/* ========================================
   FIDELIS - DESIGN SYSTEM 2025
   Modern, Bold, Premium
   ======================================== */

:root {
    /* Palette de couleurs moderne */
    --bg-primary: #0a0e27;
    --bg-secondary: #0f1629;
    --surface: #1a1f3a;
    --surface-elevated: #252b4a;

    /* Backgrounds clairs pour sections alternées */
    --bg-light: #f8f9fe;
    --bg-white: #ffffff;

    /* Textes */
    --text-primary: #ffffff;
    --text-secondary: #b4b8d6;
    --text-muted: #767b9a;
    --text-dark: #0a0e27;
    --text-dark-secondary: #4a5578;

    /* Bleu principal - Version premium */
    --primary: #1976d2;
    --primary-light: #42a5f5;
    --primary-lighter: #64b5f6;
    --primary-dark: #1565c0;
    --primary-glow: rgba(25, 118, 210, 0.3);

    /* Accents */
    --accent-purple: #7c3aed;
    --accent-cyan: #06b6d4;
    --accent-pink: #ec4899;
    --success: #10b981;
    --warning: #f59e0b;

    /* Dégradés modernes */
    --gradient-primary: linear-gradient(135deg, #1976d2 0%, #42a5f5 100%);
    --gradient-hero: linear-gradient(135deg, #1976d2 0%, #7c3aed 50%, #ec4899 100%);
    --gradient-dark: linear-gradient(180deg, #0a0e27 0%, #1a1f3a 100%);
    --gradient-card: linear-gradient(135deg, rgba(255, 255, 255, 0.1) 0%, rgba(255, 255, 255, 0.05) 100%);

    /* Glassmorphism */
    --glass-bg: rgba(255, 255, 255, 0.1);
    --glass-border: rgba(255, 255, 255, 0.2);
    --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);

    /* Ombres premium */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.12);
    --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.16);
    --shadow-2xl: 0 24px 64px rgba(0, 0, 0, 0.2);
    --shadow-glow: 0 0 40px var(--primary-glow);
    --shadow-glow-strong: 0 0 60px rgba(25, 118, 210, 0.5);

    /* Border radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-2xl: 32px;
    --radius-full: 9999px;

    /* Spacing */
    --spacing-xs: 8px;
    --spacing-sm: 16px;
    --spacing-md: 24px;
    --spacing-lg: 32px;
    --spacing-xl: 48px;
    --spacing-2xl: 64px;
    --spacing-3xl: 96px;

    /* Container */
    --container: 1320px;

    /* Transitions */
    --transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: all 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
}

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

html {
    font-size: 100%;
    /* 16px */
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
    overflow-x: visible;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-dark);
    background: var(--bg-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

/* ========================================
   UTILITIES
   ======================================== */
.container {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.eyebrow {
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--primary);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 16px;
}

.eyebrow::before {
    content: '';
    width: 32px;
    height: 2px;
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
}

/* ========================================
   TYPOGRAPHY
   ======================================== */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: 800;
    line-height: 1.2;
    letter-spacing: -0.02em;
    color: var(--text-dark);
}

h1 {
    font-size: clamp(40px, 6vw, 72px);
    letter-spacing: -0.03em;
}

h2 {
    font-size: clamp(32px, 5vw, 56px);
}

h3 {
    font-size: clamp(24px, 3vw, 36px);
}

/* ========================================
   BUTTONS - Ultra moderne
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 16px 32px;
    font-weight: 600;
    font-size: 16px;
    border-radius: var(--radius-full);
    border: none;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    white-space: nowrap;
}

.btn::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.2), transparent);
    opacity: 0;
    transition: var(--transition-fast);
}

.btn:hover::before {
    opacity: 1;
}

/* Bouton Primary avec effet glow */
.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: 0 4px 16px rgba(25, 118, 210, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(25, 118, 210, 0.4);
}

.btn-primary:active {
    transform: translateY(0);
}

/* Bouton Ghost/Outline */
.btn-outline {
    background: transparent;
    color: var(--primary);
    border: 2px solid var(--primary);
}

.btn-outline:hover {
    background: var(--primary);
    color: white;
    transform: translateY(-2px);
}

/* Bouton Glass */
.btn-glass {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    color: white;
}

.btn-glass:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: rgba(255, 255, 255, 0.3);
}

/* Bouton Large */
.btn-lg {
    padding: 20px 40px;
    font-size: 18px;
    font-weight: 700;
}

/* Badge moderne */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    border-radius: var(--radius-full);
    background: rgba(25, 118, 210, 0.1);
    border: 1px solid rgba(25, 118, 210, 0.2);
    color: var(--primary);
    font-weight: 600;
    font-size: 14px;
}

.badge-glow {
    animation: pulse-glow 2s ease-in-out infinite;
}

@keyframes pulse-glow {

    0%,
    100% {
        box-shadow: 0 0 20px rgba(25, 118, 210, 0.3);
    }

    50% {
        box-shadow: 0 0 30px rgba(25, 118, 210, 0.5);
    }
}

/* ========================================
   HEADER - Design futuriste
   ======================================== */
header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    transition: var(--transition-fast);
}

header.scrolled {
    background: rgba(255, 255, 255, 0.95);
    box-shadow: var(--shadow-md);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 0;
    gap: 40px;
}

.nav-left {
    display: flex;
    align-items: center;
    gap: 64px;
}

/* Logo moderne */
.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 800;
    font-size: 24px;
    color: var(--text-dark);
    position: relative;
}

.logo img {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
}

.brand-name {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Navigation links */
.nav-links {
    display: flex;
    gap: 8px;
    align-items: center;
}

.nav-links a {
    color: var(--text-dark-secondary);
    font-weight: 500;
    font-size: 15px;
    padding: 10px 20px;
    border-radius: var(--radius-md);
    position: relative;
    transition: var(--transition-fast);
}

.nav-links a::before {
    content: '';
    position: absolute;
    bottom: 8px;
    left: 50%;
    transform: translateX(-50%) scaleX(0);
    width: 20px;
    height: 2px;
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
    transition: var(--transition-fast);
}

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

.nav-links a:hover::before,
.nav-links a.active::before {
    transform: translateX(-50%) scaleX(1);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

/* ========================================
   MOBILE MENU - Amélioré
   ======================================== */
#nav-toggle {
    display: none;
}

.hamburger {
    display: none;
    width: 44px;
    height: 44px;
    border-radius: var(--radius-md);
    border: 2px solid rgba(25, 118, 210, 0.2);
    background: white;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition-fast);
}

.hamburger:hover {
    border-color: var(--primary);
    background: rgba(25, 118, 210, 0.05);
}

.hamburger span {
    width: 20px;
    height: 2px;
    background: var(--primary);
    position: relative;
    display: block;
    transition: var(--transition-fast);
}

.hamburger span::before,
.hamburger span::after {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    height: 2px;
    background: inherit;
    transition: var(--transition-fast);
}

.hamburger span::before {
    top: -6px;
}

.hamburger span::after {
    top: 6px;
}

#nav-toggle:checked~.nav .hamburger span {
    background: transparent;
}

#nav-toggle:checked~.nav .hamburger span::before {
    top: 0;
    transform: rotate(45deg);
}

#nav-toggle:checked~.nav .hamburger span::after {
    top: 0;
    transform: rotate(-45deg);
}

.mobile-menu {
    position: fixed;
    top: 85px;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    max-height: 0;
    overflow: hidden;
    transition: var(--transition);
    box-shadow: 0 0 0 rgba(0, 0, 0, 0);
}

#nav-toggle:checked~.mobile-menu {
    max-height: 500px;
    box-shadow: var(--shadow-lg);
}

.mobile-menu-inner {
    padding: 24px;
}

.mobile-menu a {
    display: block;
    padding: 16px 20px;
    color: var(--text-dark-secondary);
    font-weight: 500;
    font-size: 16px;
    border-radius: var(--radius-md);
    margin-bottom: 8px;
    transition: var(--transition-fast);
}

.mobile-menu a:hover,
.mobile-menu a.active {
    background: rgba(25, 118, 210, 0.1);
    color: var(--primary);
}

.mobile-menu .btn {
    width: 100%;
    margin-top: 20px;
}

/* ========================================
   SECTIONS
   ======================================== */
section {
    padding: var(--spacing-3xl) 0;
    position: relative;
}

.section-head {
    text-align: center;
    margin: 0 auto var(--spacing-2xl);
    max-width: 800px;
}

.section-head h2 {
    margin: 16px 0 24px;
}

.section-head p {
    color: var(--text-dark-secondary);
    font-size: 19px;
    line-height: 1.7;
}

/* ========================================
   CTA BANNER - Design premium
   ======================================== */
.cta-banner {
    background: var(--gradient-primary);
    color: white;
    border-radius: var(--radius-2xl);
    padding: var(--spacing-2xl) var(--spacing-xl);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-xl);
    box-shadow: var(--shadow-glow);
    position: relative;
    overflow: hidden;
}

.cta-banner::before {
    content: '';
    position: absolute;
    inset: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    opacity: 0.3;
}

.cta-banner h3 {
    margin: 0 0 16px;
    font-size: clamp(28px, 4vw, 42px);
    color: white;
}

.cta-banner p {
    margin: 0;
    opacity: 0.95;
    line-height: 1.6;
    font-size: 18px;
}

.cta-banner .btn {
    background: white;
    color: var(--primary);
    flex-shrink: 0;
    box-shadow: var(--shadow-xl);
}

.cta-banner .btn:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-2xl);
}

/* ========================================
   FOOTER - Design moderne
   ======================================== */
footer {
    background: var(--bg-primary);
    color: var(--text-secondary);
    position: relative;
    overflow: hidden;
}

footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--spacing-2xl);
    padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 24px;
}

.footer-logo img {
    width: 48px;
    height: 48px;
    border-radius: 12px;
}

.footer-title {
    font-size: 26px;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.brand-col p {
    color: var(--text-secondary);
    max-width: 45ch;
    margin: 16px 0;
    line-height: 1.7;
}

.footer-email a {
    color: var(--primary-light);
    font-weight: 600;
}

.footer-email a:hover {
    color: var(--primary-lighter);
}

.footer-col h4 {
    color: var(--text-primary);
    margin: 0 0 24px;
    font-size: 18px;
    font-weight: 700;
}

.footer-col a {
    color: var(--text-secondary);
    display: block;
    padding: 10px 0;
    transition: var(--transition-fast);
}

.footer-col a:hover {
    color: var(--text-primary);
    padding-left: 8px;
}

.copyright {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: var(--spacing-lg) 0;
    color: var(--text-muted);
    font-size: 14px;
    text-align: center;
}

/* ========================================
   ANIMATIONS
   ======================================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }

    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }

    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }

    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* ========================================
   ACCESSIBILITY
   ======================================== */
:focus-visible {
    outline: 3px solid var(--primary);
    outline-offset: 2px;
    border-radius: var(--radius-sm);
}

@media (prefers-reduced-motion: reduce) {

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    html {
        scroll-behavior: auto;
    }
}

/* ========================================
   RESPONSIVE
   ======================================== */
@media (max-width: 900px) {
    .container {
        padding: 0 20px;
    }

    section {
        padding: var(--spacing-2xl) 0;
    }

    .nav-links {
        display: none;
    }

    .hamburger {
        display: flex;
    }

    .nav-actions .btn:not(.hamburger) {
        display: none;
    }

    .cta-banner {
        flex-direction: column;
        text-align: center;
        padding: var(--spacing-xl) var(--spacing-lg);
    }

    .cta-banner .btn {
        width: 100%;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
        text-align: center;
    }

    .footer-logo {
        justify-content: center;
    }

    .brand-col p {
        margin-inline: auto;
    }
}

@media (max-width: 600px) {
    h1 {
        font-size: 36px;
    }

    h2 {
        font-size: 32px;
    }

    .btn {
        padding: 14px 28px;
    }

    .cta-banner {
        padding: var(--spacing-lg) var(--spacing-md);
    }
}