/* ==========================================
   NotifyPro SaaS - Modern UI Design System
   ========================================== */

/* CSS Variables / Design Tokens */
:root {
    /* Colors */
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --secondary: #ec4899;
    --accent: #06b6d4;
    
    /* Neutrals */
    --bg-dark: #0f172a;
    --bg-card: #1e293b;
    --bg-hover: #334155;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    
    /* Status */
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --info: #3b82f6;
    
    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -2px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.3), 0 4px 6px -4px rgba(0, 0, 0, 0.3);
    --shadow-glow: 0 0 20px rgba(99, 102, 241, 0.3);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 200ms ease;
    --transition-slow: 300ms ease;
    
    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
}

/* Reset & Base */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: var(--space-md);
}

h1 { font-size: 2.25rem; }
h2 { font-size: 1.875rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

p { margin-bottom: var(--space-md); }

a {
    color: var(--primary-light);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--primary);
}

/* Layout */
.app-wrapper {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: 260px;
    background: linear-gradient(180deg, var(--bg-card) 0%, var(--bg-dark) 100%);
    border-right: 1px solid rgba(255, 255, 255, 0.05);
    padding: var(--space-lg);
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
    z-index: 100;
}

.sidebar-logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    padding: var(--space-md) 0;
    margin-bottom: var(--space-lg);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.sidebar-logo span {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-section {
    margin-bottom: var(--space-xl);
}

.nav-section-title {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    padding: var(--space-sm) var(--space-md);
}

.nav-link {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md);
    border-radius: var(--radius-lg);
    color: var(--text-secondary);
    transition: all var(--transition-base);
    margin-bottom: var(--space-xs);
}

.nav-link:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
    transform: translateX(4px);
}

.nav-link.active {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    box-shadow: var(--shadow-glow);
}

.nav-link i {
    font-size: 1.25rem;
    width: 24px;
    text-align: center;
}

/* Main Content */
.main-content {
    flex: 1;
    margin-left: 260px;
    padding: var(--space-xl);
    min-height: 100vh;
}

/* Header */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-xl);
    padding-bottom: var(--space-lg);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.page-title {
    font-size: 1.875rem;
    font-weight: 700;
    margin: 0;
}

.page-subtitle {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-top: var(--space-xs);
}

/* Cards */
.card {
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    border: 1px solid rgba(255, 255, 255, 0.05);
    padding: var(--space-xl);
    transition: all var(--transition-base);
}

.card:hover {
    border-color: rgba(99, 102, 241, 0.3);
    box-shadow: var(--shadow-lg);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-md);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.card-title {
    font-size: 1.125rem;
    font-weight: 600;
    margin: 0;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: var(--space-lg);
    margin-bottom: var(--space-xl);
}

.stat-card {
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    border: 1px solid rgba(255, 255, 255, 0.05);
    display: flex;
    align-items: center;
    gap: var(--space-lg);
    transition: all var(--transition-base);
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.stat-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.stat-icon.primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
}

.stat-icon.success {
    background: linear-gradient(135deg, var(--success) 0%, #059669 100%);
}

.stat-icon.warning {
    background: linear-gradient(135deg, var(--warning) 0%, #d97706 100%);
}

.stat-icon.info {
    background: linear-gradient(135deg, var(--info) 0%, #2563eb 100%);
}

.stat-content h3 {
    font-size: 1.75rem;
    font-weight: 700;
    margin: 0;
}

.stat-content p {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin: 0;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-lg);
    border-radius: var(--radius-lg);
    font-weight: 500;
    font-size: 0.875rem;
    cursor: pointer;
    border: none;
    transition: all var(--transition-base);
    text-decoration: none;
}

.btn:hover {
    transform: translateY(-2px);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    box-shadow: var(--shadow-glow);
    color: white;
}

.btn-secondary {
    background: var(--bg-hover);
    color: var(--text-primary);
}

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

.btn-success {
    background: linear-gradient(135deg, var(--success) 0%, #059669 100%);
    color: white;
}

.btn-danger {
    background: linear-gradient(135deg, var(--danger) 0%, #dc2626 100%);
    color: white;
}

.btn-sm {
    padding: var(--space-sm) var(--space-md);
    font-size: 0.8rem;
}

.btn-icon {
    width: 36px;
    height: 36px;
    padding: 0;
    border-radius: var(--radius-md);
}

/* Forms */
.form-group {
    margin-bottom: var(--space-lg);
}

.form-label {
    display: block;
    font-weight: 500;
    margin-bottom: var(--space-sm);
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: var(--space-md);
    background: var(--bg-dark);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 0.875rem;
    transition: all var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

.form-input::placeholder {
    color: var(--text-muted);
}

.form-textarea {
    min-height: 100px;
    resize: vertical;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-lg);
}

.form-hint {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: var(--space-xs);
}

/* Color Input */
.color-input-wrapper {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.color-input {
    width: 40px;
    height: 40px;
    padding: 0;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
}

/* Tables */
.table-wrapper {
    overflow-x: auto;
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

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

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

.table th {
    background: var(--bg-hover);
    font-weight: 600;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
}

.table td {
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.table tbody tr {
    transition: background var(--transition-fast);
}

.table tbody tr:hover {
    background: rgba(255, 255, 255, 0.02);
}

.table-actions {
    display: flex;
    gap: var(--space-sm);
}

/* Badges */
.badge {
    display: inline-flex;
    align-items: center;
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 500;
}

.badge-primary {
    background: rgba(99, 102, 241, 0.2);
    color: var(--primary-light);
}

.badge-success {
    background: rgba(16, 185, 129, 0.2);
    color: var(--success);
}

.badge-warning {
    background: rgba(245, 158, 11, 0.2);
    color: var(--warning);
}

.badge-danger {
    background: rgba(239, 68, 68, 0.2);
    color: var(--danger);
}

/* Pagination */
.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-md);
    margin-top: var(--space-xl);
    padding-top: var(--space-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.page-link {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    background: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-size: 0.875rem;
    transition: all var(--transition-fast);
}

.page-link:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.page-numbers {
    display: flex;
    gap: var(--space-xs);
}

.page-num {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-size: 0.875rem;
    transition: all var(--transition-fast);
}

.page-num:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.page-num.active {
    background: var(--primary);
    color: white;
}

.page-dots {
    color: var(--text-muted);
    padding: 0 var(--space-sm);
}

/* Alerts */
.alert {
    padding: var(--space-md) var(--space-lg);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-lg);
    display: flex;
    align-items: center;
    gap: var(--space-md);
    animation: slideIn 0.3s ease;
}

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

.alert-success {
    background: rgba(16, 185, 129, 0.15);
    border: 1px solid rgba(16, 185, 129, 0.3);
    color: var(--success);
}

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

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

.alert-info {
    background: rgba(59, 130, 246, 0.15);
    border: 1px solid rgba(59, 130, 246, 0.3);
    color: var(--info);
}

/* Modal */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal {
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    border: 1px solid rgba(255, 255, 255, 0.1);
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    transform: scale(0.9);
    transition: transform var(--transition-base);
}

.modal-overlay.active .modal {
    transform: scale(1);
}

.modal-header {
    padding: var(--space-lg);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin: 0;
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 1.5rem;
    transition: color var(--transition-fast);
}

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

.modal-body {
    padding: var(--space-lg);
}

.modal-footer {
    padding: var(--space-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    display: flex;
    justify-content: flex-end;
    gap: var(--space-md);
}

/* Code Block */
.code-block {
    background: var(--bg-dark);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    position: relative;
    margin: var(--space-md) 0;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.code-block pre {
    margin: 0;
    overflow-x: auto;
}

.code-block code {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--accent);
}

.code-copy {
    position: absolute;
    top: var(--space-sm);
    right: var(--space-sm);
}

/* Tabs */
.tabs {
    display: flex;
    gap: var(--space-xs);
    margin-bottom: var(--space-lg);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    padding-bottom: var(--space-xs);
}

.tab {
    padding: var(--space-md) var(--space-lg);
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: var(--radius-md) var(--radius-md) 0 0;
    transition: all var(--transition-fast);
}

.tab:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.05);
}

.tab.active {
    color: var(--primary-light);
    border-bottom: 2px solid var(--primary);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* Widget Preview */
.widget-preview {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: var(--radius-xl);
    padding: var(--space-2xl);
    display: flex;
    align-items: flex-end;
    justify-content: flex-start;
    min-height: 300px;
    position: relative;
}

.notification-popup {
    background: white;
    border-radius: var(--radius-lg);
    padding: var(--space-md) var(--space-lg);
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: var(--space-md);
    max-width: 320px;
    animation: popIn 0.5s ease;
}

@keyframes popIn {
    0% {
        opacity: 0;
        transform: translateY(20px) scale(0.95);
    }
    100% {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.notification-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--success) 0%, #059669 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    flex-shrink: 0;
}

.notification-content {
    color: #333;
}

.notification-content p {
    margin: 0;
    font-size: 0.875rem;
}

.notification-content .time {
    font-size: 0.75rem;
    color: #888;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: var(--space-2xl);
    color: var(--text-secondary);
}

.empty-state i {
    font-size: 4rem;
    margin-bottom: var(--space-lg);
    color: var(--text-muted);
}

.empty-state h3 {
    margin-bottom: var(--space-sm);
}

.empty-state p {
    margin-bottom: var(--space-lg);
}

/* Toggle Switch */
.toggle {
    position: relative;
    width: 48px;
    height: 24px;
}

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

.toggle-slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg-hover);
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
}

.toggle-slider::before {
    content: '';
    position: absolute;
    height: 18px;
    width: 18px;
    left: 3px;
    bottom: 3px;
    background: white;
    border-radius: 50%;
    transition: all var(--transition-base);
}

.toggle input:checked + .toggle-slider {
    background: var(--primary);
}

.toggle input:checked + .toggle-slider::before {
    transform: translateX(24px);
}

/* Avatar */
.avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.875rem;
    color: white;
}

.avatar-sm {
    width: 32px;
    height: 32px;
    font-size: 0.75rem;
}

/* Footer */
.footer {
    margin-top: auto;
    padding: var(--space-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    text-align: center;
    color: var(--text-muted);
    font-size: 0.8rem;
}

/* Auth Pages */
.auth-wrapper {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-lg);
    background: linear-gradient(135deg, var(--bg-dark) 0%, #1a1a2e 50%, var(--bg-dark) 100%);
}

.auth-card {
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: var(--space-2xl);
    width: 100%;
    max-width: 420px;
    box-shadow: var(--shadow-lg);
}

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

.auth-logo h1 {
    font-size: 2rem;
    margin: 0;
}

.auth-logo h1 span {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.auth-title h2 {
    font-size: 1.5rem;
    margin-bottom: var(--space-xs);
}

.auth-title p {
    color: var(--text-secondary);
    margin: 0;
}

.auth-footer {
    text-align: center;
    margin-top: var(--space-lg);
    padding-top: var(--space-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* Responsive */
@media (max-width: 768px) {
    .sidebar {
        width: 100%;
        height: auto;
        position: relative;
        padding: var(--space-md);
    }
    
    .main-content {
        margin-left: 0;
        padding: var(--space-md);
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .page-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-md);
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .table-wrapper {
        font-size: 0.8rem;
    }
    
    .table th,
    .table td {
        padding: var(--space-sm);
    }
}

/* Utilities */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-muted { color: var(--text-muted); }
.text-success { color: var(--success); }
.text-danger { color: var(--danger); }
.text-warning { color: var(--warning); }

.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }

.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.mb-xl { margin-bottom: var(--space-xl); }

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

.w-full { width: 100%; }
.hidden { display: none; }