/* ===== Global Subapp Common Design System & Theme Variables ===== */
:root {
    --font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-smooth: 0.35s cubic-bezier(0.16, 1, 0.3, 1);

    /* Light Theme Palette */
    --bg-main: #f5f5f7;
    --bg-card: #ffffff;
    --bg-subtle: #f0f0f4;
    --bg-hover: #e5e5ea;
    --border-color: rgba(0, 0, 0, 0.08);
    --border-highlight: rgba(0, 113, 227, 0.3);

    --text-primary: #1d1d1f;
    --text-secondary: #515154;
    --text-muted: #86868b;
    --accent-blue: #0071e3;
    --accent-blue-hover: #0077ed;
    --accent-blue-light: rgba(0, 113, 227, 0.08);

    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.1);
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --radius-pill: 9999px;
}

[data-theme="dark"] {
    /* Dark Theme Palette */
    --bg-main: #121215;
    --bg-card: #1c1c21;
    --bg-subtle: #26262e;
    --bg-hover: #32323d;
    --border-color: rgba(255, 255, 255, 0.12);
    --border-highlight: rgba(102, 126, 234, 0.4);

    --text-primary: #f5f5f7;
    --text-secondary: #a1a1a6;
    --text-muted: #6e6e73;
    --accent-blue: #0071e3;
    --accent-blue-hover: #2997ff;
    --accent-blue-light: rgba(41, 151, 255, 0.15);

    --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 16px 40px rgba(0, 0, 0, 0.5);

    /* Override local variables used across sub-apps */
    --color-bg: #121215;
    --color-card-bg: #1c1c21;
    --color-white: #1c1c21;
    --color-text-primary: #f5f5f7;
    --color-text-secondary: #a1a1a6;
    --color-text-tertiary: #6e6e73;
    --color-border: rgba(255, 255, 255, 0.12);
    --color-border-light: rgba(255, 255, 255, 0.08);
    --color-hover: #26262e;
    --color-row-hover: #22222a;
    --color-banner-bg: #1e2638;

    /* ApexInterest specific variables */
    --color-bg-body: #121215;
    --color-bg-card: #1c1c21;
    --color-bg-subtle: #26262e;
    --color-bg-muted: #32323d;
    --color-border-hover: rgba(255, 255, 255, 0.2);
    --color-border-focus: #3b82f6;
    --color-brand-light: rgba(37, 99, 235, 0.15);
}

/* Global Subapp Dark Theme Structural Overrides */
[data-theme="dark"] body {
    background-color: var(--bg-main) !important;
    color: var(--text-primary) !important;
}

[data-theme="dark"] .card,
[data-theme="dark"] .generator-section-card,
[data-theme="dark"] .function-panel,
[data-theme="dark"] .stat-card,
[data-theme="dark"] .toolbar,
[data-theme="dark"] .data-display,
[data-theme="dark"] .form-card,
[data-theme="dark"] .chart-card,
[data-theme="dark"] .table-card {
    background-color: var(--bg-card) !important;
    border-color: var(--border-color) !important;
    color: var(--text-primary) !important;
}

[data-theme="dark"] input[type="text"],
[data-theme="dark"] input[type="number"],
[data-theme="dark"] input[type="date"],
[data-theme="dark"] select,
[data-theme="dark"] textarea,
[data-theme="dark"] .select-input,
[data-theme="dark"] .form-input {
    background-color: var(--bg-subtle) !important;
    color: var(--text-primary) !important;
    border-color: var(--border-color) !important;
}

[data-theme="dark"] input::placeholder,
[data-theme="dark"] textarea::placeholder {
    color: var(--text-muted) !important;
}

[data-theme="dark"] .description-banner {
    background: #1a2234 !important;
    border-color: rgba(37, 99, 235, 0.3) !important;
}

[data-theme="dark"] .description-banner h3,
[data-theme="dark"] .description-banner strong,
[data-theme="dark"] .card-title,
[data-theme="dark"] .desc-title {
    color: #f5f5f7 !important;
}

[data-theme="dark"] .description-banner p,
[data-theme="dark"] .description-banner li,
[data-theme="dark"] .card-desc,
[data-theme="dark"] .desc-text {
    color: #a1a1a6 !important;
}

[data-theme="dark"] .modal,
[data-theme="dark"] .modal-content {
    background-color: var(--bg-card) !important;
    border-color: var(--border-color) !important;
    color: var(--text-primary) !important;
}

[data-theme="dark"] table th,
[data-theme="dark"] .rules-table th,
[data-theme="dark"] .data-table th {
    background-color: var(--bg-subtle) !important;
    color: var(--text-primary) !important;
}

[data-theme="dark"] table td,
[data-theme="dark"] .rules-table td,
[data-theme="dark"] .data-table td {
    border-color: var(--border-color) !important;
    color: var(--text-primary) !important;
}

[data-theme="dark"] .segmented-control,
[data-theme="dark"] .quick-chips {
    background-color: var(--bg-subtle) !important;
}

[data-theme="dark"] .chip {
    background-color: var(--bg-card) !important;
    color: var(--text-primary) !important;
    border-color: var(--border-color) !important;
}

/* Global Reset & Body */
body {
    font-family: var(--font-family);
    background-color: var(--bg-main);
    color: var(--text-primary);
    margin: 0;
    padding: 0;
    transition: background-color var(--transition-smooth), color var(--transition-smooth);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Subapp Top Navigation Header */
.subapp-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 32px;
    background: var(--bg-card);
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(20px);
    transition: background-color var(--transition-smooth), border-color var(--transition-smooth);
}

.header-left, .header-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

.header-center {
    display: flex;
    align-items: center;
    gap: 12px;
    text-align: center;
}

.subapp-title-group h1 {
    margin: 0;
    font-size: 1.25rem;
    font-weight: 600;
    letter-spacing: -0.01em;
    color: var(--text-primary);
}

.subapp-title-group p {
    margin: 2px 0 0;
    font-size: 0.825rem;
    color: var(--text-muted);
}

/* Home Button */
.back-home-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 18px;
    border-radius: var(--radius-pill);
    background: var(--accent-blue-light);
    border: 1px solid rgba(0, 113, 227, 0.2);
    color: var(--accent-blue);
    font-weight: 500;
    font-size: 0.875rem;
    text-decoration: none;
    transition: all var(--transition-fast);
    cursor: pointer;
}

.back-home-btn:hover {
    background: var(--accent-blue);
    color: #ffffff;
    box-shadow: 0 4px 12px rgba(0, 113, 227, 0.3);
    transform: translateY(-1px);
}

.back-home-btn svg {
    width: 16px;
    height: 16px;
    fill: currentColor;
}

/* Settings Dropdown Button in Header */
.settings-menu-container {
    position: relative;
}

.header-settings-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background: var(--bg-subtle);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.header-settings-btn:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
    transform: rotate(30deg);
}

.header-settings-btn svg {
    width: 20px;
    height: 20px;
    fill: currentColor;
}

.header-dropdown-menu {
    position: absolute;
    right: 0;
    top: 48px;
    width: 220px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    padding: 12px;
    display: none;
    flex-direction: column;
    gap: 12px;
    z-index: 200;
    animation: fadeInDown 0.2s ease;
}

.header-dropdown-menu.show {
    display: flex;
}

@keyframes fadeInDown {
    from { opacity: 0; transform: translateY(-8px); }
    to { opacity: 1; transform: translateY(0); }
}

.menu-section-title {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    color: var(--text-muted);
    letter-spacing: 0.05em;
    margin-bottom: 4px;
}

.menu-options-group {
    display: flex;
    background: var(--bg-subtle);
    border-radius: var(--radius-sm);
    padding: 3px;
    gap: 2px;
}

.menu-option-btn {
    flex: 1;
    padding: 6px 10px;
    font-size: 0.8rem;
    font-weight: 500;
    border: none;
    background: transparent;
    color: #515154;                 /* light: 显式深灰文字 */
    border-radius: 6px;
    cursor: pointer;
    transition: all var(--transition-fast);
}

[data-theme="dark"] .menu-option-btn { color: #a1a1a6; }   /* dark: 显式浅灰文字 */

.menu-option-btn.active {
    background: var(--bg-card);
    color: #0071e3 !important;      /* active 恒为蓝色，不随主题继承 */
    box-shadow: var(--shadow-sm);
}
[data-theme="dark"] .menu-option-btn.active {
    background: var(--bg-card);
    color: #2997ff !important;
}

/* Description Banner Guidelines */
.description-banner {
    max-width: 1100px;
    margin: 24px auto 0;
    padding: 20px 28px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.description-banner h3 {
    margin: 0 0 12px;
    font-size: 1rem;
    font-weight: 600;
    color: var(--accent-blue);
    display: flex;
    align-items: center;
    gap: 8px;
}

.description-banner ol {
    margin: 0;
    padding-left: 20px;
    color: var(--text-secondary);
    font-size: 0.875rem;
    line-height: 1.6;
}

.description-banner li {
    margin-bottom: 6px;
}

.description-banner li:last-child {
    margin-bottom: 0;
}

/* Toast Message Notification */
.toast-notification {
    position: fixed;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: var(--text-primary);
    color: var(--bg-main);
    padding: 10px 24px;
    border-radius: var(--radius-pill);
    font-size: 0.875rem;
    font-weight: 500;
    box-shadow: var(--shadow-lg);
    z-index: 1000;
    opacity: 0;
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    pointer-events: none;
}

.toast-notification.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

/* ============================================
   移动端适配（顶部导航栏）
   ============================================ */
@media (max-width: 768px) {
    .subapp-header {
        padding: 10px 16px;
    }
    .subapp-title-group p {
        display: none;              /* 窄屏隐藏副标题，避免挤压 */
    }
    .subapp-title-group h1 {
        font-size: 1.05rem;
    }
    .back-home-btn {
        padding: 7px 12px;
        font-size: 0.8rem;
        gap: 6px;
        white-space: nowrap;
    }
    .back-home-btn svg {
        width: 15px;
        height: 15px;
    }
    .header-settings-btn {
        width: 34px;
        height: 34px;
    }
    .header-dropdown-menu {
        top: 42px;
        width: 200px;
    }
    .header-left,
    .header-right {
        gap: 8px;
    }
    .header-center {
        gap: 6px;
    }
}

@media (max-width: 480px) {
    .back-home-btn .back-home-btn-text {
        display: none;              /* 超窄屏：返回按钮只保留图标 */
    }
    .subapp-title-group h1 {
        font-size: 0.92rem;
        max-width: 150px;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
    }
}