/* TSAHOO.COM - Main Stylesheet - Fully Responsive */
:root{--bg-primary:#fff;--bg-secondary:#f8fafc;--bg-tertiary:#f1f5f9;--bg-card:#fff;--text-primary:#0f172a;--text-secondary:#475569;--text-tertiary:#64748b;--accent-primary:#0066cc;--accent-secondary:#0052a3;--accent-light:#e6f0fa;--accent-glow:rgba(0,102,204,.15);--border-color:#e2e8f0;--shadow-sm:0 1px 2px rgba(0,0,0,.05);--shadow-md:0 4px 6px -1px rgba(0,0,0,.1);--shadow-lg:0 10px 15px -3px rgba(0,0,0,.1);--shadow-xl:0 20px 25px -5px rgba(0,0,0,.1);--gradient-hero:linear-gradient(135deg,#f8fafc 0%,#e6f0fa 50%,#f8fafc 100%);--gradient-accent:linear-gradient(135deg,#0066cc 0%,#0052a3 100%);--success:#10b981;--error:#ef4444;--nav-height:72px;--nav-height-mobile:64px}
[data-theme="dark"]{--bg-primary:#0a0f1a;--bg-secondary:#0f172a;--bg-tertiary:#1e293b;--bg-card:#151d2e;--text-primary:#f1f5f9;--text-secondary:#94a3b8;--text-tertiary:#64748b;--accent-primary:#3b9eff;--accent-secondary:#60b3ff;--accent-light:rgba(59,158,255,.1);--accent-glow:rgba(59,158,255,.2);--border-color:#1e293b;--shadow-md:0 4px 6px -1px rgba(0,0,0,.4);--shadow-lg:0 10px 15px -3px rgba(0,0,0,.4);--shadow-xl:0 20px 25px -5px rgba(0,0,0,.5);--gradient-hero:linear-gradient(135deg,#0a0f1a 0%,#0f172a 50%,#0a0f1a 100%)}
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:var(--nav-height);font-size:16px}
body{font-family:'Outfit',sans-serif;background:var(--bg-primary);color:var(--text-primary);line-height:1.6;transition:background .3s,color .3s;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img{max-width:100%;height:auto;display:block}
.bg-grid{position:fixed;inset:0;background-image:linear-gradient(var(--border-color) 1px,transparent 1px),linear-gradient(90deg,var(--border-color) 1px,transparent 1px);background-size:60px 60px;opacity:.3;pointer-events:none;z-index:-1}
[data-theme="dark"] .bg-grid{opacity:.1}

/* Navigation - Desktop */
.nav{position:fixed;top:0;left:0;right:0;z-index:1000;background:rgba(255,255,255,.9);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-bottom:1px solid var(--border-color);height:var(--nav-height)}
[data-theme="dark"] .nav{background:rgba(10,15,26,.9)}
.nav-container{max-width:1400px;margin:0 auto;padding:0 2rem;display:flex;justify-content:space-between;align-items:center;height:100%}
.nav-logo{display:flex;align-items:center;gap:.75rem;font-weight:700;font-size:1.25rem}
.nav-logo-icon{width:40px;height:40px;background:var(--gradient-accent);border-radius:10px;display:flex;align-items:center;justify-content:center;color:#fff;font-family:'JetBrains Mono',monospace;font-weight:700;font-size:.875rem;flex-shrink:0}
.nav-links{display:flex;gap:.25rem}
.nav-link{padding:.625rem 1rem;color:var(--text-secondary);font-weight:500;border-radius:8px;transition:all .2s;white-space:nowrap}
.nav-link:hover,.nav-link.active{color:var(--accent-primary);background:var(--accent-light)}
.nav-actions{display:flex;align-items:center;gap:.75rem}
.theme-toggle{width:44px;height:44px;border:none;background:var(--bg-tertiary);border-radius:10px;cursor:pointer;display:flex;align-items:center;justify-content:center;color:var(--text-secondary);transition:all .2s;flex-shrink:0}
.theme-toggle:hover{background:var(--accent-light);color:var(--accent-primary)}
.theme-toggle svg{width:20px;height:20px}
.nav-cta{padding:.625rem 1.25rem;background:var(--gradient-accent);color:#fff;font-weight:600;border-radius:8px;transition:all .2s;white-space:nowrap}
.nav-cta:hover{transform:translateY(-1px);box-shadow:var(--shadow-lg)}
.mobile-menu-btn{display:none;width:44px;height:44px;border:none;background:var(--bg-tertiary);border-radius:10px;cursor:pointer;flex-direction:column;align-items:center;justify-content:center;gap:5px;flex-shrink:0}
.mobile-menu-btn span{width:20px;height:2px;background:var(--text-primary);border-radius:2px;transition:all .3s}
.mobile-nav{display:none;position:fixed;top:var(--nav-height);left:0;right:0;background:var(--bg-card);border-bottom:1px solid var(--border-color);padding:1rem;z-index:999;max-height:calc(100vh - var(--nav-height));overflow-y:auto}
.mobile-nav.active{display:block}
.mobile-nav a{display:block;padding:.875rem 1rem;color:var(--text-primary);font-weight:500;border-radius:8px;margin-bottom:.25rem}
.mobile-nav a:hover,.mobile-nav a.active{background:var(--accent-light);color:var(--accent-primary)}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;padding:.875rem 1.75rem;font-weight:600;border-radius:10px;transition:all .2s;cursor:pointer;border:none;font-family:inherit;font-size:1rem;text-align:center}
.btn-primary{background:var(--gradient-accent);color:#fff;box-shadow:var(--shadow-md)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg)}
.btn-secondary{background:var(--bg-card);color:var(--text-primary);border:1px solid var(--border-color)}
.btn-secondary:hover{border-color:var(--accent-primary);color:var(--accent-primary)}

/* Sections */
section{padding:80px 1.5rem}
.section-container{max-width:1400px;margin:0 auto}
.section-header{text-align:center;margin-bottom:3rem}
.section-label{display:inline-flex;padding:.5rem 1rem;background:var(--accent-light);color:var(--accent-primary);border-radius:50px;font-size:.875rem;font-weight:600;margin-bottom:1rem}
.section-title{font-size:clamp(1.75rem,4vw,3rem);font-weight:800;margin-bottom:1rem;line-height:1.2}
.section-description{font-size:clamp(1rem,2vw,1.125rem);color:var(--text-secondary);max-width:600px;margin:0 auto}

/* Page Header */
.page-header{padding:calc(var(--nav-height) + 40px) 1.5rem 60px;background:var(--gradient-hero);text-align:center;position:relative;overflow:hidden}
.page-header::before{content:'';position:absolute;top:-50%;right:-20%;width:600px;height:600px;background:radial-gradient(circle,var(--accent-glow) 0%,transparent 70%);pointer-events:none}
.page-header-content{max-width:800px;margin:0 auto;position:relative;z-index:1}
.page-header-label{display:inline-flex;padding:.5rem 1rem;background:var(--accent-light);color:var(--accent-primary);border-radius:50px;font-size:.875rem;font-weight:600;margin-bottom:1.5rem}
.page-header h1{font-size:clamp(2rem,5vw,3.5rem);font-weight:800;margin-bottom:1rem;line-height:1.2}
.page-header p{font-size:clamp(1rem,2vw,1.25rem);color:var(--text-secondary)}

/* Forms */
.form-group{display:flex;flex-direction:column;gap:.5rem}
.form-group label{font-weight:600;font-size:.9375rem}
.form-group label .required{color:var(--error)}
.form-group input,.form-group textarea,.form-group select{padding:.875rem 1rem;background:var(--bg-tertiary);border:1px solid var(--border-color);border-radius:10px;font-size:1rem;font-family:inherit;color:var(--text-primary);transition:all .2s;width:100%}
.form-group input:focus,.form-group textarea:focus,.form-group select:focus{outline:none;border-color:var(--accent-primary);box-shadow:0 0 0 3px var(--accent-glow)}
.form-group input::placeholder,.form-group textarea::placeholder{color:var(--text-tertiary)}
.form-group textarea{resize:vertical;min-height:120px}
.form-group select{cursor:pointer;appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23475569' d='M6 8L1 3h10z'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 1rem center}

/* Footer */
.footer{background:var(--bg-secondary);border-top:1px solid var(--border-color);padding:3rem 1.5rem 1.5rem}
.footer-container{max-width:1400px;margin:0 auto}
.footer-top{display:grid;grid-template-columns:2fr repeat(3,1fr);gap:3rem;margin-bottom:2rem}
.footer-brand{min-width:0}
.footer-brand p{color:var(--text-secondary);margin-top:1rem;line-height:1.7;font-size:.9375rem}
.footer-column h4{font-weight:700;margin-bottom:1rem;font-size:1rem}
.footer-links{display:flex;flex-direction:column;gap:.625rem}
.footer-links a{color:var(--text-secondary);transition:color .2s;font-size:.9375rem}
.footer-links a:hover{color:var(--accent-primary)}
.footer-social{display:flex;gap:.625rem;margin-top:1.25rem;flex-wrap:wrap}
.social-link{width:40px;height:40px;background:var(--bg-tertiary);border-radius:10px;display:flex;align-items:center;justify-content:center;color:var(--text-secondary);transition:all .2s}
.social-link:hover{background:var(--accent-primary);color:#fff}
.social-link svg{width:18px;height:18px}
.footer-bottom{padding-top:1.5rem;border-top:1px solid var(--border-color);display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:1rem}
.footer-copyright{color:var(--text-tertiary);font-size:.875rem}
.footer-legal{display:flex;gap:1.5rem;flex-wrap:wrap}
.footer-legal a{color:var(--text-tertiary);font-size:.875rem;transition:color .2s}
.footer-legal a:hover{color:var(--accent-primary)}

/* Scroll Top */
.scroll-top{position:fixed;bottom:1.5rem;right:1.5rem;width:48px;height:48px;background:var(--gradient-accent);color:#fff;border:none;border-radius:12px;cursor:pointer;display:flex;align-items:center;justify-content:center;opacity:0;visibility:hidden;transition:all .3s;z-index:100;box-shadow:var(--shadow-lg)}
.scroll-top.visible{opacity:1;visibility:visible}
.scroll-top:hover{transform:translateY(-3px)}
.scroll-top svg{width:20px;height:20px}

/* Legal Pages */
.legal-content{max-width:900px;margin:0 auto;padding:3rem 1.5rem}
.legal-content h2{font-size:1.375rem;font-weight:700;margin:2rem 0 .875rem;padding-bottom:.5rem;border-bottom:2px solid var(--accent-light)}
.legal-content h3{font-size:1.125rem;font-weight:600;margin:1.5rem 0 .625rem}
.legal-content p{color:var(--text-secondary);margin-bottom:1rem;line-height:1.8}
.legal-content ul,.legal-content ol{color:var(--text-secondary);margin:1rem 0 1rem 1.25rem;line-height:1.8}
.legal-content li{margin-bottom:.5rem}
.legal-content a{color:var(--accent-primary);text-decoration:underline}
.legal-content .highlight-box{background:var(--accent-light);border-left:4px solid var(--accent-primary);padding:1.25rem;margin:1.5rem 0;border-radius:0 10px 10px 0}
.legal-content .last-updated{font-size:.875rem;color:var(--text-tertiary);margin-bottom:1.5rem;padding-bottom:1rem;border-bottom:1px solid var(--border-color)}

/* Animations */
@keyframes fadeInUp{from{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.5}}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}
@keyframes blink{0%,50%{opacity:1}51%,100%{opacity:0}}

/* Utility Classes */
.text-center{text-align:center}
.mt-2{margin-top:1rem}
.mt-4{margin-top:2rem}
.visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

/* ==================== RESPONSIVE BREAKPOINTS ==================== */

/* Large Desktop (1400px+) */
@media(min-width:1400px){
    .nav-container,.section-container,.footer-container{padding-left:3rem;padding-right:3rem}
    section{padding:100px 3rem}
}

/* Desktop (1200px - 1399px) */
@media(max-width:1399px){
    .footer-top{gap:2rem}
}

/* Tablet Landscape / Small Desktop (992px - 1199px) */
@media(max-width:1199px){
    .nav-links{gap:0}
    .nav-link{padding:.5rem .75rem;font-size:.9375rem}
    .footer-top{grid-template-columns:repeat(2,1fr);gap:2rem}
}

/* Tablet Portrait (768px - 991px) */
@media(max-width:991px){
    :root{--nav-height:64px}
    html{scroll-padding-top:var(--nav-height)}
    .nav-container{padding:0 1.25rem}
    .nav-links{display:none}
    .nav-cta{display:none}
    .mobile-menu-btn{display:flex}
    .mobile-nav{top:var(--nav-height)}
    section{padding:60px 1.25rem}
    .page-header{padding:calc(var(--nav-height) + 30px) 1.25rem 50px}
    .section-header{margin-bottom:2.5rem}
    .footer{padding:2.5rem 1.25rem 1.5rem}
    .footer-top{grid-template-columns:1fr 1fr;gap:2rem}
    .legal-content{padding:2rem 1.25rem}
}

/* Mobile Landscape / Large Phone (576px - 767px) */
@media(max-width:767px){
    .nav-container{padding:0 1rem}
    .nav-logo span{font-size:1.125rem}
    section{padding:50px 1rem}
    .page-header{padding:calc(var(--nav-height) + 24px) 1rem 40px}
    .page-header h1{font-size:1.75rem}
    .section-header{margin-bottom:2rem}
    .btn{padding:.75rem 1.5rem;font-size:.9375rem}
    .footer{padding:2rem 1rem 1.25rem}
    .footer-top{grid-template-columns:1fr;gap:1.75rem;text-align:center}
    .footer-brand{text-align:center}
    .footer-social{justify-content:center}
    .footer-links{align-items:center}
    .footer-bottom{flex-direction:column;text-align:center;gap:.75rem}
    .footer-legal{justify-content:center;gap:1rem}
    .legal-content{padding:1.5rem 1rem}
    .legal-content h2{font-size:1.25rem}
    .scroll-top{bottom:1rem;right:1rem;width:44px;height:44px}
}

/* Mobile Portrait (up to 575px) */
@media(max-width:575px){
    html{font-size:15px}
    .nav-logo-icon{width:36px;height:36px;font-size:.75rem}
    .nav-logo span{display:none}
    .theme-toggle,.mobile-menu-btn{width:40px;height:40px}
    .page-header{padding:calc(var(--nav-height) + 20px) 1rem 32px}
    .page-header h1{font-size:1.5rem}
    .page-header p{font-size:.9375rem}
    .section-title{font-size:1.5rem}
    .btn{width:100%;justify-content:center}
    .footer-legal{flex-direction:column;gap:.5rem}
}

/* Small Mobile (up to 375px) */
@media(max-width:375px){
    html{font-size:14px}
    section{padding:40px .875rem}
    .page-header{padding:calc(var(--nav-height) + 16px) .875rem 28px}
}