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

:root {
    --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --secondary-gradient: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --dark-bg: #0a0e27;
    --card-bg: #1a1f3a;
    --card-hover: #252b4a;
    --text-primary: #ffffff;
    --text-secondary: #a0aec0;
    --accent-color: #667eea;
    --success-color: #48bb78;
    --error-color: #f56565;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background-color: var(--dark-bg);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* ========================================
   HEADER & NAVIGATION
   ======================================== */

header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 14, 39, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(102, 126, 234, 0.1);
    transition: var(--transition);
}

header.scrolled {
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

nav {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 2rem;
    font-weight: 800;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    cursor: pointer;
    transition: var(--transition);
}

.logo:hover {
    transform: scale(1.05);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2.5rem;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    position: relative;
    transition: var(--transition);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-gradient);
    transition: width 0.3s ease;
}

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

.nav-links a:hover::after {
    width: 100%;
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 5px;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    transition: var(--transition);
    border-radius: 2px;
}

/* ========================================
   HERO SECTION
   ======================================== */

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    background: var(--dark-bg);
}

.hero::before {
    content: '';
    position: absolute;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(102, 126, 234, 0.15) 0%, transparent 70%);
    top: -200px;
    right: -200px;
    animation: float 8s ease-in-out infinite;
}

.hero::after {
    content: '';
    position: absolute;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(118, 75, 162, 0.15) 0%, transparent 70%);
    bottom: -150px;
    left: -150px;
    animation: float 10s ease-in-out infinite reverse;
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0px) rotate(0deg);
    }

    50% {
        transform: translateY(-30px) rotate(5deg);
    }
}

.hero-content {
    text-align: center;
    z-index: 1;
    padding: 2rem;
    animation: fadeInUp 1s ease-out;
}

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

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

.hero-content h1 {
    font-size: clamp(3rem, 8vw, 5rem);
    font-weight: 900;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1rem;
    letter-spacing: -2px;
}

.hero-content p {
    font-size: clamp(1.2rem, 3vw, 1.5rem);
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    font-weight: 300;
}

.cta-button {
    display: inline-block;
    padding: 1rem 2.5rem;
    background: var(--primary-gradient);
    color: white;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    transition: var(--transition);
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.3);
    position: relative;
    overflow: hidden;
}

.cta-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.cta-button:hover::before {
    left: 100%;
}

.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(102, 126, 234, 0.4);
}

/* ========================================
   SECTIONS COMMUNES
   ======================================== */

section {
    padding: 6rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.section-title {
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    text-align: center;
    margin-bottom: 1rem;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 800;
}

.section-subtitle {
    text-align: center;
    color: var(--text-secondary);
    font-size: 1.2rem;
    margin-bottom: 4rem;
}

.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ========================================
   SERVICES SECTION
   ======================================== */

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.service-card {
    background: var(--card-bg);
    padding: 2.5rem;
    border-radius: 20px;
    transition: var(--transition);
    border: 1px solid rgba(102, 126, 234, 0.1);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--primary-gradient);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s ease;
}

.service-card:hover::before {
    transform: scaleX(1);
}

.service-card:hover {
    background: var(--card-hover);
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.service-icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
    display: inline-block;
    transition: var(--transition);
}

.service-card:hover .service-icon {
    transform: scale(1.2) rotate(5deg);
}

.service-card h3 {
    font-size: 1.8rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.service-card p {
    color: var(--text-secondary);
    line-height: 1.8;
}

/* ========================================
   TESTIMONIALS SECTION
   ======================================== */

.testimonials {
    background: linear-gradient(180deg, var(--dark-bg) 0%, var(--card-bg) 100%);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.testimonial-card {
    background: var(--card-bg);
    padding: 2.5rem;
    border-radius: 20px;
    border: 1px solid rgba(102, 126, 234, 0.1);
    transition: var(--transition);
    position: relative;
}

.testimonial-card::before {
    content: '"';
    position: absolute;
    top: 20px;
    left: 20px;
    font-size: 5rem;
    color: rgba(102, 126, 234, 0.2);
    font-family: Georgia, serif;
}

.testimonial-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    border-color: rgba(102, 126, 234, 0.3);
}

.testimonial-text {
    color: var(--text-secondary);
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 2rem;
    position: relative;
    z-index: 1;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.author-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--primary-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.2rem;
}

.author-info h4 {
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.author-info a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    transition: var(--transition);
}

.author-info a:hover {
    color: var(--accent-color);
}

/* ========================================
   CONTACT SECTION
   ======================================== */

.contact {
    background: var(--dark-bg);
}

.feedback-message {
    padding: 1.5rem;
    margin: 2rem auto;
    max-width: 600px;
    border-radius: 12px;
    text-align: center;
    font-weight: 500;
    animation: slideDown 0.5s ease;
}

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

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

.feedback-message .success {
    background: rgba(43, 210, 113, 0.1);
    color: #48bb78;
    border: 2px solid #48bb78;
}

.feedback-message .error {
    background: rgba(245, 101, 101, 0.1);
    color: #f5576c;
    border: 2px solid #f5576c;
}

.contact-form {
    max-width: 600px;
    margin: 0 auto;
    animation: fadeInUp 0.8s ease;
}

.form-group {
    margin-bottom: 2rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
    font-weight: 600;
    font-size: 1rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    background: var(--card-bg);
    border: 2px solid rgba(102, 126, 234, 0.2);
    border-radius: 12px;
    color: var(--text-primary);
    font-size: 1rem;
    transition: var(--transition);
    font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.1);
    transform: translateY(-2px);
}

.form-group textarea {
    min-height: 150px;
    resize: vertical;
}

.submit-button {
    width: 100%;
    padding: 1.2rem;
    background: var(--primary-gradient);
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.3);
    position: relative;
    overflow: hidden;
}

.submit-button::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    transform: translate(-50%, -50%);
    transition: width 0.6s ease, height 0.6s ease;
}

.submit-button:hover::before {
    width: 300px;
    height: 300px;
}

.submit-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(102, 126, 234, 0.4);
}

.submit-button:active {
    transform: translateY(-1px);
}

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

footer {
    background: var(--card-bg);
    padding: 3rem 2rem;
    text-align: center;
    border-top: 1px solid rgba(102, 126, 234, 0.1);
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
    margin-bottom: 1.5rem;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition);
    position: relative;
}

.footer-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-gradient);
    transition: width 0.3s ease;
}

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

.footer-links a:hover::after {
    width: 100%;
}



/* ========================================
   RESPONSIVE DESIGN
   ======================================== */

@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 70px;
        right: -100%;
        background: rgba(26, 31, 58, 0.98);
        backdrop-filter: blur(10px);
        flex-direction: column;
        width: 70%;
        height: calc(100vh - 70px);
        padding: 2rem;
        transition: right 0.3s ease;
        border-left: 1px solid rgba(102, 126, 234, 0.2);
    }

    .nav-links.active {
        right: 0;
    }

    .hamburger {
        display: flex;
    }

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

    .hamburger.active span:nth-child(2) {
        opacity: 0;
    }

    .hamburger.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -7px);
    }

    .services-grid,
    .testimonials-grid {
        grid-template-columns: 1fr;
    }

    section {
        padding: 4rem 1.5rem;
    }

    .hero-content h1 {
        font-size: 2.5rem;
    }
}

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

@keyframes pulse {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.7;
    }
}

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

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

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

::-webkit-scrollbar-thumb {
    background: var(--primary-gradient);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, #7c8ff7 0%, #8a5cb8 100%);
}

/* Selection color */
::selection {
    background: rgba(102, 126, 234, 0.3);
    color: var(--text-primary);
}