:root {
    --paper: #F5EEDB;
    --paper-light: #FBF6EA;
    --card: #FFF9ED;
    --ink: #3A2F23;
    --muted: #6B5B47;
    --gold: #B8892D;
    --gold-dark: #8F6820;
    --border: #D9C8A5;
    --footer: #4B3A29;
    --footer-text: #EADFC3;
    --shadow: 0 8px 24px rgba(58, 47, 35, .12);
    --radius: 16px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    min-height: 100vh;
    background: var(--paper);
    color: var(--ink);
    font-family: "Inter", sans-serif;
    line-height: 1.6;
    display: flex;
    flex-direction: column;
}

a {
    color: inherit;
    text-decoration: none;
}

button {
    font: inherit;
    cursor: pointer;
}

button:disabled {
    cursor: not-allowed;
    opacity: .55;
}

.game-header {
    position: sticky;
    top: 0;
    z-index: 10;
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    padding: .8rem 2rem;
    background: rgba(251, 246, 234, .95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
}

.back-link {
    color: var(--muted);
    font-weight: 600;
}

.back-link:hover {
    color: var(--gold);
}

.brand {
    display: flex;
    align-items: center;
    gap: .7rem;
}

.brand-sanskrit {
    color: var(--gold);
    font-family: "Noto Sans Devanagari", sans-serif;
    font-size: 1.4rem;
}

.brand-name {
    font-family: "Playfair Display", serif;
    font-size: 1.25rem;
    font-weight: 700;
}

.progress {
    justify-self: end;
    padding: .4rem .8rem;
    border: 1px solid var(--border);
    border-radius: 999px;
    color: var(--muted);
    font-size: .9rem;
    font-weight: 600;
}

.game-container {
    width: min(900px, 92%);
    margin: 0 auto;
    padding: 4rem 0 5rem;
    flex: 1;
}

.game-heading {
    text-align: center;
    margin-bottom: 2rem;
}

.chapter-label {
    margin-bottom: .5rem;
    color: var(--gold);
    font-size: .8rem;
    font-weight: 700;
    letter-spacing: .12em;
}

.game-heading h1 {
    font-family: "Playfair Display", serif;
    font-size: clamp(2.2rem, 5vw, 3.5rem);
    line-height: 1.2;
}

.practice-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: clamp(1.5rem, 4vw, 3rem);
    box-shadow: var(--shadow);
    animation: cardAppear .6s ease both;
}

.prompt-heading {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 2rem;
    color: var(--gold-dark);
    font-size: .8rem;
    font-weight: 700;
    letter-spacing: .12em;
}

.audio-button {
    border: 1px solid var(--border);
    border-radius: 999px;
    background: var(--paper-light);
    color: var(--ink);
    padding: .55rem 1rem;
    font-size: .85rem;
    font-weight: 600;
    letter-spacing: normal;
    transition:
        transform .2s ease,
        background .2s ease,
        border-color .2s ease,
        opacity .2s ease;
}

.audio-button:hover {
    border-color: var(--gold);
    background: var(--paper);
    transform: translateY(-2px);
}

.audio-button:active {
    transform: translateY(0);
}

.prompt {
    padding: 1rem 0 2rem;
    text-align: center;
}

.quarter-devanagari {
    font-family: "Noto Sans Devanagari", sans-serif;
    font-size: clamp(1.8rem, 4vw, 2.7rem);
    font-weight: 600;
    line-height: 1.8;
}

.quarter-english {
    margin-top: .75rem;
    color: var(--muted);
    font-size: clamp(1rem, 2vw, 1.15rem);
    font-style: italic;
}

.quarter-devanagari,
.quarter-english,
.verse-devanagari,
.verse-english {
    animation: textAppear .5s ease both;
}

.line {
    height: 1px;
    margin-bottom: 2rem;
    background: var(--border);
}

.answer {
    padding-bottom: 2rem;
    text-align: center;
}

.answer.hidden {
    display: none;
}

.answer:not(.hidden) {
    animation: answerAppear .45s ease both;
}

.answer-label {
    margin-bottom: 1.25rem;
    color: var(--gold-dark);
    font-size: .75rem;
    font-weight: 700;
    letter-spacing: .12em;
}

.verse-devanagari {
    white-space: pre-line;
    font-family: "Noto Sans Devanagari", sans-serif;
    font-size: clamp(1.4rem, 3vw, 2rem);
    line-height: 2;
}

.verse-english {
    white-space: pre-line;
    margin-top: 1rem;
    color: var(--muted);
    font-size: 1rem;
    line-height: 1.8;
    font-style: italic;
}

.main-action {
    display: flex;
    justify-content: center;
}

.reveal-button {
    border: none;
    border-radius: 999px;
    background: var(--gold);
    color: white;
    padding: .9rem 1.7rem;
    font-weight: 700;
    transition:
        transform .2s ease,
        background .2s ease,
        border-color .2s ease,
        opacity .2s ease;
}

.reveal-button:hover {
    background: var(--gold-dark);
    transform: translateY(-2px);
}

.reveal-button:active {
    transform: translateY(0);
}

.controls {
    display: flex;
    justify-content: center;
    gap: .75rem;
    margin-top: 1.5rem;
}

.control-button {
    border: 1px solid var(--border);
    border-radius: 999px;
    background: var(--paper-light);
    color: var(--ink);
    padding: .7rem 1.1rem;
    font-weight: 600;
    transition:
        transform .2s ease,
        background .2s ease,
        border-color .2s ease,
        opacity .2s ease;
}

.control-button:hover {
    border-color: var(--gold);
    background: var(--card);
    transform: translateY(-2px);
}

.control-button:active {
    transform: translateY(0);
}

.keyboard-hint {
    margin-top: 1.25rem;
    color: var(--muted);
    text-align: center;
    font-size: .85rem;
}

kbd {
    padding: .15rem .4rem;
    border: 1px solid var(--border);
    border-bottom-width: 2px;
    border-radius: 5px;
    background: var(--paper-light);
    font-family: "Inter", sans-serif;
    font-size: .75rem;
}

.pronunciation-card {
    margin-top: 1.5rem;
    padding: clamp(1.5rem, 4vw, 2rem);
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.pronunciation-heading {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1rem;
}

.pronunciation-label {
    margin-bottom: .25rem;
    color: var(--gold-dark);
    font-size: .75rem;
    font-weight: 700;
    letter-spacing: .12em;
}

.pronunciation-heading h2 {
    font-family: "Playfair Display", serif;
    font-size: clamp(1.4rem, 3vw, 1.8rem);
    line-height: 1.3;
}

.ai-status {
    margin-top: .75rem;
    color: var(--muted);
    font-size: .9rem;
}

.pronunciation-actions {
    display: flex;
    justify-content: center;
    gap: .75rem;
    margin-top: 1.25rem;
}

.record-button,
.score-button {
    border: 1px solid var(--border);
    border-radius: 999px;
    padding: .75rem 1.2rem;
    font-weight: 700;
    transition:
        transform .2s ease,
        background .2s ease,
        border-color .2s ease,
        opacity .2s ease;
}

.record-button {
    background: var(--gold);
    color: white;
    border-color: var(--gold);
}

.record-button:hover:not(:disabled) {
    background: var(--gold-dark);
    border-color: var(--gold-dark);
    transform: translateY(-2px);
}

.score-button {
    background: var(--paper-light);
    color: var(--ink);
}

.score-button:hover:not(:disabled) {
    background: var(--paper);
    border-color: var(--gold);
    transform: translateY(-2px);
}

.record-button:active:not(:disabled),
.score-button:active:not(:disabled) {
    transform: translateY(0);
}

.ai-result {
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border);
    text-align: center;
}

.ai-result.hidden {
    display: none;
}

.score-display {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: .25rem;
}

.score-value {
    color: var(--gold-dark);
    font-family: "Playfair Display", serif;
    font-size: clamp(3rem, 8vw, 4.5rem);
    font-weight: 700;
    line-height: 1;
}

.score-out-of {
    color: var(--muted);
    font-size: 1rem;
    font-weight: 600;
}

.score-message {
    margin-top: .75rem;
    color: var(--muted);
    font-size: .95rem;
}

.game-footer {
    display: flex;
    justify-content: center;
    gap: 1rem;
    padding: 1.5rem;
    background: var(--footer);
    color: var(--footer-text);
    font-size: .85rem;
}

button:focus-visible,
a:focus-visible {
    outline: 2px solid var(--gold);
    outline-offset: 3px;
}

@keyframes cardAppear {
    from {
        opacity: 0;
        transform: translateY(18px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes verseFade {
    from {
        opacity: 0;
        transform: translateY(12px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes textAppear {
    from {
        opacity: 0;
        transform: translateY(8px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes answerAppear {
    from {
        opacity: 0;
        transform: translateY(15px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.practice-card.verse-enter {
    animation: verseFade .45s ease both;
}

@media (max-width: 650px) {
    .game-header {
        grid-template-columns: 1fr auto;
        grid-template-areas:
            "back progress"
            "brand brand";
        gap: .75rem;
        padding: .8rem 1rem;
    }

    .back-link {
        grid-area: back;
    }

    .progress {
        grid-area: progress;
    }

    .brand {
        grid-area: brand;
        justify-self: center;
    }

    .game-container {
        width: 94%;
        padding-top: 2.5rem;
    }

    .practice-card {
        padding: 1.5rem 1rem;
    }

    .pronunciation-card {
        padding: 1.5rem 1rem;
    }

    .pronunciation-actions {
        flex-direction: column;
    }

    .record-button,
    .score-button {
        width: 100%;
    }

    .controls {
        flex-wrap: wrap;
    }

    .control-button {
        flex: 1;
        min-width: 100px;
    }

    .game-footer {
        flex-direction: column;
        align-items: center;
        gap: .25rem;
    }
}

@media (max-width: 400px) {
    .quarter-devanagari {
        font-size: 1.55rem;
    }

    .quarter-english {
        font-size: .95rem;
    }

    .audio-button {
        padding: .45rem .75rem;
    }

    .pronunciation-heading h2 {
        font-size: 1.3rem;
    }
}

@media (prefers-reduced-motion: reduce) {
    .practice-card,
    .practice-card.verse-enter,
    .quarter-devanagari,
    .quarter-english,
    .verse-devanagari,
    .verse-english,
    .answer:not(.hidden) {
        animation: none;
    }

    .reveal-button,
    .audio-button,
    .control-button,
    .record-button,
    .score-button {
        transition: none;
    }
}