/* =====================================================
   PATRICK ZBARDI - SITE D'AUTEUR PREMIUM
   Theme: Thriller Technologique Sombre
   ===================================================== */

/* =====================================================
   1. VARIABLES & RESET
   ===================================================== */

:root {
    /* Couleurs principales */
    --color-primary: #1a1a2e;
    --color-secondary: #16213e;
    --color-accent: #0f4c75;
    --color-accent-light: #3282b8;
    --color-text: #e0e0e0;
    --color-text-muted: #a0a0a0;
    --color-bg: #0a0a0f;
    --color-bg-light: #151520;
    --color-white: #ffffff;
    --color-danger: #e63946;
    
    /* Typographie */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-heading: 'Montserrat', sans-serif;
    --font-serif: 'Cormorant Garamond', serif;
    
    /* Espacements */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Ombres */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    
    /* Border radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
}

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

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

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

/* =====================================================
   2. TYPOGRAPHIE
   ===================================================== */

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
    color: var(--color-white);
}

h1 { font-size: clamp(2.5rem, 5vw, 4rem); }
h2 { font-size: clamp(2rem, 4vw, 3rem); }
h3 { font-size: clamp(1.5rem, 3vw, 2rem); }
h4 { font-size: 1.25rem; }

p {
    margin-bottom: var(--spacing-sm);
    line-height: 1.8;
}

.lead-text {
    font-size: 1.25rem;
    font-weight: 300;
    line-height: 1.6;
    color: var(--color-accent-light);
}

.section-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--color-accent-light);
    margin-bottom: var(--spacing-xs);
}

.section-title {
    margin-bottom: var(--spacing-md);
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-md);
}

/* =====================================================
   3. CONTENEURS & LAYOUT
   ===================================================== */

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

section {
    padding: var(--spacing-xl) 0;
}

.section-header {
    text-align: center;
    max-width: 800px;
    margin: 0 auto var(--spacing-lg);
}

/* =====================================================
   4. NAVIGATION
   ===================================================== */

#mainNav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: transparent;
    transition: all var(--transition-normal);
}

#mainNav.nav-scrolled {
    background: rgba(10, 10, 15, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) 0;
}

.logo-text {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--color-white);
    letter-spacing: -0.5px;
    text-decoration: none;
}

.nav-menu {
    display: flex;
    list-style: none;
    align-items: center;
    gap: var(--spacing-md);
}

.nav-link {
    color: var(--color-text);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9375rem;
    transition: color var(--transition-fast);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-accent-light);
    transition: width var(--transition-normal);
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-accent-light);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.btn-nav-primary {
    padding: 0.625rem 1.5rem;
    background: var(--color-accent);
    color: var(--color-white);
    text-decoration: none;
    border-radius: var(--radius-sm);
    font-weight: 600;
    transition: all var(--transition-fast);
    position: relative;
    z-index: 100;
    cursor: pointer;
}

.btn-nav-primary:hover {
    background: var(--color-accent-light);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* Mobile Menu Toggle */
.nav-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 5px;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: var(--color-white);
    transition: all var(--transition-fast);
}

@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 70px;
        right: -100%;
        flex-direction: column;
        background: rgba(10, 10, 15, 0.98);
        width: 80%;
        max-width: 300px;
        height: calc(100vh - 70px);
        padding: var(--spacing-md);
        align-items: flex-start;
        transition: right var(--transition-normal);
        box-shadow: var(--shadow-lg);
    }
    
    .nav-menu.active {
        right: 0;
    }
}

/* =====================================================
   5. HERO SECTION
   ===================================================== */

.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: linear-gradient(135deg, #0a0a0f 0%, #16213e 100%);
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 50% 50%, transparent 0%, rgba(10,10,15,0.8) 100%);
    z-index: 1;
}

.hero-particles {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 0;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    padding: var(--spacing-xl) 0;
}

.hero-subtitle {
    display: block;
    font-size: 1rem;
    font-weight: 500;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--color-accent-light);
    margin-bottom: var(--spacing-md);
}

.hero-title {
    font-size: clamp(4rem, 10vw, 8rem);
    font-weight: 800;
    line-height: 0.9;
    margin-bottom: var(--spacing-md);
    letter-spacing: -2px;
}

.title-highlight {
    display: block;
    color: var(--color-accent-light);
    text-shadow: 0 0 30px rgba(50, 130, 184, 0.5);
}

.hero-description {
    font-size: 1.25rem;
    line-height: 1.8;
    max-width: 700px;
    margin: 0 auto var(--spacing-lg);
    color: var(--color-text);
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: var(--spacing-xl);
}

.hero-scroll {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 0.875rem;
    color: var(--color-text-muted);
    opacity: 0.6;
}

.scroll-line {
    width: 1px;
    height: 60px;
    background: linear-gradient(to bottom, var(--color-accent-light), transparent);
    animation: scrollIndicator 2s infinite;
}

@keyframes scrollIndicator {
    0%, 100% { transform: translateY(0); opacity: 1; }
    50% { transform: translateY(20px); opacity: 0.3; }
}

/* =====================================================
   6. BUTTONS
   ===================================================== */

.btn-primary,
.btn-secondary,
.btn-text,
.btn-cta {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: var(--radius-md);
    transition: all var(--transition-normal);
    cursor: pointer;
    border: none;
    font-size: 1rem;
}

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

.btn-primary:hover {
    background: var(--color-accent-light);
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

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

.btn-secondary:hover {
    background: var(--color-accent);
    transform: translateY(-3px);
}

.btn-text {
    background: transparent;
    color: var(--color-accent-light);
    padding: 0.5rem 0;
    font-weight: 500;
}

.btn-text:hover {
    color: var(--color-accent-light);
    transform: translateX(5px);
}

.btn-cta {
    padding: 1.25rem 2.5rem;
    font-size: 1.125rem;
    box-shadow: var(--shadow-lg);
    position: relative;
    z-index: 10;
    cursor: pointer;
}

.btn-cta.amazon {
    background: #FF9900;
    color: #000;
}

.btn-cta.amazon:hover {
    background: #FFB84D;
    transform: translateY(-3px) scale(1.05);
}

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

/* =====================================================
   7. ABOUT PREVIEW SECTION
   ===================================================== */

.about-preview {
    background: var(--color-bg-light);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    align-items: center;
}

.image-frame {
    position: relative;
    overflow: hidden;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

.image-frame img {
    width: 100%;
    height: auto;
    display: block;
    transition: transform var(--transition-slow);
}

.image-frame:hover img {
    transform: scale(1.05);
}

@media (max-width: 768px) {
    .about-grid {
        grid-template-columns: 1fr;
    }
}

/* =====================================================
   8. BOOK TEASER
   ===================================================== */

.book-teaser {
    background: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-primary) 100%);
}

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

.excerpt-box {
    background: rgba(0, 0, 0, 0.3);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    border-left: 4px solid var(--color-accent-light);
    max-width: 900px;
    margin: 0 auto;
}

.excerpt {
    font-family: var(--font-serif);
    font-size: 1.125rem;
    line-height: 1.9;
    color: var(--color-text);
    margin: 0;
}

.excerpt p {
    margin-bottom: var(--spacing-md);
}

.excerpt-highlight {
    color: var(--color-accent-light);
    font-style: italic;
}

.excerpt-final {
    font-weight: 600;
    font-size: 1.25rem;
    color: var(--color-white);
}

.excerpt-cta {
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
}

.excerpt-note {
    margin-bottom: var(--spacing-md);
}

/* =====================================================
   9. FEATURES SECTION
   ===================================================== */

.features {
    background: var(--color-bg);
}

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

.feature-card {
    padding: var(--spacing-lg);
    background: var(--color-bg-light);
    border-radius: var(--radius-md);
    text-align: center;
    transition: all var(--transition-normal);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-accent);
}

.feature-icon {
    font-size: 3rem;
    color: var(--color-accent-light);
    margin-bottom: var(--spacing-sm);
}

.feature-card h3 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
}

.feature-card p {
    color: var(--color-text-muted);
    margin: 0;
}

/* =====================================================
   10. CTA SECTION
   ===================================================== */

.cta-section {
    background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-light) 100%);
    text-align: center;
}

.cta-content h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: var(--spacing-sm);
}

.cta-content p {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-lg);
}

.cta-buttons {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: var(--spacing-md);
}

.cta-details {
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
    margin-top: var(--spacing-md);
}

.detail-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--color-white);
    opacity: 0.9;
}

.detail-item i {
    font-size: 1.125rem;
}

/* =====================================================
   11. NEWSLETTER SECTION
   ===================================================== */

.newsletter-section {
    background: var(--color-bg-light);
}

.newsletter-box {
    max-width: 700px;
    margin: 0 auto;
    padding: var(--spacing-lg);
    background: var(--color-secondary);
    border-radius: var(--radius-lg);
    text-align: center;
    box-shadow: var(--shadow-md);
}

.newsletter-content h3 {
    margin-bottom: var(--spacing-sm);
}

.newsletter-content p {
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-md);
}

.newsletter-form {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.newsletter-input {
    flex: 1;
    padding: 1rem 1.5rem;
    background: var(--color-bg);
    border: 2px solid transparent;
    border-radius: var(--radius-md);
    color: var(--color-text);
    font-size: 1rem;
    transition: all var(--transition-fast);
}

.newsletter-input:focus {
    outline: none;
    border-color: var(--color-accent-light);
}

.btn-newsletter {
    padding: 1rem 2rem;
    background: var(--color-accent);
    color: var(--color-white);
    border: none;
    border-radius: var(--radius-md);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-newsletter:hover {
    background: var(--color-accent-light);
    transform: translateY(-2px);
}

.newsletter-note {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    margin: 0;
}

@media (max-width: 768px) {
    .newsletter-form {
        flex-direction: column;
    }
}

/* =====================================================
   12. FOOTER
   ===================================================== */

.footer {
    background: var(--color-primary);
    padding: var(--spacing-xl) 0 var(--spacing-md);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.footer-col h4 {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-sm);
}

.footer-col p {
    color: var(--color-text-muted);
    font-size: 0.9375rem;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 0.5rem;
}

.footer-links a,
.footer-contact a {
    color: var(--color-text-muted);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.footer-links a:hover,
.footer-contact a:hover {
    color: var(--color-accent-light);
}

.footer-contact {
    list-style: none;
}

.footer-contact li {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
}

.social-links {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-sm);
}

.social-links a {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-secondary);
    color: var(--color-text);
    border-radius: 50%;
    transition: all var(--transition-fast);
}

.social-links a:hover {
    background: var(--color-accent);
    color: var(--color-white);
    transform: translateY(-3px);
}

.footer-bottom {
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.footer-bottom p {
    margin: 0;
    color: var(--color-text-muted);
    font-size: 0.875rem;
}

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

.footer-legal a {
    color: var(--color-text-muted);
    text-decoration: none;
    font-size: 0.875rem;
    transition: color var(--transition-fast);
}

.footer-legal a:hover {
    color: var(--color-accent-light);
}

/* =====================================================
   13. BACK TO TOP BUTTON
   ===================================================== */

.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--color-accent);
    color: var(--color-white);
    border: none;
    border-radius: 50%;
    font-size: 1.25rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
    z-index: 999;
    box-shadow: var(--shadow-md);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: var(--color-accent-light);
    transform: translateY(-5px);
}

/* =====================================================
   14. RESPONSIVE
   ===================================================== */

@media (max-width: 1024px) {
    :root {
        font-size: 15px;
    }
    
    section {
        padding: var(--spacing-lg) 0;
    }
}

@media (max-width: 768px) {
    :root {
        font-size: 14px;
    }
    
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .hero-title {
        font-size: 3rem;
    }
    
    .cta-buttons,
    .hero-buttons {
        flex-direction: column;
        align-items: stretch;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
}

/* =====================================================
   15. UTILITAIRES
   ===================================================== */

.text-center { text-align: center; }
.text-right { text-align: right; }
.mb-0 { margin-bottom: 0 !important; }
.mt-0 { margin-top: 0 !important; }

/* Animations AOS override */
[data-aos] {
    pointer-events: auto;
}

/* Selection */
::selection {
    background: var(--color-accent-light);
    color: var(--color-white);
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--color-bg);
}

::-webkit-scrollbar-thumb {
    background: var(--color-accent);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-accent-light);
}

/* =====================================================
   16. RESPONSIVE - PATCH (Mobile first)
   Objectif : éviter tout débordement horizontal + améliorer la lisibilité
   ===================================================== */

/* Empêche les débordements horizontaux involontaires */
html, body { overflow-x: hidden; }
img, video, iframe { max-width: 100%; height: auto; }

/* Petits écrans */
@media (max-width: 480px) {
  .hero-title { font-size: 2.2rem; line-height: 1.05; }
  .hero-subtitle { font-size: 1rem; }
  .section-title { font-size: 1.6rem; }
  .btn-primary, .btn-secondary, .btn-nav-primary { width: 100%; text-align: center; }
  .nav-menu { width: 100%; max-width: none; }
  .nav-content { padding: 0.75rem 0; }
  .footer-legal { display: flex; flex-wrap: wrap; gap: 0.5rem; justify-content: center; }
}