/* CalHub Web App - Liquid Glass Design System */
/* Supports both Light and Dark modes */

/* ============================================
   CSS Variables - Light Mode (Default)
   ============================================ */
:root {
    /* Core Colors */
    --accent: #6366f1;
    --accent-light: #818cf8;
    --accent-dark: #4f46e5;
    --accent-rgb: 99, 102, 241;

    /* Status Colors */
    --success: #22c55e;
    --error: #ef4444;
    --warning: #f59e0b;
    --info: #0ea5e9;

    /* Light Mode Colors */
    --bg-base: #f0f4f8;
    --bg-gradient-start: #e8f4fc;
    --bg-gradient-end: #fce7f3;
    --bg-pattern: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%236366f1' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");

    /* Glass Effect - Light */
    --glass-bg: rgba(255, 255, 255, 0.72);
    --glass-bg-solid: rgba(255, 255, 255, 0.92);
    --glass-border: rgba(255, 255, 255, 0.5);
    --glass-border-subtle: rgba(0, 0, 0, 0.06);
    --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.08), 0 2px 8px rgba(0, 0, 0, 0.04);
    --glass-shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.12), 0 4px 16px rgba(0, 0, 0, 0.06);
    --glass-blur: 20px;
    --glass-saturate: 180%;

    /* Text Colors - Light */
    --text-primary: #1a1a2e;
    --text-secondary: rgba(26, 26, 46, 0.6);
    --text-tertiary: rgba(26, 26, 46, 0.4);
    --text-inverse: #ffffff;

    /* Surface Colors */
    --surface-elevated: rgba(255, 255, 255, 0.8);
    --surface-hover: rgba(99, 102, 241, 0.08);
    --surface-active: rgba(99, 102, 241, 0.12);
    --surface-muted: rgba(0, 0, 0, 0.04);

    /* Dividers */
    --divider: rgba(0, 0, 0, 0.08);
    --divider-strong: rgba(0, 0, 0, 0.12);

    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 48px;

    /* Border radius - more rounded for liquid glass */
    --radius-sm: 12px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-xl: 32px;
    --radius-full: 9999px;

    /* Sidebar */
    --sidebar-width: 260px;

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.2s ease;
    --transition-slow: 0.3s ease;
}

/* ============================================
   Dark Mode Variables
   ============================================ */
[data-theme="dark"],
.dark-mode {
    --bg-base: #0a0a14;
    --bg-gradient-start: #0f0f1a;
    --bg-gradient-end: #1a0a1a;
    --bg-pattern: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%236366f1' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");

    /* Glass Effect - Dark */
    --glass-bg: rgba(30, 30, 50, 0.65);
    --glass-bg-solid: rgba(30, 30, 50, 0.88);
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-border-subtle: rgba(255, 255, 255, 0.05);
    --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.4), 0 2px 8px rgba(0, 0, 0, 0.2);
    --glass-shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.5), 0 4px 16px rgba(0, 0, 0, 0.3);

    /* Text Colors - Dark */
    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.65);
    --text-tertiary: rgba(255, 255, 255, 0.4);
    --text-inverse: #1a1a2e;

    /* Surface Colors */
    --surface-elevated: rgba(255, 255, 255, 0.06);
    --surface-hover: rgba(99, 102, 241, 0.15);
    --surface-active: rgba(99, 102, 241, 0.2);
    --surface-muted: rgba(255, 255, 255, 0.05);

    /* Dividers */
    --divider: rgba(255, 255, 255, 0.08);
    --divider-strong: rgba(255, 255, 255, 0.12);
}

/* Auto dark mode based on system preference */
@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
        --bg-base: #0a0a14;
        --bg-gradient-start: #0f0f1a;
        --bg-gradient-end: #1a0a1a;
        --bg-pattern: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%236366f1' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
        --glass-bg: rgba(30, 30, 50, 0.65);
        --glass-bg-solid: rgba(30, 30, 50, 0.88);
        --glass-border: rgba(255, 255, 255, 0.1);
        --glass-border-subtle: rgba(255, 255, 255, 0.05);
        --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.4), 0 2px 8px rgba(0, 0, 0, 0.2);
        --glass-shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.5), 0 4px 16px rgba(0, 0, 0, 0.3);
        --text-primary: #ffffff;
        --text-secondary: rgba(255, 255, 255, 0.65);
        --text-tertiary: rgba(255, 255, 255, 0.4);
        --text-inverse: #1a1a2e;
        --surface-elevated: rgba(255, 255, 255, 0.06);
        --surface-hover: rgba(99, 102, 241, 0.15);
        --surface-active: rgba(99, 102, 241, 0.2);
        --surface-muted: rgba(255, 255, 255, 0.05);
        --divider: rgba(255, 255, 255, 0.08);
        --divider-strong: rgba(255, 255, 255, 0.12);
    }
}

/* ============================================
   Base Styles
   ============================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
    background: var(--bg-base);
    background-image: linear-gradient(135deg, var(--bg-gradient-start) 0%, var(--bg-gradient-end) 100%);
    background-attachment: fixed;
    color: var(--text-primary);
    line-height: 1.5;
    min-height: 100vh;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: var(--bg-pattern);
    pointer-events: none;
    z-index: 0;
}

/* ============================================
   Glass Morphism Utilities
   ============================================ */
.glass {
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
    -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
}

.glass-solid {
    background: var(--glass-bg-solid);
    backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
    -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
}

.glass-subtle {
    background: var(--glass-bg);
    backdrop-filter: blur(12px) saturate(150%);
    -webkit-backdrop-filter: blur(12px) saturate(150%);
    border: 1px solid var(--glass-border-subtle);
}

/* ============================================
   App Shell
   ============================================ */
.app-shell {
    display: flex;
    min-height: 100vh;
    position: relative;
    z-index: 1;
}

/* ============================================
   Sidebar - Liquid Glass
   ============================================ */
.sidebar {
    width: var(--sidebar-width);
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
    -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
    border-right: 1px solid var(--glass-border);
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
    z-index: 100;
    box-shadow: 4px 0 24px rgba(0, 0, 0, 0.05);
}

.sidebar-header {
    padding: var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    border-bottom: 1px solid var(--divider);
}

.logo {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-md);
}

.logo-text {
    font-size: 22px;
    font-weight: 600;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

.sidebar-nav {
    flex: 1;
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    overflow-y: auto;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-lg);
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 15px;
    transition: all var(--transition-base);
    position: relative;
}

.nav-item:hover {
    background: var(--surface-hover);
    color: var(--text-primary);
}

.nav-item.active {
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
    color: white;
    box-shadow: 0 4px 16px rgba(var(--accent-rgb), 0.3);
}

.nav-item.active .nav-icon {
    color: white;
}

.nav-icon {
    width: 22px;
    height: 22px;
    flex-shrink: 0;
}

.sidebar-footer {
    padding: var(--spacing-md);
    border-top: 1px solid var(--divider);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.user-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    flex: 1;
    min-width: 0;
}

.user-avatar {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 16px;
    color: white;
    flex-shrink: 0;
}

.user-details {
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.user-name {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.user-email {
    font-size: 12px;
    color: var(--text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.logout-btn {
    padding: var(--spacing-sm);
    color: var(--text-secondary);
    transition: all var(--transition-base);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
}

.logout-btn:hover {
    color: var(--error);
    background: rgba(239, 68, 68, 0.1);
}

.logout-btn svg {
    width: 20px;
    height: 20px;
}

/* ============================================
   Main Content
   ============================================ */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    padding: var(--spacing-lg);
    min-height: 100vh;
    position: relative;
    z-index: 1;
}

/* ============================================
   Cards - Liquid Glass
   ============================================ */
.card {
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
    -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-lg);
    box-shadow: var(--glass-shadow);
    transition: all var(--transition-base);
}

.card:hover {
    box-shadow: var(--glass-shadow-lg);
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-md);
}

.card-title {
    font-size: 18px;
    font-weight: 600;
    letter-spacing: -0.01em;
}

.card-subtitle {
    font-size: 14px;
    color: var(--text-secondary);
    margin-top: var(--spacing-xs);
}

/* ============================================
   Buttons - Pill Style
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: 10px 20px;
    border-radius: var(--radius-full);
    font-family: inherit;
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: all var(--transition-base);
    border: none;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
    color: white;
    box-shadow: 0 4px 16px rgba(var(--accent-rgb), 0.3);
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(var(--accent-rgb), 0.4);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-secondary {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    color: var(--text-primary);
    border: 1px solid var(--glass-border);
}

.btn-secondary:hover {
    background: var(--surface-hover);
}

.btn-danger {
    background: linear-gradient(135deg, var(--error) 0%, #dc2626 100%);
    color: white;
    box-shadow: 0 4px 16px rgba(239, 68, 68, 0.3);
}

.btn-danger:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(239, 68, 68, 0.4);
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--divider-strong);
    color: var(--text-primary);
}

.btn-outline:hover {
    background: var(--surface-muted);
    border-color: var(--text-secondary);
}

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
}

.btn-ghost:hover {
    background: var(--surface-muted);
    color: var(--text-primary);
}

.btn-icon {
    padding: var(--spacing-sm);
    width: 40px;
    height: 40px;
}

.btn-sm {
    padding: 6px 14px;
    font-size: 13px;
}

.btn-lg {
    padding: 14px 28px;
    font-size: 16px;
}

/* ============================================
   Form Controls - Glass Style
   ============================================ */
.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-group label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
    letter-spacing: 0.01em;
}

.form-group small {
    display: block;
    margin-top: var(--spacing-xs);
    font-size: 12px;
    color: var(--text-tertiary);
}

.form-control {
    width: 100%;
    padding: 12px 16px;
    background: var(--surface-muted);
    border: 1px solid var(--divider);
    border-radius: var(--radius-lg);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 15px;
    transition: all var(--transition-base);
}

.form-control:focus {
    outline: none;
    border-color: var(--accent);
    background: var(--surface-elevated);
    box-shadow: 0 0 0 3px rgba(var(--accent-rgb), 0.15);
}

.form-control::placeholder {
    color: var(--text-tertiary);
}

.form-input {
    width: 100%;
    padding: 12px 16px;
    background: var(--surface-muted);
    border: 1px solid var(--divider);
    border-radius: var(--radius-lg);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 15px;
    transition: all var(--transition-base);
}

.form-input:focus {
    outline: none;
    border-color: var(--accent);
    background: var(--surface-elevated);
    box-shadow: 0 0 0 3px rgba(var(--accent-rgb), 0.15);
}

.form-select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%236366f1' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    padding-right: 44px;
}

/* Toggle Switch - Pill */
.toggle {
    position: relative;
    width: 52px;
    height: 32px;
}

.toggle input {
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--surface-muted);
    border: 1px solid var(--divider);
    border-radius: var(--radius-full);
    transition: var(--transition-base);
}

.toggle-slider:before {
    position: absolute;
    content: "";
    height: 26px;
    width: 26px;
    left: 2px;
    bottom: 2px;
    background: white;
    border-radius: 50%;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
    transition: var(--transition-base);
}

.toggle input:checked + .toggle-slider {
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
    border-color: transparent;
}

.toggle input:checked + .toggle-slider:before {
    transform: translateX(20px);
}

/* ============================================
   Flash Messages - Glass Pills
   ============================================ */
.flash {
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-full);
    margin-bottom: var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-md);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    animation: slideDown 0.3s ease;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.flash-success {
    background: rgba(34, 197, 94, 0.15);
    border: 1px solid rgba(34, 197, 94, 0.3);
    color: var(--success);
}

.flash-error {
    background: rgba(239, 68, 68, 0.15);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: var(--error);
}

.flash-warning {
    background: rgba(245, 158, 11, 0.15);
    border: 1px solid rgba(245, 158, 11, 0.3);
    color: var(--warning);
}

.flash-info {
    background: rgba(14, 165, 233, 0.15);
    border: 1px solid rgba(14, 165, 233, 0.3);
    color: var(--info);
}

.flash-close {
    background: none;
    border: none;
    color: inherit;
    font-size: 20px;
    cursor: pointer;
    padding: 0;
    line-height: 1;
    opacity: 0.7;
    transition: opacity var(--transition-fast);
}

.flash-close:hover {
    opacity: 1;
}

/* ============================================
   Page Header
   ============================================ */
.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-xl);
}

.page-title {
    font-size: 28px;
    font-weight: 600;
    letter-spacing: -0.02em;
    color: var(--text-primary);
}

.page-subtitle {
    font-size: 15px;
    color: var(--text-secondary);
    margin-top: var(--spacing-xs);
}

/* ============================================
   Tables - Glass Style
   ============================================ */
.table-wrapper {
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    overflow: hidden;
}

.table {
    width: 100%;
    border-collapse: collapse;
}

.table th,
.table td {
    padding: var(--spacing-md) var(--spacing-lg);
    text-align: left;
}

.table th {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    background: var(--surface-muted);
    border-bottom: 1px solid var(--divider);
}

.table td {
    border-bottom: 1px solid var(--divider);
}

.table tr:last-child td {
    border-bottom: none;
}

.table tr:hover td {
    background: var(--surface-hover);
}

/* ============================================
   Empty State
   ============================================ */
.empty-state {
    text-align: center;
    padding: var(--spacing-2xl) var(--spacing-lg);
}

.empty-state-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-lg);
    padding: var(--spacing-lg);
    background: var(--surface-muted);
    border-radius: var(--radius-xl);
    color: var(--accent);
}

.empty-state-icon svg {
    width: 100%;
    height: 100%;
}

.empty-state-title {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.empty-state-text {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    max-width: 360px;
    margin-left: auto;
    margin-right: auto;
}

/* ============================================
   Auth Pages - Glass Container
   ============================================ */
.auth-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
    position: relative;
    z-index: 1;
}

.auth-card {
    width: 100%;
    max-width: 440px;
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
    -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    box-shadow: var(--glass-shadow-lg);
}

.auth-logo {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.auth-logo img {
    width: 80px;
    height: 80px;
    border-radius: var(--radius-lg);
}

.auth-title {
    font-size: 28px;
    font-weight: 600;
    text-align: center;
    margin-bottom: var(--spacing-sm);
    letter-spacing: -0.02em;
}

.auth-subtitle {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
}

.auth-divider {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin: var(--spacing-lg) 0;
    color: var(--text-tertiary);
    font-size: 13px;
}

.auth-divider::before,
.auth-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--divider);
}

/* Social Login Buttons - Glass Pills */
.social-btn {
    width: 100%;
    padding: 14px var(--spacing-lg);
    border-radius: var(--radius-full);
    font-size: 15px;
    font-weight: 500;
    margin-bottom: var(--spacing-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    cursor: pointer;
    transition: all var(--transition-base);
    border: none;
    text-decoration: none;
}

.social-btn-apple {
    background: #000;
    color: #fff;
}

.social-btn-apple:hover {
    background: #1a1a1a;
    transform: translateY(-1px);
}

.social-btn-google {
    background: #fff;
    color: #333;
    border: 1px solid var(--divider-strong);
}

.social-btn-google:hover {
    background: #f8f8f8;
    transform: translateY(-1px);
}

.social-btn-microsoft {
    background: #2f2f2f;
    color: #fff;
}

.social-btn-microsoft:hover {
    background: #404040;
    transform: translateY(-1px);
}

.social-btn-email {
    background: var(--surface-muted);
    color: var(--text-primary);
    border: 1px solid var(--divider);
}

.social-btn-email:hover {
    background: var(--surface-hover);
    transform: translateY(-1px);
}

/* ============================================
   Calendar Views
   ============================================ */
.calendar-nav {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
}

.calendar-nav-tabs {
    display: flex;
    gap: var(--spacing-xs);
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    padding: var(--spacing-xs);
    border-radius: var(--radius-full);
    border: 1px solid var(--glass-border);
}

.calendar-nav-tab {
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-full);
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: all var(--transition-base);
}

.calendar-nav-tab:hover {
    color: var(--text-primary);
    background: var(--surface-hover);
}

.calendar-nav-tab.active {
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
    color: white;
    box-shadow: 0 2px 8px rgba(var(--accent-rgb), 0.3);
}

.calendar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-md);
}

.calendar-title {
    font-size: 22px;
    font-weight: 600;
    letter-spacing: -0.01em;
}

.calendar-date-nav {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.calendar-grid {
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--glass-shadow);
}

/* Day View */
.day-grid {
    display: grid;
    grid-template-columns: 60px 1fr;
}

.time-column {
    border-right: 1px solid var(--divider);
}

.time-slot {
    height: 52px;
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 11px;
    color: var(--text-tertiary);
    text-align: right;
    border-bottom: 1px solid var(--divider);
}

.events-column {
    position: relative;
}

.hour-row {
    height: 52px;
    border-bottom: 1px solid var(--divider);
}

.event-block {
    position: absolute;
    left: 4px;
    right: 4px;
    border-radius: var(--radius-md);
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 12px;
    overflow: hidden;
    cursor: pointer;
    transition: all var(--transition-fast);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.event-block:hover {
    transform: scale(1.02);
    z-index: 10;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
}

.event-title {
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.event-time {
    font-size: 11px;
    opacity: 0.8;
}

.current-time-indicator {
    position: absolute;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--error);
    z-index: 5;
}

.current-time-indicator::before {
    content: '';
    position: absolute;
    left: 0;
    top: -4px;
    width: 10px;
    height: 10px;
    background: var(--error);
    border-radius: 50%;
}

/* Week & Month View */
.week-grid, .month-grid {
    display: grid;
}

.week-grid {
    grid-template-columns: 60px repeat(7, 1fr);
}

.month-grid {
    grid-template-columns: repeat(7, 1fr);
}

.week-header-cell, .month-header-cell {
    padding: var(--spacing-md);
    text-align: center;
    border-bottom: 1px solid var(--divider);
    border-right: 1px solid var(--divider);
    background: var(--surface-muted);
}

.week-day-name, .month-header-cell {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.week-day-number {
    font-size: 18px;
    font-weight: 500;
    margin-top: var(--spacing-xs);
}

.week-day-number.today,
.month-day-number.today {
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
    color: white;
    border-radius: 50%;
    width: 32px;
    height: 32px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.month-day-cell {
    min-height: 110px;
    padding: var(--spacing-sm);
    border-bottom: 1px solid var(--divider);
    border-right: 1px solid var(--divider);
    transition: background var(--transition-fast);
}

.month-day-cell:hover {
    background: var(--surface-hover);
}

.month-day-number {
    font-size: 14px;
    font-weight: 500;
    margin-bottom: var(--spacing-xs);
}

.month-day-number.other-month {
    color: var(--text-tertiary);
}

.month-event {
    font-size: 11px;
    padding: 3px 6px;
    border-radius: var(--radius-sm);
    margin-bottom: 3px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    cursor: pointer;
    transition: opacity var(--transition-fast);
}

.month-event:hover {
    opacity: 0.85;
}

/* ============================================
   Account Cards - Glass
   ============================================ */
.account-card {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    margin-bottom: var(--spacing-md);
    transition: all var(--transition-base);
}

.account-card:hover {
    box-shadow: var(--glass-shadow-lg);
    transform: translateY(-2px);
}

.account-color {
    width: 6px;
    height: 100%;
    min-height: 56px;
    border-radius: var(--radius-full);
}

.account-info {
    flex: 1;
    min-width: 0;
}

.account-name {
    font-weight: 500;
    font-size: 15px;
    margin-bottom: var(--spacing-xs);
}

.account-provider {
    font-size: 13px;
    color: var(--text-secondary);
}

.account-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

/* ============================================
   Rule Cards - Glass
   ============================================ */
.rule-card {
    padding: var(--spacing-lg);
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    margin-bottom: var(--spacing-md);
    transition: all var(--transition-base);
}

.rule-card:hover {
    box-shadow: var(--glass-shadow-lg);
}

.rule-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-sm);
}

.rule-name {
    font-weight: 500;
    font-size: 16px;
}

.rule-description {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

.rule-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.rule-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 4px 12px;
    background: var(--surface-muted);
    border-radius: var(--radius-full);
    font-size: 12px;
    font-weight: 500;
    color: var(--text-secondary);
}

/* ============================================
   Device Cards - Glass
   ============================================ */
.device-card {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    margin-bottom: var(--spacing-md);
    transition: all var(--transition-base);
}

.device-card:hover {
    box-shadow: var(--glass-shadow-lg);
}

.device-icon {
    width: 48px;
    height: 48px;
    background: var(--surface-muted);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
}

.device-icon svg {
    width: 24px;
    height: 24px;
    color: var(--accent);
}

.device-info {
    flex: 1;
    min-width: 0;
}

.device-name {
    font-weight: 500;
    font-size: 15px;
    margin-bottom: var(--spacing-xs);
}

.device-meta {
    font-size: 13px;
    color: var(--text-secondary);
}

.device-status {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 12px;
    font-weight: 500;
}

.device-status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.device-status-dot.active {
    background: var(--success);
    box-shadow: 0 0 8px var(--success);
}

.device-status-dot.inactive {
    background: var(--text-tertiary);
}

/* ============================================
   Settings Menu - Glass Cards
   ============================================ */
.settings-menu {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.settings-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    color: var(--text-primary);
    text-decoration: none;
    transition: all var(--transition-base);
}

.settings-item:hover {
    background: var(--surface-hover);
    transform: translateX(4px);
}

.settings-item-icon {
    width: 44px;
    height: 44px;
    background: var(--surface-muted);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
}

.settings-item-icon svg {
    width: 22px;
    height: 22px;
    color: var(--accent);
}

.settings-item-content {
    flex: 1;
}

.settings-item-title {
    font-weight: 500;
    font-size: 15px;
}

.settings-item-description {
    font-size: 13px;
    color: var(--text-secondary);
    margin-top: 2px;
}

.settings-item-arrow {
    color: var(--text-tertiary);
}

/* ============================================
   Modal - Glass
   ============================================ */
.modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-slow);
}

.modal-backdrop.open {
    opacity: 1;
    visibility: visible;
}

.modal {
    background: var(--glass-bg-solid);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    max-width: 480px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    transform: scale(0.95) translateY(10px);
    transition: transform var(--transition-slow);
    box-shadow: var(--glass-shadow-lg);
}

.modal-backdrop.open .modal {
    transform: scale(1) translateY(0);
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-lg);
}

.modal-title {
    font-size: 20px;
    font-weight: 600;
}

.modal-close {
    background: var(--surface-muted);
    border: none;
    color: var(--text-secondary);
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.modal-close:hover {
    background: var(--surface-hover);
    color: var(--text-primary);
}

/* ============================================
   Color Picker - Glass Pills
   ============================================ */
.color-picker {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.color-option {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    cursor: pointer;
    border: 3px solid transparent;
    transition: all var(--transition-fast);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.color-option:hover {
    transform: scale(1.15);
}

.color-option.selected {
    border-color: var(--text-primary);
    transform: scale(1.15);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
}

/* Color Swatch for complete.twig */
.color-swatch {
    transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.color-swatch:hover {
    transform: scale(1.1);
}

input[type="radio"]:checked + .color-swatch {
    border-color: var(--text-primary) !important;
    transform: scale(1.1);
}

/* ============================================
   Loading Animation
   ============================================ */
.loading {
    display: inline-block;
    width: 24px;
    height: 24px;
    border: 3px solid var(--surface-muted);
    border-radius: 50%;
    border-top-color: var(--accent);
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ============================================
   Stats Cards (Dashboard)
   ============================================ */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.stat-card {
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    transition: all var(--transition-base);
}

.stat-card:hover {
    box-shadow: var(--glass-shadow-lg);
    transform: translateY(-2px);
}

.stat-icon {
    width: 52px;
    height: 52px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
}

.stat-icon svg {
    width: 26px;
    height: 26px;
    color: white;
}

.stat-icon.blue { background: linear-gradient(135deg, #0ea5e9, #0284c7); }
.stat-icon.green { background: linear-gradient(135deg, #22c55e, #16a34a); }
.stat-icon.purple { background: linear-gradient(135deg, var(--accent), var(--accent-dark)); }
.stat-icon.orange { background: linear-gradient(135deg, #f97316, #ea580c); }

.stat-content {
    flex: 1;
}

.stat-value {
    font-size: 28px;
    font-weight: 600;
    letter-spacing: -0.02em;
}

.stat-label {
    font-size: 13px;
    color: var(--text-secondary);
    margin-top: 2px;
}

/* ============================================
   Utility Classes
   ============================================ */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-muted { color: var(--text-secondary); }
.text-success { color: var(--success); }
.text-error { color: var(--error); }
.text-warning { color: var(--warning); }

.mt-xs { margin-top: var(--spacing-xs); }
.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }
.mb-xs { margin-bottom: var(--spacing-xs); }
.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }

.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-xs { gap: var(--spacing-xs); }
.gap-sm { gap: var(--spacing-sm); }
.gap-md { gap: var(--spacing-md); }
.gap-lg { gap: var(--spacing-lg); }

.grid { display: grid; }
.grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid-cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid-cols-4 { grid-template-columns: repeat(4, 1fr); }

.w-full { width: 100%; }
.h-full { height: 100%; }

/* ============================================
   Theme Toggle Button
   ============================================ */
.theme-toggle {
    position: fixed;
    bottom: var(--spacing-lg);
    right: var(--spacing-lg);
    width: 48px;
    height: 48px;
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 1000;
    transition: all var(--transition-base);
    box-shadow: var(--glass-shadow);
}

.theme-toggle:hover {
    transform: scale(1.1);
    box-shadow: var(--glass-shadow-lg);
}

.theme-toggle svg {
    width: 22px;
    height: 22px;
    color: var(--text-primary);
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 1024px) {
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    :root {
        --sidebar-width: 100%;
    }

    .sidebar {
        transform: translateX(-100%);
        transition: transform var(--transition-slow);
        width: 280px;
    }

    .sidebar.open {
        transform: translateX(0);
    }

    .main-content {
        margin-left: 0;
        padding: var(--spacing-md);
    }

    .page-title {
        font-size: 24px;
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }

    .calendar-nav {
        flex-direction: column;
        align-items: stretch;
    }

    .calendar-nav-tabs {
        justify-content: center;
    }

    .week-grid {
        grid-template-columns: 50px repeat(3, 1fr);
    }

    .month-day-cell {
        min-height: 70px;
    }

    .auth-card {
        padding: var(--spacing-lg);
    }

    .grid-cols-2,
    .grid-cols-3,
    .grid-cols-4 {
        grid-template-columns: 1fr;
    }
}

/* ============================================
   Scrollbar Styling
   ============================================ */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: var(--divider-strong);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-tertiary);
}

/* ============================================
   Selection
   ============================================ */
::selection {
    background: rgba(var(--accent-rgb), 0.3);
    color: var(--text-primary);
}

/* ============================================
   Print Styles
   ============================================ */
@media print {
    .sidebar,
    .theme-toggle {
        display: none;
    }

    .main-content {
        margin-left: 0;
    }

    .card,
    .account-card,
    .rule-card,
    .device-card {
        box-shadow: none;
        border: 1px solid #ddd;
    }
}