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

:root {
    --pink: #ff2d7b;
    --cyan: #00e5ff;
    --dark: #0a0a12;
    --dark2: #14142a;
    --card-bg: #1a1a2e;
    --like-green: #00ff88;
    --skip-red: #ff4466;
    --text: #ffffff;
    --text-dim: #aaaacc;
}

html, body {
    width: 100%;
    height: 100%;
    overflow: hidden;
    font-family: 'Segoe UI', 'Hiragino Sans', 'Noto Sans JP', sans-serif;
    background: var(--dark);
    color: var(--text);
    -webkit-user-select: none;
    user-select: none;
    touch-action: none;
}

/* ===== Screens ===== */
.screen {
    display: none;
    width: 100%;
    height: 100%;
    position: fixed;
    top: 0;
    left: 0;
}

.screen.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

.container {
    text-align: center;
    padding: 20px;
    max-width: 480px;
    width: 100%;
}

/* ===== Typography ===== */
.title {
    font-size: 2.4rem;
    font-weight: 900;
    line-height: 1.2;
    margin-bottom: 16px;
}

.title-en {
    font-size: 1.4rem;
    color: var(--cyan);
}

.glow {
    text-shadow: 0 0 20px var(--pink), 0 0 40px rgba(255, 45, 123, 0.3);
}

.subtitle {
    font-size: 1rem;
    color: var(--text-dim);
    margin-bottom: 24px;
    line-height: 1.6;
}

/* ===== Instructions ===== */
.instructions {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 32px;
}

.instruction-row {
    display: flex;
    align-items: center;
    gap: 12px;
    background: var(--dark2);
    padding: 12px 16px;
    border-radius: 12px;
    font-size: 0.95rem;
    line-height: 1.5;
    text-align: left;
}

.instruction-icon {
    font-size: 1.8rem;
    flex-shrink: 0;
}

/* ===== Buttons ===== */
.btn {
    display: inline-block;
    padding: 14px 36px;
    border: none;
    border-radius: 50px;
    font-size: 1.1rem;
    font-weight: 700;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
    text-decoration: none;
}

.btn:active {
    transform: scale(0.95);
}

.btn-primary {
    background: linear-gradient(135deg, var(--pink), #ff6b9d);
    color: #fff;
    box-shadow: 0 4px 20px rgba(255, 45, 123, 0.4);
}

.btn-primary:hover {
    box-shadow: 0 4px 30px rgba(255, 45, 123, 0.6);
}

.btn-share {
    background: #1da1f2;
    color: #fff;
    box-shadow: 0 4px 20px rgba(29, 161, 242, 0.3);
}

.btn-patreon {
    background: linear-gradient(135deg, #ff424d, #ff6b6b);
    color: #fff;
    box-shadow: 0 4px 20px rgba(255, 66, 77, 0.4);
    display: inline-block;
    margin-top: 8px;
}

/* ===== Brand ===== */
.brand {
    margin-top: 32px;
}

.brand-name {
    font-size: 0.9rem;
    color: var(--text-dim);
    letter-spacing: 2px;
    text-transform: uppercase;
}

/* ===== Game Header ===== */
.game-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    padding: 12px 16px;
    background: rgba(10, 10, 18, 0.9);
    backdrop-filter: blur(10px);
    z-index: 10;
    display: flex;
    align-items: center;
    gap: 12px;
}

.progress-text {
    font-size: 0.85rem;
    color: var(--cyan);
    font-weight: 700;
    white-space: nowrap;
}

.progress-bar {
    flex: 1;
    height: 6px;
    background: var(--dark2);
    border-radius: 3px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--pink), var(--cyan));
    border-radius: 3px;
    transition: width 0.3s ease;
    width: 0%;
}

.score-display {
    font-size: 0.85rem;
    color: var(--like-green);
    font-weight: 700;
    white-space: nowrap;
}

/* ===== Card Area ===== */
.card-area {
    position: fixed;
    top: 55px;
    left: 0;
    right: 0;
    bottom: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.card-container {
    position: relative;
    width: 300px;
    height: 420px;
    max-width: 85vw;
    max-height: 70vh;
}

.swipe-card {
    position: absolute;
    width: 100%;
    height: 100%;
    background: var(--card-bg);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
    cursor: grab;
    transition: none;
    will-change: transform;
}

.swipe-card.animate-out {
    transition: transform 0.4s ease-out, opacity 0.4s ease-out;
    pointer-events: none;
}

.swipe-card.dragging {
    cursor: grabbing;
}

.card-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    pointer-events: none;
}

/* ===== Card Labels ===== */
.card-label {
    position: absolute;
    top: 24px;
    padding: 8px 20px;
    font-size: 1.6rem;
    font-weight: 900;
    border-radius: 8px;
    border: 4px solid;
    opacity: 0;
    transition: opacity 0.15s;
    z-index: 5;
    pointer-events: none;
    letter-spacing: 2px;
}

.card-label-like {
    right: 16px;
    color: var(--like-green);
    border-color: var(--like-green);
    background: rgba(0, 255, 136, 0.15);
    transform: rotate(15deg);
}

.card-label-skip {
    left: 16px;
    color: var(--skip-red);
    border-color: var(--skip-red);
    background: rgba(255, 68, 102, 0.15);
    transform: rotate(-15deg);
}

/* ===== Card Overlay Tint ===== */
.swipe-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border-radius: 20px;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.15s;
    z-index: 2;
}

.swipe-card.tint-like::after {
    background: rgba(0, 255, 136, 0.2);
    opacity: 1;
}

.swipe-card.tint-skip::after {
    background: rgba(255, 68, 102, 0.2);
    opacity: 1;
}

/* ===== Swipe Hints ===== */
.swipe-hints {
    position: fixed;
    bottom: 10px;
    left: 0;
    right: 0;
    display: flex;
    justify-content: space-between;
    padding: 0 24px;
    z-index: 10;
}

.hint-skip, .hint-like {
    font-size: 0.85rem;
    font-weight: 700;
    opacity: 0.4;
}

.hint-skip {
    color: var(--skip-red);
}

.hint-like {
    color: var(--like-green);
}

/* ===== Result Screen ===== */
.result-container {
    max-height: 100vh;
    overflow-y: auto;
    padding: 24px 16px 40px;
    -webkit-overflow-scrolling: touch;
}

.result-title {
    font-size: 1.8rem;
    margin-bottom: 12px;
}

.result-message {
    font-size: 1.1rem;
    color: var(--text-dim);
    margin-bottom: 20px;
    line-height: 1.5;
}

.result-message.empty {
    font-size: 1.6rem;
    color: var(--skip-red);
    font-weight: 700;
}

/* ===== Liked Grid ===== */
.liked-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 10px;
    margin-bottom: 20px;
}

.liked-grid img {
    width: 100%;
    aspect-ratio: 1;
    object-fit: cover;
    border-radius: 12px;
    border: 2px solid var(--pink);
    box-shadow: 0 4px 15px rgba(255, 45, 123, 0.3);
    animation: popIn 0.3s ease-out both;
}

@keyframes popIn {
    from {
        transform: scale(0.5);
        opacity: 0;
    }
    to {
        transform: scale(1);
        opacity: 1;
    }
}

.liked-grid img:nth-child(1) { animation-delay: 0s; }
.liked-grid img:nth-child(2) { animation-delay: 0.05s; }
.liked-grid img:nth-child(3) { animation-delay: 0.1s; }
.liked-grid img:nth-child(4) { animation-delay: 0.15s; }
.liked-grid img:nth-child(5) { animation-delay: 0.2s; }
.liked-grid img:nth-child(6) { animation-delay: 0.25s; }
.liked-grid img:nth-child(7) { animation-delay: 0.3s; }
.liked-grid img:nth-child(8) { animation-delay: 0.35s; }
.liked-grid img:nth-child(9) { animation-delay: 0.4s; }
.liked-grid img:nth-child(10) { animation-delay: 0.45s; }

.result-stats {
    font-size: 0.9rem;
    color: var(--text-dim);
    margin-bottom: 20px;
}

/* ===== Result Buttons ===== */
.result-buttons {
    display: flex;
    flex-direction: column;
    gap: 12px;
    align-items: center;
    margin-bottom: 24px;
}

.result-buttons .btn {
    width: 280px;
    max-width: 100%;
}

/* ===== Patreon CTA ===== */
.patreon-cta {
    background: linear-gradient(135deg, rgba(255, 66, 77, 0.1), rgba(255, 45, 123, 0.1));
    border: 1px solid rgba(255, 66, 77, 0.3);
    border-radius: 16px;
    padding: 20px;
    margin-top: 8px;
}

.patreon-cta p {
    font-size: 0.95rem;
    color: var(--text-dim);
    line-height: 1.5;
    margin-bottom: 4px;
}

/* ===== Responsive ===== */
@media (max-width: 380px) {
    .title {
        font-size: 2rem;
    }

    .card-container {
        width: 260px;
        height: 370px;
    }

    .liked-grid {
        grid-template-columns: repeat(auto-fill, minmax(90px, 1fr));
    }
}

@media (min-width: 768px) {
    .card-container {
        width: 340px;
        height: 480px;
    }
}