/* ===================================
   RESET & BASE STYLES
   =================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Couleurs principales */
    --color-primary: #1a1a2e;
    --color-secondary: #16213e;
    --color-accent: #e94560;
    --color-gold: #d4af37;
    --color-light: #f8f9fa;
    --color-white: #ffffff;
    
    /* Typographie */
    --font-display: 'Playfair Display', serif;
    --font-body: 'Inter', sans-serif;
    
    /* Espacements */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    
    /* Transitions */
    --transition-base: 0.3s ease;
    
    /* Ombres */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.2);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-primary);
    background-color: var(--color-light);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.top-header {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    z-index: 10;
    padding: var(--spacing-sm) 0;
    background: transparent;
    backdrop-filter: none;
}

.top-header-content {
    display: flex;
    justify-content: flex-end;
    align-items: center;
}

/* ===================================
   CONTAINER
   =================================== */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
}

@media (min-width: 768px) {
    .container {
        padding: 0 var(--spacing-md);
    }
}

/* ===================================
   HERO SECTION
   =================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    overflow: hidden;
    background: linear-gradient(135deg, #1f2227 0%, #15171b 100%);
    padding-top: 72px;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(135deg, rgba(31, 34, 39, 0.88) 0%, rgba(21, 23, 27, 0.88) 100%),
        radial-gradient(circle at 20% 50%, rgba(212, 175, 55, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(233, 69, 96, 0.15) 0%, transparent 50%),
        url('/images/background.jpg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

.hero-content {
    position: relative;
    z-index: 2;
    padding: var(--spacing-md) 0;
}

.lang-switch {
    display: inline-flex;
    gap: 0.25rem;
    padding: 0.25rem;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.18);
    backdrop-filter: blur(10px);
}

.lang-btn {
    appearance: none;
    border: 0;
    background: transparent;
    color: rgba(255, 255, 255, 0.9);
    font-family: var(--font-body);
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    padding: 0.5rem 0.75rem;
    border-radius: 999px;
    cursor: pointer;
    transition: background var(--transition-base), color var(--transition-base), opacity var(--transition-base);
}

.lang-btn:hover {
    opacity: 0.9;
}

.lang-btn.active,
.lang-btn[aria-pressed="true"] {
    background: rgba(255, 255, 255, 0.18);
    color: var(--color-white);
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 0.5rem 1rem;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 50px;
    color: var(--color-white);
    font-size: 0.875rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--spacing-md);
    animation: fadeInDown 0.8s ease;
}

.badge-dot {
    width: 8px;
    height: 8px;
    background: var(--color-accent);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.6;
        transform: scale(1.2);
    }
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 8vw, 5rem);
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: var(--spacing-sm);
    letter-spacing: 0.02em;
    animation: fadeInUp 1s ease 0.2s both;
}

.hero-subtitle {
    font-family: var(--font-display);
    font-size: clamp(1.25rem, 4vw, 2rem);
    font-weight: 400;
    color: var(--color-gold);
    font-style: italic;
    margin-bottom: var(--spacing-md);
    animation: fadeInUp 1s ease 0.4s both;
}

.hero-dates {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-family: var(--font-display);
    font-size: clamp(2rem, 6vw, 4rem);
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: var(--spacing-md);
    animation: fadeInUp 1s ease 0.6s both;
}

.hero-dates .separator {
    color: var(--color-gold);
}

.hero-dates .month {
    font-size: clamp(1.25rem, 3vw, 2rem);
    font-weight: 400;
    color: var(--color-gold);
    margin-left: 0.5rem;
}

.hero-tagline {
    font-size: clamp(1rem, 2.5vw, 1.25rem);
    color: rgba(255, 255, 255, 0.9);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.8;
    animation: fadeInUp 1s ease 0.8s both;
}

.scroll-indicator {
    position: absolute;
    bottom: var(--spacing-md);
    left: 50%;
    transform: translateX(-50%);
    color: var(--color-white);
    font-size: 2rem;
    animation: bounce 2s infinite;
    opacity: 0.7;
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateX(-50%) translateY(0);
    }
    40% {
        transform: translateX(-50%) translateY(-10px);
    }
    60% {
        transform: translateX(-50%) translateY(-5px);
    }
}

/* ===================================
   NEWSLETTER SECTION
   =================================== */
.newsletter {
    padding: var(--spacing-xl) 0;
    background: var(--color-white);
}

.privacy-policy {
    padding: var(--spacing-xl) 0;
    background: var(--color-light);
}

.privacy-card {
    background: var(--color-white);
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    padding: var(--spacing-md);
}

.privacy-content {
    max-width: 900px;
    margin: 0 auto;
    color: var(--color-secondary);
}

.privacy-content h3 {
    font-family: var(--font-display);
    color: var(--color-primary);
    font-size: 1.25rem;
    margin-top: var(--spacing-md);
    margin-bottom: var(--spacing-xs);
}

.privacy-content p {
    margin-top: 0.75rem;
}

.privacy-content ul {
    margin: 0.75rem 0 0.75rem 1.25rem;
}

.privacy-content li {
    margin: 0.35rem 0;
}

.privacy-content a {
    color: var(--color-accent);
    text-decoration: underline;
}

.newsletter-content {
    max-width: 600px;
    margin: 0 auto;
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 700;
    color: var(--color-primary);
    text-align: center;
    margin-bottom: var(--spacing-sm);
}

.section-description {
    font-size: 1.125rem;
    color: var(--color-secondary);
    text-align: center;
    margin-bottom: var(--spacing-lg);
    opacity: 0.9;
}

/* ===================================
   FORM STYLES
   =================================== */
.newsletter-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.honeypot {
    position: absolute;
    left: -9999px;
    width: 1px;
    height: 1px;
    opacity: 0;
}

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

.form-label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-primary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.form-input {
    width: 100%;
    padding: 1rem 1.25rem;
    font-size: 1rem;
    font-family: var(--font-body);
    color: var(--color-primary);
    background: var(--color-light);
    border: 2px solid transparent;
    border-radius: 8px;
    transition: all var(--transition-base);
    outline: none;
}

.form-input:focus {
    background: var(--color-white);
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(233, 69, 96, 0.1);
}

.form-input.error {
    border-color: var(--color-accent);
}

.checkbox-group {
    margin-top: var(--spacing-xs);
}

.checkbox-label {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    cursor: pointer;
    user-select: none;
}

.checkbox-label input[type="checkbox"] {
    margin-top: 0.25rem;
    width: 20px;
    height: 20px;
    cursor: pointer;
    accent-color: var(--color-accent);
}

.checkbox-text {
    font-size: 0.875rem;
    color: var(--color-secondary);
    line-height: 1.6;
}

.link {
    color: var(--color-accent);
    text-decoration: underline;
    transition: opacity var(--transition-base);
}

.link:hover {
    opacity: 0.8;
}

.error-message {
    display: none;
    font-size: 0.875rem;
    color: var(--color-accent);
    margin-top: 0.25rem;
}

.error-message.visible {
    display: block;
}

/* ===================================
   BUTTON STYLES
   =================================== */
.btn {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 1rem 2.5rem;
    font-size: 1rem;
    font-weight: 600;
    font-family: var(--font-body);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all var(--transition-base);
    outline: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-accent) 0%, #c93756 100%);
    color: var(--color-white);
    box-shadow: var(--shadow-md);
}

.btn-primary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-primary:active:not(:disabled) {
    transform: translateY(0);
}

.btn-primary:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

.btn-loader {
    display: none;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-top-color: var(--color-white);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin-left: var(--spacing-sm);
}

.btn.loading .btn-text {
    opacity: 0.7;
}

.btn.loading .btn-loader {
    display: inline-block;
}

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

/* ===================================
   FORM FEEDBACK
   =================================== */
.form-feedback {
    display: none;
    padding: 1rem 1.25rem;
    border-radius: 8px;
    font-size: 1rem;
    margin-top: var(--spacing-md);
    animation: slideIn 0.3s ease;
}

.form-feedback.visible {
    display: block;
}

.form-feedback.success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.form-feedback.error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===================================
   FOOTER
   =================================== */
.footer {
    background: var(--color-primary);
    color: var(--color-white);
    padding: var(--spacing-lg) 0 var(--spacing-md);
}

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

.footer-main {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    text-align: center;
}

.footer-copyright {
    font-size: 0.875rem;
    opacity: 0.8;
}

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

.footer-link {
    color: var(--color-gold);
    text-decoration: none;
    font-size: 0.875rem;
    transition: opacity var(--transition-base);
}

.footer-link:hover {
    opacity: 0.8;
    text-decoration: underline;
}

.footer-note {
    font-size: 0.75rem;
    text-align: center;
    opacity: 0.6;
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.6;
}

/* ===================================
   RESPONSIVE DESIGN
   =================================== */
@media (min-width: 768px) {
    .newsletter {
        padding: var(--spacing-xl) 0 calc(var(--spacing-xl) + var(--spacing-md));
    }
    
    .footer-main {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
        text-align: left;
    }
    
    .footer-links {
        flex-direction: row;
        gap: var(--spacing-md);
    }
}

@media (min-width: 1024px) {
    .hero-content {
        padding: var(--spacing-lg) 0;
    }
}

/* ===================================
   ACCESSIBILITY
   =================================== */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Focus visible pour accessibilité clavier */
:focus-visible {
    outline: 3px solid var(--color-accent);
    outline-offset: 2px;
}

/* Amélioration du contraste pour les utilisateurs */
@media (prefers-contrast: high) {
    :root {
        --color-primary: #000000;
        --color-secondary: #1a1a1a;
    }
}