/* ============================================
   ClassePulse - Site Vitrine
   Styles reprenant le thème de l'application
   ============================================ */

/* Variables CSS - Reprenant le thème de l'application */
:root {
    /* Couleurs principales */
    --primary: #b66dff;
    --primary-gradient: linear-gradient(to right, #da8cff, #9a55ff);
    --primary-dark: #9a55ff;
    --primary-light: #da8cff;
    
    /* Couleurs secondaires */
    --success: #1bcfb4;
    --info: #198ae3;
    --warning: #fed713;
    --danger: #fe7c96;
    
    /* Couleurs de fond */
    --bg-primary: #f2edf3;
    --bg-white: #ffffff;
    --bg-dark: #3e4b5b;
    --bg-light: #f8f9fa;
    
    /* Couleurs de texte */
    --text-primary: #343a40;
    --text-secondary: #6c757d;
    --text-muted: #9c9fa6;
    --text-white: #ffffff;
    
    /* Bordures */
    --border-color: #ebedf2;
    
    /* Police */
    --font-family: 'Ubuntu', sans-serif;
    
    /* Espacements */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    
    /* Ombres */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.15);
    --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.2);
}

/* Reset et base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    overflow-x: hidden;
}

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

/* Navigation */
.navbar {
    background: var(--bg-white);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: var(--spacing-sm) 0;
}

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

.logo-text {
    font-size: 1.75rem;
    font-weight: 700;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: inline-block;
}

.logo a {
    text-decoration: none;
}

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

.nav-links a {
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 500;
    transition: color 0.3s ease;
    white-space: nowrap;
}

.nav-links a:hover {
    color: var(--primary);
}

.nav-links a.active {
    color: var(--primary);
    font-weight: 700;
}

/* Menu hamburger pour mobile */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-around;
    width: 30px;
    height: 30px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 1001;
}

.mobile-menu-toggle span {
    width: 100%;
    height: 3px;
    background: var(--text-primary);
    border-radius: 3px;
    transition: all 0.3s ease;
    transform-origin: center;
}

.mobile-menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(8px, 8px);
}

.mobile-menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(8px, -8px);
}

.btn-primary {
    background: var(--primary-gradient);
    color: var(--text-white);
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 500;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

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

/* Hero Section */
.hero {
    position: relative;
    padding: var(--spacing-xl) 0;
    background: var(--primary-gradient);
    color: var(--text-white);
    overflow: hidden;
    min-height: 600px;
    display: flex;
    align-items: center;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1440 320"><path fill="rgba(255,255,255,0.1)" d="M0,96L48,112C96,128,192,160,288,160C384,160,480,128,576,122.7C672,117,768,139,864,154.7C960,171,1056,181,1152,165.3C1248,149,1344,107,1392,85.3L1440,64L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z"></path></svg>') no-repeat bottom;
    background-size: cover;
    opacity: 0.3;
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-lg);
    opacity: 0.95;
    line-height: 1.6;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 1rem 2rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    border: 2px solid transparent;
    cursor: pointer;
}

.btn-gradient {
    background: var(--bg-white);
    color: var(--primary);
    box-shadow: var(--shadow-md);
}

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

.btn-outline {
    background: transparent;
    color: var(--text-white);
    border-color: var(--text-white);
}

.btn-outline:hover {
    background: var(--text-white);
    color: var(--primary);
}

.btn-large {
    padding: 1.25rem 2.5rem;
    font-size: 1.125rem;
}

/* Sections */
.section {
    padding: var(--spacing-xl) 0;
}

.section-alt {
    background: var(--bg-white);
}

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

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* Target Grid */
.target-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.target-card {
    background: var(--bg-white);
    padding: var(--spacing-md);
    border-radius: 12px;
    box-shadow: var(--shadow-md);
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

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

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

.target-card h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.target-card p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Feature Blocks */
.feature-block {
    margin-bottom: var(--spacing-xl);
}

.feature-title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    text-align: center;
    color: var(--text-primary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.feature-card {
    background: var(--bg-white);
    padding: var(--spacing-md);
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border-top: 4px solid var(--primary);
}

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

.feature-icon {
    width: 50px;
    height: 50px;
    background: var(--primary-gradient);
    color: var(--text-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-sm);
    font-weight: 700;
    font-size: 1.5rem;
}

.feature-card h4 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* Modes Grid */
.modes-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.mode-card {
    background: var(--bg-white);
    padding: var(--spacing-md);
    border-radius: 12px;
    box-shadow: var(--shadow-md);
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

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

.mode-icon {
    font-size: 4rem;
    margin-bottom: var(--spacing-sm);
}

.mode-card h4 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.mode-card p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Security Grid */
.security-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.security-card {
    background: var(--bg-white);
    padding: var(--spacing-md);
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

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

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

.security-card h4 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

.security-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* CTA Section */
.cta-section {
    background: var(--primary-gradient);
    color: var(--text-white);
    padding: var(--spacing-xl) 0;
    text-align: center;
}

.cta-content h2 {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
}

.cta-content p {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-lg);
    opacity: 0.95;
}

/* Information sur le programme bêta */
.beta-info {
    max-width: 1200px;
    margin: 0 auto var(--spacing-lg);
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
}

.beta-info-card {
    background: var(--bg-white);
    padding: var(--spacing-md);
    border-radius: 12px;
    box-shadow: var(--shadow-md);
    border-left: 4px solid var(--primary);
}

.beta-info-card.beta-warning {
    border-left-color: var(--warning);
    background: rgba(254, 215, 19, 0.05);
}

.beta-info-card h3 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.beta-info-card p {
    color: var(--text-secondary);
    line-height: 1.6;
    margin: 0;
}

/* Formulaire de demande bêta */
.form-container {
    max-width: 1200px;
    margin: 0 auto;
    background: var(--bg-white);
    padding: var(--spacing-lg);
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
}

.beta-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.form-group label {
    font-weight: 500;
    color: var(--text-primary);
    font-size: 0.95rem;
}

.form-group input,
.form-group textarea {
    padding: 0.75rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-family: var(--font-family);
    font-size: 1rem;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
    background: var(--bg-white);
    color: var(--text-primary);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(182, 109, 255, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.form-message {
    padding: var(--spacing-sm);
    border-radius: 8px;
    margin-bottom: var(--spacing-md);
    font-weight: 500;
}

.form-message-success {
    background: rgba(27, 207, 180, 0.1);
    color: var(--success);
    border: 2px solid var(--success);
}

.form-message-error {
    background: rgba(254, 124, 150, 0.1);
    color: var(--danger);
    border: 2px solid var(--danger);
}

#submitBtn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

@media (max-width: 768px) {
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .form-container {
        padding: var(--spacing-md);
    }
    
    .beta-info {
        grid-template-columns: 1fr;
    }
}

/* Footer */
.footer {
    background: var(--bg-dark);
    color: var(--text-white);
    padding: var(--spacing-lg) 0 var(--spacing-md);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.footer-section h3,
.footer-section h4 {
    margin-bottom: var(--spacing-sm);
    color: var(--text-white);
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: var(--spacing-xs);
}

.footer-section a {
    color: var(--text-white);
    text-decoration: none;
    opacity: 0.8;
    transition: opacity 0.3s ease;
}

.footer-section a:hover {
    opacity: 1;
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    opacity: 0.8;
}

.footer-bottom a {
    color: var(--text-white);
    text-decoration: none;
    opacity: 0.8;
    transition: opacity 0.3s ease;
}

.footer-bottom a:hover {
    opacity: 1;
    text-decoration: underline;
}

/* Responsive */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.125rem;
    }
    
    /* Menu mobile */
    .mobile-menu-toggle {
        display: flex;
    }
    
    .nav-links {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--bg-white);
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        padding: var(--spacing-md);
        box-shadow: var(--shadow-lg);
        transform: translateX(-100%);
        transition: transform 0.3s ease;
        z-index: 999;
        max-height: calc(100vh - 70px);
        overflow-y: auto;
    }
    
    .nav-links.active {
        transform: translateX(0);
    }
    
    .nav-links a {
        padding: var(--spacing-sm) var(--spacing-md);
        border-bottom: 1px solid var(--border-color);
        display: block;
        text-align: left;
    }
    
    .nav-links a:last-child {
        border-bottom: none;
        margin-top: var(--spacing-sm);
    }
    
    .nav-links .btn-primary {
        text-align: center;
        margin-top: var(--spacing-sm);
    }
    
    .section-header h2 {
        font-size: 2rem;
    }
    
    .modes-grid {
        grid-template-columns: 1fr;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .features-grid,
    .target-grid,
    .security-grid {
        grid-template-columns: 1fr;
    }
    
    .nav-links {
        top: 60px;
    }
    
    .logo h1 {
        font-size: 1.5rem;
    }

    .logo a {
        text-decoration: none;
    }
    
    .mobile-menu-toggle {
        width: 25px;
        height: 25px;
    }
}