/* ========================================
   VARIABLES & RESET
   ======================================== */

:root {
    --primary: #f59e0b;
    --primary-dark: #d97706;
    --primary-light: #fbbf24;
    --primary-soft: #fef3c7;
    --dark: #0f172a;
    --dark-soft: #1e293b;
    --text: #334155;
    --text-light: #64748b;
    --text-muted: #94a3b8;
    --bg-light: #f8fafc;
    --bg-white: #ffffff;
    --border: #e2e8f0;
    --success: #10b981;
    --danger: #ef4444;
    --warning: #f59e0b;
    
    --header-h: 80px;
    --header-h-mobile: 70px;
    
    --radius-sm: 8px;
    --radius: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    
    --transition-fast: 0.2s ease;
    --transition: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--header-h);
}

body {
    font-family: 'Inter', sans-serif;
    color: var(--text);
    background: var(--bg-white);
    line-height: 1.5;
    padding-top: var(--header-h);
    overflow-x: hidden;
}

.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

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

/* ========================================
   HEADER
   ======================================== */

.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-h);
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(12px);
    z-index: 1000;
    transition: var(--transition);
    border-bottom: 1px solid var(--border);
}

.header.scrolled {
    height: 70px;
    background: var(--bg-white);
    box-shadow: var(--shadow-lg);
}

.header-inner {
    height: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    flex-shrink: 0;
}

.logo img {
    height: 45px;
    width: auto;
    transition: var(--transition);
    border-radius: var(--radius-sm);
}

.header.scrolled .logo img {
    height: 38px;
}

.logo span {
    font-weight: 800;
    font-size: 1.2rem;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    letter-spacing: -0.3px;
}

/* Menu Toggle (Burger) */
.menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 6px;
    width: 44px;
    height: 44px;
    border: none;
    background: transparent;
    cursor: pointer;
    position: relative;
    z-index: 1001;
    border-radius: var(--radius-sm);
    transition: var(--transition-fast);
}

.menu-toggle:hover {
    background: var(--bg-light);
}

.menu-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--dark);
    transition: var(--transition-fast);
    border-radius: 2px;
}

.menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

.menu-toggle.active span:nth-child(2) {
    opacity: 0;
    transform: translateX(-10px);
}

.menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

/* Navigation Desktop */
.nav {
    display: flex;
    align-items: center;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 4px;
}

.nav-links a {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    text-decoration: none;
    color: var(--text);
    border-radius: var(--radius);
    font-weight: 500;
    transition: var(--transition-fast);
    font-size: 0.9rem;
    white-space: nowrap;
}

.nav-links a i {
    font-size: 1rem;
    color: var(--text-light);
    transition: var(--transition-fast);
}

.nav-links a:hover {
    background: var(--primary-soft);
    color: var(--primary-dark);
    transform: translateY(-1px);
}

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

.nav-links a.active {
    color: var(--primary);
    background: var(--primary-soft);
}

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

/* Bouton CTA */
.btn-demo {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white !important;
    border-radius: 999px !important;
    padding: 8px 20px !important;
    margin-left: 8px;
    box-shadow: 0 2px 8px rgba(245, 158, 11, 0.3);
}

.btn-demo i {
    color: white !important;
}

.btn-demo:hover {
    transform: translateY(-2px) !important;
    box-shadow: 0 4px 12px rgba(245, 158, 11, 0.4);
}

/* Overlay */
.nav-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
    z-index: 998;
}

.nav-overlay.active {
    opacity: 1;
    visibility: visible;
}

/* ========================================
   MAIN CONTENT
   ======================================== */

.main-content {
    min-height: calc(100vh - var(--header-h) - 400px);
}

/* ========================================
   FOOTER
   ======================================== */

.footer {
    background: var(--dark);
    color: var(--bg-white);
    margin-top: 80px;
    position: relative;
}

.footer-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 60px 24px 40px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 40px;
}

.footer-col h3,
.footer-col h4 {
    margin-bottom: 20px;
    font-size: 1.2rem;
    position: relative;
    display: inline-block;
}

.footer-col h3::after,
.footer-col h4::after {
    content: "";
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 50px;
    height: 3px;
    background: var(--primary);
    border-radius: 2px;
}

.footer-col p {
    color: #cbd5e1;
    line-height: 1.6;
    margin-bottom: 12px;
}

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

.footer-col ul li {
    margin-bottom: 12px;
}

.footer-col a {
    color: #cbd5e1;
    text-decoration: none;
    transition: var(--transition-fast);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.footer-col a:hover {
    color: var(--primary);
    transform: translateX(5px);
}

.social-links {
    display: flex;
    gap: 12px;
    margin-top: 20px;
}

.social-links a {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.08);
    transition: var(--transition-fast);
}

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

.footer-bottom {
    text-align: center;
    padding: 24px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* ========================================
   MOBILE RESPONSIVE
   ======================================== */

@media (max-width: 1024px) {
    .nav-links a span {
        display: none;
    }
    
    .nav-links a i {
        font-size: 1.2rem;
    }
    
    .btn-demo span {
        display: inline !important;
    }
    
    .btn-demo i {
        display: inline !important;
    }
}

@media (max-width: 768px) {
    body {
        padding-top: var(--header-h-mobile);
    }
    
    .header {
        height: var(--header-h-mobile);
    }
    
    .header.scrolled {
        height: 60px;
    }
    
    .container {
        padding: 0 16px;
    }
    
    /* Menu Burger */
    .menu-toggle {
        display: flex;
    }
    
    /* Navigation Mobile */
    .nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 85%;
        max-width: 360px;
        height: 100vh;
        background: var(--bg-white);
        box-shadow: var(--shadow-xl);
        flex-direction: column;
        justify-content: flex-start;
        align-items: stretch;
        padding: 90px 20px 30px;
        transition: right 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        z-index: 999;
        overflow-y: auto;
    }
    
    .nav.active {
        right: 0;
    }
    
    .nav-links {
        flex-direction: column;
        gap: 8px;
        width: 100%;
    }
    
    .nav-links a {
        width: 100%;
        justify-content: center;
        padding: 14px 16px;
        background: var(--bg-light);
        border-radius: var(--radius);
        font-size: 1rem;
        white-space: normal;
    }
    
    .nav-links a span {
        display: inline;
    }
    
    .nav-links a i {
        font-size: 1.1rem;
    }
    
    .nav-links a:hover {
        transform: translateX(5px);
    }
    
    .btn-demo {
        margin-left: 0;
        margin-top: 8px;
        background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    }
    
    /* Logo mobile */
    .logo img {
        height: 35px;
    }
    
    .logo span {
        font-size: 0.9rem;
    }
    
    /* Footer mobile */
    .footer-container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-col h3::after,
    .footer-col h4::after {
        left: 50%;
        transform: translateX(-50%);
    }
    
    .social-links {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .nav {
        width: 100%;
        max-width: none;
    }
    
    .container {
        padding: 0 12px;
    }
}

/* ========================================
   ANIMATIONS
   ======================================== */

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes slideInRight {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* ========================================
   UTILITIES
   ======================================== */

.text-primary { color: var(--primary); }
.text-dark { color: var(--dark); }
.text-muted { color: var(--text-muted); }

.bg-light { background: var(--bg-light); }
.bg-primary { background: var(--primary); }

.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 12px 24px;
    border-radius: 999px;
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
    cursor: pointer;
    border: none;
    font-size: 1rem;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    box-shadow: var(--shadow-md);
}

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

.btn-outline {
    background: transparent;
    color: var(--primary-dark);
    border: 2px solid var(--primary);
}

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

.gradient-text {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

/* Scrollbar personnalisée */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--primary);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-dark);
}