:root {
    --cyan: #d6fff6;
    --violet: #231651;
    --turquoise: #4dccbd;
    --blue: #2374ab;
    --coral: #ff8484;
    --page-top: #091123;
    --page-mid: #15173f;
    --page-bottom: #0a2440;
    --panel: rgba(19, 26, 55, 0.78);
    --panel-strong: rgba(14, 22, 50, 0.9);
    --panel-soft: rgba(214, 255, 246, 0.08);
    --text-main: #f4fbff;
    --text-soft: rgba(230, 244, 255, 0.72);
    --border: rgba(214, 255, 246, 0.12);
    --shadow-lg: 0 28px 70px rgba(4, 8, 24, 0.42);
    --shadow-md: 0 18px 44px rgba(4, 8, 24, 0.32);
    --radius-xl: 32px;
    --radius-lg: 24px;
    --radius-md: 18px;
}

* {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    min-height: 100%;
}

body {
    background:
        radial-gradient(circle at top left, rgba(77, 204, 189, 0.24), transparent 24%),
        radial-gradient(circle at 85% 18%, rgba(255, 132, 132, 0.18), transparent 20%),
        radial-gradient(circle at 50% 100%, rgba(35, 116, 171, 0.28), transparent 28%),
        linear-gradient(180deg, var(--page-top) 0%, var(--page-mid) 45%, var(--page-bottom) 100%);
    color: var(--text-main);
    font-family: "Manrope", "Segoe UI", sans-serif;
}

body::before {
    content: "";
    position: fixed;
    inset: 0;
    background-image:
        linear-gradient(rgba(214, 255, 246, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(214, 255, 246, 0.03) 1px, transparent 1px);
    background-size: 24px 24px;
    mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.7), transparent 88%);
    pointer-events: none;
}

button,
img {
    user-select: none;
    -webkit-user-select: none;
}

button {
    appearance: none;
    -webkit-appearance: none;
    -webkit-tap-highlight-color: transparent;
}

.app-shell {
    position: relative;
    overflow: hidden;
    min-height: 100vh;
}

.app-shell__glow {
    position: absolute;
    width: 20rem;
    height: 20rem;
    border-radius: 50%;
    filter: blur(40px);
    opacity: 0.4;
    pointer-events: none;
}

.app-shell__glow--left {
    top: -5rem;
    left: -7rem;
    background: rgba(77, 204, 189, 0.38);
}

.app-shell__glow--right {
    right: -5rem;
    bottom: 7rem;
    background: rgba(255, 132, 132, 0.28);
}

.app {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    max-width: 34rem;
    min-height: 100vh;
    margin: 0 auto;
    padding: 1rem 1rem 2rem;
}

.app.is-playing {
    justify-content: center;
}

.topbar,
.status-card,
.end-panel,
.overlay-message,
.hint-pill,
.media-card {
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
}

.topbar,
.status-card,
.start-panel,
.end-panel,
.overlay-message {
    background: linear-gradient(180deg, rgba(19, 26, 55, 0.82), rgba(12, 18, 42, 0.86));
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.topbar {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 1rem;
    padding: 1.15rem 1.15rem 1.3rem;
}

.app:not(.is-playing) .topbar {
    justify-content: center;
    text-align: center;
}

.app:not(.is-playing) .topbar h1 {
    text-transform: uppercase;
}

.app:not(.is-playing) .progress-pill {
    display: none;
}

.eyebrow,
.status-card__label,
.end-panel__eyebrow {
    margin: 0 0 0.35rem;
    color: var(--turquoise);
    font-size: 0.77rem;
    font-weight: 800;
    letter-spacing: 0.14em;
    text-transform: uppercase;
}

.topbar h1,
.end-panel h2 {
    margin: 0;
    font-family: "Space Grotesk", "Segoe UI", sans-serif;
    font-size: clamp(2.2rem, 5vw, 3rem);
    line-height: 1.04;
    letter-spacing: -0.04em;
}

.progress-pill {
    flex-shrink: 0;
    padding: 0.7rem 1rem;
    border-radius: 999px;
    background: linear-gradient(135deg, rgba(77, 204, 189, 0.18), rgba(35, 116, 171, 0.24));
    border: 1px solid rgba(214, 255, 246, 0.14);
    color: var(--cyan);
    font-weight: 800;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

.status-card {
    position: relative;
    padding: 1rem 1.1rem;
    overflow: hidden;
}

.status-card::after {
    content: "";
    position: absolute;
    inset: auto -2rem -2rem auto;
    width: 8rem;
    height: 8rem;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(77, 204, 189, 0.18), transparent 70%);
    pointer-events: none;
}

.status-card__text,
.microcopy,
.end-panel__message,
.overlay-message p,
.noscript-banner {
    margin: 0;
    color: var(--text-soft);
    line-height: 1.5;
}

.status-card strong {
    color: var(--cyan);
}

.game-panel {
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.app.is-playing .topbar,
.app.is-playing .status-card,
.app.is-playing .start-panel,
.app.is-playing .microcopy {
    display: none;
}

.start-panel {
    position: relative;
    overflow: hidden;
    padding: 1.4rem 1.2rem 1.2rem;
    box-shadow: var(--shadow-lg);
    text-align: center;
}

.start-panel::before {
    content: "";
    position: absolute;
    inset: auto -2rem -2rem auto;
    width: 10rem;
    height: 10rem;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(255, 132, 132, 0.18), transparent 70%);
    pointer-events: none;
}

.start-panel__eyebrow {
    margin: 0 0 0.35rem;
    color: var(--coral);
    font-size: 0.77rem;
    font-weight: 800;
    letter-spacing: 0.14em;
    text-transform: uppercase;
}

.start-panel h2 {
    margin: 0;
    font-family: "Space Grotesk", "Segoe UI", sans-serif;
    font-size: clamp(2rem, 5vw, 2.6rem);
    line-height: 1.02;
    letter-spacing: -0.04em;
}

.start-panel__text {
    margin: 0.9rem 0 0;
    color: var(--text-soft);
    line-height: 1.6;
}

.start-panel__meta {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.65rem;
    margin-top: 1rem;
}

.start-panel__meta span {
    padding: 0.55rem 0.8rem;
    border-radius: 999px;
    background: rgba(214, 255, 246, 0.07);
    border: 1px solid rgba(214, 255, 246, 0.1);
    color: var(--cyan);
    font-size: 0.84rem;
    font-weight: 700;
}

.media-card {
    position: relative;
    overflow: hidden;
    width: 100%;
    aspect-ratio: 1 / 1;
    border-radius: var(--radius-xl);
    background:
        linear-gradient(180deg, rgba(19, 26, 55, 0.42), rgba(19, 26, 55, 0.2)),
        var(--panel-strong);
    border: 1px solid rgba(214, 255, 246, 0.12);
    box-shadow: var(--shadow-lg);
    transition: transform 220ms ease, box-shadow 220ms ease, opacity 220ms ease;
}

.media-card.is-image-loading::after {
    content: "";
    position: absolute;
    inset: 0;
    z-index: 4;
    background:
        radial-gradient(circle at center, rgba(77, 204, 189, 0.14), transparent 22%),
        linear-gradient(180deg, rgba(14, 22, 50, 0.24), rgba(14, 22, 50, 0.36));
    pointer-events: none;
}

.round-chip {
    position: absolute;
    top: 1rem;
    left: 1rem;
    z-index: 4;
    padding: 0.6rem 0.85rem;
    border-radius: 999px;
    background: rgba(9, 17, 35, 0.6);
    border: 1px solid rgba(214, 255, 246, 0.14);
    color: var(--cyan);
    font-size: 0.82rem;
    font-weight: 800;
    letter-spacing: 0.02em;
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.2);
}

.media-card::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(214, 255, 246, 0.12), transparent 28%, transparent 72%, rgba(255, 132, 132, 0.1));
    z-index: 2;
    pointer-events: none;
}

.media-card.is-dragging {
    transition: none;
}

.media-card.is-committing[data-commit="stock"] {
    transform: translateX(-7rem) rotate(-8deg);
    opacity: 0.94;
}

.media-card.is-committing[data-commit="not"] {
    transform: translateX(7rem) rotate(8deg);
    opacity: 0.94;
}

.media-card__overlay {
    position: absolute;
    inset: 0;
    background:
        linear-gradient(180deg, rgba(35, 22, 81, 0.12), transparent 24%, transparent 76%, rgba(9, 17, 35, 0.5)),
        linear-gradient(0deg, rgba(9, 17, 35, 0.08), rgba(9, 17, 35, 0.08));
    z-index: 3;
    pointer-events: none;
}

.media-card__image {
    position: absolute;
    inset: 0;
    z-index: 1;
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center center;
    pointer-events: none;
    transition: opacity 180ms ease;
}

.media-card.is-image-loading .media-card__image {
    opacity: 0.18;
}

.feedback-badge {
    position: absolute;
    left: 50%;
    bottom: 1rem;
    z-index: 4;
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
    width: calc(100% - 2rem);
    padding: 1rem 1.05rem;
    border-radius: var(--radius-md);
    color: #fff;
    transform: translate(-50%, 1rem);
    opacity: 0;
    pointer-events: none;
    transition: opacity 180ms ease, transform 180ms ease;
    box-shadow: 0 18px 36px rgba(0, 0, 0, 0.25);
}

.feedback-badge strong {
    font-size: 1rem;
}

.feedback-badge.is-visible {
    opacity: 1;
    transform: translate(-50%, 0);
}

.feedback-badge.is-correct {
    background: rgba(77, 204, 189, 0.96);
}

.feedback-badge.is-incorrect {
    background: rgba(255, 132, 132, 0.96);
}

.action-row {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.9rem;
    margin-top: 10px;
}

.start-btn,
.action-btn,
.play-again-btn,
.retry-btn {
    border: 0;
    border-radius: 999px;
    font: inherit;
    font-weight: 800;
    cursor: pointer;
    outline: none;
    transition: transform 180ms ease, opacity 180ms ease, box-shadow 180ms ease, filter 180ms ease;
}

.start-btn {
    min-height: 3.9rem;
    width: 100%;
    margin-top: 1.1rem;
    padding: 0.95rem 1rem;
    color: #fff;
    background: var(--turquoise) !important;
    box-shadow: none;
}

.action-btn {
    min-height: 4rem;
    padding: 0.95rem 1rem;
    color: #fff;
    border: none;
    box-shadow: none !important;
    filter: none !important;
    opacity: 1;
    isolation: isolate;
}

.start-btn:active,
.action-btn:active,
.play-again-btn:active,
.retry-btn:active {
    transform: translateY(1px) scale(0.99);
}

.start-btn:hover,
.action-btn:hover,
.play-again-btn:hover,
.retry-btn:hover {
    filter: none;
}

.action-btn:disabled {
    cursor: wait;
    opacity: 0.68;
}

.start-btn:focus,
.action-btn:focus,
.play-again-btn:focus,
.retry-btn:focus {
    outline: none;
}

.action-btn--stock,
.play-again-btn,
.retry-btn {
    background: var(--turquoise) !important;
    background-color: var(--turquoise) !important;
    background-image: none !important;
}

.action-btn--not {
    background: var(--coral) !important;
    background-color: var(--coral) !important;
    background-image: none !important;
}

.microcopy {
    padding: 0 0.2rem;
    font-size: 0.92rem;
    text-align: center;
}

.end-panel,
.overlay-message {
    padding: 1.4rem 1.2rem;
    text-align: center;
}

.end-panel {
    margin-top: auto;
}

.app:not(.is-playing) .end-panel {
    margin-top: 2rem;
}

.end-panel__message {
    margin-top: 0.8rem;
    font-size: 1rem;
}

.play-again-btn,
.retry-btn {
    min-height: 3.5rem;
    margin-top: 1rem;
    padding: 0.9rem 1.25rem;
    color: #fff;
}

.overlay-message {
    position: fixed;
    left: 50%;
    bottom: 1.5rem;
    width: min(calc(100% - 2rem), 30rem);
    transform: translateX(-50%);
}

.overlay-message--error {
    background: linear-gradient(180deg, rgba(50, 21, 44, 0.95), rgba(36, 17, 36, 0.95));
    border-color: rgba(255, 132, 132, 0.24);
}

.spinner {
    width: 2rem;
    height: 2rem;
    margin: 0 auto 0.8rem;
    border: 3px solid rgba(214, 255, 246, 0.12);
    border-top-color: var(--turquoise);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.hidden {
    display: none;
}

.noscript-banner {
    padding: 1rem;
    text-align: center;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

@media (min-width: 700px) {
    .app {
        padding-top: 1.4rem;
        padding-bottom: 2.5rem;
    }

    .app.is-playing {
        padding-top: 1.2rem;
    }

    .app.is-playing .game-panel {
        gap: 0.85rem;
    }

    .app.is-playing .action-row {
        order: -1;
    }

    .action-btn {
        min-height: 4.2rem;
        font-size: 1.03rem;
    }
}

@media (max-width: 699px) {
    .app.is-playing {
        justify-content: flex-start;
    }

    .app.is-playing .topbar {
        display: flex;
        justify-content: center;
        text-align: center;
    }

    .app.is-playing .progress-pill {
        display: none;
    }
}