/* ========================================
   Apple Design System - Surveillance MVP
   ======================================== */

/* CSS Variables */
:root {
    /* Spacing - 8px grid system */
    --spacing-1: 4px;
    --spacing-2: 8px;
    --spacing-3: 12px;
    --spacing-4: 16px;
    --spacing-6: 24px;
    --spacing-8: 32px;
    --spacing-12: 48px;
    
    /* Colors - Apple System */
    --color-primary: #007AFF;
    --color-success: #34C759;
    --color-warning: #FF9500;
    --color-danger: #FF3B30;
    --color-yellow: #FFCC00;
    
    /* Grays */
    --gray-1: #000000;
    --gray-2: rgba(60, 60, 67, 0.6);
    --gray-3: rgba(60, 60, 67, 0.3);
    --gray-4: #F2F2F7;
    --gray-5: #E5E5EA;
    --gray-6: #8E8E93;
    --white: #FFFFFF;
    
    /* Border Radius */
    --radius-small: 8px;
    --radius-medium: 12px;
    --radius-large: 16px;
    
    /* Shadows */
    --shadow-small: 0 2px 8px rgba(0,0,0,0.04);
    --shadow-medium: 0 4px 12px rgba(0,0,0,0.08);
    
    /* Transitions */
    --transition-fast: 100ms ease-in-out;
    --transition-normal: 200ms ease-in-out;
    --transition-slow: 300ms ease-in-out;
}

/* ========================================
   Base Typography & Body
   ======================================== */
body {
    font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Text', 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    font-size: 16px;
    line-height: 1.5;
    color: var(--gray-1);
    background: var(--gray-4);
}

/* Typography Scale */
.text-hero {
    font-size: 36px;
    font-weight: 700;
    line-height: 1.2;
    font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}

.text-title-1 {
    font-size: 28px;
    font-weight: 700;
    line-height: 1.3;
}

.text-title-2 {
    font-size: 22px;
    font-weight: 700;
    line-height: 1.3;
}

.text-title-3 {
    font-size: 20px;
    font-weight: 600;
    line-height: 1.4;
}

.text-body {
    font-size: 16px;
    font-weight: 400;
    line-height: 1.5;
}

.text-callout {
    font-size: 15px;
    font-weight: 400;
    line-height: 1.4;
}

.text-subhead {
    font-size: 14px;
    font-weight: 400;
    line-height: 1.4;
}

.text-footnote {
    font-size: 13px;
    font-weight: 400;
    line-height: 1.4;
}

.text-caption {
    font-size: 12px;
    font-weight: 400;
    line-height: 1.3;
}

/* ========================================
   Apple Header
   ======================================== */
.apple-header {
    background: var(--white);
    border-bottom: 1px solid var(--gray-5);
    padding: var(--spacing-4) var(--spacing-8);
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-small);
    gap: var(--spacing-4);
}

.apple-header .header-left {
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
}

.apple-header .menu-toggle {
    font-size: 24px;
    border: none;
    background: none;
    cursor: pointer;
    padding: var(--spacing-2);
    color: var(--gray-1);
    transition: background var(--transition-normal);
    border-radius: var(--radius-small);
}

.apple-header .menu-toggle:hover {
    background: var(--gray-4);
}

.apple-header .page-title {
    font-size: 20px;
    font-weight: 600;
    color: var(--gray-1);
}

.apple-header .header-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
}

.apple-header .icon-button {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: none;
    background: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background var(--transition-normal);
    font-size: 16px;
}

.apple-header .icon-button:hover {
    background: var(--gray-4);
}

.apple-header .user-name {
    font-size: 15px;
    font-weight: 500;
    color: var(--gray-1);
}

/* ========================================
   Apple Sidebar
   ======================================== */
.apple-sidebar {
    position: fixed;
    left: -280px;
    top: 0;
    width: 280px;
    height: 100vh;
    background: var(--white);
    box-shadow: var(--shadow-medium);
    transition: left var(--transition-slow);
    z-index: 200;
    padding: var(--spacing-6);
    overflow-y: auto;
}

.apple-sidebar.open {
    left: 0;
}

.apple-sidebar-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.3);
    z-index: 150;
    display: none;
    backdrop-filter: blur(4px);
}

.apple-sidebar-overlay.show {
    display: block;
}

.apple-sidebar .sidebar-header {
    padding: var(--spacing-4) 0;
    border-bottom: 1px solid var(--gray-5);
    margin-bottom: var(--spacing-4);
}

.apple-sidebar .sidebar-logo {
    font-size: 20px;
    font-weight: 700;
    color: var(--color-primary);
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

.apple-sidebar .sidebar-logo i {
    font-size: 24px;
}

.apple-sidebar .sidebar-section {
    margin-bottom: var(--spacing-6);
}

.apple-sidebar .sidebar-section-title {
    font-size: 13px;
    font-weight: 600;
    color: var(--gray-2);
    margin-bottom: var(--spacing-2);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 0 var(--spacing-2);
}

.apple-sidebar .sidebar-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    padding: var(--spacing-3) var(--spacing-4);
    border-radius: var(--radius-small);
    text-decoration: none;
    color: var(--gray-1);
    transition: background var(--transition-normal);
    font-size: 15px;
    margin-bottom: var(--spacing-1);
}

.apple-sidebar .sidebar-link:hover {
    background: var(--gray-4);
}

.apple-sidebar .sidebar-link.active {
    background: var(--color-primary);
    color: var(--white);
}

.apple-sidebar .sidebar-icon {
    font-size: 18px;
    width: 24px;
    text-align: center;
    display: flex;
    align-items: center;
    justify-content: center;
    color: inherit;
}

.apple-sidebar .sidebar-icon i {
    font-size: 18px;
}

/* ========================================
   Cards
   ======================================== */
.apple-card {
    background: var(--white);
    border-radius: var(--radius-medium);
    box-shadow: var(--shadow-small);
    overflow: hidden;
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.apple-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

.apple-card-header {
    padding: var(--spacing-4);
    border-bottom: 1px solid var(--gray-5);
    font-weight: 600;
    font-size: 16px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.apple-card-body {
    padding: var(--spacing-4);
}

.apple-card-footer {
    padding: var(--spacing-4);
    border-top: 1px solid var(--gray-5);
    background: var(--gray-4);
}

/* Card Badge */
.card-badge {
    background: var(--gray-4);
    color: var(--gray-2);
    padding: 4px 12px;
    border-radius: var(--radius-small);
    font-size: 13px;
    font-weight: 500;
}

/* ========================================
   Status Indicators
   ======================================== */
.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    display: inline-block;
    margin-right: var(--spacing-1);
}

.status-dot.critical {
    background: var(--color-danger);
}

.status-dot.warning {
    background: var(--color-warning);
}

.status-dot.attention {
    background: var(--color-yellow);
}

.status-dot.normal {
    background: var(--color-success);
}

.status-dot.inactive {
    background: var(--gray-6);
}

/* Status Badge */
.status-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-1);
    padding: 4px 12px;
    border-radius: var(--radius-small);
    font-size: 13px;
    font-weight: 500;
}

.status-badge.critical {
    background: rgba(255, 59, 48, 0.1);
    color: var(--color-danger);
}

.status-badge.warning {
    background: rgba(255, 149, 0, 0.1);
    color: var(--color-warning);
}

.status-badge.attention {
    background: rgba(255, 204, 0, 0.1);
    color: var(--color-yellow);
}

.status-badge.normal {
    background: rgba(52, 199, 89, 0.1);
    color: var(--color-success);
}

/* ========================================
   Buttons
   ======================================== */
.btn-apple {
    padding: var(--spacing-2) var(--spacing-4);
    border-radius: var(--radius-small);
    border: none;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-normal);
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-2);
    text-decoration: none;
}

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

.btn-apple-primary:hover {
    background: #0051D5;
}

.btn-apple-secondary {
    background: var(--gray-4);
    color: var(--gray-1);
}

.btn-apple-secondary:hover {
    background: var(--gray-5);
}

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

.btn-apple-danger:hover {
    background: #D32F2F;
}

.btn-apple-link {
    background: none;
    color: var(--color-primary);
    padding: var(--spacing-2);
}

.btn-apple-link:hover {
    text-decoration: underline;
}

/* ========================================
   Stats Grid
   ======================================== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-4);
    margin-bottom: var(--spacing-6);
}

.stat-card {
    background: var(--white);
    border-radius: var(--radius-medium);
    padding: var(--spacing-6);
    box-shadow: var(--shadow-small);
    text-align: center;
    transition: transform var(--transition-normal);
}

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

.stat-icon {
    font-size: 32px;
    margin-bottom: var(--spacing-2);
}

.stat-value {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: var(--spacing-1);
    color: var(--gray-1);
}

.stat-label {
    font-size: 15px;
    color: var(--gray-2);
}

/* ========================================
   Tables
   ======================================== */
.apple-table-container {
    background: var(--white);
    border-radius: var(--radius-medium);
    box-shadow: var(--shadow-small);
    overflow: hidden;
}

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

.apple-table thead {
    background: var(--gray-4);
}

.apple-table th {
    padding: var(--spacing-3) var(--spacing-4);
    text-align: left;
    font-weight: 600;
    font-size: 14px;
    color: var(--gray-2);
    border-bottom: 1px solid var(--gray-5);
}

.apple-table td {
    padding: var(--spacing-4);
    border-bottom: 1px solid var(--gray-5);
    vertical-align: top;
}

.apple-table tbody tr:hover {
    background: #F9F9F9;
    cursor: pointer;
}

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

/* ========================================
   Forms
   ======================================== */
.apple-form-group {
    margin-bottom: var(--spacing-4);
}

.apple-form-label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    margin-bottom: var(--spacing-2);
    color: var(--gray-1);
}

.apple-form-input {
    width: 100%;
    padding: var(--spacing-3) var(--spacing-4);
    border: 1px solid var(--gray-5);
    border-radius: var(--radius-medium);
    font-size: 15px;
    background: var(--white);
    transition: all var(--transition-normal);
}

.apple-form-input:focus {
    outline: 2px solid var(--color-primary);
    border-color: var(--color-primary);
}

.apple-form-select {
    width: 100%;
    padding: var(--spacing-3) var(--spacing-4);
    border: 1px solid var(--gray-5);
    border-radius: var(--radius-medium);
    font-size: 15px;
    background: var(--white);
    transition: all var(--transition-normal);
}

.apple-form-select:focus {
    outline: 2px solid var(--color-primary);
    border-color: var(--color-primary);
}

/* ========================================
   Container & Layout
   ======================================== */
.apple-container {
    max-width: 3840px; /* Support ultra-wide and 4K displays */
    margin: 0 auto;
    padding: var(--spacing-8);
    padding-top: 80px; /* Account for fixed header */
    min-height: 100vh;
    background: var(--gray-4);
}

/* Responsive max-widths for better readability on different screens */
@media (min-width: 3840px) {
    .apple-container {
        max-width: 100%; /* No limit on ultra-wide displays */
        padding-left: var(--spacing-8);
        padding-right: var(--spacing-8);
    }
}

@media (min-width: 2560px) and (max-width: 3839px) {
    .apple-container {
        max-width: 3200px; /* 2K/QHD displays */
    }
}

@media (min-width: 1920px) and (max-width: 2559px) {
    .apple-container {
        max-width: 1920px; /* Full HD displays */
    }
}

@media (min-width: 1440px) and (max-width: 1919px) {
    .apple-container {
        max-width: 1440px; /* Standard laptop displays */
    }
}

.apple-page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-6);
}

.apple-page-title {
    font-size: 28px;
    font-weight: 700;
    color: var(--gray-1);
}

/* Grid Layouts */
.apple-grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-6);
}

.apple-grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-6);
}

/* ========================================
   Utilities
   ======================================== */
.text-muted {
    color: var(--gray-2);
}

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

.text-danger {
    color: var(--color-danger);
}

.text-success {
    color: var(--color-success);
}

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--spacing-1); }
.mb-2 { margin-bottom: var(--spacing-2); }
.mb-3 { margin-bottom: var(--spacing-3); }
.mb-4 { margin-bottom: var(--spacing-4); }
.mb-6 { margin-bottom: var(--spacing-6); }
.mb-8 { margin-bottom: var(--spacing-8); }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--spacing-1); }
.mt-2 { margin-top: var(--spacing-2); }
.mt-3 { margin-top: var(--spacing-3); }
.mt-4 { margin-top: var(--spacing-4); }
.mt-6 { margin-top: var(--spacing-6); }
.mt-8 { margin-top: var(--spacing-8); }

/* ========================================
   Responsive
   ======================================== */
@media (max-width: 1200px) {
    .apple-grid-3 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .apple-container {
        padding: var(--spacing-4);
    }
    
    .apple-grid-2,
    .apple-grid-3 {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .apple-header {
        padding: var(--spacing-3) var(--spacing-4);
    }
    
    .apple-header .user-name {
        display: none;
    }
}