggering prevents the reveal-wipe "snap" from content being clipped
       while the container is still growing. */
    transition: max-width 0.2s ease, opacity 0.15s ease, color 0.15s ease;
    /* Button reset */
    background: none;
    border: none;
    padding: 0;
    margin: 0;
    cursor: pointer;
    text-align: left;
}

.nav-ang-context:hover { color: var(--text); }

.nav-ang-context .nav-ctx-sep {
    color: var(--text-tertiary);
    margin: 0 0.4rem;
}


nav.nav-has-ang-context .nav-ang-context {
    max-width: 560px;
    opacity: 1;
    pointer-events: auto;
    /* Open: container expands first (0.2s), then content fades in (0.2s delayed
       by 0.15s). Close inherits the base transition: content fades first, then
       container collapses. */
    transition: max-width 0.2s ease, opacity 0.2s ease 0.15s, color 0.15s ease;
}

@media (max-width: 640px) {
    nav.nav-has-ang-context .nav-ang-context { max-width: 360px; }
}

/* Theme Toggle */
.theme-toggle {
    background: none;
    border: 1px solid var(--border);
    border-radius: 6px;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: border-color 0.15s ease;
    flex-shrink: 0;
}

.theme-toggle:hover { border-color: var(--text-tertiary); }

.theme-toggle svg {
    width: 14px;
    height: 14px;
    fill: none;
    stroke: var(--text-tertiary);
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.theme-toggle .icon-moon { display: none; }
[data-theme="dark"] .theme-toggle .icon-sun { display: none; }
[data-theme="dark"] .theme-toggle .icon-moon { display: block; }

/* Ang Search */
.nav-right input[type="number"] {
    width: 56px;
    padding: 0.25rem 0.5rem;
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 0.8125rem;
    font-weight: 500;
    background: transparent;
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text);
    text-align: center;
    transition: border-color 0.15s ease;
    -moz-appearance: textfield;
}

.nav-right input[type="number"]::-webkit-inner-spin-button,
.nav-right input[type="number"]::-webkit-outer-spin-button { -webkit-appearance: none; margin: 0; }

.nav-right input[type="number"]:focus { outline: none; border-color: var(--accent); }
.nav-right input[type="number"]::placeholder { color: var(--text-tertiary); font-weight: 400; }

/* ═══════════════════════════════════════════════
   Main Content
   ═══════════════════════════════════════════════ */

main {
    max-width: var(--content-width);
    margin: 0 auto;
    padding: 0 var(--page-px);
    width: 100%;
    flex: 1;
    animation: fadeIn 0.3s ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(4px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* ═══════════════════════════════════════════════
   Home Page
   ═══════════════════════════════════════════════ */

.home { padding-top: 4rem; padding-bottom: 3rem; }

.home-header {
    text-align: center;
    margin-bottom: 3rem;
}

.home-ek-onkar {
    font-family: 'Noto Sans Gurmukhi', sans-serif;
    font-size: 2.75rem;
    font-weight: 600;
    color: var(--accent);
    line-height: 1;
    margin-bottom: 1.25rem;
}

.home-header h1 {
    font-size: 1.75rem;
    font-weight: 700;
    letter-spacing: -0.03em;
    color: var(--text);
    margin-bottom: 0.25rem;
}

.home-subtitle {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    font-weight: 400;
    margin-bottom: 1rem;
}

.home-desc {
    font-size: 0.875rem;
    color: var(--text-tertiary);
    line-height: 1.65;
    max-width: 400px;
    margin: 0 auto;
}

.home-verify-cta {
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    gap: 0.125rem;
    margin-top: 1.75rem;
    padding: 0.75rem 1.5rem;
    background: var(--accent-soft);
    border: 1px solid transparent;
    border-radius: var(--radius);
    text-decoration: none;
    transition: border-color 0.15s ease, background 0.15s ease;
}
.home-verify-cta:hover {
    border-color: var(--accent);
    background: var(--bg-surface);
}
.home-verify-cta-text {
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--accent);
}
.home-verify-cta-text::after {
    content: " \2192";
}
.home-verify-cta-sub {
    font-size: 0.75rem;
    color: var(--text-tertiary);
}

.search-hint,
.verify-hint a,
.search-hint a {
    color: var(--text-tertiary);
}
.search-hint {
    font-size: 0.75rem;
    line-height: 1.5;
    margin-top: -0.5rem;
    margin-bottom: 1.5rem;
}
.search-hint a,
.verify-hint a {
    color: var(--accent);
    text-decoration: underline;
    text-underline-offset: 2px;
}
.search-hint a:hover,
.verify-hint a:hover { color: var(--accent-hover); }


/* ── Section Label ── */
.section-note {
    font-size: 0.8125rem;
    color: var(--text-tertiary);
    margin: -0.375rem 0 0.875rem;
}

.section-note a { color: var(--text-tertiary); text-decoration: underline; }

.section-label {
    font-size: 0.6875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-tertiary);
    margin-bottom: 0.875rem;
    padding-bottom: 0.625rem;
    border-bottom: 1px solid var(--border);
}

/* ── Bani Cards ── */
.banis {
    margin-bottom: 2.5rem;
}

.bani-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.5rem;
}

.bani-card {
    display: block;
    padding: 0.875rem 1rem;
    background: var(--bg-surface);
    border: 1px solid transparent;
    border-radius: var(--radius);
    text-decoration: none;
    transition: all 0.15s ease;
}

.bani-card:hover {
    border-color: var(--border);
    background: var(--accent-soft);
}

.bani-card:hover .bani-name { color: var(--accent); }

.bani-name {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text);
    display: block;
    margin-bottom: 0.125rem;
    transition: color 0.15s ease;
}

.bani-ang {
    font-size: 0.6875rem;
    color: var(--text-tertiary);
    font-weight: 500;
}

/* ── Raag Sections ── */
.sections { margin-bottom: 3rem; }

.section-list {
    list-style: none;
}

.section-list li {
    border-bottom: 1px solid var(--border-light);
}

.section-list li:last-child { border-bottom: none; }

.section-list li a {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem 0;
    color: var(--text);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    transition: color 0.15s ease;
}

.section-list li a:hover { color: var(--accent); }

.section-range {
    font-size: 0.75rem;
    font-weight: 400;
    color: var(--text-tertiary);
    white-space: nowrap;
    font-variant-numeric: tabular-nums;
}

/* ═══════════════════════════════════════════════
   Ang Page
   ═══════════════════════════════════════════════ */

.ang-header {
    text-align: center;
    padding: 2.5rem 0 1.75rem;
    margin-bottom: 0;
    border-bottom: 1px solid var(--border);
}

.ang-header h1 {
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--text);
    margin-bottom: 0.25rem;
}

.ang-meta {
    font-size: 0.8125rem;
    font-weight: 400;
    color: var(--text-tertiary);
}


/* ── Verses ── */
.bani {
    display: flex;
    flex-direction: column;
}

.verse {
    position: relative;
    padding: 1.75rem 0;
    border-bottom: 1px solid var(--border-light);
    transition: background-color 0.15s ease;
}

.verse:last-child { border-bottom: none; }

.verse:hover { background: var(--verse-hover); cursor: pointer; }

/* ── Verse Link Icon ── */
.verse-link {
    position: absolute;
    top: 1.75rem;
    right: 0;
    background: none;
    border: none;
    padding: 0.375rem;
    cursor: pointer;
    opacity: 0;
    transition: opacity 0.15s ease, color 0.15s ease;
}

.verse:hover .verse-link { opacity: 0.4; }
.verse-link:hover { opacity: 1 !important; }

.verse-link svg {
    width: 15px;
    height: 15px;
    fill: none;
    stroke: var(--text-tertiary);
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.verse-link:hover svg { stroke: var(--accent); }

.verse:target {
    background: var(--accent-soft);
    border-radius: var(--radius);
    margin: 0 -0.75rem;
    padding-left: 0.75rem;
    padding-right: 0.75rem;
    scroll-margin-top: 4rem;
}

/* ── Toast ── */
.toast {
    position: fixed;
    top: 3.5rem;
    left: 50%;
    transform: translateX(-50%) translateY(-0.5rem);
    background: var(--text);
    color: var(--bg);
    font-size: 0.8125rem;
    font-weight: 600;
    padding: 0.5rem 1.25rem;
    border-radius: 100px;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s ease, transform 0.2s ease;
    z-index: 200;
}

.toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

.gurmukhi {
    font-family: 'Noto Sans Gurmukhi', sans-serif;
    font-size: 1.5rem;
    font-weight: 600;
    line-height: 1.8;
    color: var(--gurmukhi-color);
    margin-bottom: 0.5rem;
}

.translit {
    font-size: 0.8125rem;
    font-weight: 400;
    color: var(--text-tertiary);
    font-style: italic;
    margin-bottom: 0.25rem;
    line-height: 1.5;
}

.english {
    font-size: 0.9375rem;
    font-weight: 400;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ═══════════════════════════════════════════════
   Footer
   ═══════════════════════════════════════════════ */

footer {
    max-width: var(--content-width);
    margin: 0 auto;
    width: 100%;
    text-align: center;
    padding: 2.5rem var(--page-px) 2rem;
    border-top: 1px solid var(--border);
}

.closing {
    font-family: 'Noto Sans Gurmukhi', sans-serif;
    font-size: 0.9375rem;
    color: var(--accent);
    margin-bottom: 0.375rem;
}

.attribution {
    font-size: 0.6875rem;
    font-weight: 500;
    color: var(--text-tertiary);
    letter-spacing: 0.02em;
}

.attribution a {
    color: var(--text-tertiary);
    text-decoration: underline;
    text-decoration-color: var(--border);
    text-underline-offset: 2px;
    transition: color 0.15s ease, text-decoration-color 0.15s ease;
}

.attribution a:hover {
    color: var(--accent);
    text-decoration-color: var(--accent);
}

/* ═══════════════════════════════════════════════
   Bottom Page-Turns
   ═══════════════════════════════════════════════ */

.page-turns {
    /* The global `nav` rule is sticky for the top bar; this bottom nav
       must opt out or it glues to the viewport top when scrolled past. */
    position: static;
    background: none;
    display: flex;
    justify-content: center;
    align-items: stretch;
    gap: 1rem;
    max-width: var(--content-width);
    margin: 0 auto;
    padding: 2rem var(--page-px) 1rem;
    border-top: 1px solid var(--border-light);
}

/* The global `nav` rule is sticky for the top bar; this bottom nav must
   opt out or it glues itself to the viewport top when scrolled past. */
/* Same visual language as .bani-card: quiet surface, border on hover,
   gold reserved for the text. Compact: a continuation, not a card. */
.page-turn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    padding: 0.625rem 1.5rem;
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--text);
    background: var(--bg-surface);
    border: 1px solid transparent;
    border-radius: var(--radius);
    text-decoration: none;
    transition: all 0.15s ease;
    white-space: nowrap;
}

.page-turn:hover {
    border-color: var(--border);
    background: var(--accent-soft);
    color: var(--accent);
}

.page-turn-placeholder {
    flex: 1;
    min-width: 100px;
}

.back-to-top {
    position: fixed;
    right: 1.25rem;
    bottom: 1.25rem;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: 50%;
    cursor: pointer;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.25s ease;
    z-index: 40;
}

.back-to-top.show {
    opacity: 1;
    pointer-events: auto;
}

.back-to-top svg {
    width: 18px;
    height: 18px;
    fill: none;
    stroke: var(--accent);
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.back-to-top:hover {
    border-color: var(--accent);
}

/* ═══════════════════════════════════════════════
   Search Page
   ═══════════════════════════════════════════════ */

.search-page { padding-top: 2.5rem; padding-bottom: 3rem; }

.search-header {
    text-align: center;
    margin-bottom: 1.5rem;
}

.search-header h1 {
    font-size: 1.375rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 0.25rem;
}

.search-subtitle {
    font-size: 0.875rem;
    color: var(--text-tertiary);
}

.search-box {
    margin-bottom: 1.5rem;
}

.search-box input {
    width: 100%;
    padding: 0.75rem 1rem;
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 1rem;
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text);
    transition: border-color 0.15s ease;
}

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

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

.search-box input:disabled {
    opacity: 0.5;
    cursor: wait;
}

.search-status {
    font-size: 0.8125rem;
    color: var(--text-tertiary);
    margin-bottom: 0.5rem;
}

.search-results {
    display: flex;
    flex-direction: column;
}

.search-result {
    display: block;
    padding: 1.25rem 0;
    border-bottom: 1px solid var(--border-light);
    text-decoration: none;
    color: var(--text);
    transition: background-color 0.15s ease;
}

.search-result:last-child { border-bottom: none; }

.search-result:hover { background: var(--verse-hover); }

.search-result .gurmukhi {
    font-size: 1.25rem;
    line-height: 1.6;
    margin-bottom: 0.375rem;
}

.search-result .translit {
    margin-bottom: 0.125rem;
}

.search-result mark {
    background: var(--accent-soft);
    color: var(--text);
    padding: 0.0625rem 0.125rem;
    border-radius: 2px;
}

.result-meta {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--accent);
    margin-top: 0.375rem;
}

.search-empty {
    text-align: center;
    color: var(--text-tertiary);
    font-size: 0.9375rem;
    padding: 2rem 0;
}

/* ═══════════════════════════════════════════════
   About Page
   ═══════════════════════════════════════════════ */

.about-page { padding: 2.5rem 0 3rem; }

.about-header {
    text-align: center;
    margin-bottom: 2.5rem;
    padding-bottom: 1.75rem;
    border-bottom: 1px solid var(--border);
}

.about-header h1 {
    font-size: 1.375rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.about-content section { margin-bottom: 2rem; }

.about-content h2 {
    font-size: 0.6875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-tertiary);
    margin-bottom: 0.625rem;
}

.about-content p {
    font-size: 0.9375rem;
    line-height: 1.7;
    color: var(--text-secondary);
    margin-bottom: 0.625rem;
}

.about-content p:last-child { margin-bottom: 0; }

.about-content strong { color: var(--text); font-weight: 600; }
.about-content em { color: var(--text); }

.about-content a {
    text-decoration: underline;
    text-decoration-color: var(--border);
    text-underline-offset: 2px;
}

.about-content a:hover { text-decoration-color: var(--accent); }


/* ═══════════════════════════════════════════════
   Responsive
   ═══════════════════════════════════════════════ */

@media (max-width: 640px) {
    :root { --page-px: 1.25rem; }

    .home { padding-top: 3rem; }
    .home-header h1 { font-size: 1.5rem; }
    .home-ek-onkar { font-size: 2.25rem; }
    .bani-grid { grid-template-columns: 1fr; }

    .nav-inner { padding: 0.5rem var(--page-px); }
    .nav-link { font-size: 0.75rem; }

    .gurmukhi { font-size: 1.25rem; }
    .verse { padding: 1.5rem 0; }

    .section-list li a { font-size: 0.8125rem; }
    .section-range { font-size: 0.6875rem; }

    .ang-header { padding: 2rem 0 1.5rem; }
}

@media (max-width: 480px) {
    /* Keep About/Search/Verify reachable; shrink rather than hide. */
    .nav-links { gap: 0.375rem; }
    .nav-link { font-size: 0.6875rem; }
    /* Raise gap between prev/next arrows and .nav-right items. */
    .nav-right { gap: 0.75rem; }
    /* Give prev/next arrows a real tap target. */
    .nav-prev, .nav-next {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        min-width: 44px;
        min-height: 44px;
        padding: 0.25rem 0.5rem;
    }
    /* On ang pages the arrows + input + toggle overrun 401-433px phones;
       the input yields to the arrows. Other pages keep the input. */
    .nav-right:has(.nav-prev) input[type="number"] { display: none; }
    /* Sticky ang context: drop the raag on small screens and truncate. */
    .nav-ang-context { max-width: 60vw; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
    .nav-ang-context span:nth-of-type(n+4) { display: none; }
}

@media (max-width: 400px) {
    .nav-right input[type="number"] { display: none; }
    .gurmukhi { font-size: 1.125rem; line-height: 1.7; }
    .nav-link { font-size: 0.6875rem; }
}

/* ═══════════════════════════════════════════════
   Print
   ═══════════════════════════════════════════════ */

@media print {
    nav, .theme-toggle { display: none; }
    body { background: white; color: black; }
    .gurmukhi { color: black; }
    .translit { color: #666; }
    .english { color: #333; }
    .verse { break-inside: avoid; }
}