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

:root {
    --pink: #ff2d78;
    --pink-glow: rgba(255, 45, 120, 0.5);
    --cyan: #00e5ff;
    --cyan-glow: rgba(0, 229, 255, 0.5);
    --green: #39ff14;
    --green-glow: rgba(57, 255, 20, 0.4);
    --red: #ff1744;
    --red-glow: rgba(255, 23, 68, 0.4);
    --yellow: #ffea00;
    --bg-dark: #0a0a0f;
    --bg-card: rgba(15, 15, 25, 0.9);
    --text: #ffffff;
    --text-dim: rgba(255, 255, 255, 0.6);
    --border: rgba(255, 255, 255, 0.1);
}

body {
    font-family: 'Segoe UI', 'Hiragino Sans', 'Noto Sans JP', sans-serif;
    background: var(--bg-dark);
    color: var(--text);
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
}

/* ===== Background Image ===== */
.bg-image {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    transition: opacity 0.5s ease;
    opacity: 0.3;
    z-index: 0;
}

.bg-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        180deg,
        rgba(10, 10, 15, 0.7) 0%,
        rgba(10, 10, 15, 0.5) 50%,
        rgba(10, 10, 15, 0.8) 100%
    );
    z-index: 1;
}

/* ===== Container ===== */
.container {
    position: relative;
    z-index: 2;
    max-width: 700px;
    margin: 0 auto;
    padding: 20px 16px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ===== Header ===== */
.header {
    text-align: center;
    margin-bottom: 16px;
}

.title {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
}

.title-jp {
    font-size: 2rem;
    font-weight: 900;
    background: linear-gradient(135deg, var(--pink), var(--cyan));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: none;
    filter: drop-shadow(0 0 20px var(--pink-glow));
}

.title-en {
    font-size: 0.85rem;
    color: var(--text-dim);
    letter-spacing: 3px;
    text-transform: uppercase;
}

.brand {
    font-size: 0.75rem;
    color: var(--pink);
    margin-top: 4px;
    letter-spacing: 2px;
}

/* ===== Bilingual Labels ===== */
.label-jp {
    display: block;
    font-size: 1em;
}

.label-en {
    display: block;
    font-size: 0.7em;
    color: var(--text-dim);
    font-weight: 400;
}

/* ===== Screens ===== */
.screen {
    display: none;
    flex: 1;
    animation: fadeIn 0.4s ease;
}

.screen.active {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ===== Start Screen ===== */
.start-content {
    text-align: center;
}

.start-icon {
    font-size: 3rem;
    margin-bottom: 16px;
}

.start-content h2 .label-jp {
    font-size: 1.4rem;
    margin-bottom: 4px;
}

.start-desc {
    margin: 16px 0 24px;
    line-height: 1.6;
}

.start-desc .label-jp {
    font-size: 0.95rem;
    color: var(--text-dim);
}

.start-rules {
    display: flex;
    flex-direction: column;
    gap: 12px;
    max-width: 360px;
    margin: 0 auto 32px;
}

.rule {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
    padding: 10px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 10px;
}

.rule-icon {
    font-size: 1.3rem;
}

.rule .label-jp {
    font-size: 0.9rem;
}

.rule .label-en {
    font-size: 0.65rem;
}

/* ===== Buttons ===== */
.btn {
    padding: 14px 40px;
    border: none;
    border-radius: 12px;
    font-size: 1.1rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.2s ease;
    font-family: inherit;
}

.btn-primary {
    background: linear-gradient(135deg, var(--pink), #ff6b9d);
    color: white;
    box-shadow: 0 4px 20px var(--pink-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 30px var(--pink-glow);
}

.btn-accent {
    background: linear-gradient(135deg, var(--cyan), #00b8d4);
    color: #000;
    box-shadow: 0 4px 20px var(--cyan-glow);
}

.btn-accent:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 30px var(--cyan-glow);
}

.btn:active {
    transform: translateY(0);
}

/* ===== Game HUD ===== */
.game-hud {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 8px;
    margin-bottom: 16px;
}

.hud-item {
    text-align: center;
    padding: 10px 4px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 10px;
}

.hud-label {
    display: block;
    margin-bottom: 4px;
}

.hud-label .label-jp {
    font-size: 0.7rem;
    color: var(--text-dim);
}

.hud-label .label-en {
    font-size: 0.55rem;
}

.hud-value {
    display: block;
    font-size: 1.6rem;
    font-weight: 900;
    color: var(--cyan);
    text-shadow: 0 0 10px var(--cyan-glow);
}

.timer-value {
    color: var(--pink);
    text-shadow: 0 0 10px var(--pink-glow);
}

/* ===== Timer Bar ===== */
.timer-bar-container {
    width: 100%;
    height: 6px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 3px;
    overflow: hidden;
    margin-bottom: 24px;
}

.timer-bar {
    height: 100%;
    width: 100%;
    background: linear-gradient(90deg, var(--pink), var(--cyan));
    border-radius: 3px;
    transition: width 0.1s linear;
}

.timer-bar.warning {
    background: linear-gradient(90deg, var(--red), var(--yellow));
    animation: barPulse 0.5s ease infinite;
}

@keyframes barPulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.6; }
}

/* ===== Word Display ===== */
.word-display {
    text-align: center;
    padding: 32px 16px;
    margin-bottom: 20px;
    background: var(--bg-card);
    border: 2px solid var(--border);
    border-radius: 16px;
    min-height: 120px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.15s ease;
}

.word-display.correct {
    border-color: var(--green);
    box-shadow: 0 0 30px var(--green-glow);
    background: rgba(57, 255, 20, 0.08);
}

.word-display.wrong {
    border-color: var(--red);
    box-shadow: 0 0 30px var(--red-glow);
    animation: shake 0.4s ease;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    20% { transform: translateX(-8px); }
    40% { transform: translateX(8px); }
    60% { transform: translateX(-6px); }
    80% { transform: translateX(6px); }
}

.current-word {
    font-size: 2.8rem;
    font-weight: 900;
    letter-spacing: 4px;
    text-transform: uppercase;
    color: var(--text);
    text-shadow: 0 0 20px rgba(255, 255, 255, 0.3);
}

/* ===== Typing Input ===== */
.input-area {
    margin-bottom: 16px;
}

.typing-input {
    width: 100%;
    padding: 16px 20px;
    font-size: 1.4rem;
    font-weight: 700;
    font-family: 'Consolas', 'Courier New', monospace;
    background: rgba(20, 20, 35, 0.95);
    border: 2px solid var(--cyan);
    border-radius: 12px;
    color: var(--cyan);
    text-align: center;
    outline: none;
    letter-spacing: 2px;
    caret-color: var(--cyan);
    box-shadow: 0 0 15px var(--cyan-glow);
    transition: all 0.2s ease;
}

.typing-input:focus {
    border-color: var(--pink);
    box-shadow: 0 0 25px var(--pink-glow);
    caret-color: var(--pink);
}

.typing-input::placeholder {
    color: rgba(255, 255, 255, 0.25);
    font-size: 0.9rem;
    letter-spacing: 1px;
}

/* ===== Combo Display ===== */
.combo-display {
    text-align: center;
    padding: 8px;
    font-size: 1.2rem;
    font-weight: 900;
    color: var(--yellow);
    text-shadow: 0 0 15px rgba(255, 234, 0, 0.5);
    animation: comboPop 0.3s ease;
    transition: opacity 0.3s ease;
}

.combo-display.hidden {
    opacity: 0;
}

@keyframes comboPop {
    0% { transform: scale(0.5); opacity: 0; }
    50% { transform: scale(1.2); }
    100% { transform: scale(1); opacity: 1; }
}

/* ===== Result Screen ===== */
.result-content {
    text-align: center;
}

.result-title .label-jp {
    font-size: 1.8rem;
    margin-bottom: 4px;
}

.result-rank {
    font-size: 2rem;
    margin: 16px 0;
    padding: 16px;
    background: var(--bg-card);
    border: 2px solid var(--pink);
    border-radius: 16px;
    box-shadow: 0 0 20px var(--pink-glow);
}

.result-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    margin: 24px 0;
}

.stat-card {
    padding: 16px 8px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    transition: transform 0.2s ease;
}

.stat-card:hover {
    transform: translateY(-2px);
}

.stat-icon {
    font-size: 1.5rem;
    margin-bottom: 4px;
}

.stat-value {
    font-size: 2rem;
    font-weight: 900;
    color: var(--cyan);
    text-shadow: 0 0 10px var(--cyan-glow);
    margin-bottom: 4px;
}

.stat-label .label-jp {
    font-size: 0.8rem;
    color: var(--text-dim);
}

.stat-label .label-en {
    font-size: 0.6rem;
}

/* ===== Result Buttons ===== */
.result-buttons {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 8px;
}

.result-buttons .btn {
    flex: 1;
    min-width: 140px;
    max-width: 200px;
}

/* ===== Footer / Patreon ===== */
.footer {
    margin-top: auto;
    padding: 16px 0 8px;
    text-align: center;
}

.patreon-cta {
    display: inline-block;
    padding: 12px 28px;
    background: linear-gradient(135deg, var(--pink), #ff6b9d);
    border-radius: 30px;
    color: white;
    text-decoration: none;
    font-weight: 700;
    box-shadow: 0 4px 20px var(--pink-glow);
    transition: all 0.2s ease;
}

.patreon-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 30px var(--pink-glow);
}

.patreon-cta .label-jp {
    font-size: 0.9rem;
}

.patreon-cta .label-en {
    font-size: 0.6rem;
    color: rgba(255, 255, 255, 0.8);
}

/* ===== Responsive ===== */
@media (max-width: 480px) {
    .title-jp {
        font-size: 1.5rem;
    }

    .game-hud {
        grid-template-columns: repeat(2, 1fr);
    }

    .current-word {
        font-size: 2rem;
    }

    .typing-input {
        font-size: 1.1rem;
        padding: 12px 16px;
    }

    .result-stats {
        grid-template-columns: repeat(2, 1fr);
    }

    .stat-value {
        font-size: 1.5rem;
    }

    .btn {
        padding: 12px 24px;
        font-size: 1rem;
    }
}

/* ===== Scrollbar ===== */
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: var(--bg-dark);
}

::-webkit-scrollbar-thumb {
    background: var(--pink);
    border-radius: 3px;
}