/* ============================================
   TrainingMurra - CSS Design System
   ============================================ */

:root {
    /* Color Palette */
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --secondary: #10b981;
    --secondary-dark: #059669;
    --accent: #f59e0b;
    --danger: #ef4444;

    /* Dark Theme */
    --bg-dark: #0f172a;
    --bg-card: #1e293b;
    --bg-card-hover: #334155;
    --bg-sidebar: #1e293b;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --border-color: #334155;

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    --gradient-secondary: linear-gradient(135deg, #10b981 0%, #14b8a6 100%);
    --gradient-accent: linear-gradient(135deg, #f59e0b 0%, #f97316 100%);
    --gradient-bg: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);

    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 20px rgba(99, 102, 241, 0.3);

    /* Layout */
    --sidebar-width: 280px;
    --sidebar-collapsed-width: 80px;
    --header-height: 70px;
    --border-radius: 12px;
    --border-radius-lg: 16px;

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--gradient-bg);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.6;
}

/* Hyperlinks */
a {
    color: #64b5f6;
    text-decoration: none;
    transition: var(--transition-fast);
}

a:hover {
    color: #90caf9;
    text-decoration: underline;
}

/* ============================================
   Login Modal
   ============================================ */

.modal {
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.95);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    backdrop-filter: blur(10px);
}

.modal.hidden {
    display: none;
}

.modal-content {
    width: 100%;
    max-width: 420px;
    padding: 48px;
    animation: slideUp 0.5s ease;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

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

.glass-card {
    background: rgba(30, 41, 59, 0.8);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    backdrop-filter: blur(20px);
    box-shadow: var(--shadow-lg);
}

.login-header {
    text-align: center;
    margin-bottom: 32px;
}

.logo-large {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    margin-bottom: 8px;
}

.logo-large .logo-icon {
    font-size: 40px;
    filter: drop-shadow(0 0 10px rgba(99, 102, 241, 0.5));
}

.logo-large h1 {
    font-size: 32px;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.login-header p {
    color: var(--text-secondary);
    font-size: 14px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text-secondary);
    font-size: 14px;
}

.form-group input {
    width: 100%;
    padding: 14px 16px;
    background: var(--bg-dark);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    color: var(--text-primary);
    font-size: 15px;
    transition: var(--transition-fast);
}

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

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

.btn-primary {
    width: 100%;
    padding: 14px 24px;
    background: var(--gradient-primary);
    border: none;
    border-radius: var(--border-radius);
    color: white;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-normal);
    margin-top: 8px;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.demo-hint {
    text-align: center;
    margin-top: 16px;
    color: var(--text-muted);
    font-size: 13px;
}

/* ============================================
   App Container & Layout
   ============================================ */

.app-container {
    display: flex;
    min-height: 100vh;
}

.app-container.hidden {
    display: none;
}

/* Sidebar */
.sidebar {
    width: var(--sidebar-width);
    background: var(--bg-sidebar);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
    z-index: 100;
    transition: width var(--transition-normal);
}

.sidebar.collapsed {
    width: var(--sidebar-collapsed-width);
}

.sidebar-header {
    padding: 24px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.sidebar.collapsed .logo-text,
.sidebar.collapsed .user-details,
.sidebar.collapsed .nav-text {
    display: none;
}

.sidebar.collapsed .sidebar-header {
    justify-content: center;
    padding: 24px 12px;
}

.sidebar.collapsed .logo {
    display: none;
}

.sidebar.collapsed .user-info {
    justify-content: center;
    padding: 0;
    background: transparent;
}

.sidebar.collapsed .btn-logout {
    display: none;
}

.btn-icon {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 4px;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-icon {
    font-size: 28px;
    filter: drop-shadow(0 0 8px rgba(99, 102, 241, 0.5));
}

.logo-text {
    font-size: 22px;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Navigation Menu */
.nav-menu {
    flex: 1;
    padding: 16px 12px;
    overflow-y: auto;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 16px;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: var(--border-radius);
    margin-bottom: 4px;
    transition: var(--transition-fast);
}

.nav-item:hover {
    background: var(--bg-card-hover);
    color: var(--text-primary);
}

.nav-item.active {
    background: var(--gradient-primary);
    color: white;
    box-shadow: var(--shadow-md);
}

.nav-icon {
    font-size: 20px;
}

.nav-text {
    font-weight: 500;
    font-size: 14px;
}

/* User Section */
.user-section {
    padding: 16px;
    border-top: 1px solid var(--border-color);
}

.user-info {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    background: var(--bg-dark);
    border-radius: var(--border-radius);
    margin-bottom: 12px;
}

.user-avatar {
    width: 40px;
    height: 40px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
}

.user-details {
    display: flex;
    flex-direction: column;
}

.user-details span:first-child {
    font-weight: 600;
    font-size: 14px;
}

.user-role {
    font-size: 12px;
    color: var(--text-muted);
}

.btn-logout {
    width: 100%;
    padding: 10px;
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition-fast);
}

.btn-logout:hover {
    background: var(--danger);
    border-color: var(--danger);
    color: white;
}

/* Main Content */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    display: flex;
    flex-direction: column;
    transition: margin-left var(--transition-normal);
}

.sidebar.collapsed+.main-content {
    margin-left: var(--sidebar-collapsed-width);
}

.content-header {
    padding: 20px 32px;
    background: var(--bg-card);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 50;
}

.content-header h2 {
    font-size: 24px;
    font-weight: 700;
}

.progress-indicator {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 14px;
    color: var(--text-secondary);
}

.progress-bar {
    width: 200px;
    height: 8px;
    background: var(--bg-dark);
    border-radius: 4px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: var(--gradient-secondary);
    border-radius: 4px;
    transition: width 0.5s ease;
}

.content-area {
    flex: 1;
    padding: 32px;
    overflow-y: auto;
}

/* ============================================
   Cards & Components
   ============================================ */

.module-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 24px;
}

.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 24px;
    transition: var(--transition-normal);
}

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

.card-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 16px;
}

.card-icon {
    width: 48px;
    height: 48px;
    background: var(--gradient-primary);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
}

.card-icon.secondary {
    background: var(--gradient-secondary);
}

.card-icon.accent {
    background: var(--gradient-accent);
}

.card-title {
    font-size: 18px;
    font-weight: 600;
}

.card-subtitle {
    font-size: 13px;
    color: var(--text-muted);
}

.card-content {
    color: var(--text-secondary);
    font-size: 14px;
    margin-bottom: 16px;
}

.card-progress {
    margin-top: 16px;
}

.card-progress-bar {
    height: 6px;
    background: var(--bg-dark);
    border-radius: 3px;
    overflow: hidden;
    margin-top: 8px;
}

.card-progress-fill {
    height: 100%;
    background: var(--gradient-primary);
    border-radius: 3px;
    transition: width 0.5s ease;
}

/* Stats Cards */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 32px;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 16px;
}

.stat-icon {
    width: 56px;
    height: 56px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
}

.stat-icon.purple {
    background: rgba(99, 102, 241, 0.15);
}

.stat-icon.green {
    background: rgba(16, 185, 129, 0.15);
}

.stat-icon.orange {
    background: rgba(245, 158, 11, 0.15);
}

.stat-icon.blue {
    background: rgba(59, 130, 246, 0.15);
}

.stat-info h3 {
    font-size: 28px;
    font-weight: 700;
}

.stat-info p {
    font-size: 13px;
    color: var(--text-muted);
}

/* ============================================
   Module Content Sections
   ============================================ */

.section-title {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.section-title::before {
    content: '';
    width: 4px;
    height: 24px;
    background: var(--gradient-primary);
    border-radius: 2px;
}

/* Lessons List */
.lessons-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.lesson-item {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 16px;
    cursor: pointer;
    transition: var(--transition-fast);
}

.lesson-item:hover {
    border-color: var(--primary);
    background: var(--bg-card-hover);
}

.lesson-item.completed {
    border-left: 3px solid var(--secondary);
}

/* Table Styling */
.lesson-content-panel table,
.data-table,
.ql-editor table {
    width: 100%;
    border-collapse: collapse;
    margin: 24px 0;
    font-size: 14px;
    background: var(--bg-card);
}

.lesson-content-panel th,
.data-table th,
.ql-editor th,
.lesson-content-panel td,
.data-table td,
.ql-editor td {
    border: 1px solid var(--border-color);
    padding: 12px;
    text-align: left;
}

.lesson-content-panel th,
.data-table th {
    background: var(--bg-dark);
    font-weight: 600;
    color: var(--primary);
}

.lesson-content-panel tr:hover,
.data-table tr:hover {
    background: rgba(255, 255, 255, 0.02);
}

/* Drag & Drop */
.draggable-item.over,
.draggable-module.over {
    border: 2px dashed #64b5f6 !important;
    background: rgba(100, 181, 246, 0.1) !important;
}

.draggable-item,
.draggable-module {
    transition: all 0.2s;
    cursor: grab;
}

.draggable-item:active,
.draggable-module:active {
    cursor: grabbing;
}

.lesson-item.active {
    border-left: 3px solid var(--primary);
    background: var(--bg-card-hover);
}

.lesson-number {
    width: 36px;
    height: 36px;
    background: var(--bg-dark);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 14px;
}

.lesson-item.completed .lesson-number {
    background: var(--secondary);
    color: white;
}

.lesson-info {
    flex: 1;
}

.lesson-title {
    font-weight: 600;
    margin-bottom: 4px;
}

.lesson-meta {
    font-size: 13px;
    color: var(--text-muted);
}

.lesson-status {
    font-size: 20px;
}

/* Lesson Content Panel */
.lesson-content-panel {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 32px;
    margin-top: 24px;
}

.lesson-content-panel h3 {
    font-size: 22px;
    margin-bottom: 24px;
}

.lesson-content-panel p {
    color: var(--text-secondary);
    margin-bottom: 16px;
    line-height: 1.8;
}

.lesson-content-panel ul {
    margin-left: 24px;
}

.lesson-content-panel a {
    color: #64b5f6;
    font-weight: 500;
}

.lesson-content-panel a:hover {
    color: #90caf9;
    text-decoration: underline;
}



.lesson-content-panel li {
    color: var(--text-secondary);
    margin-bottom: 8px;
}

/* Code Block & Quill syntax */
.code-block,
pre.ql-syntax,
.lesson-content-panel pre {
    background: #0f172a;
    /* Darker background */
    border: 1px solid #334155;
    border-radius: 8px;
    padding: 16px;
    margin: 16px 0;
    overflow-x: auto;
    font-family: 'Fira Code', 'Consolas', monospace;
    color: #10b981;
    /* Green text like terminal */
}

.code-block code,
pre.ql-syntax,
.lesson-content-panel pre {
    font-size: 14px;
}

/* Terminal Window Styling */
.terminal-window {
    background: #0f172a;
    border: 1px solid #334155;
    border-radius: 8px;
    margin: 16px 0;
    overflow: hidden;
    /* Ensure header clips correctly */
}

.terminal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: #1e293b;
    /* Distinct header bg */
    padding: 8px 16px;
    border-bottom: 1px solid #334155;
}

.term-type {
    font-family: 'Inter', sans-serif;
    font-size: 13px;
    font-weight: 600;
    color: #94a3b8;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.terminal-window pre {
    margin: 0;
    border: none;
    border-radius: 0;
    /* Header takes top radius */
    background: transparent;
    /* Use window bg */
    padding: 16px;
}

.copy-btn {
    background: transparent;
    border: 1px solid #475569;
    color: #94a3b8;
    border-radius: 4px;
    padding: 4px 8px;
    font-size: 12px;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: 6px;
}

.copy-btn:hover {
    background: #334155;
    color: white;
}

/* Student Restrictions: No Copy/Paste */
body.role-student .terminal-window pre,
body.role-student .code-block,
body.role-student .lesson-content-panel pre {
    -webkit-user-select: none;
    /* Safari */
    -moz-user-select: none;
    /* Firefox */
    -ms-user-select: none;
    /* IE10+/Edge */
    user-select: none;
    /* Standard */
}

body.role-student .copy-btn {
    display: none !important;
}

/* Action Buttons */
.btn {
    padding: 12px 24px;
    border: none;
    border-radius: var(--border-radius);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-fast);
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn-success {
    background: var(--gradient-secondary);
    color: white;
}

.btn-success:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.3);
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
}

.btn-outline:hover {
    border-color: var(--primary);
    color: var(--primary);
}

/* Simulator Panel */
.simulator-panel {
    background: var(--bg-dark);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 24px;
    margin-top: 24px;
}

.simulator-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.simulator-title {
    font-size: 16px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
}

.simulator-controls {
    display: flex;
    gap: 12px;
}

.simulator-output {
    background: #0a0a0a;
    border-radius: var(--border-radius);
    padding: 16px;
    font-family: 'Consolas', monospace;
    font-size: 13px;
    color: #10b981;
    min-height: 200px;
    max-height: 400px;
    overflow-y: auto;
}

.simulator-output .log-entry {
    margin-bottom: 8px;
    display: flex;
    gap: 12px;
}

.simulator-output .timestamp {
    color: var(--text-muted);
}

/* Data Tables */
.data-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 16px;
}

.data-table th,
.data-table td {
    padding: 14px 16px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.data-table th {
    background: var(--bg-dark);
    font-weight: 600;
    font-size: 13px;
    text-transform: uppercase;
    color: var(--text-muted);
}

.data-table td {
    font-size: 14px;
}

.data-table tr:hover td {
    background: var(--bg-card-hover);
}

/* Badge */
.badge {
    display: inline-block;
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 500;
}

.badge-success {
    background: rgba(16, 185, 129, 0.15);
    color: var(--secondary);
}

.badge-warning {
    background: rgba(245, 158, 11, 0.15);
    color: var(--accent);
}

.badge-info {
    background: rgba(99, 102, 241, 0.15);
    color: var(--primary-light);
}

/* Tabs */
.tabs {
    display: flex;
    gap: 4px;
    background: var(--bg-dark);
    padding: 4px;
    border-radius: var(--border-radius);
    margin-bottom: 24px;
}

.tab {
    padding: 12px 24px;
    border: none;
    background: transparent;
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    border-radius: 8px;
    transition: var(--transition-fast);
}

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

.tab.active {
    background: var(--gradient-primary);
    color: white;
}

/* ============================================
   Animations
   ============================================ */

@keyframes pulse {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.5;
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

.fade-in {
    animation: fadeIn 0.3s ease;
}

/* ============================================
   Responsive Design
   ============================================ */

@media (max-width: 1024px) {
    .sidebar {
        width: 80px;
    }

    .logo-text,
    .nav-text,
    .user-details {
        display: none;
    }

    .main-content {
        margin-left: 80px;
    }

    .user-info {
        justify-content: center;
    }
}

@media (max-width: 768px) {
    .sidebar {
        display: none;
    }

    .main-content {
        margin-left: 0;
    }

    .content-header {
        flex-direction: column;
        gap: 16px;
    }

    .progress-indicator {
        width: 100%;
    }

    .progress-bar {
        flex: 1;
    }
}