/* ==================== 全局重置与基础样式 ==================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', sans-serif;
    background: var(--bg-page);
    min-height: 100vh;
    color: var(--text-primary);
    overflow-x: hidden;
}

/* ==================== 主题变量（深色默认） ==================== */
:root {
    /* 旧变量兼容 */
    --amber-bg-primary: #0d0c0a;
    --amber-bg-secondary: rgba(30, 26, 22, 0.6);
    --amber-bg-tertiary: rgba(22, 20, 17, 0.5);
    --amber-border: rgba(198, 165, 110, 0.4);
    --amber-border-light: rgba(198, 165, 110, 0.3);
    --amber-border-hover: #dbb067;
    --amber-text-primary: #e8e2d4;
    --amber-text-secondary: #bcac91;
    --amber-text-muted: #9e8a6c;
    --amber-accent: #c6a56e;
    --amber-accent-light: #ecd9b4;
    --amber-gold: #dbb067;
    --amber-brown: #a67c45;

    /* 统一主题变量 - 深色模式 */
    --bg-page: #0d0c0a;
    --bg-elevated: rgba(30, 26, 22, 0.6);
    --bg-card: rgba(22, 20, 17, 0.7);
    --bg-card-hover: rgba(30, 26, 22, 0.9);
    --bg-toolbar: rgba(28, 26, 22, 0.7);
    --bg-toolbar-hover: rgba(44, 38, 32, 0.9);
    --bg-dropdown: rgba(20, 18, 15, 0.96);
    --bg-input: rgba(10, 8, 6, 0.8);
    --bg-modal: rgba(26, 23, 20, 0.98);
    --bg-overlay: rgba(0, 0, 0, 0.8);
    --bg-badge: rgba(150, 120, 80, 0.3);
    --bg-highlight: rgba(198, 165, 110, 0.2);
    --bg-sidebar: rgba(18, 16, 14, 0.75);
    --bg-tag: rgba(0,0,0,0.4);
    --bg-list-item: rgba(30,26,22,0.7);

    --bg-card-gradient: linear-gradient(135deg, rgba(30,26,22,0.8), rgba(40,36,32,0.6));
    --bg-card-gradient-strong: linear-gradient(145deg, rgba(30,26,22,0.9), rgba(40,36,32,0.7));
    --bg-icon-wrapper: linear-gradient(135deg, rgba(198,165,110,0.2), rgba(166,124,69,0.15));
    --bg-hover-soft: rgba(20,18,16,0.6);
    --bg-hover-strong: rgba(20,18,16,0.8);
    --scrollbar-track: rgba(20,18,16,0.3);
    --scrollbar-thumb: rgba(198,165,110,0.3);
    --scrollbar-thumb-hover: rgba(198,165,110,0.5);
    --shadow-accent-sm: 0 4px 12px rgba(198,165,110,0.15);
    --shadow-accent-md: 0 8px 24px rgba(198,165,110,0.2);

    --bg-filter-bar: rgba(30,26,22,0.4);
    --bg-select-option: #1a1714;
    --border-focus: rgba(198,165,110,0.8);

    --text-primary: #e8e2d4;
    --text-secondary: #bcac91;
    --text-muted: #9e8a6c;
    --text-accent: #ecd9b4;
    --text-card-title: #f2e6d5;
    --text-card-desc: #bcac91;
    --text-link: #f2e6d5;
    --text-link-hover: #e7bc7e;
    --text-icon: #c6a56e;
    --text-icon-hover: #dbb067;
    --text-inverse: #191713;
    --text-placeholder: #9e8a6c;

    --border: rgba(198, 165, 110, 0.4);
    --border-light: rgba(198, 165, 110, 0.25);
    --border-lighter: rgba(198, 165, 110, 0.15);
    --border-hover: #dbb067;
    --border-accent: rgba(198, 165, 110, 0.5);
    --border-input: rgba(198, 165, 110, 0.5);

    --accent-gold: #c6a56e;
    --accent-gold-light: #ecd9b4;
    --accent-gold-hover: #dbb067;
    --accent-brown: #a67c45;
    --accent-gradient: linear-gradient(135deg, #c6a56e, #a67c45);
    --accent-gradient-light: linear-gradient(135deg, #ecd9b4, #c6a56e);

    --shadow-sm: 0 2px 8px rgba(0,0,0,0.3);
    --shadow-md: 0 8px 24px rgba(0,0,0,0.4);
    --shadow-lg: 0 12px 28px rgba(0,0,0,0.4);
    --shadow-xl: 0 20px 60px rgba(0,0,0,0.6);

    --grain-opacity: 0.35;
    --dots-color: rgba(210, 180, 140, 0.05);
    --mouse-glow-color: rgba(190,150,90,0.05);
}

/* ==================== 浅色主题 ==================== */
[data-theme="light"] {
    --bg-page: #f5f0e8;
    --bg-elevated: rgba(255, 255, 248, 0.9);
    --bg-card: rgba(255, 255, 255, 0.85);
    --bg-card-hover: rgba(255, 255, 255, 0.95);
    --bg-toolbar: rgba(255, 255, 248, 0.85);
    --bg-toolbar-hover: rgba(255, 255, 255, 0.95);
    --bg-dropdown: rgba(255, 255, 248, 0.98);
    --bg-input: rgba(255, 255, 248, 0.9);
    --bg-modal: rgba(255, 255, 248, 0.98);
    --bg-overlay: rgba(0, 0, 0, 0.5);
    --bg-badge: rgba(198, 165, 110, 0.2);
    --bg-highlight: rgba(198, 165, 110, 0.15);
    --bg-sidebar: rgba(255, 255, 248, 0.85);
    --bg-tag: rgba(0,0,0,0.06);
    --bg-list-item: rgba(255, 255, 248, 0.7);

    --bg-card-gradient: linear-gradient(135deg, rgba(255,255,248,0.92), rgba(248,245,240,0.8));
    --bg-card-gradient-strong: linear-gradient(145deg, rgba(255,255,248,0.95), rgba(248,245,240,0.85));
    --bg-icon-wrapper: linear-gradient(135deg, rgba(198,165,110,0.12), rgba(166,124,69,0.08));
    --bg-hover-soft: rgba(200,190,180,0.35);
    --bg-hover-strong: rgba(200,190,180,0.55);
    --scrollbar-track: rgba(200,190,180,0.3);
    --scrollbar-thumb: rgba(198,165,110,0.4);
    --scrollbar-thumb-hover: rgba(198,165,110,0.6);
    --shadow-accent-sm: 0 4px 12px rgba(198,165,110,0.1);
    --shadow-accent-md: 0 8px 24px rgba(198,165,110,0.15);

    --bg-filter-bar: rgba(255,255,248,0.7);
    --bg-select-option: #f5f0e8;
    --border-focus: rgba(198,165,110,0.6);

    --text-primary: #3d3528;
    --text-secondary: #8a7a64;
    --text-muted: #9e8a6c;
    --text-accent: #5a4a32;
    --text-card-title: #3d3528;
    --text-card-desc: #8a7a64;
    --text-link: #3d3528;
    --text-link-hover: #a67c45;
    --text-icon: #b69054;
    --text-icon-hover: #c6a56e;
    --text-inverse: #ffffff;
    --text-placeholder: #b8a88c;

    --border: rgba(198, 165, 110, 0.35);
    --border-light: rgba(198, 165, 110, 0.2);
    --border-lighter: rgba(198, 165, 110, 0.12);
    --border-hover: #c6a56e;
    --border-accent: rgba(198, 165, 110, 0.45);
    --border-input: rgba(198, 165, 110, 0.4);

    --accent-gold: #b69054;
    --accent-gold-light: #d4b57e;
    --accent-gold-hover: #c6a56e;
    --accent-brown: #8a6c3a;
    --accent-gradient: linear-gradient(135deg, #b69054, #8a6c3a);
    --accent-gradient-light: linear-gradient(135deg, #d4b57e, #b69054);

    --shadow-sm: 0 2px 8px rgba(0,0,0,0.08);
    --shadow-md: 0 8px 24px rgba(0,0,0,0.1);
    --shadow-lg: 0 12px 28px rgba(0,0,0,0.12);
    --shadow-xl: 0 20px 60px rgba(0,0,0,0.15);

    --grain-opacity: 0.12;
    --dots-color: rgba(180, 150, 100, 0.08);
    --mouse-glow-color: rgba(200, 180, 140, 0.08);
}

/* ==================== 颗粒纹理背景（所有页面共用） ==================== */
#grain-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
    opacity: var(--grain-opacity);
}

body::before {
    content: "";
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: radial-gradient(var(--dots-color) 1px, transparent 1px);
    background-size: 30px 30px;
    pointer-events: none;
    z-index: 1;
}

/* ==================== 动画 ==================== */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(6px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ==================== TDesign 风格按钮（可选） ==================== */
.td-button {
    background: transparent;
    border: none;
    padding: 8px 16px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    font-family: inherit;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.td-button--primary {
    background: var(--td-brand-color);
    color: white;
}

.td-button--primary:hover {
    background: var(--td-brand-color-hover);
}

.td-button--outline {
    border: 1px solid var(--td-border-color);
    background: var(--bg-elevated);
    color: var(--text-primary);
}

.td-button--outline:hover {
    background: #f9fafc;
    border-color: #cbd0d9;
}