/* ═══════════════════════════════════════════
   LogoForge AI — Premium Design System
   Inspired by Linear + Stripe + Canva
   ═══════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=Space+Grotesk:wght@500;600;700&display=swap');

/* ── CSS Variables ── */
:root {
  --primary: #6D28D9;
  --primary-light: #8B5CF6;
  --primary-dark: #5B21B6;
  --secondary: #10B981;
  --accent: #F59E0B;
  --danger: #EF4444;
  --bg: #09090B;
  --bg-2: #18181B;
  --surface: #27272A;
  --surface-hover: #3F3F46;
  --text: #FAFAFA;
  --text-2: #A1A1AA;
  --text-3: #71717A;
  --border: #27272A;
  --border-light: #3F3F46;
  --glow: rgba(109,40,217,0.15);
  --glow-strong: rgba(109,40,217,0.4);
  --r: 12px;
  --r-lg: 20px;
  --r-xl: 28px;
  --shadow: 0 1px 2px rgba(0,0,0,.4), 0 4px 16px rgba(0,0,0,.3);
  --shadow-lg: 0 8px 32px rgba(0,0,0,.5), 0 0 0 1px rgba(255,255,255,.05);
  --glass: rgba(255,255,255,0.03);
  --glass-border: rgba(255,255,255,0.08);
  --ease: cubic-bezier(.4,0,.2,1);
  --font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-display: 'Space Grotesk', sans-serif;
}

[data-theme="light"] {
  --bg: #FFFFFF;
  --bg-2: #F9FAFB;
  --surface: #F3F4F6;
  --surface-hover: #E5E7EB;
  --text: #09090B;
  --text-2: #52525B;
  --text-3: #A1A1AA;
  --border: #E4E4E7;
  --border-light: #D4D4D8;
  --glow: rgba(109,40,217,0.08);
  --glass: rgba(0,0,0,0.02);
  --glass-border: rgba(0,0,0,0.06);
  --shadow: 0 1px 3px rgba(0,0,0,.08), 0 4px 12px rgba(0,0,0,.05);
  --shadow-lg: 0 8px 32px rgba(0,0,0,.1), 0 0 0 1px rgba(0,0,0,.04);
}

/* ── Reset ── */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-font-smoothing:antialiased}
body{font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.6;overflow-x:hidden}
a{color:var(--primary-light);text-decoration:none;transition:color .2s}
a:hover{color:var(--accent)}
img{max-width:100%;height:auto}
button{cursor:pointer;font-family:inherit;border:none}
input,textarea,select{font-family:inherit}

/* ── Layout ── */
.container{max-width:1200px;margin:0 auto;padding:0 24px}
.grid{display:grid;gap:20px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.flex{display:flex;align-items:center}
.flex-center{display:flex;align-items:center;justify-content:center}
.flex-between{display:flex;align-items:center;justify-content:space-between}
.text-center{text-align:center}
.hidden{display:none!important}

/* ── Navbar ── */
.navbar{position:fixed;top:0;left:0;right:0;z-index:1000;height:64px;display:flex;align-items:center;background:rgba(9,9,11,0.8);backdrop-filter:blur(20px) saturate(180%);border-bottom:1px solid var(--glass-border)}
[data-theme="light"] .navbar{background:rgba(255,255,255,0.8)}
.navbar .container{display:flex;align-items:center;justify-content:space-between}
.nav-brand{display:flex;align-items:center;gap:10px;font-family:var(--font-display);font-weight:700;font-size:1.25em;color:var(--text)}
.nav-brand svg{width:28px;height:28px}
.nav-links{display:flex;align-items:center;gap:28px;list-style:none}
.nav-links a{color:var(--text-2);font-size:.9em;font-weight:500;transition:color .2s}
.nav-links a:hover{color:var(--text)}
.nav-actions{display:flex;align-items:center;gap:12px}

/* ── Buttons ── */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:10px 22px;border-radius:var(--r);font-weight:600;font-size:.9em;transition:all .2s var(--ease);white-space:nowrap}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 0 20px var(--glow)}
.btn-primary:hover{background:var(--primary-light);transform:translateY(-1px);box-shadow:0 0 30px var(--glow-strong)}
.btn-secondary{background:var(--glass);color:var(--text);border:1px solid var(--glass-border)}
.btn-secondary:hover{background:var(--surface);border-color:var(--border-light)}
.btn-ghost{background:transparent;color:var(--text-2)}
.btn-ghost:hover{color:var(--text);background:var(--glass)}
.btn-lg{padding:14px 32px;font-size:1em;border-radius:var(--r-lg)}
.btn-sm{padding:6px 14px;font-size:.8em}
.btn-icon{width:40px;height:40px;padding:0;border-radius:var(--r)}

/* ── Theme Toggle ── */
.theme-toggle{width:44px;height:24px;border-radius:12px;background:var(--surface);border:1px solid var(--border);position:relative;cursor:pointer;transition:all .3s}
.theme-toggle::after{content:'';position:absolute;top:3px;left:3px;width:16px;height:16px;border-radius:50%;background:var(--primary);transition:all .3s var(--ease)}
[data-theme="light"] .theme-toggle::after{transform:translateX(20px);background:#F59E0B}

/* ── Hero ── */
.hero{min-height:100vh;display:flex;align-items:center;padding-top:64px;position:relative;overflow:hidden}
.hero::before{content:'';position:absolute;top:0;left:50%;transform:translateX(-50%);width:800px;height:800px;background:radial-gradient(circle,var(--glow),transparent 70%);pointer-events:none;animation:heroGlow 6s ease-in-out infinite alternate}
@keyframes heroGlow{0%{opacity:.6;transform:translateX(-50%) scale(1)}100%{opacity:1;transform:translateX(-50%) scale(1.1)}}
.hero-content{position:relative;z-index:2;max-width:700px}
.hero-badge{display:inline-flex;align-items:center;gap:8px;padding:6px 16px;background:var(--glass);border:1px solid var(--glass-border);border-radius:999px;font-size:.82em;color:var(--text-2);margin-bottom:24px}
.hero-badge .dot{width:6px;height:6px;border-radius:50%;background:var(--secondary);animation:pulse 2s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.4}}
.hero h1{font-family:var(--font-display);font-size:clamp(2.8em,6vw,4.2em);font-weight:800;line-height:1.08;margin-bottom:20px;letter-spacing:-.02em}
.hero h1 .gradient{background:linear-gradient(135deg,var(--primary-light),var(--secondary));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero p{font-size:1.15em;color:var(--text-2);max-width:540px;margin-bottom:36px;line-height:1.7}
.hero-btns{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:48px}

/* ── Logo Preview Panel ── */
.hero-preview{position:relative;z-index:2;margin-left:auto;max-width:500px}
.preview-card{background:var(--bg-2);border:1px solid var(--border);border-radius:var(--r-xl);padding:32px;box-shadow:var(--shadow-lg);position:relative;overflow:hidden}
.preview-card::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--primary),var(--secondary),var(--accent))}
.preview-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:20px}
.preview-logo{background:var(--surface);border-radius:var(--r);padding:24px;display:flex;align-items:center;justify-content:center;aspect-ratio:1;transition:all .3s;cursor:pointer;border:2px solid transparent}
.preview-logo:hover{border-color:var(--primary);transform:scale(1.03)}
.preview-logo span{font-size:2em;font-weight:700;color:var(--text)}
.hero-layout{display:flex;align-items:center;gap:60px;margin-top:80px}

/* ── Stats ── */
.stats{display:flex;gap:48px;margin-top:48px}
.stat-num{font-family:var(--font-display);font-size:1.8em;font-weight:700;color:var(--text)}
.stat-label{color:var(--text-3);font-size:.85em;margin-top:2px}

/* ── Section ── */
.section{padding:100px 0}
.section-header{text-align:center;max-width:640px;margin:0 auto 60px}
.section-badge{display:inline-block;padding:5px 14px;background:var(--glass);border:1px solid var(--glass-border);border-radius:999px;font-size:.8em;color:var(--primary-light);font-weight:600;margin-bottom:16px;letter-spacing:.03em}
.section-header h2{font-family:var(--font-display);font-size:2.4em;font-weight:700;margin-bottom:14px;letter-spacing:-.01em}
.section-header p{color:var(--text-2);font-size:1.05em;line-height:1.7}

/* ── Feature Cards ── */
.feature-card{background:var(--glass);border:1px solid var(--glass-border);border-radius:var(--r-lg);padding:28px;transition:all .3s var(--ease);position:relative;overflow:hidden}
.feature-card:hover{border-color:var(--primary);transform:translateY(-4px);box-shadow:0 12px 40px var(--glow)}
.feature-icon{width:48px;height:48px;border-radius:var(--r);background:linear-gradient(135deg,var(--primary),var(--primary-light));display:flex;align-items:center;justify-content:center;font-size:1.3em;margin-bottom:18px}
.feature-card h3{font-size:1.1em;font-weight:600;margin-bottom:8px}
.feature-card p{color:var(--text-2);font-size:.9em;line-height:1.7}

/* ── How It Works ── */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:32px;counter-reset:step}
.step{counter-increment:step;text-align:center;padding:32px 20px;position:relative}
.step::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:48px;height:48px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--secondary));color:#fff;font-weight:700;font-size:1.2em;margin:0 auto 20px}
.step h3{font-size:1.1em;margin-bottom:8px}
.step p{color:var(--text-2);font-size:.9em;line-height:1.7}

/* ── Canvas Generator ── */
.generator-section{background:var(--bg-2);border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.generator-panel{background:var(--bg);border:1px solid var(--border);border-radius:var(--r-xl);overflow:hidden;box-shadow:var(--shadow-lg)}
.generator-sidebar{padding:32px;border-right:1px solid var(--border)}
.generator-main{padding:32px;display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:500px;background:var(--bg-2)}
.gen-field{margin-bottom:20px}
.gen-field label{display:block;font-size:.85em;font-weight:600;color:var(--text-2);margin-bottom:8px}
.gen-input{width:100%;padding:12px 16px;background:var(--bg-2);border:1px solid var(--border);border-radius:var(--r);color:var(--text);font-size:.95em;transition:border-color .2s}
.gen-input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px var(--glow)}
.gen-textarea{resize:vertical;min-height:80px}
.gen-color-row{display:flex;gap:8px;flex-wrap:wrap}
.gen-color{width:36px;height:36px;border-radius:50%;cursor:pointer;border:3px solid transparent;transition:all .2s}
.gen-color.active{border-color:var(--text);transform:scale(1.15)}
.gen-color:hover{transform:scale(1.1)}
.gen-slider{width:100%;accent-color:var(--primary)}
.style-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}
.style-chip{padding:10px 8px;background:var(--bg-2);border:2px solid var(--border);border-radius:var(--r);text-align:center;cursor:pointer;transition:all .2s;font-size:.82em;font-weight:500}
.style-chip:hover,.style-chip.active{border-color:var(--primary);background:var(--glow);color:var(--primary-light)}

/* ── Canvas Output ── */
.canvas-output{width:100%;max-width:400px;aspect-ratio:1;border-radius:var(--r-lg);overflow:hidden;position:relative}
.canvas-output canvas{width:100%;height:100%;display:block}
.canvas-actions{display:flex;gap:10px;margin-top:20px}

/* ── Examples Gallery ── */
.gallery{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.gallery-item{background:var(--surface);border-radius:var(--r);aspect-ratio:1;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all .3s;border:2px solid transparent}
.gallery-item:hover{border-color:var(--primary);transform:scale(1.03)}
.gallery-item canvas{width:100%;height:100%}

/* ── Pricing ── */
.pricing-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:start}
.price-card{background:var(--glass);border:1px solid var(--glass-border);border-radius:var(--r-xl);padding:36px;transition:all .3s}
.price-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.price-card.featured{border-color:var(--primary);background:linear-gradient(135deg,rgba(109,40,217,0.08),rgba(16,185,129,0.04))}
.price-card.featured::before{content:'MOST POPULAR';position:absolute;top:-12px;left:50%;transform:translateX(-50%);padding:5px 16px;background:linear-gradient(135deg,var(--primary),var(--secondary));color:#fff;border-radius:999px;font-size:.7em;font-weight:700;letter-spacing:1px}
.price-card{position:relative}
.price-card h3{font-size:1.15em;margin-bottom:6px}
.price-card .subtitle{color:var(--text-3);font-size:.85em}
.price-amount{font-family:var(--font-display);font-size:3em;font-weight:800;margin:16px 0 4px}
.price-amount span{font-size:.35em;color:var(--text-3);font-weight:400}
.price-card ul{list-style:none;margin:24px 0;padding:0}
.price-card li{padding:9px 0;color:var(--text-2);font-size:.9em;display:flex;align-items:center;gap:10px;border-bottom:1px solid var(--border)}
.price-card li:last-child{border:none}
.price-card li svg{width:18px;height:18px;color:var(--secondary);flex-shrink:0}

/* ── Testimonials ── */
.testimonials-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.testimonial{background:var(--glass);border:1px solid var(--glass-border);border-radius:var(--r-lg);padding:28px}
.testimonial-stars{color:#F59E0B;font-size:.9em;margin-bottom:12px}
.testimonial p{color:var(--text-2);font-size:.9em;line-height:1.7;margin-bottom:16px;font-style:italic}
.testimonial-author{display:flex;align-items:center;gap:12px}
.testimonial-avatar{width:40px;height:40px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--secondary));display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:.85em}
.testimonial-name{font-weight:600;font-size:.9em}
.testimonial-role{color:var(--text-3);font-size:.8em}

/* ── FAQ ── */
.faq-list{max-width:700px;margin:0 auto}
.faq-item{border-bottom:1px solid var(--border);padding:20px 0}
.faq-q{font-weight:600;font-size:1.05em;cursor:pointer;display:flex;justify-content:space-between;align-items:center;list-style:none}
.faq-q::after{content:'+';font-size:1.4em;color:var(--primary-light);transition:transform .3s}
.faq-item[open] .faq-q::after{content:'−'}
.faq-a{color:var(--text-2);font-size:.95em;line-height:1.7;margin-top:12px}

/* ── CTA Banner ── */
.cta-banner{background:linear-gradient(135deg,var(--primary),#4F46E5,var(--primary-light));border-radius:var(--r-xl);padding:60px;text-align:center;position:relative;overflow:hidden}
.cta-banner::before{content:'';position:absolute;top:-100px;right:-100px;width:300px;height:300px;background:rgba(255,255,255,0.1);border-radius:50%}
.cta-banner h2{font-family:var(--font-display);font-size:2.2em;color:#fff;margin-bottom:12px}
.cta-banner p{color:rgba(255,255,255,.8);margin-bottom:28px;font-size:1.05em}
.cta-banner .btn{background:#fff;color:var(--primary);font-weight:700}
.cta-banner .btn:hover{background:var(--bg-2);color:var(--primary)}

/* ── Footer ── */
.footer{padding:60px 0 24px;border-top:1px solid var(--border);margin-top:40px}
.footer-grid{display:grid;grid-template-columns:2fr repeat(3,1fr);gap:40px}
.footer-brand p{color:var(--text-3);font-size:.9em;margin-top:10px;line-height:1.7}
.footer h4{font-size:.9em;font-weight:600;margin-bottom:14px;color:var(--text)}
.footer ul{list-style:none}
.footer li{margin-bottom:8px}
.footer li a{color:var(--text-3);font-size:.88em;transition:color .2s}
.footer li a:hover{color:var(--text)}
.footer-bottom{margin-top:32px;padding-top:20px;border-top:1px solid var(--border);display:flex;justify-content:space-between;color:var(--text-3);font-size:.82em}

/* ── PayPal ── */
.paypal-bar{text-align:center;margin:40px 0;padding:28px;background:linear-gradient(135deg,#003087,#0070BA);border-radius:var(--r-xl)}
.paypal-bar p{color:#fff;font-size:1.1em;margin-bottom:14px;font-weight:600}
.paypal-btns{display:flex;justify-content:center;gap:10px;flex-wrap:wrap}
.paypal-bar a{display:inline-block;padding:10px 28px;background:#fff;color:#003087;border-radius:999px;font-weight:700;font-size:.9em;transition:all .2s}
.paypal-bar a:hover{transform:translateY(-2px);box-shadow:0 6px 20px rgba(0,0,0,.3);color:#003087}
.paypal-bar .note{color:rgba(255,255,255,.65);font-size:.8em;margin-top:10px}

/* ── Responsive ── */
@media(max-width:1024px){
  .hero-layout{flex-direction:column;text-align:center}
  .hero p{margin-left:auto;margin-right:auto}
  .hero-btns{justify-content:center}
  .stats{justify-content:center}
  .hero-preview{margin:0 auto}
  .pricing-grid,.testimonials-grid,.grid-3{grid-template-columns:1fr 1fr}
  .gallery{grid-template-columns:repeat(3,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:768px){
  .nav-links{display:none}
  .grid-2,.grid-3,.grid-4,.pricing-grid,.testimonials-grid{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .gallery{grid-template-columns:repeat(2,1fr)}
  .hero-layout{margin-top:40px}
  .hero{min-height:auto;padding:120px 0 60px}
  .hero h1{font-size:2em}
  .section{padding:60px 0}
  .footer-grid{grid-template-columns:1fr}
  .generator-sidebar{border-right:none;border-bottom:1px solid var(--border)}
}

/* ── Scrollbar ── */
::-webkit-scrollbar{width:6px}
::-webkit-scrollbar-track{background:var(--bg)}
::-webkit-scrollbar-thumb{background:var(--surface);border-radius:3px}
::-webkit-scrollbar-thumb:hover{background:var(--primary)}

/* ── Animation ── */
.fade-up{opacity:0;transform:translateY(30px);transition:all .7s var(--ease)}
.fade-up.visible{opacity:1;transform:none}