/* WordMaster - 家庭背单词应用 */

:root {
    --primary: #4A90D9;
    --primary-light: #6DB3F2;
    --success: #4CAF50;
    --success-light: #81C784;
    --warning: #FF9800;
    --danger: #F44336;
    --danger-light: #EF9A9A;
    --bg: #F5F7FA;
    --card: #FFFFFF;
    --text: #333333;
    --text-light: #888888;
    --radius: 16px;
    --shadow: 0 2px 12px rgba(0,0,0,0.08);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    line-height: 1.6;
}

/* ── Layout ── */
.container {
    max-width: 640px;
    margin: 0 auto;
    padding: 16px;
}

.page {
    max-width: 640px;
    margin: 0 auto;
    padding: 16px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ── Header ── */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 0;
    margin-bottom: 16px;
}

.header h1 {
    font-size: 1.3rem;
    font-weight: 600;
}

.header .coins {
    display: flex;
    align-items: center;
    gap: 4px;
    background: #FFF8E1;
    padding: 4px 12px;
    border-radius: 20px;
    font-weight: 600;
    font-size: 0.95rem;
}

/* ── Cards ── */
.card {
    background: var(--card);
    border-radius: var(--radius);
    padding: 20px;
    box-shadow: var(--shadow);
    margin-bottom: 16px;
}

.card-title {
    font-size: 1rem;
    color: var(--text-light);
    margin-bottom: 8px;
}

/* ── Buttons ── */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 12px 24px;
    border: none;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
    color: white;
}

.btn:active { transform: scale(0.96); }

.btn-primary { background: var(--primary); }
.btn-primary:hover { background: var(--primary-light); }
.btn-success { background: var(--success); }
.btn-success:hover { background: var(--success-light); }
.btn-warning { background: var(--warning); }
.btn-danger { background: var(--danger); }
.btn-outline {
    background: transparent;
    border: 2px solid var(--primary);
    color: var(--primary);
}

.btn-lg {
    padding: 16px 32px;
    font-size: 1.2rem;
    border-radius: 16px;
    width: 100%;
}

.btn-choice {
    padding: 16px 20px;
    font-size: 1.15rem;
    width: 100%;
    text-align: center;
    border: 2px solid #E0E0E0;
    border-radius: 14px;
    background: white;
    color: var(--text);
    cursor: pointer;
    transition: all 0.15s;
}

.btn-choice:active { transform: scale(0.97); }
.btn-choice.correct {
    border-color: var(--success);
    background: #E8F5E9;
    color: #2E7D32;
}
.btn-choice.wrong {
    border-color: var(--danger);
    background: #FFEBEE;
    color: #C62828;
}

/* ── User Avatar Cards ── */
.user-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-top: 20px;
}

.user-card {
    background: white;
    border-radius: var(--radius);
    padding: 24px 16px;
    text-align: center;
    cursor: pointer;
    box-shadow: var(--shadow);
    transition: transform 0.2s;
    text-decoration: none;
    color: var(--text);
}

.user-card:active { transform: scale(0.95); }

.user-card .avatar {
    font-size: 3rem;
    margin-bottom: 8px;
}

.user-card .nickname {
    font-size: 1.3rem;
    font-weight: 600;
}

.user-card .title {
    font-size: 0.85rem;
    color: var(--text-light);
    margin-top: 4px;
}

.user-card .coins {
    font-size: 0.85rem;
    color: var(--warning);
    margin-top: 4px;
}

/* ── Word Display ── */
.word-display {
    text-align: center;
    padding: 32px 16px;
}

.word-display .word {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 8px;
    letter-spacing: 0.5px;
}

.word-display .phonetic {
    font-size: 1.1rem;
    color: var(--text-light);
    margin-bottom: 12px;
}

.word-display .meaning {
    font-size: 1.4rem;
    color: var(--text-light);
    margin-bottom: 16px;
}

.word-display .example {
    font-size: 1rem;
    color: #999;
    font-style: italic;
    margin-top: 8px;
}

.sound-btn {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 8px 16px;
    border: none;
    border-radius: 20px;
    background: #E3F2FD;
    color: var(--primary);
    font-size: 0.95rem;
    cursor: pointer;
}

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

/* ── Quiz Controls ── */
.quiz-options {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: 20px;
}

/* ── Spelling input ── */
.spell-input {
    width: 100%;
    padding: 14px 18px;
    font-size: 1.3rem;
    border: 2px solid #E0E0E0;
    border-radius: 14px;
    outline: none;
    text-align: center;
    letter-spacing: 2px;
    transition: border-color 0.2s;
}

.spell-input:focus { border-color: var(--primary); }
.spell-input.correct { border-color: var(--success); background: #E8F5E9; }
.spell-input.wrong { border-color: var(--danger); background: #FFEBEE; }

/* ── Progress ── */
.progress-bar {
    display: flex;
    gap: 4px;
    margin: 8px 0 16px;
}

.progress-dot {
    flex: 1;
    height: 6px;
    border-radius: 3px;
    background: #E0E0E0;
    transition: background 0.3s;
}

.progress-dot.done { background: var(--success); }
.progress-dot.wrong { background: var(--danger); }

/* ── Combo Counter ── */
.combo {
    text-align: center;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--warning);
    margin: 8px 0;
    min-height: 28px;
}

/* ── Result Screen ── */
.result {
    text-align: center;
    padding: 32px 16px;
}

.result .big-icon { font-size: 4rem; margin-bottom: 12px; }
.result h2 { font-size: 1.6rem; margin-bottom: 8px; }
.result .stats { color: var(--text-light); margin-bottom: 16px; }
.result .streak { font-size: 0.95rem; color: var(--warning); margin-bottom: 20px; }

/* ── Login ── */
.login-box {
    max-width: 360px;
    margin: 80px auto;
    text-align: center;
}

.login-box h1 { font-size: 2rem; margin-bottom: 8px; }
.login-box p { color: var(--text-light); margin-bottom: 24px; }

.login-box input {
    width: 100%;
    padding: 14px 18px;
    font-size: 1.1rem;
    border: 2px solid #E0E0E0;
    border-radius: 14px;
    outline: none;
    text-align: center;
    margin-bottom: 16px;
}

.login-box input:focus { border-color: var(--primary); }

/* ── Bottom Nav ── */
.bottom-nav {
    display: flex;
    gap: 8px;
    padding: 12px 0;
    margin-top: auto;
}

.bottom-nav .btn {
    flex: 1;
    font-size: 0.85rem;
    padding: 10px 12px;
}

/* ── Admin ── */
.admin-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.stat-card {
    background: white;
    border-radius: 12px;
    padding: 16px;
    text-align: center;
    box-shadow: var(--shadow);
}

.stat-card .num {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary);
}

.stat-card .label {
    font-size: 0.85rem;
    color: var(--text-light);
    margin-top: 4px;
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

th, td {
    padding: 10px 8px;
    text-align: left;
    border-bottom: 1px solid #EEE;
}

th { font-weight: 600; color: var(--text-light); }

/* ── Rewards Shop ── */
.reward-grid {
    display: grid;
    gap: 12px;
}

.reward-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 14px 16px;
    background: white;
    border-radius: 12px;
    box-shadow: var(--shadow);
}

.reward-item .name { font-weight: 600; }
.reward-item .cost { color: var(--warning); font-weight: 600; }
.reward-item .desc { font-size: 0.85rem; color: var(--text-light); }

/* ── Dictation (print) ── */
.dictation-page {
    max-width: 800px;
    margin: 0 auto;
    padding: 40px;
}

.dictation-page h1 {
    text-align: center;
    font-size: 1.4rem;
    margin-bottom: 8px;
}

.dictation-page .info {
    text-align: center;
    color: var(--text-light);
    margin-bottom: 32px;
}

.dictation-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px 40px;
}

.dictation-word {
    padding: 8px 0;
    border-bottom: 1px dashed #DDD;
}

.dictation-word .chinese { font-size: 1.1rem; font-weight: 500; }
.dictation-word .phonetic { font-size: 0.85rem; color: #999; }
.dictation-word .blank { margin-top: 4px; font-size: 0.9rem; color: #CCC; }

/* ── Animations ── */
@keyframes pop {
    0% { transform: scale(1); }
    50% { transform: scale(1.15); }
    100% { transform: scale(1); }
}

.pop { animation: pop 0.3s ease; }

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

.shake { animation: shake 0.4s ease; }

/* ── Responsive ── */
@media (max-width: 480px) {
    .container, .page { padding: 12px; }
    .word-display .word { font-size: 2rem; }
    .btn-lg { padding: 14px 24px; font-size: 1.1rem; }
    .user-grid { gap: 12px; }
    .user-card { padding: 18px 12px; }
    .user-card .avatar { font-size: 2.5rem; }
    .dictation-grid { grid-template-columns: 1fr; }
    .admin-grid { grid-template-columns: 1fr; }
}

/* Print styles for dictation */
@media print {
    body { background: white; }
    .no-print { display: none !important; }
    .dictation-page { padding: 20px; }
    .dictation-word .blank { color: transparent; }
}