/* ========================================
   单词消消乐 - 统一样式表
   模块: base | index | game | admin
   Liquid Glass 风格 · 触摸屏优化
   ======================================== */

/* ============ BASE 基础公共 ============ */
* {
    box-sizing: border-box;
    user-select: none;
    -webkit-tap-highlight-color: transparent;
}

body {
    margin: 0;
    font-family: 'Segoe UI', 'Poppins', 'Roboto', 'Noto Sans', system-ui, -apple-system, BlinkMacSystemFont, 'Helvetica Neue', sans-serif;
    background: linear-gradient(145deg, #1a472a 0%, #0e2a1a 100%);
    color: rgba(255,255,255,0.85);
}

/* Liquid Glass 通用 */
.glass {
    background: linear-gradient(
        135deg,
        rgba(255,255,255,0.12) 0%,
        rgba(255,255,255,0.04) 40%,
        rgba(255,255,255,0.08) 100%
    );
    backdrop-filter: blur(40px) saturate(1.8) brightness(1.1);
    -webkit-backdrop-filter: blur(40px) saturate(1.8) brightness(1.1);
    border: 1px solid rgba(255,255,255,0.18);
    border-top-color: rgba(255,255,255,0.35);
    border-left-color: rgba(255,255,255,0.25);
    border-radius: 24px;
    box-shadow:
        0 8px 32px rgba(0,0,0,0.2),
        inset 0 1px 0 rgba(255,255,255,0.15),
        inset 0 -1px 0 rgba(255,255,255,0.05);
    position: relative;
    overflow: hidden;
}
.glass::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 50%;
    background: linear-gradient(
        180deg,
        rgba(255,255,255,0.08) 0%,
        transparent 100%
    );
    border-radius: 24px 24px 0 0;
    pointer-events: none;
}

/* 输入框通用 */
.input-dark {
    padding: 12px 16px;
    border-radius: 14px;
    border: 1px solid rgba(255,255,255,0.15);
    background: rgba(0,0,0,0.25);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    color: rgba(255,255,255,0.9);
    font-size: 14px;
    outline: none;
    box-shadow: inset 0 1px 3px rgba(0,0,0,0.2);
}
.input-dark::placeholder { color: rgba(255,255,255,0.3); }
.input-dark:focus {
    border-color: rgba(255,255,255,0.3);
    box-shadow: inset 0 1px 3px rgba(0,0,0,0.2), 0 0 0 2px rgba(255,255,255,0.08);
}

/* 按钮通用 */
.btn {
    padding: 10px 20px;
    border-radius: 14px;
    border: 1px solid rgba(255,255,255,0.18);
    border-top-color: rgba(255,255,255,0.3);
    background: linear-gradient(
        180deg,
        rgba(255,255,255,0.14) 0%,
        rgba(255,255,255,0.06) 100%
    );
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    color: rgba(255,255,255,0.85);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    letter-spacing: 0.5px;
    box-shadow:
        0 2px 8px rgba(0,0,0,0.15),
        inset 0 1px 0 rgba(255,255,255,0.2);
}
.btn:active {
    transform: scale(0.97);
    box-shadow: 0 1px 4px rgba(0,0,0,0.2);
}
.btn-accent {
    background: linear-gradient(180deg, rgba(255,180,50,0.2) 0%, rgba(255,152,0,0.1) 100%);
    border-color: rgba(255,180,50,0.3);
    border-top-color: rgba(255,200,80,0.5);
}
.btn-danger {
    background: linear-gradient(180deg, rgba(244,67,54,0.2) 0%, rgba(244,67,54,0.1) 100%);
    border-color: rgba(244,67,54,0.3);
    border-top-color: rgba(244,100,100,0.5);
}
.btn-info {
    background: linear-gradient(180deg, rgba(33,150,243,0.2) 0%, rgba(33,150,243,0.1) 100%);
    border-color: rgba(33,150,243,0.3);
    border-top-color: rgba(80,170,255,0.5);
}

/* Toast */
.toast {
    position: fixed;
    top: 20px;
    right: 20px;
    padding: 14px 24px;
    border-radius: 16px;
    color: white;
    font-weight: 500;
    z-index: 1000;
    transform: translateX(150%);
    transition: transform 0.3s ease;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255,255,255,0.15);
    font-size: 0.9rem;
    box-shadow: 0 8px 24px rgba(0,0,0,0.3);
}
.toast.show { transform: translateX(0); }
.toast.success { background: rgba(76,175,80,0.85); }
.toast.error { background: rgba(244,67,54,0.85); }
.toast.info { background: rgba(33,150,243,0.85); }

/* 弹窗通用 */
.modal-overlay {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.5);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9998;
}
.modal-box {
    background: linear-gradient(135deg, rgba(26,71,42,0.85) 0%, rgba(14,42,26,0.9) 100%);
    backdrop-filter: blur(40px) saturate(1.5);
    -webkit-backdrop-filter: blur(40px) saturate(1.5);
    border: 1px solid rgba(255,255,255,0.2);
    border-top-color: rgba(255,255,255,0.35);
    border-radius: 28px;
    padding: 32px;
    width: 420px;
    max-width: 90vw;
    box-shadow:
        0 20px 60px rgba(0,0,0,0.4),
        inset 0 1px 0 rgba(255,255,255,0.15);
}
.modal-box h3 {
    color: rgba(255,255,255,0.9);
    margin: 0 0 24px 0;
    font-size: 1.2rem;
    text-align: center;
    font-weight: 300;
    letter-spacing: 2px;
}
.modal-form {
    display: flex;
    flex-direction: column;
    gap: 14px;
    margin-bottom: 24px;
}
.modal-form label {
    color: rgba(255,255,255,0.5);
    font-size: 0.85rem;
    font-weight: 500;
    letter-spacing: 1px;
}
.modal-form select {
    padding: 12px 16px;
    border-radius: 14px;
    border: 1px solid rgba(255,255,255,0.15);
    background: rgba(0,0,0,0.25);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    color: rgba(255,255,255,0.9);
    font-size: 15px;
    outline: none;
    box-shadow: inset 0 1px 3px rgba(0,0,0,0.2);
}
.modal-form select:focus {
    border-color: rgba(255,255,255,0.3);
}
.modal-form select option {
    background: #1a472a;
    color: rgba(255,255,255,0.8);
}
.modal-actions {
    display: flex;
    gap: 12px;
    justify-content: flex-end;
}
.modal-actions button {
    padding: 10px 24px;
    border-radius: 14px;
    border: 1px solid rgba(255,255,255,0.15);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    letter-spacing: 1px;
}
.modal-actions button:first-child {
    background: rgba(255,255,255,0.06);
    color: rgba(255,255,255,0.6);
}
.modal-actions button:last-child {
    background: linear-gradient(180deg, rgba(255,255,255,0.14) 0%, rgba(255,255,255,0.06) 100%);
    color: rgba(255,255,255,0.9);
    border-top-color: rgba(255,255,255,0.3);
}

/* 分页 */
.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    padding: 16px 0 8px;
    flex-wrap: wrap;
}
.page-info {
    color: rgba(255,255,255,0.4);
    font-size: 13px;
    letter-spacing: 0.5px;
}
.page-buttons { display: flex; gap: 8px; }
.page-buttons button {
    padding: 8px 20px;
    border-radius: 14px;
    border: 1px solid rgba(255,255,255,0.15);
    border-top-color: rgba(255,255,255,0.3);
    background: linear-gradient(180deg, rgba(255,255,255,0.1) 0%, rgba(255,255,255,0.04) 100%);
    color: rgba(255,255,255,0.6);
    font-size: 13px;
    cursor: pointer;
    letter-spacing: 1px;
}
.page-buttons button:active { transform: scale(0.97); }

/* 返回链接 */
.back-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: rgba(255,255,255,0.5);
    text-decoration: none;
    font-size: 0.9rem;
    margin-bottom: 16px;
    padding: 8px 16px;
    background: linear-gradient(135deg, rgba(255,255,255,0.08) 0%, rgba(255,255,255,0.03) 100%);
    border-radius: 14px;
    border: 1px solid rgba(255,255,255,0.12);
    letter-spacing: 0.5px;
}

/* ============ INDEX 目录页 ============ */
.index-body {
    min-height: 100vh;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 24px 16px 40px;
    background: linear-gradient(145deg, #1a472a 0%, #0e2a1a 100%);
    background-attachment: fixed;
}

/* 页面切换动画 */
.nav-container {
    width: 100%;
    max-width: 800px;
    position: relative;
}
.nav-page {
    animation: pageEnter 0.35s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}
@keyframes pageEnter {
    from {
        opacity: 0;
        transform: translateY(30px) scale(0.96);
        filter: blur(4px);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
        filter: blur(0);
    }
}
.nav-page-exit {
    animation: pageExit 0.25s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}
@keyframes pageExit {
    from {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
    to {
        opacity: 0;
        transform: translateY(-20px) scale(0.98);
    }
}
.page-title {
    font-size: 1.6rem;
    font-weight: 300;
    color: rgba(255,255,255,0.9);
    letter-spacing: 4px;
    text-transform: uppercase;
    margin-bottom: 8px;
    margin-top: 20px;
}
.page-subtitle {
    font-size: 0.85rem;
    color: rgba(255,255,255,0.4);
    letter-spacing: 2px;
    margin-bottom: 32px;
}
.breadcrumb {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-bottom: 28px;
    flex-wrap: wrap;
    justify-content: center;
}
.breadcrumb-item {
    color: rgba(255,255,255,0.5);
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    padding: 6px 14px;
    border-radius: 20px;
    background: linear-gradient(135deg, rgba(255,255,255,0.08) 0%, rgba(255,255,255,0.03) 100%);
    border: 1px solid rgba(255,255,255,0.1);
}
.breadcrumb-item.active {
    color: rgba(255,255,255,0.9);
    background: linear-gradient(135deg, rgba(255,255,255,0.12) 0%, rgba(255,255,255,0.06) 100%);
    border-color: rgba(255,255,255,0.2);
    cursor: default;
}
.breadcrumb-sep {
    color: rgba(255,255,255,0.2);
    font-size: 0.8rem;
}
.grade-card, .semester-card {
    padding: 20px 24px;
    margin-bottom: 12px;
    cursor: pointer;
    background: rgba(255,255,255,0.02);
    backdrop-filter: blur(80px) saturate(2.5);
    -webkit-backdrop-filter: blur(80px) saturate(2.5);
    border: 1px solid rgba(255,255,255,0.15);
    border-top-color: rgba(255,255,255,0.4);
    border-left-color: rgba(255,255,255,0.25);
    border-radius: 24px;
    box-shadow:
        0 4px 24px rgba(0,0,0,0.1),
        inset 0 1px 0 rgba(255,255,255,0.2),
        inset 0 -1px 0 rgba(255,255,255,0.05);
    position: relative;
    overflow: hidden;
    transition: all 0.2s ease;
}
.grade-card::before, .semester-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 55%;
    background: linear-gradient(
        180deg,
        rgba(255,255,255,0.12) 0%,
        rgba(255,255,255,0.04) 60%,
        transparent 100%
    );
    border-radius: 24px 24px 0 0;
    pointer-events: none;
}
.grade-card::after, .semester-card::after {
    content: '';
    position: absolute;
    bottom: 0; left: 10%; right: 10%;
    height: 1px;
    background: linear-gradient(
        90deg,
        transparent 0%,
        rgba(255,255,255,0.15) 50%,
        transparent 100%
    );
    pointer-events: none;
}
.grade-card:active, .semester-card:active {
    transform: scale(0.97);
    background: rgba(255,255,255,0.04);
}
.grade-card-title, .semester-card-title {
    font-size: 1.15rem;
    font-weight: 500;
    color: rgba(255,255,255,0.9);
    margin-bottom: 4px;
    display: flex;
    align-items: center;
    gap: 12px;
    letter-spacing: 1px;
}
.grade-card-title .emoji, .semester-card-title .emoji {
    font-size: 1.3rem;
    opacity: 0.8;
}
.grade-card-desc, .semester-card-desc {
    font-size: 0.8rem;
    color: rgba(255,255,255,0.35);
    font-weight: 400;
    padding-left: 36px;
    letter-spacing: 0.5px;
}
.unit-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
    gap: 12px;
}
.unit-card {
    padding: 20px 12px;
    text-align: center;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    background: rgba(255,255,255,0.02);
    backdrop-filter: blur(80px) saturate(2.5);
    -webkit-backdrop-filter: blur(80px) saturate(2.5);
    border: 1px solid rgba(255,255,255,0.15);
    border-top-color: rgba(255,255,255,0.4);
    border-left-color: rgba(255,255,255,0.25);
    border-radius: 24px;
    box-shadow:
        0 4px 24px rgba(0,0,0,0.1),
        inset 0 1px 0 rgba(255,255,255,0.2),
        inset 0 -1px 0 rgba(255,255,255,0.05);
    transition: all 0.2s ease;
}
.unit-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 55%;
    background: linear-gradient(
        180deg,
        rgba(255,255,255,0.12) 0%,
        rgba(255,255,255,0.04) 60%,
        transparent 100%
    );
    border-radius: 24px 24px 0 0;
    pointer-events: none;
}
.unit-card::after {
    content: '';
    position: absolute;
    bottom: 0; left: 10%; right: 10%;
    height: 1px;
    background: linear-gradient(
        90deg,
        transparent 0%,
        rgba(255,255,255,0.15) 50%,
        transparent 100%
    );
    pointer-events: none;
}
.unit-card:active {
    transform: scale(0.96);
    background: rgba(255,255,255,0.04);
}
.unit-card .unit-num {
    font-size: 1.8rem;
    font-weight: 200;
    color: rgba(255,255,255,0.85);
    line-height: 1;
    margin-bottom: 8px;
}
.unit-card .unit-label {
    font-size: 0.75rem;
    font-weight: 500;
    color: rgba(255,255,255,0.4);
    letter-spacing: 1px;
    text-transform: uppercase;
}
.unit-card .unit-words {
    font-size: 0.7rem;
    color: rgba(255,255,255,0.25);
    margin-top: 6px;
    letter-spacing: 0.5px;
}
.back-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: rgba(255,255,255,0.6);
    border: 1px solid rgba(255,255,255,0.12);
    padding: 10px 24px;
    border-radius: 14px;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    margin-bottom: 24px;
    letter-spacing: 0.5px;
    background: linear-gradient(135deg, rgba(255,255,255,0.08) 0%, rgba(255,255,255,0.03) 100%);
}
.section-title {
    font-size: 0.9rem;
    font-weight: 400;
    color: rgba(255,255,255,0.4);
    margin-bottom: 16px;
    padding-left: 4px;
    letter-spacing: 2px;
    text-transform: uppercase;
}

/* ============ GAME 游戏页 ============ */
.game-body {
    height: 100vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}
.game-wrapper {
    width: 100%;
    max-width: 1600px;
    height: 100vh;
    background: rgba(0,0,0,0.1);
    padding: 8px 20px 16px 20px;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    position: relative;
}
.game-header {
    text-align: center;
    margin-bottom: 8px;
    flex-shrink: 0;
    margin-top: -4px;
}
.game-title {
    font-size: 1.4rem;
    font-weight: 300;
    color: rgba(255,255,255,0.9);
    letter-spacing: 4px;
    text-transform: uppercase;
    display: inline-block;
    padding: 8px 32px;
}
.game-container {
    display: flex;
    flex-direction: row;
    gap: 16px;
    flex: 1;
    min-height: 0;
    overflow: hidden;
}
.game-side {
    flex: 1;
    padding: 12px 14px;
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
}
.game-side.loser-overlay {
    opacity: 0.5;
    filter: grayscale(0.5);
}
.side-header {
    text-align: center;
    font-size: 1rem;
    font-weight: 500;
    margin-bottom: 8px;
    padding: 8px;
    background: linear-gradient(135deg, rgba(255,255,255,0.1) 0%, rgba(255,255,255,0.04) 100%);
    border-radius: 16px;
    color: rgba(255,255,255,0.8);
    border: 1px solid rgba(255,255,255,0.12);
    flex-shrink: 0;
    letter-spacing: 1px;
}
.player-name {
    background: rgba(255,255,255,0.1);
    display: inline-block;
    padding: 4px 20px;
    border-radius: 12px;
    color: rgba(255,255,255,0.7);
    font-size: 0.9rem;
    letter-spacing: 1px;
}
.progress-info {
    text-align: center;
    margin: 4px 0 8px;
    font-weight: 500;
    color: rgba(255,255,255,0.6);
    background: rgba(255,255,255,0.05);
    padding: 6px;
    border-radius: 12px;
    font-size: 0.8rem;
    flex-shrink: 0;
    letter-spacing: 0.5px;
    border: 1px solid rgba(255,255,255,0.08);
}
.double-columns {
    display: flex;
    gap: 10px;
    flex: 1;
    min-height: 0;
}
.game-column {
    flex: 1;
    background: linear-gradient(135deg, rgba(255,255,255,0.06) 0%, rgba(255,255,255,0.02) 100%);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: 20px;
    padding: 8px 6px;
    border: 1px solid rgba(255,255,255,0.1);
    display: flex;
    flex-direction: column;
}
.column-title {
    font-size: 0.8rem;
    font-weight: 500;
    color: rgba(255,255,255,0.4);
    margin-bottom: 8px;
    text-align: center;
    flex-shrink: 0;
    letter-spacing: 2px;
    text-transform: uppercase;
}
.card-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 8px;
    flex: 1;
}
.word-card {
    background: linear-gradient(
        135deg,
        rgba(255,255,255,0.1) 0%,
        rgba(255,255,255,0.04) 50%,
        rgba(255,255,255,0.07) 100%
    );
    backdrop-filter: blur(20px) saturate(1.5);
    -webkit-backdrop-filter: blur(20px) saturate(1.5);
    border-radius: 16px;
    text-align: center;
    font-weight: 600;
    cursor: pointer;
    border: 1px solid rgba(255,255,255,0.15);
    border-top-color: rgba(255,255,255,0.25);
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 70px;
    font-size: 1.2rem;
    line-height: 1.4;
    word-break: break-word;
    padding: 12px 8px;
    color: rgba(255,255,255,0.85);
    letter-spacing: 0.5px;
    box-shadow:
        0 2px 8px rgba(0,0,0,0.1),
        inset 0 1px 0 rgba(255,255,255,0.12);
    position: relative;
    overflow: hidden;
}
.word-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 50%;
    background: linear-gradient(180deg, rgba(255,255,255,0.06) 0%, transparent 100%);
    border-radius: 16px 16px 0 0;
    pointer-events: none;
}
.eng-card { font-family: 'Segoe UI', 'Courier New', monospace; }
.word-card.selected {
    background: linear-gradient(135deg, rgba(255,230,180,0.25) 0%, rgba(255,200,100,0.1) 100%);
    border-color: rgba(243,156,18,0.5);
    border-top-color: rgba(255,200,100,0.7);
    transform: scale(0.98);
}
.word-card.matched { display: none; }
.shake { animation: shakeEffect 0.3s ease-in-out 0s 2; }
@keyframes shakeEffect {
    0% { transform: translateX(0px); }
    25% { transform: translateX(-5px); }
    75% { transform: translateX(5px); }
    100% { transform: translateX(0px); }
}
.side-error-toast {
    position: absolute;
    top: 45%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: rgba(211,47,47,0.9);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    color: white;
    padding: 10px 24px;
    border-radius: 16px;
    font-weight: 600;
    font-size: 0.95rem;
    z-index: 1100;
    box-shadow: 0 8px 24px rgba(0,0,0,0.4);
    white-space: nowrap;
    text-align: center;
    animation: floatUp 0.9s ease forwards;
    pointer-events: none;
    border: 1px solid rgba(255,255,255,0.15);
}
@keyframes floatUp {
    0% { opacity: 1; transform: translate(-50%, -50%) translateY(0); }
    80% { opacity: 1; }
    100% { opacity: 0; transform: translate(-50%, -50%) translateY(-50px); visibility: hidden; }
}
.result-card-on-side {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    backdrop-filter: blur(40px) saturate(1.5);
    -webkit-backdrop-filter: blur(40px) saturate(1.5);
    border-radius: 32px;
    padding: 40px 20px;
    text-align: center;
    z-index: 200;
    width: 85%;
    max-width: 400px;
    height: auto;
    min-height: 300px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    box-shadow: 0 30px 60px rgba(0,0,0,0.6);
    pointer-events: none;
    border: 1px solid rgba(255,255,255,0.2);
    animation: fadeInScale 0.4s ease-out;
}
@keyframes fadeInScale {
    from { opacity: 0; transform: translate(-50%, -50%) scale(0.8); }
    to { opacity: 1; transform: translate(-50%, -50%) scale(1); }
}
.win-card {
    background: linear-gradient(135deg, rgba(255,68,68,0.85) 0%, rgba(200,40,40,0.9) 100%);
    border: 1px solid rgba(255,204,0,0.4);
}
.win-card .result-text {
    font-size: 5rem;
    font-weight: 900;
    color: #ffdd77;
    text-shadow: 0 4px 20px rgba(0,0,0,0.4);
    letter-spacing: 8px;
}
.win-card .time-text {
    font-size: 1.2rem;
    margin-top: 12px;
    font-weight: 500;
    color: rgba(255,255,255,0.7);
}
.lose-card {
    background: linear-gradient(135deg, rgba(40,40,40,0.9) 0%, rgba(20,20,20,0.95) 100%);
    border: 1px solid rgba(255,102,102,0.3);
}
.lose-card .result-text {
    font-size: 5rem;
    font-weight: 900;
    color: #ff4444;
    text-shadow: 0 4px 20px rgba(0,0,0,0.4);
    letter-spacing: 8px;
}
.lose-card .time-text {
    font-size: 1.2rem;
    margin-top: 12px;
    font-weight: 500;
    color: rgba(255,255,255,0.6);
}

/* 图形星级 */
.star-graph {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    margin: 16px 0 8px;
}
.star-item {
    display: flex;
    align-items: center;
    justify-content: center;
    filter: drop-shadow(0 0 6px rgba(255,215,0,0.3));
}
.score-num {
    font-size: 2rem;
    font-weight: 200;
    color: #ffd700;
    letter-spacing: 2px;
    margin: 4px 0;
}
.result-detail {
    font-size: 1rem;
    font-weight: 400;
    color: rgba(255,255,255,0.6);
    margin-top: 8px;
}
.result-msg {
    font-size: 1rem;
    font-weight: 400;
    color: rgba(255,255,255,0.8);
    margin-top: 12px;
    padding: 0 12px;
    line-height: 1.5;
}
.global-reset-btn {
    position: fixed;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(180deg, rgba(229,57,53,0.95) 0%, rgba(200,40,40,0.9) 100%);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255,255,255,0.2);
    border-top-color: rgba(255,255,255,0.35);
    padding: 16px 48px;
    font-size: 1.4rem;
    font-weight: 600;
    border-radius: 24px;
    color: white;
    cursor: pointer;
    box-shadow: 0 12px 30px rgba(0,0,0,0.4);
    z-index: 1000;
    letter-spacing: 2px;
    animation: btnPulse 0.5s ease-out;
}
@keyframes btnPulse {
    0% { transform: translateX(-50%) scale(0.9); opacity: 0; }
    80% { transform: translateX(-50%) scale(1.05); }
    100% { transform: translateX(-50%) scale(1); opacity: 1; }
}
.global-reset-btn:active { transform: translateX(-50%) scale(0.96); }

/* ============ ADMIN 管理后台 ============ */
.admin-body {
    min-height: 100vh;
    padding: 24px 16px 40px;
}
.admin-container { max-width: 1200px; margin: 0 auto; }
.admin-h1 {
    text-align: center;
    font-size: 1.4rem;
    font-weight: 300;
    color: rgba(255,255,255,0.9);
    margin-bottom: 32px;
    padding: 12px;
    letter-spacing: 4px;
    text-transform: uppercase;
}

/* 登录 */
.login-overlay {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: linear-gradient(145deg, #1a472a 0%, #0e2a1a 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}
.login-box {
    padding: 48px 40px 40px;
    width: 380px;
    max-width: 90vw;
    text-align: center;
}
.login-icon {
    font-size: 3rem;
    margin-bottom: 16px;
    opacity: 0.8;
}
.login-box h2 {
    color: rgba(255,255,255,0.9);
    font-size: 1.3rem;
    font-weight: 300;
    margin-bottom: 8px;
    letter-spacing: 2px;
}
.login-subtitle {
    color: rgba(255,255,255,0.35);
    font-size: 0.85rem;
    margin-bottom: 32px;
    letter-spacing: 1px;
}
.login-form { display: flex; flex-direction: column; gap: 12px; }
.login-form input {
    padding: 14px 18px;
    border-radius: 14px;
    border: 1px solid rgba(255,255,255,0.15);
    background: rgba(0,0,0,0.25);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    color: rgba(255,255,255,0.9);
    font-size: 15px;
    outline: none;
    box-shadow: inset 0 1px 3px rgba(0,0,0,0.2);
}
.login-form input::placeholder { color: rgba(255,255,255,0.3); }
.login-form input:focus {
    border-color: rgba(255,255,255,0.3);
}
.login-form button {
    padding: 14px;
    border-radius: 14px;
    border: 1px solid rgba(255,255,255,0.18);
    border-top-color: rgba(255,255,255,0.3);
    background: linear-gradient(180deg, rgba(255,255,255,0.12) 0%, rgba(255,255,255,0.05) 100%);
    color: rgba(255,255,255,0.9);
    font-size: 15px;
    font-weight: 500;
    cursor: pointer;
    margin-top: 4px;
    letter-spacing: 2px;
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.15);
}
.login-form button:active { transform: scale(0.98); }
.login-error {
    color: #ff6b6b;
    font-size: 0.85rem;
    display: none;
    padding: 4px 0;
}

/* 工具栏/面板 */
.panel {
    padding: 16px;
    margin-bottom: 20px;
}
.panel-inline {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    align-items: center;
}
.panel label {
    font-weight: 500;
    color: rgba(255,255,255,0.5);
    font-size: 0.85rem;
    letter-spacing: 1px;
}

/* 统计 */
.stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 12px;
    margin-bottom: 20px;
}
.stat-card {
    padding: 20px;
    text-align: center;
}
.stat-card .number {
    font-size: 2rem;
    font-weight: 200;
    color: rgba(255,255,255,0.9);
}
.stat-card .label {
    font-size: 0.8rem;
    color: rgba(255,255,255,0.4);
    margin-top: 6px;
    letter-spacing: 1px;
    text-transform: uppercase;
}

/* 表格 */
.word-table-wrapper {
    overflow: hidden;
    margin-bottom: 20px;
}
.word-table {
    width: 100%;
    border-collapse: collapse;
}
.word-table th {
    background: rgba(0,0,0,0.2);
    padding: 14px 16px;
    text-align: left;
    font-weight: 500;
    color: rgba(255,255,255,0.5);
    font-size: 0.8rem;
    letter-spacing: 1px;
    text-transform: uppercase;
}
.word-table td {
    padding: 12px 16px;
    border-bottom: 1px solid rgba(255,255,255,0.04);
    font-size: 0.95rem;
    color: rgba(255,255,255,0.75);
}
.word-table tr.editing { background: rgba(76,175,80,0.08); }
.word-table .actions { display: flex; gap: 6px; }
.word-table .actions button {
    padding: 6px 12px;
    border-radius: 10px;
    border: 1px solid rgba(255,255,255,0.12);
    font-size: 0.8rem;
    cursor: pointer;
    background: linear-gradient(180deg, rgba(255,255,255,0.1) 0%, rgba(255,255,255,0.04) 100%);
    color: rgba(255,255,255,0.7);
}
.word-table .actions button:active { transform: scale(0.95); }
.word-table .index {
    color: rgba(255,255,255,0.4);
    font-weight: 500;
    width: 50px;
}

/* 表单 */
.add-form {
    display: grid;
    grid-template-columns: 1fr 1fr auto;
    gap: 12px;
    padding: 16px;
    margin-bottom: 20px;
    align-items: end;
}
.add-form button { padding: 12px 24px; }

.batch-import {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 12px;
    padding: 16px;
    margin-bottom: 20px;
    align-items: start;
}
.batch-import textarea {
    width: 100%;
    min-height: 120px;
    padding: 12px 16px;
    border-radius: 14px;
    border: 1px solid rgba(255,255,255,0.15);
    background: rgba(0,0,0,0.25);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    color: rgba(255,255,255,0.8);
    font-size: 14px;
    outline: none;
    resize: vertical;
    font-family: inherit;
    box-shadow: inset 0 1px 3px rgba(0,0,0,0.2);
}
.batch-import textarea::placeholder { color: rgba(255,255,255,0.3); }
.batch-import textarea:focus { border-color: rgba(255,255,255,0.3); }
.batch-import button {
    padding: 12px 24px;
    border: 1px solid rgba(255,180,50,0.3);
    border-top-color: rgba(255,200,80,0.5);
    background: linear-gradient(180deg, rgba(255,180,50,0.2) 0%, rgba(255,152,0,0.1) 100%);
    white-space: nowrap;
}
.batch-import button:active { transform: scale(0.97); }

/* 空状态 */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: rgba(255,255,255,0.3);
}
.empty-state .icon { font-size: 3rem; margin-bottom: 12px; opacity: 0.5; }
.empty-state .text { font-size: 1rem; letter-spacing: 1px; }

/* ============ 响应式 ============ */
@media (max-width: 800px) {
    .word-card {
        font-size: 1rem;
        padding: 8px 4px;
    }
    .game-title {
        font-size: 1.1rem;
        letter-spacing: 2px;
    }
    .win-card .result-text, .lose-card .result-text { font-size: 3rem; }
    .win-card .time-text { font-size: 1.2rem; }
    .result-card-on-side {
        padding: 25px 15px;
        min-height: 220px;
        width: 90%;
    }
    .global-reset-btn {
        padding: 12px 32px;
        font-size: 1.2rem;
    }
}

@media (max-width: 768px) {
    .panel-inline { flex-direction: column; align-items: stretch; }
    .panel-inline select, .panel-inline input, .panel-inline button { width: 100%; }
    .add-form { grid-template-columns: 1fr; }
    .word-table th, .word-table td { padding: 10px 8px; font-size: 0.85rem; }
    .word-table .actions { flex-direction: column; }
}

@media (max-width: 600px) {
    .page-title {
        font-size: 1.3rem;
        letter-spacing: 2px;
    }
    .unit-grid {
        grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
        gap: 10px;
    }
    .unit-card { padding: 16px 8px; }
    .unit-card .unit-num { font-size: 1.5rem; }
    .game-container { gap: 10px; }
    .double-columns { gap: 8px; }
}