/* ========================================
   ADVANCED MOBILE-FIRST RESPONSIVE DASHBOARD
   Professional Healthcare Portal Design
   ======================================== */

:root {
    /* Color System */
    --primary-blue: #2563eb;
    --primary-dark: #1e40af;
    --primary-light: #60a5fa;
    --secondary-blue: #3b82f6;
    --success-green: #10b981;
    --danger-red: #ef4444;
    --warning-orange: #f59e0b;
    --purple: #8b5cf6;
    
    /* Neutrals */
    --white: #ffffff;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    
    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 0.75rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    
    /* Border Radius */
    --radius-sm: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    
    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--gray-50);
    color: var(--gray-900);
    line-height: 1.6;
    overflow-x: hidden;
}

/* ========================================
   MOBILE-FIRST LAYOUT
   ======================================== */

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

/* Mobile Header (Sticky Top Bar) */
.mobile-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-dark) 100%);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--space-md);
    z-index: 1000;
    box-shadow: var(--shadow-lg);
}

.mobile-header-left {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.menu-toggle {
    background: none;
    border: none;
    color: var(--white);
    font-size: 1.5rem;
    cursor: pointer;
    padding: var(--space-xs);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    transition: background var(--transition-fast);
}

.menu-toggle:active {
    background: rgba(255, 255, 255, 0.1);
}

.mobile-logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    color: var(--white);
    text-decoration: none;
}

.mobile-logo i {
    font-size: 1.75rem;
}

.mobile-logo-text {
    font-size: 1.1rem;
    font-weight: 700;
    display: none;
}

.mobile-header-right {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.mobile-icon-btn {
    background: rgba(255, 255, 255, 0.15);
    border: none;
    color: var(--white);
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 1.1rem;
    transition: all var(--transition-fast);
    position: relative;
}

.mobile-icon-btn:active {
    transform: scale(0.95);
}

.notification-badge {
    position: absolute;
    top: -2px;
    right: -2px;
    background: var(--danger-red);
    color: var(--white);
    width: 18px;
    height: 18px;
    border-radius: var(--radius-full);
    font-size: 0.7rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    border: 2px solid var(--primary-blue);
}

/* Sidebar Navigation */
.sidebar {
    position: fixed;
    top: 0;
    left: -100%;
    width: 280px;
    height: 100vh;
    background: linear-gradient(180deg, var(--primary-dark) 0%, #1e3a8a 100%);
    color: var(--white);
    overflow-y: auto;
    z-index: 2000;
    transition: left var(--transition-base);
    box-shadow: var(--shadow-xl);
}

.sidebar.active {
    left: 0;
}

.sidebar-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    opacity: 0;
    visibility: hidden;
    z-index: 1500;
    transition: all var(--transition-base);
}

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

.sidebar-header {
    padding: var(--space-xl) var(--space-lg);
    background: rgba(0, 0, 0, 0.2);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.sidebar-close {
    position: absolute;
    top: var(--space-md);
    right: var(--space-md);
    background: none;
    border: none;
    color: var(--white);
    font-size: 1.5rem;
    cursor: pointer;
    padding: var(--space-xs);
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
}

.hospital-logo {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.hospital-logo i {
    font-size: 2.5rem;
    color: var(--primary-light);
}

.hospital-info h1 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
}

.hospital-info p {
    font-size: 0.85rem;
    opacity: 0.9;
}

.user-profile {
    padding: var(--space-lg);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
}

.user-avatar {
    width: 70px;
    height: 70px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--primary-light), var(--secondary-blue));
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--space-md);
    font-size: 1.75rem;
    font-weight: 600;
    border: 3px solid rgba(255, 255, 255, 0.2);
}

.user-name {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.user-role {
    font-size: 0.85rem;
    opacity: 0.8;
    background: rgba(255, 255, 255, 0.1);
    padding: 0.35rem 1rem;
    border-radius: var(--radius-full);
    display: inline-block;
}

.nav-menu {
    padding: var(--space-md) 0;
}

.nav-item {
    display: flex;
    align-items: center;
    padding: var(--space-md) var(--space-lg);
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: all var(--transition-fast);
    gap: var(--space-md);
    font-size: 0.95rem;
    border-left: 3px solid transparent;
}

.nav-item:hover,
.nav-item.active {
    background: rgba(255, 255, 255, 0.1);
    color: var(--white);
    border-left-color: var(--primary-light);
}

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

/* Main Content Area */
.main-content {
    margin-top: 60px;
    padding: var(--space-lg) var(--space-md);
    min-height: calc(100vh - 60px);
}

/* Page Header */
.page-header {
    margin-bottom: var(--space-xl);
}

.page-title {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: var(--space-xs);
}

.page-subtitle {
    color: var(--gray-600);
    font-size: 0.95rem;
}

/* Stats Grid - Mobile First */
.stats-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-md);
    margin-bottom: var(--space-xl);
}

.stat-card {
    background: var(--white);
    padding: var(--space-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    display: flex;
    align-items: center;
    gap: var(--space-md);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.stat-card:active {
    transform: scale(0.98);
}

.stat-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.icon-blue {
    background: rgba(37, 99, 235, 0.1);
    color: var(--primary-blue);
}

.icon-green {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success-green);
}

.icon-red {
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger-red);
}

.icon-purple {
    background: rgba(139, 92, 246, 0.1);
    color: var(--purple);
}

.stat-content {
    flex: 1;
}

.stat-content h3 {
    font-size: 1.75rem;
    color: var(--gray-900);
    margin-bottom: 0.25rem;
    font-weight: 700;
}

.stat-content p {
    color: var(--gray-600);
    font-size: 0.9rem;
}

/* Action Cards */
.action-cards {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-md);
    margin-bottom: var(--space-xl);
}

.action-card {
    background: var(--white);
    padding: var(--space-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    text-align: center;
}

.action-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto var(--space-md);
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-dark) 100%);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    color: var(--white);
}

.action-card h3 {
    font-size: 1.25rem;
    color: var(--gray-900);
    margin-bottom: var(--space-sm);
}

.action-card p {
    color: var(--gray-600);
    font-size: 0.9rem;
    margin-bottom: var(--space-lg);
    line-height: 1.6;
}

.action-btn {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-dark) 100%);
    color: var(--white);
    border: none;
    padding: 0.85rem 1.75rem;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    transition: all var(--transition-base);
    width: 100%;
    max-width: 300px;
}

.action-btn:active {
    transform: scale(0.98);
}

/* Data Section */
.data-section {
    background: var(--white);
    padding: var(--space-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    margin-bottom: var(--space-xl);
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-lg);
    flex-wrap: wrap;
    gap: var(--space-md);
}

.section-header h2 {
    font-size: 1.25rem;
    color: var(--gray-900);
    font-weight: 700;
}

.view-all-btn {
    color: var(--primary-blue);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

/* Table - Mobile Optimized */
.table-container {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

thead {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--secondary-blue) 100%);
}

thead th {
    color: var(--white);
    padding: var(--space-md);
    text-align: left;
    font-weight: 600;
    white-space: nowrap;
}

tbody tr {
    border-bottom: 1px solid var(--gray-200);
    transition: background var(--transition-fast);
}

tbody tr:hover {
    background: var(--gray-50);
}

tbody td {
    padding: var(--space-md);
    color: var(--gray-700);
}

.risk-badge {
    display: inline-block;
    padding: 0.35rem 0.75rem;
    border-radius: var(--radius-full);
    font-size: 0.85rem;
    font-weight: 600;
}

.risk-high {
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger-red);
}

.risk-low {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success-green);
}

.action-links {
    display: flex;
    gap: var(--space-sm);
}

.action-link {
    color: var(--primary-blue);
    text-decoration: none;
    font-size: 1rem;
    transition: color var(--transition-fast);
}

.action-link:hover {
    color: var(--primary-dark);
}

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

.empty-icon {
    font-size: 4rem;
    color: var(--gray-300);
    margin-bottom: var(--space-lg);
}

.empty-state h3 {
    font-size: 1.25rem;
    color: var(--gray-900);
    margin-bottom: var(--space-sm);
}

.empty-state p {
    color: var(--gray-600);
    margin-bottom: var(--space-lg);
}

/* ========================================
   TABLET RESPONSIVE (768px+)
   ======================================== */
@media (min-width: 768px) {
    .mobile-logo-text {
        display: block;
    }

    .main-content {
        padding: var(--space-xl);
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .action-cards {
        grid-template-columns: repeat(2, 1fr);
    }

    .action-btn {
        width: auto;
    }

    .page-title {
        font-size: 2rem;
    }

    .stat-content h3 {
        font-size: 2rem;
    }

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

/* ========================================
   DESKTOP RESPONSIVE (1024px+)
   ======================================== */
@media (min-width: 1024px) {
    .mobile-header {
        display: none;
    }

    .sidebar {
        left: 0;
        transition: none;
    }

    .sidebar-close {
        display: none;
    }

    .sidebar-overlay {
        display: none;
    }

    .main-content {
        margin-left: 280px;
        margin-top: 0;
        padding: var(--space-2xl);
    }

    .stats-grid {
        grid-template-columns: repeat(4, 1fr);
    }

    .action-cards {
        grid-template-columns: repeat(3, 1fr);
    }

    .page-title {
        font-size: 2.25rem;
    }

    .data-section {
        padding: var(--space-xl);
    }
}

/* ========================================
   LARGE DESKTOP (1280px+)
   ======================================== */
@media (min-width: 1280px) {
    .main-content {
        max-width: 1400px;
        margin-left: 280px;
        margin-right: auto;
    }
}

/* ========================================
   ANIMATIONS
   ======================================== */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.5s ease-out;
}

@keyframes slideInLeft {
    from {
        transform: translateX(-100%);
    }
    to {
        transform: translateX(0);
    }
}

.sidebar.active {
    animation: slideInLeft var(--transition-base);
}

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

.font-bold { font-weight: 700; }
.font-semibold { font-weight: 600; }
.font-medium { font-weight: 500; }

.text-primary { color: var(--primary-blue); }
.text-success { color: var(--success-green); }
.text-danger { color: var(--danger-red); }
.text-gray { color: var(--gray-600); }

.mb-0 { margin-bottom: 0; }
.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); }

.mt-0 { margin-top: 0; }
.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); }