/* ==========================================================================
   Clair Ressenti — Stylesheet
   Palette: bleus pastel, lavande, crème — ambiance spirituelle
   ========================================================================== */

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

:root {
    --color-primary: #4338ca;
    --color-primary-light: #6366f1;
    --color-primary-dark: #3730a3;
    --color-secondary: #7c3aed;
    --color-bg-start: #f0f0ff;
    --color-bg-mid: #e8e0f5;
    --color-bg-end: #f5f0ff;
    --color-cream: #faf8f5;
    --color-lavender: #e8e0f5;
    --color-pastel-blue: #dbeafe;
    --color-text: #1e1b4b;
    --color-text-light: #4a4458;
    --color-text-muted: #6b7280;
    --color-success: #059669;
    --color-error: #dc2626;
    --color-warning: #d97706;
    --color-border: #e5e7eb;
    --color-card-bg: rgba(255, 255, 255, 0.85);
    --font-display: 'Cormorant Garamond', serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --radius: 12px;
    --radius-lg: 20px;
    --shadow: 0 4px 24px rgba(67, 56, 202, 0.08);
    --shadow-lg: 0 8px 40px rgba(67, 56, 202, 0.12);
    --transition: all 0.3s ease;
}

/* High Contrast Mode */
body.high-contrast {
    --color-bg-start: #000;
    --color-bg-mid: #111;
    --color-bg-end: #000;
    --color-text: #fff;
    --color-text-light: #e0e0e0;
    --color-text-muted: #bbb;
    --color-card-bg: rgba(30, 30, 30, 0.95);
    --color-border: #555;
    --color-primary: #818cf8;
    --color-primary-light: #a5b4fc;
}

body.high-contrast .gradient-bg {
    background: #000;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    color: var(--color-text);
    line-height: 1.6;
    min-height: 100vh;
}

.gradient-bg {
    background: linear-gradient(135deg, var(--color-bg-start) 0%, var(--color-bg-mid) 50%, var(--color-bg-end) 100%);
}

h1, h2, h3 {
    font-family: var(--font-display);
    font-weight: 600;
    line-height: 1.2;
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: var(--transition);
}

a:hover {
    color: var(--color-primary-dark);
}

img {
    max-width: 100%;
    height: auto;
}

/* Screen reader only */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* ==========================================================================
   Header
   ========================================================================== */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 100;
    background: rgba(240, 240, 255, 0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
}

.header-logo {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-primary-dark);
}

.header-nav {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.nav-link {
    padding: 0.5rem 1rem;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-text-light);
    transition: var(--transition);
}

.nav-link:hover, .nav-link.active {
    background: var(--color-primary);
    color: white;
}

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--radius);
    font-family: var(--font-body);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
}

.btn-primary {
    background: var(--color-primary);
    color: white;
    box-shadow: 0 4px 14px rgba(67, 56, 202, 0.3);
}

.btn-primary:hover {
    background: var(--color-primary-dark);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(67, 56, 202, 0.4);
}

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

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

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

.btn-danger:hover {
    background: #b91c1c;
    color: white;
}

.btn-large {
    padding: 1rem 2.5rem;
    font-size: 1.15rem;
    border-radius: var(--radius-lg);
}

.btn-small {
    padding: 0.4rem 0.8rem;
    font-size: 0.85rem;
}

.btn-full {
    width: 100%;
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 6rem 2rem 4rem;
    text-align: center;
}

.hero-content {
    max-width: 700px;
}

.hero-icon {
    margin-bottom: 2rem;
    opacity: 0.8;
}

.hero-title {
    font-size: clamp(3rem, 8vw, 5rem);
    color: var(--color-primary-dark);
    margin-bottom: 0.5rem;
}

.hero-subtitle {
    font-family: var(--font-display);
    font-size: 1.5rem;
    color: var(--color-primary-light);
    font-style: italic;
    margin-bottom: 1rem;
}

.hero-description {
    font-size: 1.1rem;
    color: var(--color-text-light);
    margin-bottom: 2.5rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* ==========================================================================
   Sections
   ========================================================================== */
.section {
    padding: 5rem 2rem;
}

.section-cta {
    background: var(--color-card-bg);
}

.container {
    max-width: 1100px;
    margin: 0 auto;
}

.text-center {
    text-align: center;
}

.section-title {
    font-size: 2.5rem;
    color: var(--color-primary-dark);
    margin-bottom: 1rem;
    text-align: center;
}

.section-description {
    font-size: 1.1rem;
    color: var(--color-text-light);
    margin-bottom: 2rem;
}

/* Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.feature-card {
    background: var(--color-card-bg);
    border-radius: var(--radius-lg);
    padding: 2.5rem 2rem;
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

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

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.feature-card h3 {
    font-size: 1.4rem;
    color: var(--color-primary-dark);
    margin-bottom: 0.75rem;
}

.feature-card p {
    color: var(--color-text-light);
    font-size: 0.95rem;
}

/* ==========================================================================
   QCM Page
   ========================================================================== */
.qcm-container {
    max-width: 900px;
    margin: 0 auto;
    padding: 6rem 1.5rem 3rem;
    min-height: 100vh;
}

.qcm-loading {
    text-align: center;
    padding: 4rem 2rem;
    color: var(--color-text-light);
}

.spinner {
    width: 48px;
    height: 48px;
    border: 4px solid var(--color-border);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin: 0 auto 1rem;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.qcm-error {
    text-align: center;
    padding: 3rem;
    background: var(--color-card-bg);
    border-radius: var(--radius-lg);
    border: 2px solid var(--color-error);
}

.qcm-error p {
    color: var(--color-error);
    font-size: 1.1rem;
}

/* Image Frame */
.qcm-image-frame {
    width: 100%;
    max-height: 55vh;
    min-height: 300px;
    background: var(--color-card-bg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 2rem;
    border: 2px solid var(--color-border);
}

#qcm-canvas {
    width: 100%;
    height: 100%;
    max-height: 55vh;
    min-height: 300px;
    object-fit: contain;
    display: block;
}

/* Question */
.qcm-question {
    text-align: center;
    margin-bottom: 1.5rem;
}

.qcm-question h2 {
    font-size: 1.6rem;
    color: var(--color-primary-dark);
}

/* Answers */
.qcm-answers {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.answer-btn {
    display: block;
    width: 100%;
    padding: 1.2rem 1.5rem;
    background: var(--color-card-bg);
    border: 2px solid var(--color-border);
    border-radius: var(--radius);
    font-family: var(--font-body);
    font-size: 1rem;
    font-weight: 500;
    color: var(--color-text);
    cursor: pointer;
    transition: var(--transition);
    text-align: left;
}

.answer-btn:hover:not(.disabled):not(.correct) {
    border-color: var(--color-primary);
    background: var(--color-pastel-blue);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.answer-btn:focus {
    outline: 3px solid var(--color-primary-light);
    outline-offset: 2px;
}

.answer-btn.disabled {
    opacity: 0.4;
    cursor: not-allowed;
    background: #f3f4f6;
    border-color: #d1d5db;
    text-decoration: line-through;
}

.answer-btn.correct {
    background: #d1fae5;
    border-color: var(--color-success);
    color: #065f46;
    cursor: default;
    animation: pulse-success 0.5s ease;
}

.answer-btn .answer-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    background: var(--color-lavender);
    border-radius: 50%;
    font-size: 0.85rem;
    font-weight: 600;
    margin-right: 0.75rem;
    color: var(--color-primary-dark);
}

.answer-btn.disabled .answer-number {
    background: #e5e7eb;
    color: #9ca3af;
}

.answer-btn.correct .answer-number {
    background: var(--color-success);
    color: white;
}

@keyframes pulse-success {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.02); }
}

/* Feedback */
.qcm-feedback {
    text-align: center;
    padding: 1.5rem;
    border-radius: var(--radius);
    margin-bottom: 1rem;
}

.qcm-feedback.feedback-wrong {
    background: #fef2f2;
    border: 1px solid #fecaca;
}

.qcm-feedback.feedback-correct {
    background: #ecfdf5;
    border: 1px solid #a7f3d0;
}

.qcm-feedback p {
    font-size: 1.2rem;
    font-weight: 500;
    margin-bottom: 1rem;
}

.qcm-feedback.feedback-wrong p {
    color: var(--color-warning);
}

.qcm-feedback.feedback-correct p {
    color: var(--color-success);
}

/* Instructions */
.qcm-instructions {
    text-align: center;
    color: var(--color-text-muted);
    margin-top: 1rem;
}

kbd {
    display: inline-block;
    padding: 2px 6px;
    font-size: 0.8rem;
    background: var(--color-card-bg);
    border: 1px solid var(--color-border);
    border-radius: 4px;
    box-shadow: 0 1px 2px rgba(0,0,0,0.05);
}

/* ==========================================================================
   Admin Page
   ========================================================================== */
.admin-container {
    max-width: 900px;
    margin: 0 auto;
    padding: 6rem 1.5rem 3rem;
    min-height: 100vh;
}

.admin-login {
    max-width: 400px;
    margin: 4rem auto;
    text-align: center;
    background: var(--color-card-bg);
    padding: 3rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

.admin-login h1 {
    font-size: 2rem;
    color: var(--color-primary-dark);
    margin-bottom: 0.5rem;
}

.admin-login p {
    color: var(--color-text-light);
    margin-bottom: 2rem;
}

.admin-panel h1 {
    font-size: 2.2rem;
    color: var(--color-primary-dark);
    margin-bottom: 2rem;
    text-align: center;
}

.admin-section {
    background: var(--color-card-bg);
    border-radius: var(--radius-lg);
    padding: 2rem;
    margin-bottom: 2rem;
    box-shadow: var(--shadow);
}

.admin-section h2 {
    font-size: 1.5rem;
    color: var(--color-primary-dark);
    margin-bottom: 1.5rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--color-border);
}

/* Image List */
.image-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.image-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: var(--color-cream);
    border-radius: var(--radius);
    border: 1px solid var(--color-border);
    flex-wrap: wrap;
}

.image-preview {
    width: 60px;
    height: 60px;
    border-radius: 8px;
    overflow: hidden;
    flex-shrink: 0;
}

.image-preview img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.image-info {
    flex: 1;
    min-width: 150px;
}

.image-name {
    display: block;
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

.image-display-name {
    display: block;
    font-weight: 500;
    color: var(--color-text);
}

.image-actions {
    display: flex;
    gap: 0.5rem;
    align-items: center;
    flex-wrap: wrap;
}

.inline-form {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
}

.rename-form .form-input-small {
    width: 140px;
}

/* ==========================================================================
   Login Page
   ========================================================================== */
.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 6rem 2rem 3rem;
}

.login-card {
    max-width: 420px;
    width: 100%;
    background: var(--color-card-bg);
    padding: 3rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    text-align: center;
}

.login-card h1 {
    font-size: 2rem;
    color: var(--color-primary-dark);
    margin-bottom: 0.5rem;
}

.login-description {
    color: var(--color-text-light);
    margin-bottom: 2rem;
}

.login-note {
    margin-top: 1.5rem;
    color: var(--color-text-muted);
}

/* ==========================================================================
   Forms
   ========================================================================== */
.form-group {
    margin-bottom: 1.5rem;
    text-align: left;
}

.form-group label {
    display: block;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-text);
    margin-bottom: 0.5rem;
}

.form-input {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid var(--color-border);
    border-radius: var(--radius);
    font-family: var(--font-body);
    font-size: 1rem;
    color: var(--color-text);
    background: white;
    transition: var(--transition);
}

.form-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(67, 56, 202, 0.1);
}

.form-input-small {
    padding: 0.4rem 0.6rem;
    font-size: 0.85rem;
}

.login-form {
    text-align: left;
}

.upload-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

/* ==========================================================================
   Alerts
   ========================================================================== */
.alert {
    padding: 1rem 1.5rem;
    border-radius: var(--radius);
    margin-bottom: 1.5rem;
    font-size: 0.95rem;
}

.alert-success {
    background: #ecfdf5;
    color: #065f46;
    border: 1px solid #a7f3d0;
}

.alert-error {
    background: #fef2f2;
    color: #991b1b;
    border: 1px solid #fecaca;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
    text-align: center;
    padding: 2rem;
    color: var(--color-text-muted);
    font-size: 0.85rem;
    border-top: 1px solid var(--color-border);
}

.site-footer p {
    margin-bottom: 0.25rem;
}

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width: 768px) {
    .site-header {
        padding: 0.75rem 1rem;
    }
    
    .header-logo {
        font-size: 1.2rem;
    }
    
    .nav-link {
        padding: 0.4rem 0.6rem;
        font-size: 0.8rem;
    }
    
    .hero {
        padding: 5rem 1.5rem 3rem;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.2rem;
    }
    
    .qcm-answers {
        grid-template-columns: 1fr;
    }
    
    .qcm-image-frame {
        max-height: 40vh;
        min-height: 200px;
    }
    
    #qcm-canvas {
        max-height: 40vh;
        min-height: 200px;
    }
    
    .image-item {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .image-actions {
        width: 100%;
    }
    
    .rename-form .form-input-small {
        width: 100px;
    }
    
    .section {
        padding: 3rem 1.5rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .btn-large {
        padding: 0.85rem 1.5rem;
        font-size: 1rem;
    }
    
    .qcm-question h2 {
        font-size: 1.3rem;
    }
    
    .answer-btn {
        padding: 1rem;
        font-size: 0.9rem;
    }
}

/* ==========================================================================
   Accessibility: Focus visible
   ========================================================================== */
:focus-visible {
    outline: 3px solid var(--color-primary-light);
    outline-offset: 2px;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
}