/* Miuix CSS - HyperOS Design System for Web
 * Color tokens match Xiaomi HyperOS design spec
 * Reference: https://compose-miuix-ui.github.io/miuix/zh_CN/guide/colors
 */

:root {
    --accent: #3482FF;
    --accent-hover: #277AF7;
    --danger: #E94634;
    --success: #34C759;
    --warning: #FF9F0A;

    --radius-xs: 4px;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --radius-xxl: 24px;

    --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
    --shadow-md: 0 2px 8px rgba(0,0,0,0.10);
    --shadow-lg: 0 4px 16px rgba(0,0,0,0.12);

    --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.35s cubic-bezier(0.4, 0, 0.2, 1);

    --sidebar-width: 260px;
    --sidebar-collapsed-width: 60px;
    --topbar-height: 56px;

    --blur-small: blur(6px) saturate(140%);
    --blur-medium: blur(12px) saturate(160%);
    --blur-large: blur(20px) saturate(180%);
}

/* ===== Light Theme (HyperOS Light) ===== */
.theme-light {
    --bg-primary: #FFFFFF;
    --bg-secondary: #F7F7F7;
    --bg-tertiary: #F0F0F0;
    --bg-glass: rgba(255, 255, 255, 0.82);
    --bg-glass-hover: rgba(255, 255, 255, 0.90);
    --bg-glass-active: rgba(240, 240, 240, 0.88);
    --bg-card: rgba(255, 255, 255, 0.78);
    --bg-card-hover: rgba(255, 255, 255, 0.90);
    --bg-input: rgba(248, 248, 248, 0.9);
    --bg-input-focus: rgba(240, 245, 255, 0.95);
    --bg-menu: rgba(255, 255, 255, 0.95);
    --bg-tooltip: rgba(30, 30, 30, 0.92);

    --text-primary: #000000;
    --text-secondary: #8C93B0;
    --text-tertiary: #959595;
    --text-inverse: #FFFFFF;
    --text-link: #3482FF;
    --text-disabled: #B2B2B2;

    --border-subtle: rgba(0, 0, 0, 0.04);
    --border-normal: rgba(0, 0, 0, 0.08);
    --border-strong: rgba(0, 0, 0, 0.12);
    --outline: #D9D9D9;
    --divider: #E0E0E0;

    --accent-container: #EAF2FF;
    --accent-on-container: #3482FF;
    --error-container: #FDF6F4;
    --error-on-container: #410002;

    --scrollbar-bg: rgba(0, 0, 0, 0.04);
    --scrollbar-thumb: rgba(0, 0, 0, 0.12);
}

/* ===== Dark Theme (HyperOS Dark) ===== */
.theme-dark {
    --bg-primary: #000000;
    --bg-secondary: #242424;
    --bg-tertiary: #2D2D2D;
    --bg-glass: rgba(36, 36, 36, 0.72);
    --bg-glass-hover: rgba(45, 45, 45, 0.78);
    --bg-glass-active: rgba(50, 50, 50, 0.82);
    --bg-card: rgba(36, 36, 36, 0.65);
    --bg-card-hover: rgba(45, 45, 45, 0.75);
    --bg-input: rgba(30, 30, 30, 0.8);
    --bg-input-focus: rgba(40, 40, 55, 0.9);
    --bg-menu: rgba(36, 36, 36, 0.95);
    --bg-tooltip: rgba(20, 20, 20, 0.92);

    --text-primary: rgba(255, 255, 255, 0.90);
    --text-secondary: rgba(255, 255, 255, 0.62);
    --text-tertiary: rgba(255, 255, 255, 0.42);
    --text-inverse: #000000;
    --text-link: #277AF7;
    --text-disabled: #666666;

    --border-subtle: rgba(255, 255, 255, 0.04);
    --border-normal: rgba(255, 255, 255, 0.08);
    --border-strong: rgba(255, 255, 255, 0.12);
    --outline: #404040;
    --divider: #393939;

    --accent-container: rgba(39, 122, 247, 0.12);
    --accent-on-container: #277AF7;
    --error-container: #2E0603;
    --error-on-container: #FFDAD6;

    --scrollbar-bg: rgba(255, 255, 255, 0.03);
    --scrollbar-thumb: rgba(255, 255, 255, 0.10);

    --window-dimming: rgba(0, 0, 0, 0.60);
}

/* ===== Global Reset ===== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}
html, body {
    width: 100%; height: 100%;
    font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Text', 'PingFang SC', 'MiSans', 'Microsoft YaHei', system-ui, sans-serif;
    font-size: 14px;
    line-height: 1.5;
    color: var(--text-primary);
    background: var(--bg-primary);
    overflow: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    transition: background var(--transition-normal), color var(--transition-normal);
}

::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
    background: var(--scrollbar-thumb);
    border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--text-tertiary);
}

a { color: var(--text-link); text-decoration: none; }
button { cursor: pointer; border: none; outline: none; font-family: inherit; }

/* ===== Inputs ===== */
input, select, textarea {
    font-family: inherit;
    font-size: 14px;
    padding: 10px 14px;
    border: 1px solid var(--outline);
    border-radius: var(--radius-md);
    background: var(--bg-input);
    color: var(--text-primary);
    outline: none;
    transition: border-color var(--transition-fast), background var(--transition-fast), box-shadow var(--transition-fast);
}
input:focus, select:focus, textarea:focus {
    border-color: var(--accent);
    background: var(--bg-input-focus);
    box-shadow: 0 0 0 2px rgba(52, 130, 255, 0.15);
}
input::placeholder, textarea::placeholder {
    color: var(--text-tertiary);
}

/* ===== Surface Components (HyperOS style) ===== */
.surface {
    background: var(--bg-secondary);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    transition: background var(--transition-normal);
}
.surface-high {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-normal);
    border-radius: var(--radius-lg);
}
.surface-highest {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

/* ===== Glass Surface (blur effect) ===== */
.glass {
    background: var(--bg-glass);
    backdrop-filter: var(--blur-large);
    -webkit-backdrop-filter: var(--blur-large);
    border: 1px solid var(--border-subtle);
}
.glass-light {
    background: var(--bg-glass);
    backdrop-filter: var(--blur-medium);
    -webkit-backdrop-filter: var(--blur-medium);
    border: 1px solid var(--border-subtle);
}
.glass-card {
    background: var(--bg-card);
    backdrop-filter: var(--blur-medium);
    -webkit-backdrop-filter: var(--blur-medium);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    transition: background var(--transition-normal), box-shadow var(--transition-fast), transform var(--transition-fast);
}
.glass-card:hover {
    background: var(--bg-card-hover);
    box-shadow: var(--shadow-md);
}
.glass-card:active {
    transform: scale(0.985);
    transition: transform 0.1s ease;
}

/* ===== Buttons (HyperOS style) ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 10px 20px;
    border-radius: var(--radius-md);
    font-size: 14px;
    font-weight: 500;
    letter-spacing: 0.2px;
    transition: all var(--transition-fast);
    white-space: nowrap;
    position: relative;
    overflow: hidden;
}
.btn::after {
    content: '';
    position: absolute;
    inset: 0;
    background: transparent;
    transition: background var(--transition-fast);
    border-radius: inherit;
}
.btn:hover::after {
    background: rgba(255, 255, 255, 0.08);
}
.btn:active {
    transform: scale(0.97);
}

.btn-primary {
    background: var(--accent);
    color: #FFFFFF;
    box-shadow: 0 2px 6px rgba(52, 130, 255, 0.25);
}
.btn-primary:hover {
    background: var(--accent-hover);
    box-shadow: 0 4px 12px rgba(52, 130, 255, 0.35);
}

.btn-secondary {
    background: var(--bg-glass);
    color: var(--text-primary);
    border: 1px solid var(--border-normal);
}
.btn-secondary:hover {
    background: var(--bg-glass-hover);
    border-color: var(--border-strong);
}

.btn-danger {
    background: var(--danger);
    color: #FFFFFF;
}
.btn-danger:hover {
    opacity: 0.88;
}

.btn-sm { padding: 6px 14px; font-size: 12px; border-radius: var(--radius-sm); }
.btn-lg { padding: 14px 28px; font-size: 16px; border-radius: var(--radius-md); }

.icon-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px; height: 36px;
    border-radius: var(--radius-md);
    background: transparent;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}
.icon-btn:hover {
    background: var(--bg-glass-hover);
    color: var(--text-primary);
}
.icon-btn:active {
    background: var(--bg-glass-active);
}

/* ===== Badge ===== */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 2px 8px;
    border-radius: 10px;
    font-size: 11px;
    font-weight: 600;
}
.badge-success { background: rgba(52, 199, 89, 0.15); color: var(--success); }
.badge-warning { background: rgba(255, 159, 10, 0.15); color: var(--warning); }
.badge-danger { background: rgba(233, 70, 52, 0.15); color: var(--danger); }
.badge-info { background: var(--accent-container); color: var(--accent-on-container); }
.badge-secondary { background: var(--bg-tertiary); color: var(--text-secondary); }

/* ===== Divider ===== */
.divider {
    height: 1px;
    background: var(--divider);
    margin: 0;
}

/* ===== Animations ===== */
.animated {
    animation: fadeInUp 0.35s cubic-bezier(0.4, 0, 0.2, 1) both;
}
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(12px); }
    to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}
@keyframes pulse-ring {
    0% { transform: scale(0.8); opacity: 1; }
    100% { transform: scale(1.4); opacity: 0; }
}