@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;600;800&display=swap');

:root{
  --primary:#8b5cf6;
  --accent:#06b6d4;
  --bg:#0f172a;
  --muted:#94a3b8;
  --card-bg:rgba(255,255,255,0.03);
}

*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%}
body{font-family:'Inter',system-ui,-apple-system,Segoe UI,Roboto,Arial;background:var(--bg);color:#fff;line-height:1.5}
.bg-gradient{position:fixed;inset:0;background:linear-gradient(135deg,#667eea 0,#764ba2 50%,#f093fb 100%);opacity:0.06;z-index:0}
.container{max-width:1100px;margin:0 auto;padding:2rem;position:relative;z-index:1}

/* Header */
header{padding:1rem 0}
nav{display:flex;justify-content:space-between;align-items:center}
.logo{font-weight:800;background:linear-gradient(135deg,var(--primary),var(--accent));-webkit-background-clip:text;background-clip:text;color:transparent;font-size:1.25rem}
.nav-links{display:flex;gap:1rem}
.nav-links a{color:rgba(255,255,255,0.85);text-decoration:none;padding:.35rem .5rem;border-radius:6px}

/* Hero */
.hero{padding:6rem 0 3rem;text-align:center}
.hero-badge{display:inline-block;padding:.5rem 1rem;background:rgba(139,92,246,0.12);border-radius:999px;font-weight:600;color:#e9d7ff;margin-bottom:1rem}
.hero h1{font-size:clamp(2rem,5vw,3.5rem);font-weight:800;margin-bottom:1rem;background:linear-gradient(135deg,#fff,#c4b5fd);-webkit-background-clip:text;color:transparent}
.hero p{color:var(--muted);max-width:760px;margin:.5rem auto 1.5rem}
.cta-group{display:flex;gap:1rem;justify-content:center;flex-wrap:wrap}
.btn{padding:.75rem 1.25rem;border-radius:12px;border:none;cursor:pointer;font-weight:600}
.btn-primary{background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff}
.btn-secondary{background:rgba(255,255,255,0.06);color:#fff;border:1px solid rgba(255,255,255,0.04)}

.hero-visual{margin:2.5rem auto 0;max-width:900px;height:300px;background:linear-gradient(135deg,rgba(139,92,246,0.12),rgba(6,182,212,0.12));border-radius:20px;border:1px solid rgba(255,255,255,0.05)}

/* Case study grid */
.case-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:1rem;margin-top:1rem}
.case-card{background:linear-gradient(180deg,rgba(255,255,255,0.02),rgba(255,255,255,0.01));padding:0;border-radius:12px;border:1px solid rgba(255,255,255,0.03);overflow:hidden}
.case-card img{display:block;width:100%;height:auto;object-fit:cover}
.case-card .case-caption{padding:.75rem;color:var(--muted);font-size:.95rem}

/* Features */
.features{padding:4rem 0}
.section-header{text-align:center;margin-bottom:2rem}
.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:1.25rem}
.feature-card{background:var(--card-bg);border:1px solid rgba(255,255,255,0.04);padding:1.5rem;border-radius:14px}
.feature-icon{width:50px;height:50px;background:linear-gradient(135deg,var(--primary),var(--accent));border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:1rem}

/* Pricing */
.pricing{padding:4rem 0;background:rgba(255,255,255,0.01)}
.pricing-grid{display:grid;grid-template-columns:1fr;gap:1rem}
.pricing-card{background:var(--card-bg);border:1px solid rgba(255,255,255,0.04);padding:1.5rem;border-radius:14px}
.pricing-card.featured{border-color:rgba(139,92,246,0.5);transform:scale(1.02)}
.pricing-badge{position:absolute;top:-10px;right:20px;background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff;padding:.4rem .8rem;border-radius:999px;font-weight:700}
.price{font-size:1.75rem;font-weight:800;margin:.5rem 0}
.pricing-features{list-style:none;margin:1rem 0;padding:0}
.pricing-actions{display:flex;gap:.5rem;margin-top:1rem}

/* Admin & table helpers */
.table{width:100%;border-collapse:collapse}
th,td{padding:.6rem .75rem;border-bottom:1px solid rgba(255,255,255,0.03);text-align:left}

footer{padding:2rem 0;text-align:center;color:var(--muted);border-top:1px solid rgba(255,255,255,0.03);margin-top:2rem}

@media(min-width:900px){.pricing-grid{grid-template-columns:repeat(3,1fr)}}

/* Accessibility focus */
a:focus{outline:2px solid rgba(139,92,246,0.6);outline-offset:3px}
a:focus-visible{outline:3px solid rgba(139,92,246,0.75);outline-offset:3px}

/* Small screens adjustments */
@media(max-width:600px){.container{padding:1rem}.hero{padding:3rem 0}.hero-visual{height:180px}}

/* Skip link for accessibility */
.skip-link{position:absolute;left:-9999px;top:auto;width:1px;height:1px;overflow:hidden}
.skip-link:focus{position:fixed;left:20px;top:20px;width:auto;height:auto;padding:.5rem 1rem;background:rgba(255,255,255,0.95);color:var(--bg);border-radius:6px;z-index:10000}

/* ASCII Character Bot */
.ascii-bot{position:fixed;bottom:30px;right:30px;z-index:1000;cursor:pointer;transition:all .3s ease}
.ascii-character{font-family:'Courier New',monospace;font-size:2rem;line-height:1.2;white-space:pre;background:rgba(139,92,246,0.18);border:2px solid var(--primary);border-radius:20px;padding:1rem;box-shadow:0 10px 30px rgba(139,92,246,0.4);backdrop-filter:blur(10px);animation:float 3s ease-in-out infinite}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}
.ascii-bot:hover .ascii-character{transform:scale(1.05) translateY(-5px);box-shadow:0 15px 40px rgba(139,92,246,0.6)}
.speech-bubble{position:absolute;bottom:120%;right:0;background:rgba(255,255,255,0.95);color:var(--bg);padding:1rem;border-radius:15px;max-width:280px;box-shadow:0 10px 30px rgba(0,0,0,0.3);opacity:0;visibility:hidden;transition:all .25s ease;font-size:.95rem}
.speech-bubble::after{content:'';position:absolute;bottom:-10px;right:20px;width:0;height:0;border-left:10px solid transparent;border-right:10px solid transparent;border-top:10px solid rgba(255,255,255,0.95)}
.speech-bubble.show{opacity:1;visibility:visible;transform:translateY(-6px)}

/* Chat Modal */
.chat-modal{position:fixed;bottom:30px;right:30px;width:400px;max-width:calc(100vw - 60px);height:600px;max-height:calc(100vh - 100px);background:rgba(15,23,42,0.98);border:1px solid rgba(139,92,246,0.5);border-radius:20px;box-shadow:0 20px 60px rgba(0,0,0,0.5);backdrop-filter:blur(20px);display:none;flex-direction:column;z-index:999;animation:slideUp .3s ease}
.chat-modal.open{display:flex}
.chat-header{padding:1rem 1.25rem;border-bottom:1px solid rgba(255,255,255,0.06);display:flex;justify-content:space-between;align-items:center}
.chat-header h3{font-size:1.125rem;display:flex;align-items:center;gap:.5rem}
.close-chat{background:none;border:none;color:#fff;font-size:1.2rem;cursor:pointer;padding:0;width:32px;height:32px;border-radius:50%;transition:background .2s}
.close-chat:hover{background:rgba(255,255,255,0.04)}
.chat-messages{flex:1;padding:1rem;overflow-y:auto;display:flex;flex-direction:column;gap:.75rem}
.message{display:flex;gap:.75rem;animation:messageSlide .25s ease}
@keyframes messageSlide{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
.message.user{flex-direction:row-reverse}
.message-avatar{font-family:'Courier New',monospace;font-size:1rem;background:rgba(139,92,246,0.18);border:1px solid var(--primary);border-radius:8px;padding:.4rem;line-height:1;flex-shrink:0}
.message.user .message-avatar{background:rgba(6,182,212,0.18);border-color:var(--accent)}
.message-content{background:rgba(255,255,255,0.04);padding:.6rem .85rem;border-radius:10px;max-width:75%;border:1px solid rgba(255,255,255,0.03)}
.message.user .message-content{background:rgba(139,92,246,0.12);border-color:rgba(139,92,246,0.18)}
.chat-input-area{padding:.75rem 1rem;border-top:1px solid rgba(255,255,255,0.04);display:flex;gap:.5rem}
.chat-input{flex:1;background:rgba(255,255,255,0.03);border:1px solid rgba(255,255,255,0.04);border-radius:10px;padding:.6rem .8rem;color:#fff;font-size:.95rem}
.send-btn{background:linear-gradient(135deg,var(--primary),var(--accent));border:none;border-radius:10px;padding:.6rem .95rem;color:#fff;font-weight:700;cursor:pointer}
.send-btn:disabled{opacity:.6;cursor:not-allowed}

@media(max-width:768px){.ascii-bot{bottom:20px;right:20px}.chat-modal{bottom:20px;right:20px;width:calc(100vw - 40px);height:calc(100vh - 80px)}}

/* TODO: Backend integration - wire chat input to assistant API, add accessible labels and keyboard controls */