/* =========================================
   y-toolbox 全局统一 UI 样式库
   Design System: macOS 15.7.4 实体感风格
========================================= */

/* ---- 弹簧动画曲线 ---- */
:root {
    /* Spring: 带阻尼回弹感 */
    --spring: cubic-bezier(0.175, 0.885, 0.32, 1.275);
    /* Spring-soft: 柔和阻尼 */
    --spring-soft: cubic-bezier(0.25, 0.46, 0.45, 0.94);
    /* Spring-snappy: 快速回弹 */
    --spring-snappy: cubic-bezier(0.34, 1.56, 0.64, 1);

    --bg-app: #111111;
    --bg-panel: #1c1c1e;
    --text-primary: #ffffff;
    --text-secondary: #8e8e93;
    --border-color: rgba(255, 255, 255, 0.06);
    --border-fine: rgba(255, 255, 255, 0.1);
    --accent: #0a84ff;
    --accent-hover: #0070e0;
    --accent-glow: rgba(10, 132, 255, 0.35);
    --btn-bg: rgba(255, 255, 255, 0.08);
    --btn-hover: rgba(255, 255, 255, 0.13);
    --btn-text: #ebebf5;

    /* 多层投影体系 (深色) */
    --shadow-ambient: 0 1px 3px rgba(0, 0, 0, 0.25);
    --shadow-drop: 0 8px 24px rgba(0, 0, 0, 0.45);
    --shadow-elevated: 0 2px 6px rgba(0, 0, 0, 0.3), 0 12px 32px rgba(0, 0, 0, 0.5);
    --shadow-float: 0 4px 12px rgba(0, 0, 0, 0.2), 0 20px 48px rgba(0, 0, 0, 0.55);
    /* 内发光 */
    --inner-glow: inset 0 1px 0 rgba(255, 255, 255, 0.06), inset 0 0 0 0.5px rgba(255, 255, 255, 0.07);
}

html.light-mode {
    --bg-app: #f1f5f9; 
    --bg-panel: #ffffff; 
    --text-primary: #1e293b;
    --text-secondary: #64748b; 
    --border-color: rgba(0, 0, 0, 0.06);
    --border-fine: rgba(0, 0, 0, 0.1);
    --accent: #2563eb; 
    --accent-hover: #1d4ed8;
    --btn-bg: rgba(0, 0, 0, 0.04); 
    --btn-hover: rgba(0, 0, 0, 0.07); 
    --btn-text: #334155;

    --shadow-ambient: 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-drop: 0 6px 20px rgba(0, 0, 0, 0.06);
    --shadow-elevated: 0 2px 4px rgba(0, 0, 0, 0.04), 0 10px 28px rgba(0, 0, 0, 0.08);
    --shadow-float: 0 4px 8px rgba(0, 0, 0, 0.04), 0 16px 40px rgba(0, 0, 0, 0.1);
    --inner-glow: inset 0 1px 0 rgba(255, 255, 255, 0.8), inset 0 0 0 0.5px rgba(255, 255, 255, 0.5);
}

*, *::before, *::after { box-sizing: border-box; }

/* ---- 深色/浅色模式切换过渡（仅在主动切换时触发，避免初始加载闪烁） ---- */
html.theme-transition *,
html.theme-transition *::before,
html.theme-transition *::after {
    transition:
        background-color 0.4s var(--spring-soft),
        color 0.35s var(--spring-soft),
        border-color 0.35s var(--spring-soft),
        box-shadow 0.4s var(--spring-soft),
        fill 0.35s var(--spring-soft) !important;
    transition-delay: 0s !important;
}

body {
    font-family: -apple-system, "SF Pro Display", "PingFang SC", "Microsoft YaHei", BlinkMacSystemFont, sans-serif;
    background-color: var(--bg-app); 
    color: var(--text-primary);
    margin: 0; padding: 20px; 
    display: flex; flex-direction: column; align-items: center; 
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.main-wrapper { width: 100%; max-width: 1100px; display: flex; flex-direction: column; flex: 1; }

/* =========================================
   四维口袋专属页眉 (macOS 风格实体感)
========================================= */
.pocket-header {
    position: relative;
    display: flex; justify-content: space-between; align-items: center;
    background-color: var(--bg-panel); 
    border: 0.5px solid var(--border-fine);
    border-radius: 14px; padding: 15px 20px; margin-bottom: 25px;
    box-shadow: var(--shadow-ambient), var(--shadow-drop), var(--inner-glow);
    min-height: 74px;
    transition: box-shadow 0.4s var(--spring-soft);
}

.pocket-brand {
    position: absolute; left: 50%; transform: translateX(-50%);
    font-size: 22px !important; 
    font-weight: 900; letter-spacing: 2px;
    background: linear-gradient(135deg, #60a5fa, #a78bfa);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    user-select: none; text-align: center; white-space: nowrap;
}

.btn-back, .theme-toggle {
    height: 40px !important;
    display: flex; align-items: center; justify-content: center;
    box-sizing: border-box; white-space: nowrap;
}

.btn-back {
    background: var(--accent); color: #fff; font-size: 15px; font-weight: bold;
    border-radius: 30px; text-decoration: none; padding: 0 24px; gap: 6px;
    box-shadow: var(--shadow-ambient), 0 4px 14px var(--accent-glow);
    transition: transform 0.5s var(--spring), background 0.3s var(--spring-soft), box-shadow 0.3s var(--spring-soft);
    will-change: transform;
}
.btn-back:hover {
    transform: translateX(-6px) scale(1.02);
    background: var(--accent-hover); 
    box-shadow: var(--shadow-ambient), 0 6px 20px var(--accent-glow);
}
.btn-back:active {
    transform: translateX(-3px) scale(0.97);
    transition-duration: 0.1s;
}

.btn-back.placeholder {
    visibility: hidden; pointer-events: none;
}

.theme-toggle {
    background: var(--btn-bg); 
    border: 0.5px solid var(--border-fine);
    color: var(--text-primary); border-radius: 20px; padding: 0 16px;
    cursor: pointer; font-size: 14px; font-weight: bold; 
    box-shadow: var(--shadow-ambient), var(--inner-glow);
    transition: transform 0.4s var(--spring), border-color 0.3s, color 0.3s, box-shadow 0.3s;
    will-change: transform;
}
.theme-toggle:hover { 
    border-color: var(--accent); color: var(--accent); 
    transform: scale(1.05);
    box-shadow: var(--shadow-ambient), var(--shadow-drop), var(--inner-glow);
}
.theme-toggle:active { 
    transform: scale(0.95); 
    transition-duration: 0.1s; 
}

/* ----------------------------------------- */

.global-header {
    display: flex; justify-content: space-between; align-items: flex-end;
    margin-bottom: 20px; padding-bottom: 15px; border-bottom: 1px dashed var(--border-color);
}
.global-header .title-group h1 {
    margin: 0; font-size: 26px !important; color: var(--text-primary);
}
.global-header .title-group .subtitle { font-size: 13px; color: var(--text-secondary); margin-top: 5px; display: block; }

/* =========================================
   面板 — 实体悬浮卡片
========================================= */
.panel {
    background: var(--bg-panel); 
    border: 0.5px solid var(--border-fine);
    border-radius: 14px; padding: 20px; 
    box-shadow: var(--shadow-ambient), var(--shadow-drop), var(--inner-glow);
    margin-bottom: 20px;
    transition: box-shadow 0.4s var(--spring-soft), transform 0.4s var(--spring);
}

/* =========================================
   按钮 — 微形变回弹反馈
========================================= */
.btn {
    border: none; padding: 8px 16px; border-radius: 8px; cursor: pointer;
    font-size: 14px; font-weight: 600; 
    transition: transform 0.4s var(--spring), background 0.25s var(--spring-soft), box-shadow 0.25s var(--spring-soft), border-color 0.25s;
    display: inline-flex; align-items: center; gap: 6px; text-decoration: none;
    will-change: transform;
}
.btn:active {
    transform: scale(0.95);
    transition-duration: 0.1s;
}

.btn-primary { 
    background: var(--accent); color: #fff; 
    box-shadow: var(--shadow-ambient), 0 4px 12px var(--accent-glow);
}
.btn-primary:hover { 
    background: var(--accent-hover); 
    box-shadow: var(--shadow-ambient), 0 6px 18px var(--accent-glow); 
    transform: translateY(-1px) scale(1.02);
}
.btn-primary:active { 
    transform: translateY(1px) scale(0.96); 
    transition-duration: 0.1s; 
}

.btn-normal { 
    background: var(--btn-bg); color: var(--btn-text); 
    border: 0.5px solid var(--border-fine); 
    box-shadow: var(--shadow-ambient), var(--inner-glow);
}
.btn-normal:hover { 
    background: var(--btn-hover); color: var(--text-primary); 
    border-color: var(--border-fine);
    transform: translateY(-1px); 
    box-shadow: var(--shadow-ambient), var(--shadow-drop), var(--inner-glow);
}

/* =========================================
   输入框 — 聚焦发光反馈
========================================= */
input[type="text"], input[type="number"], textarea {
    width: 100%; padding: 10px 15px; background-color: var(--bg-app);
    border: 0.5px solid var(--border-fine); border-radius: 8px;
    color: var(--text-primary); font-family: inherit; box-sizing: border-box;
    outline: none; 
    box-shadow: var(--shadow-ambient), var(--inner-glow);
    transition: border-color 0.3s var(--spring-soft), box-shadow 0.3s var(--spring-soft), transform 0.3s var(--spring);
}
input:focus, textarea:focus { 
    border-color: var(--accent); 
    box-shadow: var(--shadow-ambient), 0 0 0 3px var(--accent-glow), var(--inner-glow);
    transform: translateY(-1px);
}

/* =========================================
   全局移动端适配 (macOS HIG → iOS HIG 衔接)
========================================= */

/* --- 触控设备：禁用 hover 位移，改用 active 反馈 --- */
@media (hover: none) {
    .btn:hover, .btn-primary:hover, .btn-normal:hover, .nav-card:hover, .theme-toggle:hover, .btn-back:hover {
        transform: none;
    }
    .btn:active { transform: scale(0.95); transition-duration: 0.1s; }
    .btn-primary:active { transform: scale(0.96); transition-duration: 0.1s; }
    .nav-card:active { transform: scale(0.97); transition-duration: 0.12s; }
}

/* --- 平板及以下（≤768px） --- */
@media (max-width: 768px) {
    body { padding: 12px; }
    .main-wrapper { max-width: 100%; }

    .pocket-header {
        border-radius: 12px; padding: 10px 14px; min-height: auto; margin-bottom: 16px;
        flex-wrap: wrap; justify-content: center; gap: 8px;
    }
    /* 品牌居中改为常规流式，避免 absolute 重叠 */
    .pocket-brand { 
        position: static; transform: none;
        width: 100%; text-align: center; order: -1;
        font-size: 17px !important; letter-spacing: 1px;
        margin-bottom: 4px;
    }
    .btn-back { font-size: 13px; padding: 0 16px; height: 36px !important; border-radius: 20px; }
    .btn-back.placeholder { display: none; }
    .theme-toggle { font-size: 13px; padding: 0 14px; height: 36px !important; }

    .global-header { flex-wrap: wrap; gap: 8px; }
    .global-header .title-group h1 { font-size: 20px !important; }
    .global-header .title-group .subtitle { font-size: 12px; }

    .panel { border-radius: 12px; padding: 16px; margin-bottom: 14px; }

    .btn { font-size: 13px; padding: 8px 14px; border-radius: 8px; }

    input[type="text"], input[type="number"], textarea {
        font-size: 16px; /* iOS prevents zoom when ≥16px */
    }
}

/* --- 手机（≤480px） --- */
@media (max-width: 480px) {
    body { padding: 8px; }

    .pocket-header {
        border-radius: 10px; padding: 8px 10px; margin-bottom: 12px;
        gap: 6px;
    }
    .pocket-brand { font-size: 15px !important; letter-spacing: 0.5px; margin-bottom: 2px; }
    .btn-back { font-size: 13px; padding: 0 14px; height: 36px !important; gap: 4px; }
    .theme-toggle { font-size: 12px; padding: 0 12px; height: 36px !important; }

    .global-header { margin-bottom: 10px; padding-bottom: 8px; }
    .global-header .title-group h1 { font-size: 18px !important; }

    .panel { border-radius: 10px; padding: 14px; }

    .btn { font-size: 13px; padding: 8px 14px; }

    input[type="text"], input[type="number"], textarea {
        padding: 10px 12px; font-size: 16px; border-radius: 8px;
    }
}