/**
 * MultiPad - Main Stylesheet
 * 
 * @package MultiPad
 * @version 2.0.0
 */

/* ============================================
   CSS CUSTOM PROPERTIES (Variables)
   ============================================ */
:root {
    /* Colors - Primary */
    --primary-100: #E3F2FD;
    --primary-200: #90CAF9;
    --primary-300: #64B5F6;
    --primary-400: #42A5F5;
    --primary-500: #2196F3;
    --primary-600: #1E88E5;
    --primary-700: #1976D2;
    --primary-800: #1565C0;
    --primary-900: #0D47A1;
    
    /* Colors - Dark Theme */
    --dark-bg: #0a0f1a;
    --dark-surface: #111827;
    --dark-surface-light: #1f2937;
    --dark-border: #374151;
    --dark-text: #f9fafb;
    --dark-text-secondary: #9ca3af;
    --dark-text-muted: #6b7280;
    
    /* Accent Colors */
    --accent-success: #10b981;
    --accent-warning: #f59e0b;
    --accent-danger: #ef4444;
    --accent-info: #3b82f6;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-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 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 350ms ease;
    
    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
    
    /* Layout */
    --header-height: 60px;
    --footer-height: 60px;
    --sidebar-width: 280px;
}

/* ============================================
   RESET & BASE STYLES
   ============================================ */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

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

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

/* Hide scrollbar but keep functionality */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--dark-surface);
}

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

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

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

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.125rem; }
h6 { font-size: 1rem; }

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

a {
    color: var(--primary-400);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--primary-300);
}

/* ============================================
   LAYOUT COMPONENTS
   ============================================ */
.container {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.page-wrapper {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.main-content {
    flex: 1;
    padding: var(--spacing-xl);
}

/* ============================================
   HEADER
   ============================================ */
.header {
    background: linear-gradient(135deg, var(--primary-900), var(--primary-800));
    height: var(--header-height);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--spacing-xl);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-lg);
}

.header__logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.header__logo img {
    height: 36px;
}

.header__logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    color: white;
}

.header__nav {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.header__nav-item {
    color: rgba(255, 255, 255, 0.9);
    font-weight: 500;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.header__nav-item:hover {
    background: rgba(255, 255, 255, 0.1);
    color: white;
}

.header__clock {
    font-family: var(--font-mono);
    font-size: 1.125rem;
    color: white;
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
    background: var(--dark-surface);
    height: var(--footer-height);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--spacing-xl);
    border-top: 1px solid var(--dark-border);
}

.footer__org {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    cursor: pointer;
    padding: var(--spacing-sm);
    border-radius: var(--radius-md);
    transition: background var(--transition-fast);
}

.footer__org:hover {
    background: var(--dark-surface-light);
}

.footer__org-logo {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    object-fit: cover;
}

.footer__org-name {
    font-weight: 600;
}

.footer__user {
    text-align: right;
}

.footer__user-name {
    font-weight: 600;
}

.footer__user-rank {
    font-size: 0.875rem;
    color: var(--dark-text-secondary);
}

/* ============================================
   CARDS
   ============================================ */
.card {
    background: var(--dark-surface);
    border-radius: var(--radius-lg);
    border: 1px solid var(--dark-border);
    overflow: hidden;
    transition: all var(--transition-normal);
}

.card:hover {
    border-color: var(--primary-600);
    box-shadow: var(--shadow-lg);
}

.card__header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--dark-border);
}

.card__title {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0;
}

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

.card__footer {
    padding: var(--spacing-lg);
    border-top: 1px solid var(--dark-border);
    background: var(--dark-surface-light);
}

/* ============================================
   APP GRID (Menu)
   ============================================ */
.app-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: var(--spacing-lg);
    padding: var(--spacing-xl);
}

.app-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-normal);
    text-align: center;
    position: relative;
}

.app-item:hover {
    background: rgba(255, 255, 255, 0.05);
    transform: translateY(-4px);
}

.app-item__icon {
    width: 72px;
    height: 72px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-normal);
}

.app-item:hover .app-item__icon {
    transform: scale(1.05);
}

.app-item__name {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--dark-text);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
}

.app-item__badge {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    min-width: 24px;
    height: 24px;
    background: var(--accent-danger);
    color: white;
    font-size: 0.75rem;
    font-weight: 700;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 var(--spacing-xs);
}

.app-item__badge--urgent {
    animation: pulse 1s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: 0.9375rem;
    font-weight: 500;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn--primary {
    background: var(--primary-600);
    color: white;
}

.btn--primary:hover:not(:disabled) {
    background: var(--primary-700);
}

.btn--secondary {
    background: var(--dark-surface-light);
    color: var(--dark-text);
    border: 1px solid var(--dark-border);
}

.btn--secondary:hover:not(:disabled) {
    background: var(--dark-border);
}

.btn--danger {
    background: var(--accent-danger);
    color: white;
}

.btn--danger:hover:not(:disabled) {
    background: #dc2626;
}

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

.btn--ghost:hover:not(:disabled) {
    background: var(--dark-surface-light);
}

.btn--sm {
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: 0.875rem;
}

.btn--lg {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 1rem;
}

/* ============================================
   FORMS
   ============================================ */
.form-group {
    margin-bottom: var(--spacing-lg);
}

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

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 1rem;
    font-family: inherit;
    color: var(--dark-text);
    background: var(--dark-surface);
    border: 1px solid var(--dark-border);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--primary-500);
    box-shadow: 0 0 0 3px rgba(33, 150, 243, 0.2);
}

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

.form-textarea {
    min-height: 120px;
    resize: vertical;
}

.form-checkbox {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    cursor: pointer;
}

.form-checkbox input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--primary-500);
}

/* ============================================
   TABLES
   ============================================ */
.table-wrapper {
    overflow-x: auto;
    border-radius: var(--radius-lg);
    border: 1px solid var(--dark-border);
}

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

.table th,
.table td {
    padding: var(--spacing-md);
    text-align: left;
    border-bottom: 1px solid var(--dark-border);
}

.table th {
    background: var(--dark-surface-light);
    font-weight: 600;
    font-size: 0.875rem;
    color: var(--dark-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

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

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

/* ============================================
   ALERTS / NOTIFICATIONS
   ============================================ */
.alert {
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.alert--success {
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid var(--accent-success);
    color: var(--accent-success);
}

.alert--warning {
    background: rgba(245, 158, 11, 0.1);
    border: 1px solid var(--accent-warning);
    color: var(--accent-warning);
}

.alert--danger {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid var(--accent-danger);
    color: var(--accent-danger);
}

.alert--info {
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid var(--accent-info);
    color: var(--accent-info);
}

/* ============================================
   BADGES
   ============================================ */
.badge {
    display: inline-flex;
    align-items: center;
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: var(--radius-full);
}

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

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

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

.badge--info {
    background: rgba(59, 130, 246, 0.2);
    color: var(--accent-info);
}

/* ============================================
   LOADING / SPINNER
   ============================================ */
.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--dark-border);
    border-top-color: var(--primary-500);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

.loading-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

/* ============================================
   UTILITIES
   ============================================ */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.text-primary { color: var(--primary-500); }
.text-success { color: var(--accent-success); }
.text-warning { color: var(--accent-warning); }
.text-danger { color: var(--accent-danger); }
.text-muted { color: var(--dark-text-muted); }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }
.mt-4 { margin-top: var(--spacing-xl); }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }
.mb-4 { margin-bottom: var(--spacing-xl); }

.p-0 { padding: 0; }
.p-1 { padding: var(--spacing-sm); }
.p-2 { padding: var(--spacing-md); }
.p-3 { padding: var(--spacing-lg); }
.p-4 { padding: var(--spacing-xl); }

.d-flex { display: flex; }
.d-grid { display: grid; }
.d-none { display: none; }
.d-block { display: block; }

.flex-center {
    display: flex;
    align-items: center;
    justify-content: center;
}

.flex-between {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.gap-1 { gap: var(--spacing-sm); }
.gap-2 { gap: var(--spacing-md); }
.gap-3 { gap: var(--spacing-lg); }

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

.rounded { border-radius: var(--radius-md); }
.rounded-lg { border-radius: var(--radius-lg); }
.rounded-full { border-radius: var(--radius-full); }

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 768px) {
    :root {
        --header-height: 56px;
        --footer-height: 56px;
    }
    
    .header {
        padding: 0 var(--spacing-md);
    }
    
    .header__nav {
        display: none;
    }
    
    .app-grid {
        grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
        gap: var(--spacing-md);
        padding: var(--spacing-md);
    }
    
    .app-item__icon {
        width: 60px;
        height: 60px;
    }
    
    .footer {
        padding: 0 var(--spacing-md);
    }
    
    .footer__org-name,
    .footer__user-rank {
        display: none;
    }
}

/* ============================================
   POWERED BY BADGE
   ============================================ */
.powered-by {
    position: fixed;
    bottom: var(--footer-height);
    right: 0;
    background: linear-gradient(135deg, var(--primary-700), var(--primary-800));
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: 0.75rem;
    border-top-left-radius: var(--radius-md);
    z-index: 50;
    opacity: 0.9;
    transition: opacity var(--transition-fast);
}

.powered-by:hover {
    opacity: 1;
}

.powered-by a {
    color: white;
}