/* ===== VARIABLES ===== */
:root {
    --color-primary: #2563eb;
    --color-secondary: #1e40af;
    --color-accent: #3b82f6;
    --color-bg: #ffffff;
    --color-text: #1f2937;
    --color-surface: #f9fafb;
    --color-navbar-bg: #ffffff;
    --color-navbar-text: #1f2937;
    --color-title: #111827;
    --color-card-bg: #ffffff;
    --color-card-border: #e5e7eb;
    --card-shadow: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.04);
    --color-footer-bg: #111827;
    --color-footer-text: #9ca3af;
    --radius-global: .75rem;
    --gray-50:#f9fafb;--gray-100:#f3f4f6;--gray-200:#e5e7eb;--gray-300:#d1d5db;
    --gray-400:#9ca3af;--gray-500:#6b7280;--gray-600:#4b5563;--gray-700:#374151;
    --gray-800:#1f2937;--gray-900:#111827;
    --shadow: 0 1px 3px rgba(0,0,0,.1);
    --shadow-md: 0 4px 6px rgba(0,0,0,.07);
    --shadow-lg: 0 10px 15px rgba(0,0,0,.1);
    --shadow-xl: 0 20px 25px rgba(0,0,0,.1);
    --radius: .5rem;
    --radius-lg: var(--radius-global);
    --radius-xl: calc(var(--radius-global) + .25rem);
}

/* ===== RESET ===== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-font-smoothing:antialiased}
body{font-family:'Inter',system-ui,sans-serif;color:var(--color-text);background:var(--color-bg);line-height:1.6}
a{color:var(--color-primary);text-decoration:none;transition:.2s}
a:hover{color:var(--color-secondary)}
img{max-width:100%;height:auto}
ul{list-style:none}

/* ===== LAYOUT ===== */
.container{max-width:1200px;margin:0 auto;padding:0 1.5rem}
.section{padding:5rem 0}
.section-title{font-size:2.25rem;font-weight:700;text-align:center;margin-bottom:1rem;color:var(--color-title)}
.section-subtitle{text-align:center;color:var(--gray-500);font-size:1.125rem;max-width:600px;margin:0 auto 3rem}

/* ===== BUTTONS ===== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;padding:.75rem 1.5rem;border-radius:var(--radius);font-weight:500;font-size:.938rem;cursor:pointer;border:none;transition:.2s;text-decoration:none;font-family:inherit}
.btn:hover{transform:translateY(-1px);box-shadow:var(--shadow-md)}
.btn-primary{background:var(--color-primary);color:#fff}
.btn-primary:hover{background:var(--color-secondary);color:#fff}
.btn-outline{background:transparent;color:var(--color-primary);border:2px solid var(--color-primary)}
.btn-outline:hover{background:var(--color-primary);color:#fff}
.btn-secondary{background:var(--gray-100);color:var(--gray-700);border:1px solid var(--gray-200)}
.btn-danger{background:#ef4444;color:#fff}
.btn-danger:hover{background:#dc2626;color:#fff}
.btn-sm{padding:.5rem 1rem;font-size:.813rem}
.btn-lg{padding:1rem 2rem;font-size:1.125rem}
.btn:disabled{opacity:.5;cursor:not-allowed;transform:none}

/* ===== FORMS ===== */
.form-group{margin-bottom:1.25rem}
.form-label{display:block;font-weight:500;margin-bottom:.5rem;font-size:.875rem;color:var(--gray-700)}
.form-input,.form-textarea,.form-select{width:100%;padding:.75rem 1rem;border:1px solid var(--gray-300);border-radius:var(--radius);font-size:.938rem;font-family:inherit;transition:.2s;background:#fff;color:var(--color-text)}
.form-input:focus,.form-textarea:focus,.form-select:focus{outline:none;border-color:var(--color-primary);box-shadow:0 0 0 3px rgba(37,99,235,.1)}
.form-textarea{min-height:120px;resize:vertical}
.form-checkbox{display:flex;align-items:center;gap:.5rem}
.form-checkbox input{width:18px;height:18px;accent-color:var(--color-primary)}

/* ===== BADGES ===== */
.badge{display:inline-flex;padding:.25rem .75rem;border-radius:9999px;font-size:.75rem;font-weight:500}
.badge-primary{background:rgba(37,99,235,.1);color:var(--color-primary)}
.badge-success{background:rgba(34,197,94,.1);color:#16a34a}
.badge-warning{background:rgba(234,179,8,.1);color:#ca8a04}
.badge-danger{background:rgba(239,68,68,.1);color:#dc2626}

/* ===== ALERTS ===== */
.alert{padding:.75rem 1rem;border-radius:var(--radius);margin-bottom:1rem;font-size:.875rem}
.alert-success{background:rgba(34,197,94,.1);color:#16a34a;border:1px solid rgba(34,197,94,.2)}
.alert-error{background:rgba(239,68,68,.1);color:#dc2626;border:1px solid rgba(239,68,68,.2)}

/* ===== NAVBAR ===== */
.navbar{position:fixed;top:0;left:0;right:0;z-index:100;background:var(--color-navbar-bg);backdrop-filter:blur(10px);border-bottom:1px solid var(--color-card-border);transition:.2s}
.navbar.scrolled{box-shadow:var(--shadow-md)}
.navbar-inner{display:flex;align-items:center;justify-content:space-between;padding:1rem 1.5rem;max-width:1200px;margin:0 auto}
.navbar-logo{font-size:1.25rem;font-weight:700;color:var(--color-navbar-text)}
.navbar-logo:hover{color:var(--color-primary)}
.navbar-links{display:flex;align-items:center;gap:2rem}
.navbar-links a{color:var(--color-navbar-text);opacity:.7;font-weight:500;font-size:.938rem;position:relative}
.navbar-links a:hover,.navbar-links a.active{color:var(--color-primary);opacity:1}
.navbar-links a::after{content:'';position:absolute;bottom:-4px;left:0;width:0;height:2px;background:var(--color-primary);transition:.3s}
.navbar-links a:hover::after,.navbar-links a.active::after{width:100%}
.mobile-toggle{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:.5rem}
.mobile-toggle span{display:block;width:24px;height:2px;background:var(--color-navbar-text);transition:.3s}
@media(max-width:768px){
    .mobile-toggle{display:flex}
    .navbar-links{
        display:none;  /* <-- AJOUT */
        position:fixed;
        top:64px;
        left:0;
        right:0;
        background:var(--color-navbar-bg);
        flex-direction:column;
        padding:1.5rem;
        gap:1rem;
        box-shadow:var(--shadow-lg);
        z-index:99;
    }
    .navbar-links.open{
        display:flex;  /* <-- AJOUT */
    }
}


/* ===== HERO ===== */
.hero{min-height:100vh;display:flex;align-items:center;justify-content:center;text-align:center;padding:6rem 1.5rem;background:linear-gradient(135deg,var(--color-surface),#fff,var(--color-surface));position:relative;overflow:hidden}
.hero::before{content:'';position:absolute;top:-50%;right:-20%;width:600px;height:600px;background:radial-gradient(circle,rgba(37,99,235,.05),transparent 70%);border-radius:50%}
.hero-content{position:relative;z-index:1;max-width:800px}
.hero h1{font-size:3.5rem;font-weight:800;line-height:1.1;margin-bottom:1.5rem;color:var(--color-title)}
.hero h1 span{background:linear-gradient(135deg,var(--color-primary),var(--color-accent));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero p{font-size:1.25rem;color:var(--gray-500);margin-bottom:2.5rem;line-height:1.7}
.hero-buttons{display:flex;gap:1rem;justify-content:center;flex-wrap:wrap}
@media(max-width:768px){.hero h1{font-size:2.25rem}.hero p{font-size:1rem}}

/* ===== PROJECTS GRID ===== */
.projects-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(340px,1fr));gap:2rem}
@media(max-width:400px){.projects-grid{grid-template-columns:1fr}}
.project-card{background:var(--color-card-bg);border-radius:var(--radius-xl);overflow:hidden;box-shadow:var(--card-shadow);transition:.3s;border:1px solid var(--color-card-border)}
.project-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-4px)}
.project-card-image{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--gray-100)}
.project-card-image img{width:100%;height:100%;object-fit:cover;transition:.4s}
.project-card:hover .project-card-image img{transform:scale(1.05)}
.project-card-badge{position:absolute;top:.75rem;right:.75rem;display:flex;gap:.5rem}
.project-card-body{padding:1.5rem}
.project-card-title{font-size:1.25rem;font-weight:600;margin-bottom:.5rem;color:var(--color-title)}
.project-card-title a{color:inherit}
.project-card-title a:hover{color:var(--color-primary)}
.project-card-desc{color:var(--gray-500);font-size:.938rem;margin-bottom:1rem;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.project-card-techs{display:flex;flex-wrap:wrap;gap:.5rem;margin-bottom:1rem}
.tech-tag{padding:.25rem .625rem;background:var(--gray-100);border-radius:4px;font-size:.75rem;font-weight:500;color:var(--gray-600)}
.project-card-footer{display:flex;align-items:center;justify-content:space-between;padding:1rem 1.5rem;border-top:1px solid var(--color-card-border)}
.project-price{font-weight:700;font-size:1.125rem;color:var(--color-primary)}
.project-price.free{color:#16a34a}

/* ===== FILTER BAR ===== */
.filter-bar{display:flex;flex-wrap:wrap;gap:.75rem;justify-content:center;margin-bottom:3rem}
.filter-btn{padding:.5rem 1.25rem;border-radius:9999px;border:1px solid var(--gray-200);background:#fff;color:var(--gray-600);font-size:.875rem;font-weight:500;cursor:pointer;transition:.2s;font-family:inherit;text-decoration:none}
.filter-btn:hover,.filter-btn.active{background:var(--color-primary);color:#fff;border-color:var(--color-primary)}

/* ===== ABOUT ===== */
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:4rem;align-items:center}
.about-image{width:100%;aspect-ratio:1;object-fit:cover;border-radius:var(--radius-xl);box-shadow:var(--shadow-lg)}
.about-placeholder{width:100%;aspect-ratio:1;background:linear-gradient(135deg,var(--gray-100),var(--gray-200));border-radius:var(--radius-xl);display:flex;align-items:center;justify-content:center;font-size:5rem}
.about-text h2{font-size:2rem;font-weight:700;margin-bottom:1rem;color:var(--color-title)}
.about-text p{color:var(--gray-600);line-height:1.8;margin-bottom:2rem}
.skills-grid{display:flex;flex-wrap:wrap;gap:.75rem}
.skill-tag{padding:.5rem 1rem;background:rgba(37,99,235,.08);color:var(--color-primary);border-radius:var(--radius);font-size:.875rem;font-weight:500}
@media(max-width:768px){.about-grid{grid-template-columns:1fr;gap:2rem}}

/* ===== CONTACT ===== */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:3rem}
.contact-info{display:flex;flex-direction:column;gap:1.5rem}
.contact-item{display:flex;align-items:center;gap:1rem;color:var(--gray-600)}
.contact-icon{width:48px;height:48px;border-radius:var(--radius);background:rgba(37,99,235,.08);display:flex;align-items:center;justify-content:center;color:var(--color-primary);flex-shrink:0}
@media(max-width:768px){.contact-grid{grid-template-columns:1fr}}

/* ===== PROJECT HERO BANNER ===== */
.project-hero{position:relative;padding:8rem 0 3rem;overflow:hidden;background:var(--color-surface)}
.project-hero-bg{position:absolute;inset:0;z-index:0}
.project-hero-bg img{width:100%;height:100%;object-fit:cover;filter:blur(30px) brightness(.7);opacity:.3}
.project-hero-content{position:relative;z-index:1;max-width:700px}
.project-back{display:inline-flex;align-items:center;gap:.5rem;color:var(--gray-500);font-size:.875rem;margin-bottom:1.5rem;transition:.2s}
.project-back:hover{color:var(--color-primary)}
.project-hero h1{font-size:2.75rem;font-weight:800;color:var(--color-title);margin-bottom:1rem;line-height:1.15}
.project-hero-desc{color:var(--gray-500);font-size:1.125rem;line-height:1.7;margin-bottom:1.5rem}
.project-hero-tags{display:flex;flex-wrap:wrap;gap:.5rem}
@media(max-width:768px){.project-hero h1{font-size:1.75rem}.project-hero{padding:6rem 0 2rem}}

/* ===== PROJECT LAYOUT ===== */
.project-layout{display:grid;grid-template-columns:1fr 340px;gap:3rem;align-items:start}
.project-main{}
.project-sidebar{position:sticky;top:90px;align-self:start}
@media(max-width:900px){.project-layout{grid-template-columns:1fr}.project-sidebar{position:static}}

/* Sidebar card */
.sidebar-card{background:var(--color-card-bg);border:1px solid var(--color-card-border);border-radius:var(--radius-xl);padding:2rem;box-shadow:var(--card-shadow)}
.sidebar-card .price-tag{font-size:2.25rem;font-weight:800;color:var(--color-primary);margin-bottom:1.25rem;text-align:center}
.sidebar-card .price-tag.free{color:#16a34a}
.sidebar-links{display:flex;flex-direction:column;gap:.75rem;margin-top:.75rem}
.sidebar-note{color:var(--gray-500);font-size:.875rem;text-align:center;margin-top:.5rem}
.sidebar-meta{margin-top:1.5rem;padding-top:1.25rem;border-top:1px solid var(--color-card-border);display:grid;grid-template-columns:1fr 1fr;gap:.75rem}
.sidebar-meta div{display:flex;flex-direction:column}
.sidebar-meta span{font-size:.75rem;color:var(--gray-400);text-transform:uppercase;letter-spacing:.03em}
.sidebar-meta strong{font-size:.875rem;color:var(--color-title)}
.sidebar-sticky{position:sticky;top:90px}

/* Project sections */
.project-section{margin-bottom:2.5rem}
.project-section h2{font-size:1.375rem;font-weight:700;color:var(--color-title);margin-bottom:1.25rem;padding-bottom:.75rem;border-bottom:2px solid var(--color-card-border)}
.project-description{line-height:1.85;color:var(--gray-600);font-size:1rem;white-space:pre-line}

/* Info bar */
.project-info-bar{display:flex;flex-wrap:wrap;gap:2rem;padding:1.5rem;background:var(--color-card-bg);border:1px solid var(--color-card-border);border-radius:var(--radius-xl);margin-bottom:2.5rem;box-shadow:var(--card-shadow)}
.info-bar-item{display:flex;flex-direction:column;gap:.25rem}
.info-bar-label{font-size:.75rem;color:var(--gray-400);text-transform:uppercase;letter-spacing:.03em;font-weight:600}

/* Gallery grid */
.project-gallery-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:1rem}
.gallery-main{grid-column:1/-1}
.gallery-item img{width:100%;border-radius:var(--radius-lg);cursor:pointer;transition:.3s;border:1px solid var(--color-card-border)}
.gallery-item img:hover{box-shadow:var(--shadow-lg);transform:scale(1.01)}
.gallery-item img.zoomed{position:fixed;inset:2rem;width:auto;height:auto;max-width:calc(100vw - 4rem);max-height:calc(100vh - 4rem);margin:auto;z-index:300;object-fit:contain;border-radius:var(--radius-xl);box-shadow:0 25px 50px rgba(0,0,0,.3);transform:none;cursor:zoom-out}

/* Modules grid */
.modules-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:1rem}
.module-card{display:flex;gap:1rem;align-items:start;padding:1.25rem;background:var(--color-card-bg);border-radius:var(--radius-lg);border:1px solid var(--color-card-border);box-shadow:var(--card-shadow);transition:.2s}
.module-card:hover{box-shadow:var(--shadow-md);transform:translateY(-2px)}
.module-icon{width:40px;height:40px;border-radius:var(--radius);background:rgba(37,99,235,.08);display:flex;align-items:center;justify-content:center;color:var(--color-primary);flex-shrink:0}
.module-card strong{display:block;color:var(--color-title);font-size:.938rem;margin-bottom:.25rem}
.module-card p{color:var(--gray-500);font-size:.813rem;line-height:1.5;margin:0}

/* Requirements & Changelog */
.requirements-box{background:var(--color-surface);border:1px solid var(--color-card-border);border-radius:var(--radius-lg);padding:1.25rem;line-height:1.7;color:var(--gray-600);font-size:.938rem}
.changelog-box{background:var(--color-surface);border:1px solid var(--color-card-border);border-radius:var(--radius-lg);padding:1.25rem;font-family:'SF Mono',Consolas,monospace;font-size:.813rem;line-height:1.8;color:var(--gray-600);white-space:pre-wrap;overflow-x:auto;margin:0}

/* ===== DOWNLOAD PAGE ===== */
.download-page{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:2rem}
.download-card{max-width:500px;width:100%;background:var(--color-card-bg);border-radius:var(--radius-xl);padding:3rem;box-shadow:var(--shadow-lg);text-align:center}
.download-card h1{font-size:1.5rem;margin-bottom:1rem}
.download-card .info{color:var(--gray-500);margin-bottom:2rem}

/* ===== MODAL ===== */
.modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,.5);display:none;align-items:center;justify-content:center;z-index:200;padding:1rem}
.modal-overlay.open{display:flex}
.modal{background:var(--color-card-bg);border-radius:var(--radius-xl);max-width:480px;width:100%;padding:2rem;position:relative}
.modal h2{font-size:1.5rem;font-weight:700;margin-bottom:1.5rem}
.modal-close{position:absolute;top:1rem;right:1rem;background:none;border:none;font-size:1.5rem;cursor:pointer;color:var(--gray-400)}
.payment-methods{display:flex;flex-direction:column;gap:1rem;margin-top:1.5rem}
.payment-btn{display:flex;align-items:center;justify-content:center;gap:.75rem;padding:1rem;border-radius:var(--radius-lg);border:2px solid var(--gray-200);background:#fff;cursor:pointer;font-size:1rem;font-weight:600;transition:.2s;font-family:inherit}
.payment-btn:hover{border-color:var(--color-primary)}
.payment-btn.stripe-btn{color:#635bff}
.payment-btn.paypal-btn{color:#003087}

/* ===== FOOTER ===== */
.site-footer{background:var(--color-footer-bg);color:var(--color-footer-text);padding:3rem 0;text-align:center}
.footer-inner{max-width:1200px;margin:0 auto;padding:0 1.5rem}
.footer-text{font-size:.875rem;margin-bottom:1rem}
.footer-social{display:flex;justify-content:center;gap:1rem}
.footer-social a{color:var(--gray-400);transition:.2s}
.footer-social a:hover{color:#fff}

/* ===== SPINNER ===== */
.spinner{width:40px;height:40px;border:3px solid var(--gray-200);border-top-color:var(--color-primary);border-radius:50%;animation:spin .8s linear infinite;margin:2rem auto}
@keyframes spin{to{transform:rotate(360deg)}}

/* ===== PAGINATION ===== */
.pagination{display:flex;justify-content:center;gap:.5rem;margin-top:3rem}
.pagination a,.pagination span{padding:.5rem 1rem;border-radius:var(--radius);border:1px solid var(--gray-200);color:var(--gray-600);font-size:.875rem;text-decoration:none;transition:.2s}
.pagination a:hover{background:var(--gray-100)}
.pagination .active{background:var(--color-primary);color:#fff;border-color:var(--color-primary)}

/* ===== SEARCH ===== */
.search-bar{display:flex;gap:1rem;max-width:500px;margin:0 auto 2rem}
.search-bar input{flex:1}

/* ===== EMPTY STATE ===== */
.empty-state{text-align:center;padding:4rem 2rem;color:var(--gray-400)}
.empty-state p{font-size:1.125rem}

/* ===== HERO ENHANCED ===== */
.hero-badge{display:inline-block;padding:.5rem 1.25rem;background:rgba(37,99,235,.1);color:var(--color-primary);border-radius:9999px;font-size:.813rem;font-weight:600;margin-bottom:1.5rem;animation:fadeInDown .6s ease}
.hero-content h1{animation:fadeInDown .6s ease .1s both}
.hero-content p{animation:fadeInDown .6s ease .2s both}
.hero-buttons{animation:fadeInDown .6s ease .3s both}
.hero-stats{display:flex;justify-content:center;gap:3rem;margin-top:3rem;animation:fadeInDown .6s ease .4s both}
.hero-stat{text-align:center}
.hero-stat strong{display:block;font-size:1.75rem;font-weight:800;color:var(--color-title)}
.hero-stat span{font-size:.813rem;color:var(--gray-500)}
@media(max-width:768px){.hero-stats{gap:1.5rem}.hero-stat strong{font-size:1.25rem}}

.hero-scroll{position:absolute;bottom:2rem;left:50%;transform:translateX(-50%);animation:bounce 2s infinite}
.hero-scroll a{display:block;width:30px;height:50px;border:2px solid var(--gray-300);border-radius:25px;position:relative}
.hero-scroll a span{display:block;width:6px;height:6px;background:var(--color-primary);border-radius:50%;position:absolute;top:8px;left:50%;transform:translateX(-50%);animation:scrollDot 2s infinite}
@keyframes scrollDot{0%{opacity:1;top:8px}100%{opacity:0;top:30px}}
@keyframes bounce{0%,100%{transform:translateX(-50%) translateY(0)}50%{transform:translateX(-50%) translateY(-8px)}}
@keyframes fadeInDown{from{opacity:0;transform:translateY(-20px)}to{opacity:1;transform:translateY(0)}}

.hero-particles{position:absolute;inset:0;overflow:hidden;pointer-events:none}
.hero-particles .particle{position:absolute;background:var(--color-primary);border-radius:50%;opacity:.08;animation:float linear infinite}
@keyframes float{0%{transform:translateY(100vh) scale(0)}50%{opacity:.12}100%{transform:translateY(-100px) scale(1);opacity:0}}

/* ===== SERVICES ===== */
.services-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:2rem}
.service-card{background:var(--color-card-bg);border-radius:var(--radius-xl);padding:2.5rem 2rem;text-align:center;box-shadow:var(--card-shadow);border:1px solid var(--color-card-border);transition:.3s}
.service-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-4px)}
.service-icon{width:64px;height:64px;border-radius:var(--radius-lg);background:linear-gradient(135deg,rgba(37,99,235,.1),rgba(59,130,246,.1));color:var(--color-primary);display:flex;align-items:center;justify-content:center;margin:0 auto 1.5rem}
.service-card h3{font-size:1.125rem;font-weight:600;margin-bottom:.75rem;color:var(--color-title)}
.service-card p{color:var(--gray-500);font-size:.938rem;line-height:1.6}

/* ===== CONTACT ENHANCED ===== */
.contact-form-card{background:var(--color-card-bg);border-radius:var(--radius-xl);padding:2rem;box-shadow:var(--card-shadow);border:1px solid var(--color-card-border)}
.contact-social-links{display:flex;gap:.75rem;margin-top:1rem}
.contact-social-btn{padding:.5rem 1rem;border-radius:var(--radius);background:var(--gray-100);color:var(--gray-600);font-size:.813rem;font-weight:500;transition:.2s}
.contact-social-btn:hover{background:var(--color-primary);color:#fff}

/* ===== FADE IN ON SCROLL ===== */
.fade-in{opacity:0;transform:translateY(30px);transition:opacity .6s ease,transform .6s ease}
.fade-in.visible{opacity:1;transform:translateY(0)}