/*
Theme Name: Chanel Services
Theme URI: https://www.chanelservices.fr
Author: Chanel Services
Author URI: https://www.chanelservices.fr
Description: Theme professionnel pour Chanel Services - Software & AI Development
Version: 1.0.0
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: chanelservices
Tags: dark, modern, tech, one-page, custom-logo
*/

/* ============================================
   VARIABLES & RESET
   ============================================ */
:root {
    --cs-dark:        #0d0d1a;
    --cs-dark-alt:    #141428;
    --cs-dark-card:   #1a1a35;
    --cs-dark-border: #2a2a4a;
    --cs-cyan:        #55D8F0;
    --cs-cyan-light:  #7DE4F8;
    --cs-purple:      #8F5EF6;
    --cs-purple-deep: #7237E0;
    --cs-gradient:    linear-gradient(135deg, var(--cs-cyan), var(--cs-purple));
    --cs-gradient-h:  linear-gradient(90deg, var(--cs-cyan), var(--cs-purple));
    --cs-white:       #f0f0f5;
    --cs-gray:        #a0a0b8;
    --cs-gray-light:  #c8c8d8;
    --cs-font:        'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --cs-font-mono:   'JetBrains Mono', 'Fira Code', monospace;
    --cs-radius:      12px;
    --cs-radius-lg:   20px;
    --cs-shadow:      0 4px 30px rgba(0, 0, 0, 0.4);
    --cs-shadow-glow: 0 0 40px rgba(85, 216, 240, 0.15);
    --cs-transition:  all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

body {
    font-family: var(--cs-font);
    background-color: var(--cs-dark);
    color: var(--cs-white);
    line-height: 1.7;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    color: var(--cs-cyan);
    text-decoration: none;
    transition: var(--cs-transition);
}

a:hover {
    color: var(--cs-cyan-light);
}

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

ul, ol {
    list-style: none;
}

/* ============================================
   TYPOGRAPHY
   ============================================ */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    color: var(--cs-white);
}

h1 { font-size: clamp(2.5rem, 5vw, 4rem); }
h2 { font-size: clamp(2rem, 4vw, 3rem); }
h3 { font-size: clamp(1.3rem, 2.5vw, 1.6rem); }

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

/* ============================================
   LAYOUT
   ============================================ */
.cs-container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.cs-section {
    padding: 100px 0;
    position: relative;
}

.cs-section-header {
    text-align: center;
    margin-bottom: 64px;
}

.cs-section-header h2 {
    margin-bottom: 16px;
}

.cs-section-header p {
    color: var(--cs-gray);
    font-size: 1.15rem;
    max-width: 600px;
    margin: 0 auto;
}

.cs-label {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 2px;
    text-transform: uppercase;
    background: var(--cs-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 12px;
}

/* ============================================
   BUTTONS
   ============================================ */
.cs-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    font-size: 1rem;
    font-weight: 600;
    font-family: var(--cs-font);
    border: none;
    border-radius: 50px;
    cursor: pointer;
    transition: var(--cs-transition);
    text-decoration: none;
}

.cs-btn-primary {
    background: var(--cs-gradient);
    color: var(--cs-dark);
    box-shadow: 0 4px 20px rgba(85, 216, 240, 0.3);
}

.cs-btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(85, 216, 240, 0.5);
    color: var(--cs-dark);
}

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

.cs-btn-outline:hover {
    border-color: var(--cs-cyan);
    color: var(--cs-cyan);
    transform: translateY(-2px);
}

/* ============================================
   NAVIGATION
   ============================================ */
.cs-navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 16px 0;
    transition: var(--cs-transition);
    background: transparent;
}

.cs-navbar.scrolled {
    background: rgba(13, 13, 26, 0.92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--cs-dark-border);
    padding: 10px 0;
}

.cs-navbar .cs-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.cs-logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.cs-logo img {
    height: 42px;
    width: auto;
}

.cs-logo-text {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--cs-white);
}

.cs-logo-text span {
    color: var(--cs-cyan);
}

.cs-nav-links {
    display: flex;
    align-items: center;
    gap: 36px;
}

.cs-nav-links a {
    color: var(--cs-gray-light);
    font-size: 0.95rem;
    font-weight: 500;
    position: relative;
}

.cs-nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--cs-gradient-h);
    transition: var(--cs-transition);
}

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

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

.cs-nav-cta {
    padding: 10px 24px !important;
    font-size: 0.9rem !important;
}

/* Mobile menu toggle */
.cs-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.cs-menu-toggle span {
    display: block;
    width: 26px;
    height: 2px;
    background: var(--cs-white);
    transition: var(--cs-transition);
    border-radius: 2px;
}

/* ============================================
   HERO SECTION
   ============================================ */
.cs-hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    padding-top: 80px;
}

.cs-hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(85, 216, 240, 0.08) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.cs-hero::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(143, 94, 246, 0.06) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.cs-hero-content {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.cs-hero-text h1 {
    margin-bottom: 24px;
}

.cs-hero-text p {
    font-size: 1.2rem;
    color: var(--cs-gray);
    margin-bottom: 40px;
    max-width: 520px;
}

.cs-hero-buttons {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.cs-hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.cs-hero-logo-wrapper {
    position: relative;
    width: 380px;
    height: 380px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.cs-hero-logo-wrapper::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 50%;
    background: var(--cs-gradient);
    opacity: 0.1;
    filter: blur(40px);
    animation: cs-pulse 4s ease-in-out infinite;
}

.cs-hero-logo-wrapper img {
    width: 260px;
    height: auto;
    position: relative;
    z-index: 2;
    filter: drop-shadow(0 0 30px rgba(85, 216, 240, 0.2));
}

@keyframes cs-pulse {
    0%, 100% { opacity: 0.1; transform: scale(1); }
    50% { opacity: 0.2; transform: scale(1.05); }
}

/* Floating particles */
.cs-hero-particles {
    position: absolute;
    inset: 0;
    pointer-events: none;
    overflow: hidden;
}

.cs-particle {
    position: absolute;
    width: 4px;
    height: 4px;
    border-radius: 50%;
    background: var(--cs-cyan);
    opacity: 0.3;
    animation: cs-float linear infinite;
}

.cs-particle:nth-child(1) { left: 10%; animation-duration: 20s; animation-delay: 0s; }
.cs-particle:nth-child(2) { left: 25%; animation-duration: 25s; animation-delay: 2s; background: var(--cs-purple); }
.cs-particle:nth-child(3) { left: 40%; animation-duration: 18s; animation-delay: 4s; }
.cs-particle:nth-child(4) { left: 60%; animation-duration: 22s; animation-delay: 1s; background: var(--cs-purple); }
.cs-particle:nth-child(5) { left: 75%; animation-duration: 28s; animation-delay: 3s; }
.cs-particle:nth-child(6) { left: 90%; animation-duration: 20s; animation-delay: 5s; background: var(--cs-purple); }

@keyframes cs-float {
    0% { transform: translateY(100vh) scale(0); opacity: 0; }
    10% { opacity: 0.3; }
    90% { opacity: 0.3; }
    100% { transform: translateY(-100vh) scale(1); opacity: 0; }
}

/* ============================================
   SERVICES SECTION
   ============================================ */
.cs-services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 28px;
}

.cs-service-card {
    background: var(--cs-dark-card);
    border: 1px solid var(--cs-dark-border);
    border-radius: var(--cs-radius-lg);
    padding: 40px 32px;
    transition: var(--cs-transition);
    position: relative;
    overflow: hidden;
}

.cs-service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--cs-gradient-h);
    opacity: 0;
    transition: var(--cs-transition);
}

.cs-service-card:hover {
    transform: translateY(-4px);
    border-color: rgba(85, 216, 240, 0.3);
    box-shadow: var(--cs-shadow-glow);
}

.cs-service-card:hover::before {
    opacity: 1;
}

.cs-service-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--cs-radius);
    background: linear-gradient(135deg, rgba(85, 216, 240, 0.1), rgba(143, 94, 246, 0.1));
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
    font-size: 1.6rem;
}

.cs-service-card h3 {
    margin-bottom: 12px;
}

.cs-service-card p {
    color: var(--cs-gray);
    font-size: 0.95rem;
    line-height: 1.7;
}

/* ============================================
   ABOUT SECTION
   ============================================ */
.cs-about-bg {
    background: var(--cs-dark-alt);
}

.cs-about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.cs-about-text p {
    color: var(--cs-gray);
    margin-bottom: 20px;
    font-size: 1.05rem;
}

.cs-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 28px;
    margin-top: 40px;
}

.cs-stat {
    text-align: center;
    padding: 28px 16px;
    background: var(--cs-dark-card);
    border: 1px solid var(--cs-dark-border);
    border-radius: var(--cs-radius);
    transition: var(--cs-transition);
}

.cs-stat:hover {
    border-color: rgba(85, 216, 240, 0.3);
    box-shadow: var(--cs-shadow-glow);
}

.cs-stat-number {
    font-size: 2.2rem;
    font-weight: 800;
    background: var(--cs-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
    margin-bottom: 8px;
}

.cs-stat-label {
    color: var(--cs-gray);
    font-size: 0.85rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* ============================================
   TECHNOLOGIES SECTION
   ============================================ */
.cs-tech-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 20px;
}

.cs-tech-badge {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 14px 24px;
    background: var(--cs-dark-card);
    border: 1px solid var(--cs-dark-border);
    border-radius: 50px;
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--cs-gray-light);
    transition: var(--cs-transition);
}

.cs-tech-badge:hover {
    border-color: var(--cs-cyan);
    color: var(--cs-white);
    transform: translateY(-2px);
    box-shadow: var(--cs-shadow-glow);
}

.cs-tech-badge svg {
    width: 20px;
    height: 20px;
}

/* ============================================
   PROCESS / WORKFLOW SECTION
   ============================================ */
.cs-process-bg {
    background: var(--cs-dark-alt);
}

.cs-process-steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
    position: relative;
}

.cs-process-steps::before {
    content: '';
    position: absolute;
    top: 40px;
    left: 10%;
    right: 10%;
    height: 2px;
    background: var(--cs-gradient-h);
    opacity: 0.3;
}

.cs-step {
    text-align: center;
    position: relative;
}

.cs-step-number {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: var(--cs-dark-card);
    border: 2px solid var(--cs-dark-border);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 1.5rem;
    font-weight: 800;
    background: var(--cs-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
    z-index: 2;
}

.cs-step-number::before {
    content: '';
    position: absolute;
    inset: -2px;
    border-radius: 50%;
    background: var(--cs-dark-card);
    border: 2px solid var(--cs-dark-border);
    z-index: -1;
}

.cs-step h3 {
    font-size: 1.1rem;
    margin-bottom: 8px;
}

.cs-step p {
    color: var(--cs-gray);
    font-size: 0.9rem;
}

/* ============================================
   CONTACT SECTION
   ============================================ */
.cs-contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 60px;
}

.cs-contact-info h3 {
    font-size: 1.8rem;
    margin-bottom: 20px;
}

.cs-contact-info p {
    color: var(--cs-gray);
    margin-bottom: 32px;
    font-size: 1.05rem;
}

.cs-contact-details {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.cs-contact-item {
    display: flex;
    align-items: center;
    gap: 16px;
}

.cs-contact-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--cs-radius);
    background: linear-gradient(135deg, rgba(85, 216, 240, 0.1), rgba(143, 94, 246, 0.1));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    flex-shrink: 0;
}

.cs-contact-item-text {
    display: flex;
    flex-direction: column;
}

.cs-contact-item-label {
    font-size: 0.8rem;
    color: var(--cs-gray);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.cs-contact-item-value {
    color: var(--cs-white);
    font-weight: 500;
}

/* Contact form */
.cs-contact-form {
    background: var(--cs-dark-card);
    border: 1px solid var(--cs-dark-border);
    border-radius: var(--cs-radius-lg);
    padding: 40px;
}

.cs-form-group {
    margin-bottom: 20px;
}

.cs-form-group label {
    display: block;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--cs-gray-light);
    margin-bottom: 8px;
}

.cs-form-group input,
.cs-form-group textarea,
.cs-form-group select {
    width: 100%;
    padding: 14px 18px;
    background: var(--cs-dark);
    border: 1px solid var(--cs-dark-border);
    border-radius: var(--cs-radius);
    color: var(--cs-white);
    font-family: var(--cs-font);
    font-size: 1rem;
    transition: var(--cs-transition);
}

.cs-form-group input:focus,
.cs-form-group textarea:focus,
.cs-form-group select:focus {
    outline: none;
    border-color: var(--cs-cyan);
    box-shadow: 0 0 0 3px rgba(85, 216, 240, 0.1);
}

.cs-form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.cs-form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

/* ============================================
   FOOTER
   ============================================ */
.cs-footer {
    background: var(--cs-dark-alt);
    border-top: 1px solid var(--cs-dark-border);
    padding: 60px 0 30px;
}

.cs-footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 40px;
}

.cs-footer-brand p {
    color: var(--cs-gray);
    margin-top: 16px;
    max-width: 360px;
    font-size: 0.95rem;
}

.cs-footer-title {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--cs-white);
}

.cs-footer-links li {
    margin-bottom: 10px;
}

.cs-footer-links a {
    color: var(--cs-gray);
    font-size: 0.95rem;
}

.cs-footer-links a:hover {
    color: var(--cs-cyan);
}

.cs-footer-bottom {
    border-top: 1px solid var(--cs-dark-border);
    padding-top: 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.cs-footer-bottom p {
    color: var(--cs-gray);
    font-size: 0.85rem;
}

.cs-social-links {
    display: flex;
    gap: 12px;
}

.cs-social-links a {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--cs-dark-card);
    border: 1px solid var(--cs-dark-border);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--cs-gray);
    transition: var(--cs-transition);
}

.cs-social-links a:hover {
    border-color: var(--cs-cyan);
    color: var(--cs-cyan);
    transform: translateY(-2px);
}

/* ============================================
   SCROLL ANIMATIONS
   ============================================ */
.cs-reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.cs-reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 1024px) {
    .cs-hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    .cs-hero-text p {
        margin: 0 auto 40px;
    }
    .cs-hero-buttons {
        justify-content: center;
    }
    .cs-hero-visual {
        display: none;
    }
    .cs-about-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    .cs-process-steps {
        grid-template-columns: repeat(2, 1fr);
    }
    .cs-process-steps::before {
        display: none;
    }
    .cs-contact-wrapper {
        grid-template-columns: 1fr;
    }
    .cs-footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 40px;
    }
}

@media (max-width: 768px) {
    .cs-section {
        padding: 70px 0;
    }
    .cs-nav-links {
        display: none;
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(13, 13, 26, 0.98);
        flex-direction: column;
        justify-content: center;
        gap: 24px;
        padding: 40px;
    }
    .cs-nav-links.open {
        display: flex;
    }
    .cs-nav-links a {
        font-size: 1.3rem;
    }
    .cs-menu-toggle {
        display: flex;
    }
    .cs-services-grid {
        grid-template-columns: 1fr;
    }
    .cs-process-steps {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    .cs-stats {
        grid-template-columns: 1fr 1fr;
    }
    .cs-form-row {
        grid-template-columns: 1fr;
    }
    .cs-footer-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    .cs-footer-bottom {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .cs-container {
        padding: 0 16px;
    }
    .cs-hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    .cs-btn {
        width: 100%;
        justify-content: center;
    }
    .cs-stats {
        grid-template-columns: 1fr;
    }
}