/* ============================================================
   单词竞技场 - 游戏化 UI 框架 v3.0
   全新设计语言：静态光效 · 脉冲呼吸 · 渐变描边
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@400;500;700;900&family=Rajdhani:wght@400;500;600;700&display=swap');

:root {
    --font-game: 'Rajdhani', 'Microsoft YaHei', sans-serif;
    --font-display: 'Orbitron', 'Microsoft YaHei', sans-serif;

    --bg-dark: #060614;
    --bg-mid: #0d0d24;
    --bg-card: rgba(15, 18, 45, 0.92);
    --bg-card-hover: rgba(25, 28, 60, 0.95);
    --bg-glass: rgba(15, 18, 45, 0.6);

    --primary: #6c5ce7;
    --primary-light: #a29bfe;
    --primary-dark: #4834d4;
    --accent: #00cec9;
    --accent-light: #81ecec;
    --gold: #ffd700;
    --gold-dark: #e6a700;
    --danger: #ff4757;
    --success: #2ed573;
    --warning: #ffa502;
    --info: #54a0ff;

    --quality-white: #ffffff;
    --quality-green: #2ed573;
    --quality-blue: #54a0ff;
    --quality-purple: #a55eea;
    --quality-orange: #ff9f43;
    --quality-red: #ee5253;

    --text: #e0e8ff;
    --text-dim: #8892b0;
    --text-bright: #ffffff;
    --border: rgba(108, 92, 231, 0.2);
    --border-bright: rgba(108, 92, 231, 0.4);

    --radius: 16px;
    --radius-sm: 10px;
    --radius-lg: 24px;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
    --shadow-glow: 0 0 30px rgba(108, 92, 231, 0.3);
    --shadow-gold: 0 0 20px rgba(255, 215, 0, 0.3);

    --ease-out-quart: cubic-bezier(0.25, 1, 0.5, 1);
    --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
    --ease-bounce: cubic-bezier(0.68, -0.55, 0.27, 1.55);
}

/* ============================================================
   全局基础
   ============================================================ */
body {
    font-family: var(--font-game);
    background: var(--bg-dark) !important;
    overflow-x: hidden;
}

body::before {
    content: '';
    position: fixed;
    inset: 0;
    background:
        radial-gradient(ellipse at 20% 0%, rgba(108, 92, 231, 0.12) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 100%, rgba(0, 206, 201, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 50%, rgba(255, 215, 0, 0.03) 0%, transparent 70%);
    pointer-events: none;
    z-index: 0;
}

body::after {
    content: '';
    position: fixed;
    inset: 0;
    background-image:
        linear-gradient(rgba(108, 92, 231, 0.025) 1px, transparent 1px),
        linear-gradient(90deg, rgba(108, 92, 231, 0.025) 1px, transparent 1px);
    background-size: 40px 40px;
    pointer-events: none;
    z-index: 0;
    animation: gridMove 30s linear infinite;
}

@keyframes gridMove {
    0% { background-position: 0 0; }
    100% { background-position: 40px 40px; }
}

/* ============================================================
   顶部导航/HUD
   ============================================================ */
.game-hud {
    position: sticky;
    top: 0;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 20px;
    background: linear-gradient(180deg, rgba(6, 6, 20, 0.98) 0%, rgba(6, 6, 20, 0.9) 100%);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.5);
}

.hud-back-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text);
    text-decoration: none;
    font-family: var(--font-display);
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.05em;
    transition: all 0.2s var(--ease-out-quart);
    cursor: pointer;
}

.hud-back-btn:hover {
    background: var(--primary);
    border-color: var(--primary-light);
    box-shadow: 0 0 15px rgba(108, 92, 231, 0.4);
    transform: translateX(-2px);
}

.hud-title {
    font-family: var(--font-display);
    font-size: 18px;
    font-weight: 900;
    letter-spacing: 0.08em;
    background: linear-gradient(135deg, var(--primary-light), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-transform: uppercase;
}

.hud-currency {
    display: flex;
    align-items: center;
    gap: 12px;
}

.hud-chip {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 4px 12px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 20px;
    font-family: var(--font-display);
    font-size: 13px;
    font-weight: 700;
}

.hud-chip.gold { color: var(--gold); border-color: rgba(255, 215, 0, 0.3); }
.hud-chip.coin { color: var(--accent); border-color: rgba(0, 206, 201, 0.3); }

/* ============================================================
   游戏按钮系统
   ============================================================ */
.btn-game {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 32px;
    font-family: var(--font-display);
    font-size: 14px;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: #fff;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    border: 1px solid var(--primary-light);
    border-radius: var(--radius-sm);
    cursor: pointer;
    overflow: hidden;
    transition: all 0.25s var(--ease-out-quart);
    box-shadow: 0 4px 15px rgba(108, 92, 231, 0.3);
}

.btn-game::before {
    content: '';
    position: absolute;
    top: 0; left: -100%;
    width: 100%; height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

.btn-game:hover::before { left: 100%; }
.btn-game:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(108, 92, 231, 0.5);
    border-color: var(--primary-light);
}

.btn-game:active { transform: translateY(0) scale(0.97); }

.btn-game.accent {
    background: linear-gradient(135deg, var(--accent) 0%, #019875 100%);
    border-color: var(--accent-light);
    box-shadow: 0 4px 15px rgba(0, 206, 201, 0.3);
}

.btn-game.gold {
    background: linear-gradient(135deg, var(--gold) 0%, var(--gold-dark) 100%);
    border-color: #fff3a0;
    color: #1a1a1a;
    box-shadow: 0 4px 15px rgba(255, 215, 0, 0.3);
}

.btn-game.danger {
    background: linear-gradient(135deg, var(--danger) 0%, #c0392b 100%);
    border-color: #ff6b7a;
    box-shadow: 0 4px 15px rgba(255, 71, 87, 0.3);
}

.btn-game.ghost {
    background: transparent;
    border: 1px solid var(--border-bright);
    color: var(--text);
    box-shadow: none;
}

.btn-game.ghost:hover {
    background: var(--bg-card);
    border-color: var(--primary-light);
}

.btn-game:disabled {
    opacity: 0.4;
    cursor: not-allowed;
    transform: none !important;
}

/* ============================================================
   头像框 - 静态光效，不再旋转
   ============================================================ */
.avatar-frame {
    position: relative;
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-display);
    font-size: 24px;
    font-weight: 900;
    color: var(--text-bright);
    overflow: hidden;
    transition: all 0.3s var(--ease-out-quart);
    box-shadow: 0 0 20px rgba(108, 92, 231, 0.3), inset 0 2px 4px rgba(255,255,255,0.1);
    border: 2px solid var(--primary-light);
}

.avatar-frame.vip {
    background: linear-gradient(135deg, var(--gold), var(--gold-dark));
    border-color: var(--gold);
    box-shadow: 0 0 25px rgba(255, 215, 0, 0.4), inset 0 2px 4px rgba(255,255,255,0.2);
}

.avatar-frame::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 50%;
    background: linear-gradient(135deg, transparent 40%, rgba(255,255,255,0.15) 50%, transparent 60%);
    pointer-events: none;
}

/* 头像框装饰 - 静态渐变光环 */
.avatar-halo {
    position: relative;
    display: inline-block;
}

.avatar-halo::before {
    content: '';
    position: absolute;
    inset: -6px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    opacity: 0.15;
    filter: blur(8px);
    z-index: -1;
    transition: opacity 0.3s;
}

.avatar-halo:hover::before {
    opacity: 0.3;
}

.avatar-halo.vip::before {
    background: linear-gradient(135deg, var(--gold), var(--warning));
    opacity: 0.2;
}

/* ============================================================
   等级徽章
   ============================================================ */
.level-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 28px;
    height: 28px;
    padding: 0 8px;
    background: linear-gradient(135deg, var(--gold), var(--gold-dark));
    border-radius: 6px;
    font-family: var(--font-display);
    font-size: 13px;
    font-weight: 900;
    color: #1a1a1a;
    box-shadow: 0 2px 8px rgba(255, 215, 0, 0.3);
}

.rank-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 12px;
    border-radius: 20px;
    font-family: var(--font-display);
    font-size: 12px;
    font-weight: 700;
    border: 1px solid;
}

.rank-bronze { background: rgba(205, 127, 50, 0.15); border-color: rgba(205, 127, 50, 0.4); color: #cd7f32; }
.rank-silver { background: rgba(192, 192, 192, 0.15); border-color: rgba(192, 192, 192, 0.4); color: #c0c0c0; }
.rank-gold { background: rgba(255, 215, 0, 0.15); border-color: rgba(255, 215, 0, 0.4); color: var(--gold); }
.rank-platinum { background: rgba(0, 206, 201, 0.15); border-color: rgba(0, 206, 201, 0.4); color: var(--accent); }
.rank-diamond { background: rgba(165, 94, 234, 0.15); border-color: rgba(165, 94, 234, 0.4); color: var(--quality-purple); }
.rank-master { background: rgba(255, 71, 87, 0.15); border-color: rgba(255, 71, 87, 0.4); color: var(--danger); }

/* ============================================================
   进度条系统 (HP/MP/XP)
   ============================================================ */
.progress-game {
    position: relative;
    width: 100%;
    height: 12px;
    background: rgba(0, 0, 0, 0.5);
    border: 1px solid var(--border);
    border-radius: 6px;
    overflow: hidden;
}

.progress-game .bar-fill {
    height: 100%;
    border-radius: 6px;
    transition: width 0.5s var(--ease-out-quart);
    position: relative;
    overflow: hidden;
}

.progress-game .bar-fill::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    animation: barShimmer 3s infinite;
}

@keyframes barShimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

.bar-fill.hp { background: linear-gradient(90deg, #ff4757, #ff6b81); }
.bar-fill.mp { background: linear-gradient(90deg, #54a0ff, #2ed573); }
.bar-fill.xp { background: linear-gradient(90deg, var(--primary), var(--accent)); }
.bar-fill.gold { background: linear-gradient(90deg, var(--gold-dark), var(--gold)); }

.progress-game .bar-label {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 10px;
    font-weight: 700;
    color: #fff;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.8);
    font-family: var(--font-display);
}

/* ============================================================
   属性面板
   ============================================================ */
.stat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(80px, 1fr));
    gap: 10px;
}

.stat-box {
    text-align: center;
    padding: 12px 8px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    transition: all 0.2s;
}

.stat-box:hover {
    border-color: var(--border-bright);
    transform: translateY(-2px);
}

.stat-box .stat-icon { font-size: 22px; margin-bottom: 4px; }
.stat-box .stat-value {
    font-family: var(--font-display);
    font-size: 18px;
    font-weight: 900;
    color: var(--text-bright);
}
.stat-box .stat-label { font-size: 11px; color: var(--text-dim); text-transform: uppercase; letter-spacing: 0.05em; }

/* ============================================================
   浮动伤害/治疗数字
   ============================================================ */
.float-text {
    position: absolute;
    font-family: var(--font-display);
    font-size: 24px;
    font-weight: 900;
    pointer-events: none;
    z-index: 999;
    animation: floatText 1.5s var(--ease-out-quart) forwards;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.8);
}

.float-text.damage { color: var(--danger); }
.float-text.heal { color: var(--success); }
.float-text.crit { color: var(--gold); font-size: 32px; }
.float-text.xp { color: var(--accent); }
.float-text.gold { color: var(--gold); }

@keyframes floatText {
    0% { transform: translateY(0) scale(0.5); opacity: 0; }
    20% { transform: translateY(-20px) scale(1.2); opacity: 1; }
    60% { transform: translateY(-40px) scale(1); opacity: 1; }
    100% { transform: translateY(-80px) scale(0.8); opacity: 0; }
}

/* ============================================================
   连击/Combo 显示
   ============================================================ */
.combo-indicator {
    position: fixed;
    top: 50%;
    right: 30px;
    transform: translateY(-50%) scale(0);
    z-index: 200;
    text-align: center;
    pointer-events: none;
    transition: transform 0.3s var(--ease-spring);
}

.combo-indicator.active { transform: translateY(-50%) scale(1); }

.combo-indicator .combo-number {
    font-family: var(--font-display);
    font-size: 48px;
    font-weight: 900;
    background: linear-gradient(135deg, var(--gold), var(--danger));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 0 20px rgba(255, 215, 0, 0.5);
    animation: comboPulse 0.5s var(--ease-spring);
}

.combo-indicator .combo-label {
    font-family: var(--font-display);
    font-size: 14px;
    font-weight: 700;
    color: var(--gold);
    letter-spacing: 0.1em;
}

@keyframes comboPulse {
    0% { transform: scale(0.5); }
    50% { transform: scale(1.3); }
    100% { transform: scale(1); }
}

/* ============================================================
   成就通知
   ============================================================ */
.achievement-notify {
    position: fixed;
    top: 20px;
    left: 50%;
    transform: translateX(-50%) translateY(-100px);
    z-index: 300;
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 24px;
    background: linear-gradient(135deg, rgba(15, 18, 45, 0.98), rgba(25, 28, 60, 0.98));
    border: 1px solid var(--gold);
    border-radius: var(--radius);
    box-shadow: 0 0 30px rgba(255, 215, 0, 0.3), 0 10px 40px rgba(0, 0, 0, 0.5);
    transition: transform 0.5s var(--ease-spring);
    max-width: 90vw;
}

.achievement-notify.show { transform: translateX(-50%) translateY(0); }

.achievement-notify .ach-icon {
    font-size: 32px;
    filter: drop-shadow(0 0 10px var(--gold));
}

.achievement-notify .ach-text {
    display: flex;
    flex-direction: column;
}

.achievement-notify .ach-title {
    font-family: var(--font-display);
    font-size: 11px;
    color: var(--gold);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.achievement-notify .ach-name {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-bright);
}

/* ============================================================
   游戏弹窗/结果框
   ============================================================ */
.game-modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 500;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s;
}

.game-modal-overlay.show {
    opacity: 1;
    pointer-events: auto;
}

.game-modal {
    position: relative;
    width: 90%;
    max-width: 420px;
    background: linear-gradient(180deg, var(--bg-mid) 0%, var(--bg-dark) 100%);
    border: 1px solid var(--border-bright);
    border-radius: var(--radius-lg);
    padding: 32px 24px;
    text-align: center;
    transform: scale(0.7);
    transition: transform 0.4s var(--ease-spring);
    box-shadow: 0 0 50px rgba(108, 92, 231, 0.3);
}

.game-modal-overlay.show .game-modal {
    transform: scale(1);
}

.game-modal .modal-icon {
    font-size: 56px;
    margin-bottom: 12px;
    display: inline-block;
    animation: modalIconPop 0.6s var(--ease-spring);
}

@keyframes modalIconPop {
    0% { transform: scale(0) rotate(-180deg); }
    60% { transform: scale(1.3) rotate(10deg); }
    100% { transform: scale(1) rotate(0); }
}

.game-modal .modal-title {
    font-family: var(--font-display);
    font-size: 22px;
    font-weight: 900;
    letter-spacing: 0.05em;
    margin-bottom: 16px;
    background: linear-gradient(135deg, var(--primary-light), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.game-modal .modal-body { margin-bottom: 20px; }

.game-modal .modal-stats {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
    margin: 16px 0;
}

.game-modal .modal-stat { text-align: center; }

.game-modal .modal-stat .stat-num {
    font-family: var(--font-display);
    font-size: 24px;
    font-weight: 900;
    color: var(--gold);
}

.game-modal .modal-stat .stat-name {
    font-size: 11px;
    color: var(--text-dim);
    text-transform: uppercase;
}

.game-modal .modal-actions {
    display: flex;
    gap: 12px;
    justify-content: center;
}

.game-modal.victory {
    border-color: var(--gold);
    box-shadow: 0 0 60px rgba(255, 215, 0, 0.4);
}

.game-modal.victory .modal-title {
    background: linear-gradient(135deg, var(--gold), var(--warning));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.game-modal.defeat {
    border-color: var(--danger);
    box-shadow: 0 0 60px rgba(255, 71, 87, 0.3);
}

.game-modal.defeat .modal-title {
    background: linear-gradient(135deg, var(--danger), #c0392b);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ============================================================
   金币飞行动画
   ============================================================ */
.coin-fly {
    position: fixed;
    font-size: 20px;
    pointer-events: none;
    z-index: 400;
    animation: coinFly 0.8s var(--ease-out-quart) forwards;
}

@keyframes coinFly {
    0% { transform: scale(0.5) rotate(0deg); opacity: 0; }
    20% { transform: scale(1.2) rotate(180deg); opacity: 1; }
    100% {
        transform: scale(0.8) rotate(720deg) translate(var(--fly-x, 0), var(--fly-y, -100px));
        opacity: 0;
    }
}

/* ============================================================
   屏幕震动
   ============================================================ */
.screen-shake { animation: screenShake 0.4s; }

@keyframes screenShake {
    0%, 100% { transform: translate(0, 0); }
    20% { transform: translate(-5px, 2px); }
    40% { transform: translate(5px, -2px); }
    60% { transform: translate(-3px, -1px); }
    80% { transform: translate(3px, 1px); }
}

/* ============================================================
   加载动画（不再使用旋转圆环）
   ============================================================ */
.game-loader {
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.game-loader .dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--primary);
    animation: loaderBounce 1.4s infinite ease-in-out both;
}

.game-loader .dot:nth-child(1) { animation-delay: -0.32s; }
.game-loader .dot:nth-child(2) { animation-delay: -0.16s; background: var(--accent); }
.game-loader .dot:nth-child(3) { animation-delay: 0; background: var(--gold); }

@keyframes loaderBounce {
    0%, 80%, 100% { transform: scale(0); }
    40% { transform: scale(1); }
}

/* 脉冲加载指示器 */
.loader-pulse {
    display: inline-block;
    width: 48px;
    height: 48px;
    position: relative;
}

.loader-pulse::before,
.loader-pulse::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 50%;
    background: var(--primary);
    opacity: 0.6;
    animation: pulseRing 1.5s ease-out infinite;
}

.loader-pulse::after {
    animation-delay: 0.75s;
    background: var(--accent);
}

@keyframes pulseRing {
    0% { transform: scale(0); opacity: 0.8; }
    100% { transform: scale(1); opacity: 0; }
}

/* ============================================================
   标签页/Tab 系统
   ============================================================ */
.game-tabs {
    display: flex;
    gap: 4px;
    padding: 4px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    overflow-x: auto;
}

.game-tab {
    flex: 1;
    padding: 8px 16px;
    text-align: center;
    font-family: var(--font-display);
    font-size: 13px;
    font-weight: 600;
    color: var(--text-dim);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s;
    white-space: nowrap;
    border: none;
    background: transparent;
}

.game-tab:hover { color: var(--text); }

.game-tab.active {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: #fff;
    box-shadow: 0 2px 10px rgba(108, 92, 231, 0.3);
}

/* ============================================================
   倒计时/计时器
   ============================================================ */
.game-timer {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 16px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 20px;
    font-family: var(--font-display);
    font-size: 16px;
    font-weight: 900;
    color: var(--text-bright);
}

.game-timer.warning {
    border-color: var(--warning);
    color: var(--warning);
    animation: timerPulse 0.5s infinite;
}

.game-timer.danger {
    border-color: var(--danger);
    color: var(--danger);
    animation: timerPulse 0.3s infinite;
}

@keyframes timerPulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

/* ============================================================
   Toast 通知
   ============================================================ */
.game-toast {
    position: fixed;
    bottom: 100px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    z-index: 350;
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    background: var(--bg-card);
    border: 1px solid var(--border-bright);
    border-radius: var(--radius);
    backdrop-filter: blur(20px);
    box-shadow: var(--shadow);
    font-size: 14px;
    transition: transform 0.3s var(--ease-spring);
    max-width: 90vw;
}

.game-toast.show { transform: translateX(-50%) translateY(0); }
.game-toast.success { border-color: var(--success); color: var(--success); }
.game-toast.error { border-color: var(--danger); color: var(--danger); }
.game-toast.gold { border-color: var(--gold); color: var(--gold); }

/* ============================================================
   空状态
   ============================================================ */
.empty-state {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-dim);
}

.empty-state .empty-icon {
    font-size: 48px;
    margin-bottom: 12px;
    opacity: 0.3;
    animation: emptyFloat 3s ease-in-out infinite;
}

@keyframes emptyFloat {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-8px); }
}

/* ============================================================
   通用卡片增强 - 覆盖已有类名
   ============================================================ */
.card, .equip-card, .deco-card, .mode-card, .hero-card, .room-item, .item-card {
    background: var(--bg-card) !important;
    border: 1px solid var(--border) !important;
    border-radius: var(--radius) !important;
    backdrop-filter: blur(10px) !important;
    transition: all 0.3s var(--ease-out-quart) !important;
    position: relative !important;
    overflow: hidden !important;
}

.card:hover, .equip-card:hover, .deco-card:hover, .mode-card:hover, .hero-card:hover, .room-item:hover, .item-card:hover {
    background: var(--bg-card-hover) !important;
    border-color: var(--border-bright) !important;
    transform: translateY(-4px) !important;
    box-shadow: 0 8px 30px rgba(108, 92, 231, 0.2) !important;
}

.card::before, .equip-card::before, .deco-card::before, .mode-card::before {
    content: '' !important;
    position: absolute !important;
    top: 0; left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, var(--primary), var(--accent)) !important;
    transform: scaleX(0) !important;
    transform-origin: left !important;
    transition: transform 0.3s var(--ease-out-quart) !important;
}

.card:hover::before, .equip-card:hover::before, .deco-card:hover::before, .mode-card:hover::before {
    transform: scaleX(1) !important;
}

/* 按钮增强 */
.btn, .auth-btn, .buy-btn, .create-room-btn {
    font-family: var(--font-display) !important;
    font-weight: 700 !important;
    letter-spacing: 0.05em !important;
    border-radius: var(--radius-sm) !important;
    transition: all 0.25s var(--ease-out-quart) !important;
    position: relative !important;
    overflow: hidden !important;
}

.btn:hover, .auth-btn:hover, .buy-btn:hover, .create-room-btn:hover {
    transform: translateY(-2px) !important;
    box-shadow: 0 6px 25px rgba(108, 92, 231, 0.4) !important;
}

.btn:active, .auth-btn:active, .buy-btn:active, .create-room-btn:active {
    transform: translateY(0) scale(0.97) !important;
}

/* 底部导航增强 */
.bottom-nav {
    background: linear-gradient(180deg, rgba(6, 6, 20, 0.95) 0%, rgba(6, 6, 20, 1) 100%) !important;
    backdrop-filter: blur(20px) !important;
    border-top: 1px solid var(--border) !important;
    box-shadow: 0 -2px 20px rgba(0, 0, 0, 0.5) !important;
}

.bottom-nav .nav-item.active .nav-icon {
    color: var(--accent) !important;
    text-shadow: 0 0 10px rgba(0, 206, 201, 0.5) !important;
}

.bottom-nav .nav-item.active .nav-label {
    color: var(--accent) !important;
}

/* 进度条增强 */
.exp-fill, .progress-fill, .bar-fill {
    background: linear-gradient(90deg, var(--primary), var(--accent)) !important;
    border-radius: 6px !important;
    position: relative !important;
    overflow: hidden !important;
}

/* 表单输入增强 */
.form-group input, .form-group select, .answer-input, input[type="text"], input[type="password"], select {
    background: rgba(0, 0, 0, 0.3) !important;
    border: 1px solid var(--border) !important;
    border-radius: var(--radius-sm) !important;
    color: var(--text-bright) !important;
    transition: all 0.25s var(--ease-out-quart) !important;
}

.form-group input:focus, .form-group select:focus, .answer-input:focus, input[type="text"]:focus, input[type="password"]:focus, select:focus {
    border-color: var(--primary-light) !important;
    box-shadow: 0 0 0 3px rgba(108, 92, 231, 0.15) !important;
    background: rgba(0, 0, 0, 0.4) !important;
}

/* 弹窗增强 */
.modal-content {
    background: linear-gradient(180deg, var(--bg-mid) 0%, var(--bg-dark) 100%) !important;
    border: 1px solid var(--border-bright) !important;
    border-radius: var(--radius-lg) !important;
    box-shadow: 0 0 50px rgba(108, 92, 231, 0.3) !important;
}

/* 滚动条 */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg-dark); }
::-webkit-scrollbar-thumb { background: var(--primary-dark); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--primary); }

::selection { background: rgba(108, 92, 231, 0.3); color: #fff; }

/* ============================================================
   PC 端导航增强
   ============================================================ */
@media (min-width: 769px) {
    .game-hud { padding: 12px 40px; }
    .hud-title { font-size: 20px; }
}

/* ============================================================
   减少动画 (无障碍)
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    body::after { animation: none !important; }
}

/* ============================================================
   入场动画
   ============================================================ */
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInScale {
    from { opacity: 0; transform: scale(0.9); }
    to { opacity: 1; transform: scale(1); }
}

@keyframes slideInLeft {
    from { opacity: 0; transform: translateX(-30px); }
    to { opacity: 1; transform: translateX(0); }
}

.fade-in-up { animation: fadeInUp 0.5s var(--ease-out-quart) both; }
.fade-in-scale { animation: fadeInScale 0.4s var(--ease-out-quart) both; }
.slide-in-left { animation: slideInLeft 0.4s var(--ease-out-quart) both; }

.stagger-1 { animation-delay: 0.05s; }
.stagger-2 { animation-delay: 0.1s; }
.stagger-3 { animation-delay: 0.15s; }
.stagger-4 { animation-delay: 0.2s; }
.stagger-5 { animation-delay: 0.25s; }
.stagger-6 { animation-delay: 0.3s; }

/* 呼吸光效 - 替代旋转 */
@keyframes breathe {
    0%, 100% { box-shadow: 0 0 20px rgba(108, 92, 231, 0.2); }
    50% { box-shadow: 0 0 35px rgba(108, 92, 231, 0.4); }
}

@keyframes goldBreathe {
    0%, 100% { box-shadow: 0 0 20px rgba(255, 215, 0, 0.2); }
    50% { box-shadow: 0 0 35px rgba(255, 215, 0, 0.4); }
}

.breathe { animation: breathe 3s ease-in-out infinite; }
.breathe-gold { animation: goldBreathe 3s ease-in-out infinite; }