:root {
    --color-primary: #1a4d6f; /* Maritimes Dunkelblau */
    --color-accent: #ff6b35; /* Signal-Orange */
    --color-light: #f5f5f5;
    --color-dark: #2c3e50;
    --color-success: #27ae60;
    --color-text: #333;
    --color-border: #ddd;
    
    --font-primary: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    
    --border-radius: 8px;
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 4px 16px rgba(0, 0, 0, 0.15);
}

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

/* Hide Blazor Error UI (visual bug workaround) */
#blazor-error-ui {
    display: none !important;
}

html, body {
    font-family: var(--font-primary);
    background-color: #ffffff;
    color: var(--color-text);
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Navigation */
nav {
    background-color: var(--color-primary);
    padding: var(--spacing-sm) 0;
    box-shadow: var(--shadow);
}

nav a,
.nav-link-button {
    color: white;
    text-decoration: none;
    margin: 0 var(--spacing-md);
    font-weight: 500;
    transition: opacity 0.3s ease;
}

/* Button styled as nav link */
.nav-link-button {
    background: none;
    border: none;
    cursor: pointer;
    font-family: inherit;
    font-size: inherit;
    padding: 0;
}

nav a:hover,
.nav-link-button:hover {
    opacity: 0.8;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.25rem;
    font-weight: 600;
}

.nav-logo {
    height: 40px;
    width: auto;
    object-fit: contain;
}

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

.nav-links {
    display: flex;
    gap: var(--spacing-sm);
    align-items: center;
}

/* Navigation Auth Buttons */
.user-greeting {
    color: white;
    font-weight: 500;
    padding: 0.5rem 1rem;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius);
    white-space: nowrap;
}

.btn-login,
.btn-register,
.btn-logout {
    padding: 0.5rem 1.25rem;
    border-radius: var(--border-radius);
    font-weight: 600;
    transition: all 0.3s ease;
    text-decoration: none;
    border: none;
    cursor: pointer;
    font-family: var(--font-primary);
    font-size: 0.95rem;
    white-space: nowrap;
}

.btn-login {
    background-color: transparent;
    color: white;
    border: 2px solid white;
}

.btn-login:hover {
    background-color: white;
    color: var(--color-primary);
    opacity: 1;
}

.btn-register {
    background-color: var(--color-accent);
    color: white;
    border: 2px solid var(--color-accent);
}

.btn-register:hover {
    background-color: #e55a26;
    border-color: #e55a26;
    transform: translateY(-2px);
    opacity: 1;
}

.btn-logout {
    background-color: rgba(255, 255, 255, 0.2);
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.btn-logout:hover {
    background-color: rgba(255, 255, 255, 0.3);
    border-color: white;
    opacity: 1;
}

/* Typography */
h1, h2, h3, h4 {
    color: var(--color-primary);
    margin: var(--spacing-md) 0 var(--spacing-sm) 0;
}

h1 {
    font-size: 2.5rem;
    font-weight: 700;
}

h2 {
    font-size: 2rem;
    font-weight: 600;
}

h3 {
    font-size: 1.5rem;
    font-weight: 600;
}

p {
    margin-bottom: var(--spacing-sm);
    font-size: 1rem;
}

.small {
    font-size: 0.875rem;
}

/* Hero Section */
.hero-section {
    background: linear-gradient(135deg, var(--color-primary) 0%, #2a6a94 100%);
    color: white;
    padding: 6rem var(--spacing-md);
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.hero-title {
    color: white;
    font-size: 3.5rem;
    margin-bottom: var(--spacing-sm);
}

.hero-subtitle {
    color: var(--color-accent);
    font-size: 1.75rem;
    margin-bottom: var(--spacing-md);
    font-weight: 500;
}

.hero-description {
    color: rgba(255, 255, 255, 0.95);
    font-size: 1.25rem;
    margin-bottom: var(--spacing-lg);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-md);
    border: none;
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.3s ease;
    text-align: center;
}

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

.btn-primary:hover {
    background-color: #e55a26;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

.btn-secondary:hover {
    background-color: #0f3450;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-lg {
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: 1.125rem;
}

/* Features Grid */
.features {
    padding: var(--spacing-xl) var(--spacing-md);
    background-color: var(--color-light);
    margin-bottom: var(--spacing-xl);
}

.features h2 {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.feature-card {
    background-color: white;
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    text-align: center;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

.feature-card h3 {
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

/* CTA Section */
.cta-section {
    background-color: var(--color-primary);
    color: white;
    padding: var(--spacing-xl) var(--spacing-md);
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.cta-section h2 {
    color: white;
    margin-bottom: var(--spacing-md);
}

.cta-section p {
    color: rgba(255, 255, 255, 0.95);
    font-size: 1.125rem;
    margin-bottom: var(--spacing-lg);
}

/* Page Header */
.page-header {
    background-color: var(--color-primary);
    color: white;
    padding: 3rem var(--spacing-md);
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.page-header h1 {
    color: white;
    margin-bottom: var(--spacing-sm);
}

.page-header p {
    color: rgba(255, 255, 255, 0.95);
    font-size: 1.125rem;
}

.back-button {
    color: var(--color-accent);
    text-decoration: none;
    font-weight: 600;
    transition: opacity 0.3s ease;
}

.back-button:hover {
    opacity: 0.8;
}

/* Modules Timeline */
.modules-timeline {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.module-card {
    background-color: white;
    border: 2px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    transition: all 0.3s ease;
    position: relative;
}

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

.module-card.completed {
    background-color: #f0fdf4;
    border-color: var(--color-success);
}

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

.module-header h3 {
    color: var(--color-accent);
    margin: 0;
    font-size: 0.9rem;
    font-weight: 700;
    text-transform: uppercase;
}

.duration {
    background-color: var(--color-light);
    padding: 0.25rem var(--spacing-sm);
    border-radius: 20px;
    font-size: 0.85rem;
    color: var(--color-text);
}

.module-card h2 {
    margin-top: 0;
    margin-bottom: var(--spacing-sm);
}

.module-footer {
    margin-top: var(--spacing-md);
    display: flex;
    gap: var(--spacing-sm);
}

.badge {
    display: inline-block;
    padding: 0.5rem var(--spacing-sm);
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
}

.badge-success {
    background-color: var(--color-success);
    color: white;
}

/* Course Detail */
.course-detail {
    margin-bottom: var(--spacing-xl);
}

.course-detail h1 {
    margin-bottom: var(--spacing-sm);
}

.module-info {
    color: #666;
    font-size: 0.95rem;
    margin-bottom: var(--spacing-lg);
}

.video-container {
    margin: var(--spacing-lg) 0;
    width: 100%;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.video-placeholder {
    background: linear-gradient(135deg, var(--color-primary) 0%, #2a6a94 100%);
    color: white;
    border-radius: var(--border-radius);
    padding: 6rem var(--spacing-lg);
    text-align: center;
}

.video-placeholder p {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
}

.course-content {
    max-width: 800px;
    margin: var(--spacing-xl) auto;
}

.course-content h2 {
    margin-bottom: var(--spacing-md);
}

.action-buttons {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.action-buttons .btn {
    flex: 1;
}

/* Booking Grid */
.booking-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.package-card {
    background-color: white;
    border: 2px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    text-align: center;
    transition: all 0.3s ease;
    position: relative;
}

.package-card:hover {
    border-color: var(--color-accent);
    box-shadow: var(--shadow-lg);
    transform: translateY(-8px);
}

.package-card.featured {
    border-color: var(--color-accent);
    background: linear-gradient(135deg, rgba(26, 77, 111, 0.05) 0%, rgba(255, 107, 53, 0.05) 100%);
}

.badge-featured {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--color-accent);
    color: white;
    padding: 0.5rem var(--spacing-md);
    border-radius: 20px;
    font-weight: 600;
    font-size: 0.85rem;
}

.package-card h3 {
    margin-top: var(--spacing-md);
    font-size: 1.75rem;
}

.price {
    font-size: 2.5rem;
    color: var(--color-accent);
    font-weight: 700;
    margin: var(--spacing-md) 0 var(--spacing-sm) 0;
}

.duration {
    color: #666;
    font-size: 0.95rem;
    margin-bottom: var(--spacing-md);
}

.features-list {
    list-style: none;
    text-align: left;
    margin: var(--spacing-lg) 0;
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
    padding: var(--spacing-lg) 0;
}

.features-list li {
    padding: var(--spacing-sm) 0;
    color: var(--color-text);
}

.package-card .btn {
    width: 100%;
    margin-top: var(--spacing-lg);
}

/* Loading & Status */
.loading {
    text-align: center;
    padding: var(--spacing-lg);
    color: #666;
}

.no-content {
    text-align: center;
    padding: var(--spacing-lg);
    color: #999;
    font-style: italic;
}

/* Footer */
footer {
    background-color: var(--color-primary);
    color: white;
    padding: var(--spacing-lg) var(--spacing-md);
    text-align: center;
    margin-top: var(--spacing-xl);
}

footer p {
    color: rgba(255, 255, 255, 0.95);
    margin: var(--spacing-sm) 0;
}

footer .tagline {
    font-style: italic;
    font-size: 0.95rem;
}

/* Navigation Brand */
.nav-brand {
    font-size: 1.5rem;
    font-weight: 700;
    color: white !important;
    text-decoration: none !important;
    display: inline-block;
    margin-right: var(--spacing-lg);
}

.nav-links {
    display: inline-flex;
    gap: var(--spacing-lg);
}

/* Spinner */
.spinner {
    animation: rotate 2s linear infinite;
    width: 50px;
    height: 50px;
    margin: 20px auto;
}

@keyframes rotate {
    100% {
        transform: rotate(360deg);
    }
}

.spinner .path {
    stroke: var(--color-accent);
    stroke-linecap: round;
    animation: dash 1.5s ease-in-out infinite;
}

@keyframes dash {
    0% {
        stroke-dasharray: 1, 150;
        stroke-dashoffset: 0;
    }
    50% {
        stroke-dasharray: 90, 150;
        stroke-dashoffset: -35;
    }
    100% {
        stroke-dasharray: 90, 150;
        stroke-dashoffset: -124;
    }
}

/* Responsive */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1.25rem;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    h1 {
        font-size: 1.75rem;
    }
    
    h2 {
        font-size: 1.5rem;
    }
    
    .action-buttons {
        flex-direction: column;
    }
    
    nav a {
        margin: 0 var(--spacing-sm);
        font-size: 0.9rem;
    }

    .nav-links {
        gap: var(--spacing-xs);
        flex-wrap: wrap;
    }

    .user-greeting {
        font-size: 0.85rem;
        padding: 0.4rem 0.75rem;
    }

    .btn-login,
    .btn-register,
    .btn-logout {
        padding: 0.4rem 0.8rem;
        font-size: 0.85rem;
    }
}

/* User Menu Dropdown */
.user-menu {
    position: relative;
    cursor: pointer;
}

.user-menu-trigger {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    border-radius: 25px;
    background: rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
}

.user-menu-trigger:hover {
    background: rgba(255, 255, 255, 0.2);
}

.user-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--color-accent);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.85rem;
}

.user-name {
    color: white;
    font-weight: 600;
}

.dropdown-arrow {
    color: white;
    font-size: 0.7rem;
    transition: transform 0.3s ease;
}

.user-menu.active .dropdown-arrow {
    transform: rotate(180deg);
}

.user-menu-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 0.5rem;
    background: white;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    min-width: 220px;
    overflow: hidden;
    z-index: 1000;
}

.menu-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.875rem 1.25rem;
    color: var(--color-text);
    text-decoration: none;
    transition: all 0.2s ease;
    border-bottom: 1px solid var(--color-border);
    cursor: pointer;
}

.menu-item:hover {
    background: #f8f9fa;
    color: var(--color-accent);
}

.menu-item:last-child {
    border-bottom: none;
}

.menu-icon {
    font-size: 1.2rem;
}

.logout-item {
    color: #dc3545;
}

.logout-item:hover {
    background: #fff5f5;
    color: #dc3545;
}

.menu-divider {
    height: 1px;
    background: var(--color-border);
    margin: 0.25rem 0;
}

.badge {
    margin-left: auto;
    padding: 0.25rem 0.5rem;
    background: #ffc107;
    color: #000;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
}

/* ==========================================
   QUIZ COMPONENT STYLES
   ========================================== */

.quiz-container {
    max-width: 800px;
    margin: 2rem auto;
    padding: 0 1rem;
}

.quiz-header {
    text-align: center;
    margin-bottom: 2rem;
}

.quiz-header h2 {
    color: var(--color-primary);
    margin-bottom: 1rem;
}

.quiz-description {
    color: var(--color-text);
    margin-bottom: 1rem;
}

.quiz-info {
    display: flex;
    justify-content: center;
    gap: 2rem;
    color: #666;
    font-size: 0.9rem;
}

/* Progress Bar */
.progress-bar {
    width: 100%;
    height: 8px;
    background: var(--color-light);
    border-radius: 4px;
    margin-bottom: 2rem;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: var(--color-accent);
    transition: width 0.3s ease;
}

/* Question Container */
.question-container {
    background: white;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: 2rem;
    margin-bottom: 2rem;
    box-shadow: var(--shadow);
}

.question-number {
    color: var(--color-accent);
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.question-text {
    color: var(--color-dark);
    font-size: 1.25rem;
    margin-bottom: 1.5rem;
}

/* Answer Options */
.answers {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.answer-option {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    border: 2px solid var(--color-border);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all 0.2s ease;
}

.answer-option:hover {
    border-color: var(--color-accent);
    background: #fff5f0;
}

.answer-option.selected {
    border-color: var(--color-accent);
    background: #fff5f0;
}

.radio-button {
    font-size: 1.5rem;
    color: var(--color-accent);
}

.radio-unselected {
    color: #ccc;
}

.answer-text {
    flex: 1;
    font-size: 1rem;
}

/* Navigation Buttons */
.navigation-buttons {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 1rem;
}

.navigation-buttons .btn {
    min-width: 120px;
}

.answer-status {
    text-align: center;
    color: #666;
    font-size: 0.9rem;
}

/* Quiz Result */
.quiz-result {
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
}

.result-header {
    padding: 2rem;
    text-align: center;
    color: white;
}

.result-header.passed {
    background: linear-gradient(135deg, #27ae60, #2ecc71);
}

.result-header.failed {
    background: linear-gradient(135deg, #e74c3c, #c0392b);
}

.result-header h2 {
    margin-bottom: 1rem;
    font-size: 2rem;
}

.score-display {
    display: flex;
    justify-content: center;
    align-items: baseline;
    gap: 1rem;
    margin-bottom: 1rem;
}

.score {
    font-size: 3rem;
    font-weight: bold;
}

.percentage {
    font-size: 2rem;
}

.passing-requirement {
    opacity: 0.9;
    font-size: 0.9rem;
}

/* Question Review */
.question-review {
    padding: 2rem;
}

.question-review h3 {
    color: var(--color-primary);
    margin-bottom: 1.5rem;
}

.review-item {
    border-left: 4px solid #ccc;
    padding: 1rem;
    margin-bottom: 1.5rem;
    background: var(--color-light);
    border-radius: 0 var(--border-radius) var(--border-radius) 0;
}

.review-item.correct {
    border-left-color: var(--color-success);
    background: #f0f9f4;
}

.review-item.incorrect {
    border-left-color: #e74c3c;
    background: #fef5f5;
}

.review-header {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
}

.review-icon {
    font-size: 1.5rem;
    font-weight: bold;
}

.review-item.correct .review-icon {
    color: var(--color-success);
}

.review-item.incorrect .review-icon {
    color: #e74c3c;
}

.review-header h4 {
    flex: 1;
    color: var(--color-dark);
    font-size: 1rem;
}

.review-answer {
    margin-bottom: 0.75rem;
    padding-left: 2.25rem;
}

.review-answer p {
    margin-bottom: 0.5rem;
}

.correct-answer {
    color: var(--color-success);
}

.explanation {
    padding: 1rem;
    background: white;
    border-radius: var(--border-radius);
    margin-top: 0.75rem;
    margin-left: 2.25rem;
    font-size: 0.9rem;
}

.result-actions {
    padding: 2rem;
    display: flex;
    gap: 1rem;
    justify-content: center;
    border-top: 1px solid var(--color-border);
}

/* Loading & Error States */
.loading, .error {
    text-align: center;
    padding: 3rem;
    font-size: 1.2rem;
}

.error {
    color: #e74c3c;
}

/* Responsive Design */
@media (max-width: 768px) {
    .quiz-container {
        padding: 0 0.5rem;
    }

    .question-container {
        padding: 1.5rem;
    }

    .navigation-buttons {
        flex-direction: column;
    }

    .navigation-buttons .btn {
        width: 100%;
    }

    .result-actions {
        flex-direction: column;
    }

    .result-actions .btn {
        width: 100%;
    }

    .quiz-info {
        flex-direction: column;
        gap: 0.5rem;
    }
}