/* ========================================
   Intelligent Assessment Assistant - Design System
   Extracted from Figma designs
   ======================================== */

/* ========================================
   CSS Variables - Color Palette
   ======================================== */
:root {
    /* Indigo - Primary */
    --color-indigo-50: #eef2ff;
    --color-indigo-100: #e0e7ff;
    --color-indigo-200: #c7d2fe;
    --color-indigo-500: #6366f1;
    --color-indigo-600: #4f46e5;
    --color-indigo-700: #4338ca;
    --color-indigo-900: #312e81;

    /* Purple - Accent */
    --color-purple-50: #faf5ff;
    --color-purple-100: #f3e8ff;
    --color-purple-500: #a855f7;
    --color-purple-600: #9333ea;
    --color-purple-700: #7e22ce;

    /* Gray - Neutral */
    --color-gray-50: #f9fafb;
    --color-gray-100: #f3f4f6;
    --color-gray-200: #e5e7eb;
    --color-gray-300: #d1d5db;
    --color-gray-400: #9ca3af;
    --color-gray-500: #6b7280;
    --color-gray-600: #4b5563;
    --color-gray-700: #374151;
    --color-gray-800: #1f2937;
    --color-gray-900: #111827;

    /* Green - Success */
    --color-green-50: #f0fdf4;
    --color-green-100: #dcfce7;
    --color-green-200: #bbf7d0;
    --color-green-500: #22c55e;
    --color-green-600: #16a34a;
    --color-green-700: #15803d;
    --color-green-900: #14532d;

    /* Emerald */
    --color-emerald-50: #ecfdf5;

    /* Red - Error */
    --color-red-50: #fef2f2;
    --color-red-100: #fee2e2;
    --color-red-200: #fecaca;
    --color-red-500: #ef4444;
    --color-red-600: #dc2626;
    --color-red-700: #b91c1c;

    /* Orange - Warning */
    --color-orange-100: #ffedd5;
    --color-orange-500: #f97316;
    --color-orange-600: #ea580c;
    --color-orange-700: #c2410c;

    /* Amber */
    --color-amber-100: #fef3c7;
    --color-amber-600: #d97706;

    /* Yellow */
    --color-yellow-50: #fefce8;
    --color-yellow-100: #fef9c3;
    --color-yellow-200: #fef08a;
    --color-yellow-500: #eab308;
    --color-yellow-600: #ca8a04;
    --color-yellow-700: #a16207;
    --color-yellow-800: #854d0e;
    --color-yellow-900: #713f12;

    /* Blue */
    --color-blue-50: #eff6ff;
    --color-blue-100: #dbeafe;
    --color-blue-200: #bfdbfe;
    --color-blue-500: #3b82f6;
    --color-blue-600: #2563eb;
    --color-blue-700: #1d4ed8;
    --color-blue-900: #1e3a8a;

    /* Spacing */
    --spacing-1: 0.25rem;
    --spacing-2: 0.5rem;
    --spacing-3: 0.75rem;
    --spacing-4: 1rem;
    --spacing-5: 1.25rem;
    --spacing-6: 1.5rem;
    --spacing-8: 2rem;
    --spacing-10: 2.5rem;
    --spacing-12: 3rem;
    --spacing-16: 4rem;
    --spacing-20: 5rem;

    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.375rem;
    --radius-lg: 0.5rem;
    --radius-xl: 0.75rem;
    --radius-2xl: 1rem;
    --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), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

    /* Typography */
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;

    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;

    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    font-size: var(--font-size-base);
    line-height: 1.5;
    color: var(--color-gray-900);
    background-color: var(--color-gray-50);
    margin: 0;
}

/* ========================================
   Layout System
   ======================================== */
.app-container {
    display: flex;
    height: 100vh;
    overflow: hidden;
}

/* Sidebar */
.sidebar {
    width: 264px;
    background-color: white;
    border-right: 1px solid var(--color-gray-200);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
}

.sidebar-header {
    padding: var(--spacing-6);
    border-bottom: 1px solid var(--color-gray-200);
}

.sidebar-title {
    color: var(--color-indigo-600);
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    margin: 0;
}

.sidebar-subtitle {
    color: var(--color-gray-500);
    font-size: var(--font-size-sm);
    margin-top: var(--spacing-1);
}

.sidebar-nav {
    flex: 1;
    padding: var(--spacing-4);
    overflow-y: auto;
}

.nav-item {
    width: 100%;
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    padding: var(--spacing-3) var(--spacing-4);
    margin-bottom: var(--spacing-1);
    border: none;
    background: none;
    color: var(--color-gray-700);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
}

.nav-item:hover {
    background-color: var(--color-gray-50);
}

.nav-item.active {
    background-color: var(--color-indigo-50);
    color: var(--color-indigo-600);
}

.nav-icon {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.sidebar-footer {
    padding: var(--spacing-4);
    border-top: 1px solid var(--color-gray-200);
}

.portal-switcher {
    width: 100%;
    padding: var(--spacing-2) var(--spacing-4);
    background-color: var(--color-gray-100);
    color: var(--color-gray-700);
    border: none;
    border-radius: var(--radius-lg);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    cursor: pointer;
    transition: background-color var(--transition-fast);
}

.portal-switcher:hover {
    background-color: var(--color-gray-200);
}

/* Main Content Area */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

/* Top Header */
.top-header {
    position: sticky;
    top: 0;
    z-index: 10;
    background-color: white;
    border-bottom: 1px solid var(--color-gray-200);
    padding: var(--spacing-4) var(--spacing-8);
}

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

.header-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    color: var(--color-gray-900);
    margin: 0;
}

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

.header-button {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-2) var(--spacing-3);
    background: none;
    border: none;
    color: var(--color-gray-700);
    font-size: var(--font-size-sm);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: background-color var(--transition-fast);
}

.header-button:hover {
    background-color: var(--color-gray-50);
}

.notification-button {
    position: relative;
    padding: var(--spacing-2);
}

.notification-badge {
    position: absolute;
    top: var(--spacing-1);
    right: var(--spacing-1);
    width: 8px;
    height: 8px;
    background-color: var(--color-red-500);
    border-radius: var(--radius-full);
}

.user-section {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    padding-left: var(--spacing-4);
    border-left: 1px solid var(--color-gray-200);
}

.user-info {
    text-align: right;
}

.user-name {
    font-size: var(--font-size-sm);
    color: var(--color-gray-900);
    font-weight: var(--font-weight-medium);
    display: block;
}

.user-role {
    font-size: var(--font-size-xs);
    color: var(--color-gray-500);
    display: block;
}

.user-avatar {
    width: 40px;
    height: 40px;
    background-color: var(--color-indigo-100);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-indigo-600);
    font-weight: var(--font-weight-medium);
}

/* Page Content */
.page-content {
    flex: 1 1 auto;
    overflow-y: auto;
    overflow-x: hidden;
    padding: var(--spacing-8);
    min-height: 0;
    /* Force flex child to respect overflow */
}

/* ========================================
   Component Styles
   ======================================== */

/* Cards */
.card {
    background-color: white;
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-xl);
    padding: var(--spacing-6);
    box-shadow: var(--shadow-sm);
}

.card-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    margin-bottom: var(--spacing-4);
}

.card-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
}

.card-icon.green {
    background-color: var(--color-green-100);
    color: var(--color-green-600);
}

.card-icon.blue {
    background-color: var(--color-blue-100);
    color: var(--color-blue-600);
}

.card-icon.purple {
    background-color: var(--color-purple-100);
    color: var(--color-purple-600);
}

.card-icon.amber {
    background-color: var(--color-amber-100);
    color: var(--color-amber-600);
}

.card-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-medium);
    color: var(--color-gray-900);
    margin: 0;
}

/* Gradient Cards */
.gradient-card {
    padding: var(--spacing-6);
    border-radius: var(--radius-xl);
    color: white;
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-base);
}

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

.gradient-card.indigo {
    background: linear-gradient(135deg, var(--color-indigo-500) 0%, var(--color-indigo-600) 100%);
}

.gradient-card.purple {
    background: linear-gradient(135deg, var(--color-purple-500) 0%, var(--color-purple-600) 100%);
}

.gradient-card.dark {
    background: linear-gradient(135deg, var(--color-gray-900) 0%, var(--color-gray-800) 100%);
}

.gradient-card.indigo-purple {
    background: linear-gradient(135deg, var(--color-indigo-600) 0%, var(--color-purple-600) 100%);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-2);
    padding: var(--spacing-2) var(--spacing-4);
    border: 1px solid transparent;
    border-radius: var(--radius-lg);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    line-height: 1.5;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
}

.btn:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

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

.btn-primary:hover {
    background-color: var(--color-indigo-700);
}

.btn-secondary {
    background-color: var(--color-gray-100);
    color: var(--color-gray-700);
}

.btn-secondary:hover {
    background-color: var(--color-gray-200);
}

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

.btn-success:hover {
    background-color: var(--color-green-700);
}

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

.btn-danger:hover {
    background-color: var(--color-red-700);
}

.btn-warning {
    background-color: var(--color-orange-500);
    color: white;
}

.btn-warning:hover {
    background-color: var(--color-orange-600);
}

.btn-info {
    background-color: var(--color-blue-500);
    color: white;
}

.btn-info:hover {
    background-color: var(--color-blue-600);
}

.btn-sm {
    padding: var(--spacing-1) var(--spacing-3);
    font-size: var(--font-size-xs);
}

.btn-lg {
    padding: var(--spacing-3) var(--spacing-6);
    font-size: var(--font-size-base);
}

/* Action Button (Large gradient) */
.action-button {
    width: 100%;
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
    padding: var(--spacing-6);
    border: none;
    border-radius: var(--radius-xl);
    color: white;
    cursor: pointer;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-lg);
}

.action-button:hover {
    box-shadow: var(--shadow-xl);
    transform: translateY(-2px);
}

.action-icon-wrapper {
    width: 48px;
    height: 48px;
    background-color: rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.action-content {
    text-align: left;
    flex: 1;
}

.action-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    margin: 0 0 var(--spacing-1) 0;
    color: white;
}

.action-subtitle {
    font-size: var(--font-size-sm);
    opacity: 0.9;
    margin: 0;
}

/* Badges */
.badge {
    display: inline-block;
    padding: var(--spacing-1) var(--spacing-2);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    border-radius: var(--radius-md);
}

.badge-primary {
    background-color: var(--color-indigo-100);
    color: var(--color-indigo-700);
}

.badge-success {
    background-color: var(--color-green-100);
    color: var(--color-green-700);
}

.badge-warning {
    background-color: var(--color-yellow-100);
    color: var(--color-yellow-700);
}

.badge-danger {
    background-color: var(--color-red-100);
    color: var(--color-red-700);
}

.badge-info {
    background-color: var(--color-blue-100);
    color: var(--color-blue-700);
}

.badge-orange {
    background-color: var(--color-orange-100);
    color: var(--color-orange-700);
}

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

.form-label {
    display: block;
    margin-bottom: var(--spacing-2);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-gray-700);
}

.form-control {
    width: 100%;
    padding: var(--spacing-2) var(--spacing-3);
    font-size: var(--font-size-base);
    line-height: 1.5;
    color: var(--color-gray-900);
    background-color: white;
    border: 1px solid var(--color-gray-300);
    border-radius: var(--radius-lg);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-control:focus {
    outline: none;
    border-color: var(--color-indigo-500);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.form-control::placeholder {
    color: var(--color-gray-400);
}

textarea.form-control {
    resize: vertical;
    min-height: 80px;
}

.form-select {
    width: 100%;
    padding: var(--spacing-2) var(--spacing-3);
    font-size: var(--font-size-base);
    color: var(--color-gray-900);
    background-color: white;
    border: 1px solid var(--color-gray-300);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: border-color var(--transition-fast);
}

.form-select:focus {
    outline: none;
    border-color: var(--color-indigo-500);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

/* Progress Bar */
.progress-bar-container {
    width: 100%;
    height: 8px;
    background-color: var(--color-gray-200);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    background-color: var(--color-blue-600);
    border-radius: var(--radius-full);
    transition: width var(--transition-base);
}

/* Tabs */
.tabs {
    border-bottom: 1px solid var(--color-gray-200);
    display: flex;
    gap: var(--spacing-2);
}

.tab-button {
    padding: var(--spacing-4) var(--spacing-6);
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    color: var(--color-gray-500);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.tab-button:hover {
    color: var(--color-gray-700);
}

.tab-button.active {
    color: var(--color-indigo-600);
    border-bottom-color: var(--color-indigo-600);
}

/* Table */
.table {
    width: 100%;
    border-collapse: collapse;
    background-color: white;
    border-radius: var(--radius-xl);
    overflow: hidden;
}

.table thead {
    background-color: var(--color-gray-50);
}

.table th {
    padding: var(--spacing-3) var(--spacing-4);
    text-align: left;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--color-gray-700);
    border-bottom: 1px solid var(--color-gray-200);
}

.table td {
    padding: var(--spacing-3) var(--spacing-4);
    font-size: var(--font-size-sm);
    color: var(--color-gray-700);
    border-bottom: 1px solid var(--color-gray-200);
}

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

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

/* Timeline */
.timeline-item {
    display: flex;
    gap: var(--spacing-3);
}

.timeline-marker {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.timeline-dot {
    width: 32px;
    height: 32px;
    background-color: var(--color-indigo-100);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-indigo-600);
    flex-shrink: 0;
}

.timeline-line {
    width: 2px;
    flex: 1;
    background-color: var(--color-gray-200);
    margin: var(--spacing-1) 0;
}

.timeline-content {
    flex: 1;
    padding-bottom: var(--spacing-4);
}

/* Alert */
.alert {
    padding: var(--spacing-4);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-4);
    border: 1px solid;
}

.alert-info {
    background-color: var(--color-blue-50);
    border-color: var(--color-blue-200);
    color: var(--color-blue-900);
}

.alert-success {
    background-color: var(--color-green-50);
    border-color: var(--color-green-200);
    color: var(--color-green-900);
}

.alert-warning {
    background-color: var(--color-yellow-50);
    border-color: var(--color-yellow-200);
    color: var(--color-yellow-900);
}

.alert-danger {
    background-color: var(--color-red-50);
    border-color: var(--color-red-200);
    color: var(--color-red-900);
}

/* ========================================
   Toast Notification System
   ======================================== */

/* Toast Notification */
.toast {
    pointer-events: auto;
    background-color: white;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    padding: var(--spacing-4);
    border-left: 4px solid var(--color-indigo-600);
    display: flex;
    align-items: start;
    gap: var(--spacing-3);
    animation: slideInRight 0.3s ease-out;
    transition: all var(--transition-base);
    position: relative;
}

.toast:hover {
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    transform: translateX(-4px);
}

/* Toast variants */
.toast.toast-success {
    border-left-color: var(--color-green-600);
}

.toast.toast-warning {
    border-left-color: var(--color-orange-600);
}

.toast.toast-error {
    border-left-color: var(--color-red-600);
}

.toast.toast-info {
    border-left-color: var(--color-blue-600);
}

/* Toast Icon */
.toast-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.toast-icon.indigo {
    background-color: var(--color-indigo-100);
    color: var(--color-indigo-600);
}

.toast-icon.green {
    background-color: var(--color-green-100);
    color: var(--color-green-600);
}

.toast-icon.orange {
    background-color: var(--color-orange-100);
    color: var(--color-orange-600);
}

.toast-icon.red {
    background-color: var(--color-red-100);
    color: var(--color-red-600);
}

.toast-icon.blue {
    background-color: var(--color-blue-100);
    color: var(--color-blue-600);
}

/* Toast Content */
.toast-content {
    flex: 1;
    min-width: 0;
}

.toast-title {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    color: var(--color-gray-900);
    margin: 0 0 var(--spacing-1) 0;
}

.toast-message {
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
    margin: 0;
    line-height: 1.5;
}

/* Close Button */
.toast-close {
    background: none;
    border: none;
    color: var(--color-gray-400);
    cursor: pointer;
    padding: var(--spacing-1);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    flex-shrink: 0;
}

.toast-close:hover {
    background-color: var(--color-gray-100);
    color: var(--color-gray-600);
}

/* Animations */
@keyframes slideInRight {
    from {
        transform: translateX(400px);
        opacity: 0;
    }

    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes slideOutRight {
    from {
        transform: translateX(0);
        opacity: 1;
    }

    to {
        transform: translateX(400px);
        opacity: 0;
    }
}

.toast.toast-hiding {
    animation: slideOutRight 0.3s ease-out forwards;
}

/* Progress bar for auto-dismiss */
.toast-progress {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background-color: var(--color-gray-200);
    border-radius: 0 0 var(--radius-xl) var(--radius-xl);
    overflow: hidden;
}

.toast-progress-bar {
    height: 100%;
    background-color: var(--color-indigo-600);
    transition: width linear;
}

.toast-success .toast-progress-bar {
    background-color: var(--color-green-600);
}

.toast-warning .toast-progress-bar {
    background-color: var(--color-orange-600);
}

.toast-error .toast-progress-bar {
    background-color: var(--color-red-600);
}

.toast-info .toast-progress-bar {
    background-color: var(--color-blue-600);
}

/* Responsive adjustments */
@media (max-width: 640px) {
    .toast-container {
        left: var(--spacing-4);
        right: var(--spacing-4);
        bottom: var(--spacing-4);
        max-width: none;
    }

    @keyframes slideInRight {
        from {
            transform: translateY(100px);
            opacity: 0;
        }

        to {
            transform: translateY(0);
            opacity: 1;
        }
    }

    @keyframes slideOutRight {
        from {
            transform: translateY(0);
            opacity: 1;
        }

        to {
            transform: translateY(100px);
            opacity: 0;
        }
    }
}