/* ================================================================
   theme-rain.css —— 「夜雨」主题
   湿玻璃质感，冷白数字，雨夜深蓝
   ================================================================ */

body.theme-rain {
    background: #070b16;
}

/* 顶部到底部的微弱湿气暗角 */
body.theme-rain::before {
    content: '';
    position: fixed;
    inset: 0;
    z-index: 50;
    pointer-events: none;
    background: radial-gradient(ellipse at 50% 46%,
        rgba(0, 0, 0, 0) 44%,
        rgba(5, 8, 16, 0.50) 100%);
}

/* ---- 加载闪屏 ---- */
body.theme-rain .loading-shimmer {
    background: #070b16;
    color: rgba(150, 185, 230, 0.30);
    text-shadow: 0 0 24px rgba(100, 145, 210, 0.45);
}

/* ---- 日期 ---- */
body.theme-rain .date-display {
    color: rgba(190, 212, 240, 0.88);
    letter-spacing: 5px;
    font-weight: 400;
    background: rgba(10, 15, 28, 0.72);
    border: 1px solid rgba(110, 150, 210, 0.26);
    border-radius: 8px;
    text-shadow:
        0 0 10px rgba(140, 175, 225, 0.45),
        0 0 26px rgba(100, 145, 210, 0.25);
    box-shadow:
        0 0 22px rgba(100, 145, 210, 0.10),
        inset 0 1px 0 rgba(200, 220, 250, 0.07),
        inset 0 0 26px rgba(100, 145, 210, 0.05);
}

body.theme-rain .date-display::before {
    content: '☂ ';
    color: rgba(140, 180, 235, 0.90);
    text-shadow: 0 0 14px rgba(120, 165, 225, 0.60);
}

/* ---- 时钟主体：湿玻璃 ---- */
body.theme-rain .clock {
    background: rgba(10, 15, 28, 0.68);
    border: 1px solid rgba(110, 150, 210, 0.20);
    border-radius: 22px;
    box-shadow:
        0 0 28px rgba(100, 145, 210, 0.08),
        0 24px 90px rgba(0, 0, 0, 0.92),
        inset 0 1px 0 rgba(200, 220, 250, 0.06),
        inset 0 0 80px rgba(100, 145, 210, 0.04);
}

/* ---- 翻牌卡片 ---- */
body.theme-rain .flip-card {
    border-radius: 12px;
    box-shadow:
        0 0 14px rgba(100, 145, 210, 0.08),
        0 6px 30px rgba(0, 0, 0, 0.88);
}

body.theme-rain .flip-face {
    border-radius: 12px;
    background: linear-gradient(165deg, #141c2e 0%, #0d1322 55%, #080d18 100%);
    border: 1px solid rgba(110, 150, 210, 0.24);
    box-shadow:
        inset 0 1px 0 rgba(200, 220, 250, 0.08),
        inset 0 0 30px rgba(100, 145, 210, 0.05),
        inset 0 -16px 34px rgba(70, 105, 165, 0.06);
}

body.theme-rain .flip-back {
    background: linear-gradient(165deg, #0d1322, #080d18);
    border-color: rgba(90, 130, 190, 0.28);
}

/* ---- 数字：冷白微光 + 缓慢呼吸 ---- */
body.theme-rain .digit {
    color: #cfe2f7;
    animation: digitBreathRain 7s ease-in-out infinite;
}

@keyframes digitBreathRain {
    0%, 100% {
        text-shadow:
            0 0 12px rgba(190, 215, 245, 0.45),
            0 0 32px rgba(110, 155, 215, 0.28),
            0 0 64px rgba(80, 120, 185, 0.16);
    }
    50% {
        text-shadow:
            0 0 18px rgba(190, 215, 245, 0.62),
            0 0 46px rgba(110, 155, 215, 0.40),
            0 0 88px rgba(80, 120, 185, 0.26);
    }
}

body.theme-rain .flip-card.flipping .digit {
    filter: brightness(1.28);
}

/* ---- 卡片中线：雨痕 ---- */
body.theme-rain .flip-unit::after {
    height: 1.5px;
    background: linear-gradient(90deg,
        transparent,
        rgba(110, 155, 215, 0.40),
        rgba(200, 220, 250, 0.75),
        rgba(110, 155, 215, 0.40),
        transparent);
    box-shadow:
        0 0 12px rgba(110, 155, 215, 0.35),
        0 0 26px rgba(80, 120, 185, 0.18);
    opacity: 0.7;
}

body.theme-rain .flip-unit::before {
    background: radial-gradient(ellipse at center, rgba(110, 155, 215, 0.12) 0%, transparent 70%);
}

/* ---- 冒号：雨滴坠落般的慢闪 ---- */
body.theme-rain .colon {
    color: rgba(165, 195, 235, 0.62);
    animation: colonPulseRain 1.6s ease-in-out infinite alternate;
}

@keyframes colonPulseRain {
    0% {
        opacity: 0.32;
        text-shadow: 0 0 8px rgba(110, 155, 215, 0.25);
    }
    100% {
        opacity: 0.92;
        text-shadow:
            0 0 14px rgba(200, 220, 250, 0.60),
            0 0 34px rgba(110, 155, 215, 0.35);
    }
}

/* ---- 悬浮按钮 ---- */
body.theme-rain .fullscreen-btn,
body.theme-rain .settings-btn {
    background: rgba(10, 15, 28, 0.80);
    border: 1px solid rgba(110, 150, 210, 0.24);
    color: rgba(165, 195, 235, 0.78);
    box-shadow:
        0 0 16px rgba(100, 145, 210, 0.08),
        0 4px 26px rgba(0, 0, 0, 0.72);
}

body.theme-rain .fullscreen-btn:hover,
body.theme-rain .settings-btn:hover {
    background: rgba(22, 30, 50, 0.90);
    border-color: rgba(130, 170, 225, 0.50);
    color: #fff;
    box-shadow:
        0 0 22px rgba(120, 165, 225, 0.30),
        0 0 50px rgba(100, 145, 210, 0.18);
}

/* ---- 设置面板 ---- */
body.theme-rain .settings-panel {
    background: rgba(10, 15, 28, 0.90);
    border: 1px solid rgba(110, 150, 210, 0.28);
    box-shadow:
        0 0 26px rgba(100, 145, 210, 0.14),
        0 20px 60px rgba(0, 0, 0, 0.85);
}

body.theme-rain .panel-title {
    color: rgba(165, 195, 235, 0.72);
    text-shadow: 0 0 14px rgba(110, 155, 215, 0.40);
}

body.theme-rain .panel-label {
    color: rgba(140, 170, 215, 0.52);
}

body.theme-rain .theme-option {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(110, 150, 210, 0.15);
    color: rgba(200, 218, 240, 0.80);
}

body.theme-rain .theme-option:hover {
    background: rgba(110, 155, 215, 0.10);
    border-color: rgba(130, 170, 225, 0.45);
    color: #fff;
    box-shadow: 0 0 18px rgba(110, 155, 215, 0.18);
}

body.theme-rain .theme-option.is-active {
    border-color: rgba(130, 170, 225, 0.60);
    background: rgba(110, 155, 215, 0.14);
    color: #fff;
    box-shadow:
        0 0 22px rgba(120, 165, 225, 0.26),
        inset 0 0 18px rgba(110, 155, 215, 0.07);
}

body.theme-rain .theme-check {
    color: #9ec3ee;
    text-shadow: 0 0 10px rgba(140, 180, 235, 0.80);
}