/* =========================================================
   SRIVIDYALAYAM — Learn page animations
   Learn page (learn.html): melakarta wheel + tala keeper
   ========================================================= */


/* =========================================================
   MELAKARTA SECTION
   ========================================================= */

#melakarta {
    position: relative;
    background:
        radial-gradient(ellipse at 28% 55%, #3a0014 0%, rgba(26, 0, 8, 0) 60%),
        var(--crimson-deep);
    padding: 6rem 2rem;
    overflow: hidden;
    color: var(--gold-pale);
}

#melakarta .section-inner {
    max-width: 1200px;
}

#melakarta .section-badge {
    color: var(--gold);
}

#melakarta .section-title {
    color: var(--cream);
}

#melakarta .section-title em {
    color: var(--gold-light);
}

.mela-intro {
    max-width: 680px;
    font-size: 0.97rem;
    line-height: 1.85;
    color: rgba(245, 233, 200, 0.7);
    margin-bottom: 3rem;
}

.mela-layout {
    display: grid;
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
    gap: clamp(2rem, 4vw, 4rem);
    align-items: center;
}


/* ---------- Buttons ---------- */

.mela-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;

    background: transparent;
    color: rgba(201, 168, 76, 0.95);
    border: 1px solid rgba(201, 168, 76, 0.6);

    padding: 0.6rem 1.3rem;

    font-family: 'Raleway', sans-serif;
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    text-transform: uppercase;

    cursor: pointer;
    transition: border-color 0.3s ease, color 0.3s ease, background 0.3s ease, transform 0.3s ease;
}

.mela-btn i {
    font-size: 1rem;
}

.mela-btn:hover {
    border-color: var(--gold-light);
    color: var(--gold-light);
    transform: translateY(-2px);
}

.mela-btn:focus-visible {
    outline: 2px solid var(--gold-light);
    outline-offset: 3px;
}

/* ---------- Wheel ---------- */

.mela-wheel {
    width: 100%;
    max-width: 580px;
    margin: 0 auto;
}

.mela-svg {
    display: block;
    width: 100%;
    height: auto;
    overflow: visible;
    user-select: none;
    -webkit-user-select: none;
}

.mela-rim {
    fill: none;
    stroke: rgba(201, 168, 76, 0.35);
    stroke-width: 1;
}

.mela-seg path {
    fill: rgba(201, 168, 76, 0.04);
    stroke: rgba(201, 168, 76, 0.28);
    stroke-width: 0.6;
    cursor: pointer;
    transition: fill 0.35s ease;
}

.mela-seg:nth-child(even) path {
    fill: rgba(201, 168, 76, 0.08);
}

.mela-seg:hover path {
    fill: rgba(201, 168, 76, 0.22);
}

.mela-seg-label {
    font-family: 'Cormorant Garamond', serif;
    font-size: 9.5px;
    font-weight: 600;
    fill: rgba(245, 233, 200, 0.78);
    pointer-events: none;
    transition: fill 0.35s ease;
}

.mela-seg-label.compact {
    font-family: 'Raleway', sans-serif;
    font-size: 11px;
    font-weight: 600;
}

.mela-seg.is-today .mela-seg-label {
    fill: var(--gold-light);
}

.mela-seg.is-active path {
    fill: var(--gold);
    stroke: var(--gold-light);
}

.mela-seg.is-active .mela-seg-label {
    fill: var(--crimson-deep);
    font-weight: 700;
}

.mela-chakra-seg path {
    fill: rgba(107, 0, 32, 0.55);
    stroke: rgba(201, 168, 76, 0.35);
    stroke-width: 0.8;
    transition: fill 0.4s ease;
}

.mela-chakra-seg.alt path {
    fill: rgba(133, 0, 42, 0.45);
}

.mela-chakra-seg.is-active path {
    fill: rgba(201, 168, 76, 0.28);
}

.mela-chakra-label {
    font-family: 'Raleway', sans-serif;
    font-size: 9.5px;
    font-weight: 700;
    letter-spacing: 0.2em;
    fill: rgba(226, 194, 114, 0.85);
    pointer-events: none;
}

.mela-divider {
    stroke: var(--gold);
    stroke-width: 1.6;
}

.mela-today-mark circle {
    fill: var(--gold-light);
    stroke: var(--crimson-deep);
    stroke-width: 1.5;
}

.mela-pointer {
    fill: var(--gold-light);
    filter: drop-shadow(0 0 6px rgba(226, 194, 114, 0.6));
}

.mela-core-disc {
    stroke: rgba(201, 168, 76, 0.55);
    stroke-width: 1.2;
}

.mela-core-guide {
    fill: none;
    stroke: rgba(201, 168, 76, 0.18);
    stroke-width: 1;
    stroke-dasharray: 2 4;
}

.mela-shape {
    fill: rgba(201, 168, 76, 0.13);
    stroke: rgba(226, 194, 114, 0.75);
    stroke-width: 1.3;
    stroke-linejoin: round;
}

.mela-note {
    fill: rgba(201, 168, 76, 0.22);
    transition: r 0.3s ease, fill 0.3s ease;
}

.mela-note.on {
    fill: var(--gold);
    r: 5.5px;
}

.mela-note.sounding {
    fill: var(--gold-pale);
    r: 8px;
    filter: drop-shadow(0 0 6px rgba(245, 233, 200, 0.9));
}

.mela-note-label {
    font-family: 'Raleway', sans-serif;
    font-size: 8.5px;
    font-weight: 600;
    fill: rgba(245, 233, 200, 0.3);
    transition: fill 0.3s ease;
}

.mela-note-label.on {
    fill: rgba(245, 233, 200, 0.9);
}

.mela-core-num {
    font-family: 'Cormorant Garamond', serif;
    font-size: 44px;
    font-weight: 600;
    fill: var(--gold-light);
}

.mela-core-sub {
    font-family: 'Raleway', sans-serif;
    font-size: 8.5px;
    font-weight: 700;
    letter-spacing: 0.25em;
    fill: rgba(245, 233, 200, 0.6);
}


/* ---------- Panel ---------- */

.mela-panel {
    position: relative;
    padding: 2.4rem 2.2rem;
    border: 1px solid rgba(201, 168, 76, 0.35);
    background: linear-gradient(135deg, rgba(107, 0, 32, 0.35), rgba(26, 0, 8, 0.2));
}

.mela-panel::before {
    content: "";
    position: absolute;
    inset: 10px;
    border: 1px solid rgba(201, 168, 76, 0.15);
    pointer-events: none;
}

.mela-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.3rem 1rem;
    font-size: 0.68rem;
    font-weight: 700;
    letter-spacing: 0.2em;
    text-transform: uppercase;
}

.mela-num {
    color: var(--gold);
}

.mela-chakra {
    color: rgba(245, 233, 200, 0.55);
}

.mela-name {
    font-family: 'Cormorant Garamond', serif;
    font-size: clamp(1.8rem, 3.2vw, 2.6rem);
    font-weight: 600;
    font-style: italic;
    color: var(--gold-pale);
    line-height: 1.1;
    margin: 0.5rem 0 0.4rem;
    overflow-wrap: anywhere;
}

.mela-today-tag {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    font-size: 0.66rem;
    font-weight: 700;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--crimson-deep);
    background: var(--gold-light);
    padding: 0.25rem 0.6rem;
    margin-bottom: 0.4rem;
}

.mela-today-tag[hidden] {
    display: none;
}

.mela-scale-label {
    font-size: 0.66rem;
    font-weight: 700;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: rgba(245, 233, 200, 0.5);
    margin: 1.3rem 0 0.55rem;
}

.mela-swaras {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
}

.swara-chip {
    display: inline-flex;
    align-items: baseline;
    justify-content: center;
    min-width: 2.5rem;
    height: 2.5rem;
    padding: 0 0.35rem;
    align-items: center;

    font-family: 'Cormorant Garamond', serif;
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--gold-pale);

    border: 1px solid rgba(201, 168, 76, 0.35);
    background: rgba(26, 0, 8, 0.4);

    transition: background 0.25s ease, color 0.25s ease, transform 0.25s ease, box-shadow 0.25s ease;
}

.swara-chip sub {
    font-size: 0.7rem;
    font-family: 'Raleway', sans-serif;
    font-weight: 700;
    margin-left: 1px;
    align-self: flex-end;
    margin-bottom: 0.45rem;
}

.swara-letter {
    position: relative;
}

.tara-dot {
    position: absolute;
    top: -0.12rem;
    left: 50%;
    width: 4px;
    height: 4px;
    margin-left: -2px;
    border-radius: 50%;
    background: currentColor;
}

.swara-chip.is-on {
    background: var(--gold);
    color: var(--crimson-deep);
    border-color: var(--gold-light);
    transform: translateY(-3px);
    box-shadow: 0 6px 18px rgba(201, 168, 76, 0.35);
}

.mela-notes {
    list-style: none;
    margin-top: 1.4rem;
    padding-top: 1.1rem;
    border-top: 1px solid rgba(201, 168, 76, 0.2);
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.45rem 1rem;
}

.mela-notes li {
    font-size: 0.82rem;
    color: rgba(245, 233, 200, 0.7);
    display: flex;
    align-items: baseline;
    gap: 0.5rem;
}

.note-key {
    font-family: 'Cormorant Garamond', serif;
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--gold);
    min-width: 1.6rem;
}

.note-key sub {
    font-size: 0.62rem;
}

/* Two rows by default:  [‹] [Hear the Scale] [›]  /  [Today]
   One row when the panel is wide enough (container query below). */
.mela-panel {
    container-type: inline-size;
}

.mela-controls {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr) auto;
    align-items: stretch;
    gap: 0.6rem;
    margin-top: 1.8rem;
}

.mela-controls .mela-btn {
    justify-content: center;
    white-space: nowrap;
}

.mela-prev      { grid-column: 1; grid-row: 1; }
.mela-play      { grid-column: 2; grid-row: 1; }
.mela-next      { grid-column: 3; grid-row: 1; }
.mela-today-btn { grid-column: 1 / -1; grid-row: 2; }

@container (min-width: 560px) {
    .mela-controls {
        grid-template-columns: auto minmax(0, 1fr) auto auto;
    }

    .mela-today-btn { grid-column: 3; grid-row: 1; }
    .mela-next      { grid-column: 4; grid-row: 1; }
}

.mela-btn.solid {
    background: var(--gold);
    color: var(--crimson-deep);
    border-color: var(--gold);
}

.mela-btn.solid:hover {
    background: var(--gold-light);
    color: var(--crimson-deep);
}

.mela-btn.icon-only {
    padding: 0.6rem 0.7rem;
}


/* =========================================================
   RESPONSIVE
   ========================================================= */

@media (max-width: 900px) {
    .mela-layout {
        grid-template-columns: minmax(0, 1fr);
    }

    .mela-wheel {
        max-width: 520px;
    }
}

@media (max-width: 768px) {
    #melakarta {
        padding: 4rem 1.5rem;
    }

    .mela-intro {
        margin-bottom: 2rem;
    }

    .mela-panel {
        padding: 1.8rem 1.4rem;
    }

    /* mobile.css shrinks every h3 to 1.1rem; keep the raga name prominent */
    #melakarta h3.mela-name {
        font-size: 1.75rem !important;
    }
}

@media (max-width: 480px) {
    /* keep all 8 swaras on one line */
    .mela-swaras {
        display: grid;
        grid-template-columns: repeat(8, minmax(0, 1fr));
        gap: 0.25rem;
    }

    .swara-chip {
        min-width: 0;
        height: 2.2rem;
        padding: 0;
        font-size: 1.05rem;
    }

    .swara-chip sub {
        font-size: 0.6rem;
        margin-bottom: 0.35rem;
    }

    #melakarta h3.mela-name {
        font-size: 1.5rem !important;
    }

    .mela-notes {
        grid-template-columns: minmax(0, 1fr);
    }
}

@media (prefers-reduced-motion: reduce) {
    .swara-chip,
    .mela-note,
    .mela-seg path,
    .mela-btn {
        transition: none;
    }
}


/* =========================================================
   TALA KEEPER (white section, top of learn.html)
   ========================================================= */

#tala {
    position: relative;
    background: white;
    padding: 6rem 2rem;
    overflow: hidden;
}

#tala .section-inner {
    max-width: 1200px;
}

.tala-intro {
    max-width: 720px;
    font-size: 0.97rem;
    line-height: 1.85;
    color: var(--muted);
    margin-bottom: 3rem;
}

.tala-intro strong {
    color: var(--text);
}

.tala-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: clamp(2rem, 4vw, 4rem);
    align-items: center;
}


/* ---------- Circle ---------- */

.tala-circle {
    width: 100%;
    max-width: 500px;
    margin: 0 auto;
}

.tala-svg {
    display: block;
    width: 100%;
    height: auto;
    overflow: visible;
}

.tala-track {
    fill: none;
    stroke: rgba(107, 0, 32, 0.12);
    stroke-width: 2;
}

.tala-progress {
    fill: none;
    stroke: var(--gold);
    stroke-width: 4;
    stroke-linecap: round;
}

.tala-marker {
    fill: var(--gold);
    stroke: white;
    stroke-width: 2.5;
    filter: drop-shadow(0 0 6px rgba(201, 168, 76, 0.8));
}

.tala-anga-arc {
    fill: none;
    stroke-width: 6;
    stroke-linecap: round;
}

.tala-anga-arc.anga-I {
    stroke: var(--crimson);
}

.tala-anga-arc.anga-O {
    stroke: var(--gold);
}

.tala-anga-arc.anga-U {
    stroke: #8B5A00;
}

.tala-anga-label {
    font-family: 'Cormorant Garamond', serif;
    font-size: 17px;
    font-weight: 700;
    fill: var(--crimson);
}

.tala-anga-sub {
    font-size: 11px;
}

.tala-node circle {
    fill: white;
    stroke: var(--crimson);
    stroke-width: 1.6;
    transition: fill 0.2s ease;
}

.tala-node.kind-clap circle {
    fill: var(--crimson);
}

.tala-node.kind-turn circle {
    fill: var(--gold-pale);
    stroke: var(--gold);
}

.tala-node-num {
    font-family: 'Raleway', sans-serif;
    font-size: 11px;
    font-weight: 700;
    fill: var(--crimson);
    pointer-events: none;
}

.tala-node.kind-clap .tala-node-num {
    fill: var(--gold-pale);
}

.tala-node.kind-turn .tala-node-num {
    fill: #8B5A00;
}

.tala-node > * {
    transform-box: fill-box;
    transform-origin: center;
    transition: transform 0.18s ease;
}

.tala-node.is-active > * {
    transform: scale(1.35);
}

.tala-node.is-active circle {
    stroke: var(--gold);
    stroke-width: 3;
}


/* ---------- Hand ---------- */

.hand-part {
    fill: var(--cream);
    stroke: rgba(107, 0, 32, 0.45);
    stroke-width: 1.5;
    transition: fill 0.15s ease;
}

.hand-part.lit {
    fill: var(--crimson);
    stroke: var(--crimson);
}

.tala-hand-inner {
    transform-box: fill-box;
    transform-origin: 50% 70%;
}

.tala-hand-inner.clap .hand-part {
    animation: tala-clap-fill 0.45s ease-out;
}

.tala-ripple {
    fill: none;
    stroke: var(--gold);
    stroke-width: 2;
    opacity: 0;
    transform-box: fill-box;
    transform-origin: center;
}

.tala-hand-inner.clap .tala-ripple {
    animation: tala-ripple 0.6s ease-out;
}

.tala-hand-inner.turn {
    animation: tala-turn 0.5s ease-in-out forwards;
}

/* Back of the hand showing while it is turned */
.tala-hand-inner.turn .hand-part {
    fill: var(--gold-pale);
    stroke: rgba(139, 90, 0, 0.6);
}

@keyframes tala-clap-fill {
    0%   { fill: var(--gold); }
    100% { fill: var(--cream); }
}

@keyframes tala-ripple {
    0%   { opacity: 0.9; transform: scale(0.7); }
    100% { opacity: 0;   transform: scale(1.6); }
}

/* The hand flips over (palm turned up), like turning it on the lap */
@keyframes tala-turn {
    0%   { transform: scaleX(1); }
    50%  { transform: scaleX(0.05); }
    100% { transform: scaleX(-1); }
}

.tala-action {
    font-family: 'Cormorant Garamond', serif;
    font-size: 26px;
    font-weight: 600;
    font-style: italic;
    fill: var(--dark);
}

.tala-count {
    font-family: 'Raleway', sans-serif;
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    fill: var(--muted);
}


/* ---------- Panel ---------- */

.tala-panel {
    position: relative;
    padding: 2.2rem 2rem;
    border: 1px solid rgba(201, 168, 76, 0.45);
    background: var(--cream);
}

.tala-panel::before {
    content: "";
    position: absolute;
    inset: 10px;
    border: 1px solid rgba(201, 168, 76, 0.2);
    pointer-events: none;
}

.tala-name {
    font-family: 'Cormorant Garamond', serif;
    font-size: clamp(1.6rem, 2.8vw, 2.2rem);
    font-weight: 600;
    font-style: italic;
    color: var(--crimson);
    line-height: 1.15;
}

.tala-alias {
    display: inline-block;
    margin-top: 0.45rem;
    font-size: 0.66rem;
    font-weight: 700;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--crimson-deep);
    background: var(--gold-light);
    padding: 0.25rem 0.6rem;
}

.tala-alias[hidden] {
    display: none;
}

.tala-formula {
    margin-top: 0.7rem;
    font-family: 'Cormorant Garamond', serif;
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text);
}

.tala-formula sub {
    font-size: 0.7em;
}

.tala-formula-sep {
    margin: 0 0.6rem;
    color: var(--gold);
}

.tala-label {
    font-size: 0.66rem;
    font-weight: 700;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--muted);
    margin: 1.3rem 0 0.5rem;
}

.tala-label-note {
    letter-spacing: 0.05em;
    text-transform: none;
    font-weight: 500;
}

.chip-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
}

.tala-chip {
    font-family: 'Raleway', sans-serif;
    font-size: 0.74rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    color: var(--crimson);
    background: white;
    border: 1px solid rgba(107, 0, 32, 0.25);
    padding: 0.45rem 0.8rem;
    cursor: pointer;
    transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.tala-chip:hover {
    border-color: var(--crimson);
}

.tala-chip.is-on {
    background: var(--crimson);
    color: var(--gold-pale);
    border-color: var(--crimson);
}

.tala-chip[data-preset] {
    font-weight: 700;
    border-color: var(--gold);
}

.tala-chip[data-preset].is-on {
    background: var(--gold);
    color: var(--crimson-deep);
    border-color: var(--gold);
}

.chip-num {
    opacity: 0.6;
    margin-left: 0.15rem;
}

.tala-chip:focus-visible,
.tala-btn:focus-visible {
    outline: 2px solid var(--gold);
    outline-offset: 2px;
}

.tala-controls {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.6rem;
    margin-top: 1.8rem;
}

.tala-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    white-space: nowrap;

    background: transparent;
    color: var(--crimson);
    border: 1px solid rgba(107, 0, 32, 0.4);
    padding: 0.7rem 1rem;

    font-family: 'Raleway', sans-serif;
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    text-transform: uppercase;

    cursor: pointer;
    transition: background 0.3s ease, color 0.3s ease, border-color 0.3s ease, transform 0.3s ease;
}

.tala-btn i {
    font-size: 1rem;
}

.tala-btn:hover {
    border-color: var(--crimson);
    transform: translateY(-2px);
}

.tala-btn.solid {
    background: var(--gold);
    color: var(--crimson-deep);
    border-color: var(--gold);
}

.tala-btn.solid:hover {
    background: var(--gold-light);
}

.tala-sound[aria-pressed="true"] {
    background: var(--crimson);
    color: var(--gold-pale);
    border-color: var(--crimson);
}


/* ---------- Beat strip ---------- */

.tala-strip {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1rem 1.4rem;
    margin-top: 3rem;
}

.strip-group {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.4rem;
}

.strip-anga {
    font-size: 0.62rem;
    font-weight: 700;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--muted);
}

.strip-cells {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.3rem;
}

.strip-cell {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-width: 3.4rem;
    padding: 0.4rem 0.3rem;
    border: 1px solid rgba(107, 0, 32, 0.18);
    background: white;
    transition: background 0.15s ease, color 0.15s ease, transform 0.15s ease;
}

.strip-num {
    font-family: 'Cormorant Garamond', serif;
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--crimson);
    line-height: 1.1;
}

.strip-act {
    font-size: 0.6rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--muted);
}

.strip-cell.kind-clap {
    border-color: rgba(107, 0, 32, 0.4);
}

.strip-cell.kind-turn {
    background: #fdf8ea;
}

.strip-cell.is-active {
    background: var(--crimson);
    border-color: var(--crimson);
    transform: translateY(-3px);
}

.strip-cell.is-active .strip-num {
    color: var(--gold-light);
}

.strip-cell.is-active .strip-act {
    color: var(--gold-pale);
}


/* ---------- Responsive ---------- */

@media (max-width: 900px) {
    .tala-layout {
        grid-template-columns: minmax(0, 1fr);
    }

    .tala-circle {
        max-width: 440px;
    }
}

@media (max-width: 768px) {
    #tala {
        padding: 4rem 1.5rem;
    }

    .tala-intro {
        margin-bottom: 2rem;
    }

    .tala-panel {
        padding: 1.8rem 1.4rem;
    }

    .tala-strip {
        margin-top: 2rem;
    }

    .strip-cell {
        min-width: 2.9rem;
    }
}

@media (max-width: 480px) {
    .tala-controls {
        grid-template-columns: minmax(0, 1fr);
    }

    .strip-cell {
        min-width: 2.5rem;
        padding: 0.3rem 0.15rem;
    }

    .strip-act {
        font-size: 0.52rem;
        letter-spacing: 0.02em;
    }
}

@media (prefers-reduced-motion: reduce) {
    .tala-hand-inner.clap .hand-part,
    .tala-hand-inner.clap .tala-ripple,
    .tala-hand-inner.turn {
        animation: none;
        transform: scaleX(-1);
    }

    .tala-node > *,
    .strip-cell,
    .tala-chip,
    .tala-btn {
        transition: none;
    }
}