/* ─── Variables ──────────────────────────────────────────────────── */
:root {
  --bg:#0d0d14;--bg2:#13131f;--bg3:#1a1a2e;--bg4:#22223a;
  --border:rgba(255,255,255,0.07);--border2:rgba(99,102,241,0.22);
  --text:#e8e8f0;--text2:#a0a0b8;--text3:#6b6b88;
  --accent:#6366f1;--accent2:#8b5cf6;--accent3:#a78bfa;
  --accent-glow:rgba(99,102,241,0.22);
  --success:#10b981;--warning:#f59e0b;--danger:#ef4444;
  --radius:14px;--radius-sm:8px;--radius-lg:20px;
  --shadow:0 4px 24px rgba(0,0,0,0.4);--shadow-lg:0 12px 48px rgba(0,0,0,0.5);
  --sidebar-w:272px;--hdr-h:58px;
  --tr:0.18s cubic-bezier(0.4,0,0.2,1);
}
body.light {
  --bg:#f5f5ff;--bg2:#fff;--bg3:#ededff;--bg4:#e0e0f8;
  --border:rgba(0,0,0,0.07);--border2:rgba(99,102,241,0.2);
  --text:#1a1a2e;--text2:#4a4a6a;--text3:#8888aa;
  --accent-glow:rgba(99,102,241,0.1);
  --shadow:0 4px 24px rgba(0,0,0,0.07);--shadow-lg:0 12px 48px rgba(0,0,0,0.1);
}
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{font-size:16px;scroll-behavior:smooth}
body{font-family:'Inter',system-ui,sans-serif;background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased;overflow-x:hidden}
body.chat-mode{overflow:hidden;height:100vh}
/* Code header */
.code-header{display:flex;align-items:center;justify-content:space-between;background:rgba(255,255,255,0.04);border-bottom:1px solid rgba(255,255,255,0.06);padding:6px 12px;border-radius:10px 10px 0 0}
.code-lang{font-size:11px;font-weight:600;color:var(--accent3);text-transform:uppercase;letter-spacing:.5px}
.copy-btn{background:var(--bg4);border:1px solid var(--border);color:var(--text3);border-radius:5px;padding:3px 9px;font-size:11px;transition:var(--tr)}
.copy-btn:hover{color:var(--text);background:var(--bg3)}
.msg.assistant .msg-bubble pre{border-radius:0 0 10px 10px;margin-top:0}
/* AI Language custom dropdown */
.lang-dropdown{position:relative}
.lang-pill{display:flex;align-items:center;gap:5px;background:var(--bg3);border:1px solid var(--border);border-radius:8px;padding:5px 10px;font-size:12.5px;font-weight:500;color:var(--text2);cursor:pointer;transition:var(--tr);white-space:nowrap;font-family:inherit}
.lang-pill:hover{border-color:var(--border2);color:var(--text);background:var(--bg4)}
.lang-menu{position:absolute;top:calc(100% + 7px);right:0;background:var(--bg2);border:1px solid var(--border);border-radius:10px;padding:5px;min-width:140px;box-shadow:var(--shadow-lg);z-index:300;animation:dropDown .15s ease}
.lang-opt{display:flex;align-items:center;width:100%;padding:8px 10px;border-radius:7px;font-size:13px;color:var(--text2);background:none;cursor:pointer;font-family:inherit;transition:var(--tr);text-align:left;gap:7px}
.lang-opt:hover{background:var(--bg3);color:var(--text)}
.lang-opt.active{background:rgba(99,102,241,0.1);color:var(--accent3);font-weight:600}
/* File upload banner */
.file-preview{display:flex;align-items:center;gap:9px;background:rgba(99,102,241,0.08);border:1px solid var(--border2);border-radius:9px;padding:9px 13px;margin:0 16px 8px;font-size:13px;color:var(--text2);flex-shrink:0;max-width:820px;margin-left:auto;margin-right:auto}
.file-preview-name{font-weight:600;color:var(--accent3);flex:1;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.file-preview-size{font-size:11.5px;color:var(--text3);white-space:nowrap}
.file-remove-btn{background:none;color:var(--text3);font-size:18px;line-height:1;padding:0 4px;transition:var(--tr)}
.file-remove-btn:hover{color:var(--danger)}
a{color:var(--accent3);text-decoration:none}
a:hover{text-decoration:underline}
button{cursor:pointer;font-family:inherit;border:none;outline:none}
input,select,textarea{font-family:inherit;outline:none}
.hidden{display:none!important}
::-webkit-scrollbar{width:4px;height:4px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:var(--bg4);border-radius:99px}
::-webkit-scrollbar-thumb:hover{background:var(--accent)}

/* ═══ LANDING PAGE ═══════════════════════════════════════════════ */
.container{max-width:1120px;margin:0 auto;padding:0 24px}

/* Nav */
.nav{position:fixed;top:0;left:0;right:0;z-index:100;transition:var(--tr)}
.nav.scrolled{background:rgba(13,13,20,0.85);backdrop-filter:blur(16px);border-bottom:1px solid var(--border)}
body.light .nav.scrolled{background:rgba(245,245,255,0.9)}
.nav-inner{max-width:1120px;margin:0 auto;padding:0 24px;height:66px;display:flex;align-items:center;gap:20px}
.nav-logo{display:flex;align-items:center;gap:9px;font-size:18px;font-weight:800;color:var(--text);letter-spacing:-.4px;text-decoration:none}
.nav-logo:hover{text-decoration:none}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:24px}
.nav-link{font-size:14px;font-weight:500;color:var(--text2);padding:7px 14px;border-radius:var(--radius-sm);transition:var(--tr)}
.nav-link:hover{color:var(--text);background:var(--bg3);text-decoration:none}
.nav-actions{display:flex;align-items:center;gap:8px;margin-left:auto}

/* Hero */
.hero{min-height:100vh;display:flex;align-items:center;padding:80px 0 60px;position:relative;overflow:hidden}
.hero-bg{position:absolute;inset:0;pointer-events:none;z-index:0}
.hero-orb{position:absolute;border-radius:50%;filter:blur(90px);opacity:.3}
.hero-orb-1{width:700px;height:700px;background:radial-gradient(circle,#6366f1,transparent 70%);top:-200px;left:-100px;animation:orbFloat 9s ease-in-out infinite}
.hero-orb-2{width:500px;height:500px;background:radial-gradient(circle,#8b5cf6,transparent 70%);bottom:-100px;right:-50px;animation:orbFloat 11s ease-in-out infinite reverse}
.hero-grid{position:absolute;inset:0;background-image:linear-gradient(rgba(99,102,241,0.035) 1px,transparent 1px),linear-gradient(90deg,rgba(99,102,241,0.035) 1px,transparent 1px);background-size:44px 44px}
@keyframes orbFloat{0%,100%{transform:translateY(0) scale(1)}50%{transform:translateY(-28px) scale(1.04)}}
.hero .container{position:relative;z-index:1;text-align:center}
.hero-badge{display:inline-flex;align-items:center;gap:8px;background:rgba(99,102,241,0.1);border:1px solid var(--border2);border-radius:100px;padding:6px 16px;font-size:13px;font-weight:600;color:var(--accent3);margin-bottom:28px}
.badge-dot{width:7px;height:7px;background:var(--success);border-radius:50%;animation:pulse2 2s infinite}
@keyframes pulse2{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.6;transform:scale(0.8)}}
.hero-title{font-size:clamp(38px,6vw,72px);font-weight:900;line-height:1.1;color:var(--text);letter-spacing:-2px;margin-bottom:20px}
.hero-gradient{background:linear-gradient(135deg,var(--accent),var(--accent3),#ec4899);-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.hero-desc{font-size:clamp(15px,2vw,19px);color:var(--text2);line-height:1.75;max-width:640px;margin:0 auto 36px}
.hero-cta{display:flex;align-items:center;justify-content:center;gap:14px;flex-wrap:wrap;margin-bottom:16px}
.btn-hero-primary{display:inline-flex;align-items:center;gap:10px;padding:14px 28px;background:linear-gradient(135deg,var(--accent),var(--accent2));color:white;border-radius:var(--radius);font-size:16px;font-weight:700;transition:var(--tr);box-shadow:0 8px 32px rgba(99,102,241,0.4)}
.btn-hero-primary:hover{transform:translateY(-2px);box-shadow:0 12px 40px rgba(99,102,241,0.55)}
.btn-hero-secondary{display:inline-flex;align-items:center;gap:8px;padding:13px 24px;background:var(--bg2);border:1.5px solid var(--border);border-radius:var(--radius);font-size:15px;font-weight:600;color:var(--text);transition:var(--tr)}
.btn-hero-secondary:hover{border-color:var(--border2);background:var(--bg3)}
.hero-note{font-size:13px;color:var(--text3);display:flex;align-items:center;justify-content:center;gap:7px;margin-top:8px}

/* Hero Preview */
.hero-preview{background:var(--bg2);border:1px solid var(--border);border-radius:16px;overflow:hidden;max-width:700px;margin:48px auto 0;box-shadow:var(--shadow-lg),0 0 0 1px var(--border2);text-align:left}
.preview-bar{display:flex;align-items:center;gap:10px;padding:12px 16px;background:var(--bg3);border-bottom:1px solid var(--border)}
.preview-dots{display:flex;gap:5px}
.preview-dots span{width:10px;height:10px;border-radius:50%;background:var(--bg4)}
.preview-dots span:first-child{background:#ff5f56}
.preview-dots span:nth-child(2){background:#ffbd2e}
.preview-dots span:last-child{background:#27c93f}
.preview-title{font-size:13px;font-weight:600;color:var(--text);margin-left:4px;flex:1}
.preview-model{font-size:11px;font-weight:600;background:rgba(99,102,241,0.12);border:1px solid var(--border2);color:var(--accent3);padding:3px 9px;border-radius:100px}
.preview-body{padding:20px;display:flex;flex-direction:column;gap:14px;min-height:140px}
.preview-msg{display:flex;gap:10px;align-items:flex-start}
.preview-msg.user{justify-content:flex-end}
.preview-msg.user span{background:linear-gradient(135deg,var(--accent),var(--accent2));color:white;padding:10px 15px;border-radius:var(--radius);border-bottom-right-radius:4px;font-size:14px;max-width:80%}
.preview-avatar{width:28px;height:28px;border-radius:50%;background:var(--bg3);border:1px solid var(--border2);display:flex;align-items:center;justify-content:center;font-size:13px;flex-shrink:0;margin-top:2px}
.preview-bubble{background:var(--bg3);border:1px solid var(--border);border-radius:var(--radius);border-bottom-left-radius:4px;padding:10px 14px;font-size:13.5px;line-height:1.7;color:var(--text2);max-width:calc(100% - 40px)}
.preview-bubble strong{color:var(--text)}
.preview-bubble em{color:var(--accent3);font-style:normal}
.preview-cursor{display:inline-block;width:2px;height:14px;background:var(--accent);margin-left:2px;vertical-align:middle;animation:blink 1s step-end infinite}
@keyframes blink{0%,100%{opacity:1}50%{opacity:0}}

/* Stats */
.stats-bar{padding:36px 0;border-top:1px solid var(--border);border-bottom:1px solid var(--border);background:var(--bg2)}
.stats-grid{display:flex;align-items:center;justify-content:center;gap:0;flex-wrap:wrap}
.stat{text-align:center;padding:8px 40px}
.stat-num{font-size:26px;font-weight:800;color:var(--text);letter-spacing:-0.5px}
.stat-label{font-size:13px;color:var(--text3);margin-top:3px}
.stat-div{width:1px;height:40px;background:var(--border)}

/* Sections */
.section{padding:90px 0}
.section-alt{background:var(--bg2)}
.section-header{text-align:center;margin-bottom:56px}
.section-badge{display:inline-block;background:rgba(99,102,241,0.1);border:1px solid var(--border2);border-radius:100px;padding:5px 14px;font-size:12px;font-weight:700;color:var(--accent3);text-transform:uppercase;letter-spacing:.8px;margin-bottom:16px}
.section-title{font-size:clamp(26px,4vw,42px);font-weight:800;color:var(--text);letter-spacing:-1px;margin-bottom:14px;line-height:1.2}
.section-desc{font-size:16px;color:var(--text2);max-width:560px;margin:0 auto}

/* Features grid */
.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:20px}
.feature-card{background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius);padding:28px;transition:var(--tr)}
.section-alt .feature-card{background:var(--bg3)}
.feature-card:hover{border-color:var(--border2);transform:translateY(-3px);box-shadow:var(--shadow)}
.feature-icon{font-size:32px;margin-bottom:14px}
.feature-card h3{font-size:17px;font-weight:700;color:var(--text);margin-bottom:8px}
.feature-card p{font-size:14px;color:var(--text2);line-height:1.7}

/* Models grid */
.models-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:18px}
.model-card{background:var(--bg3);border:1px solid var(--border);border-radius:var(--radius);padding:22px;transition:var(--tr)}
.model-card.featured{border-color:var(--border2);background:linear-gradient(135deg,rgba(99,102,241,0.06),rgba(139,92,246,0.06))}
.model-card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.model-header{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.model-logo{width:38px;height:38px;border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:17px;font-weight:800;color:white;flex-shrink:0}
.model-logo.anthropic{background:linear-gradient(135deg,#d97706,#b45309)}
.model-logo.amazon{background:linear-gradient(135deg,#ff9900,#cc7a00)}
.model-logo.meta{background:linear-gradient(135deg,#1877f2,#0d5dbf)}
.model-name{font-size:15px;font-weight:700;color:var(--text)}
.model-maker{font-size:12px;color:var(--text3);margin-top:1px}
.model-desc{font-size:13px;color:var(--text2);line-height:1.65;margin-bottom:12px}
.model-tags{display:flex;flex-wrap:wrap;gap:6px}
.model-tags span{font-size:11px;background:var(--bg4);border:1px solid var(--border);border-radius:100px;padding:3px 10px;color:var(--text3)}
.model-badge-best{margin-left:auto;background:linear-gradient(135deg,#6366f1,#8b5cf6);color:white;font-size:10px;font-weight:700;padding:3px 8px;border-radius:100px;white-space:nowrap}
.model-badge-fast{margin-left:auto;background:rgba(16,185,129,0.15);color:#10b981;font-size:10px;font-weight:700;padding:3px 8px;border-radius:100px;border:1px solid rgba(16,185,129,0.25)}
.model-badge-open{margin-left:auto;background:rgba(245,158,11,0.12);color:#f59e0b;font-size:10px;font-weight:700;padding:3px 8px;border-radius:100px;border:1px solid rgba(245,158,11,0.25)}

/* How it works */
.steps-grid{display:flex;align-items:center;justify-content:center;gap:0;flex-wrap:wrap}
.step-card{background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius);padding:32px 28px;text-align:center;flex:1;min-width:220px;max-width:280px;transition:var(--tr)}
.step-card:hover{border-color:var(--border2);transform:translateY(-3px);box-shadow:var(--shadow)}
.step-num{width:44px;height:44px;border-radius:50%;background:linear-gradient(135deg,var(--accent),var(--accent2));color:white;font-size:18px;font-weight:800;display:flex;align-items:center;justify-content:center;margin:0 auto 16px}
.step-card h3{font-size:16px;font-weight:700;color:var(--text);margin-bottom:8px}
.step-card p{font-size:13.5px;color:var(--text2);line-height:1.65}
.step-arrow{font-size:24px;color:var(--text3);padding:0 16px;flex-shrink:0}

/* Pricing */
.pricing-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:20px;max-width:900px;margin:0 auto}
.pricing-card{background:var(--bg3);border:1px solid var(--border);border-radius:var(--radius-lg);padding:30px;position:relative;transition:var(--tr)}
.pricing-card.featured{background:linear-gradient(135deg,rgba(99,102,241,0.08),rgba(139,92,246,0.06));border-color:var(--border2);transform:scale(1.03)}
.pricing-card:hover{box-shadow:var(--shadow-lg)}
.pricing-badge{position:absolute;top:-12px;left:50%;transform:translateX(-50%);background:linear-gradient(135deg,var(--accent),var(--accent2));color:white;font-size:11px;font-weight:700;padding:4px 14px;border-radius:100px;white-space:nowrap}
.pricing-icon{font-size:36px;margin-bottom:12px}
.pricing-card h3{font-size:20px;font-weight:700;color:var(--text);margin-bottom:6px}
.pricing-main{display:flex;align-items:baseline;gap:6px;margin:12px 0 4px}
.price-big{font-size:42px;font-weight:900;color:var(--text);letter-spacing:-1.5px}
.price-unit{font-size:14px;color:var(--text3)}
.pricing-sub{font-size:12.5px;color:var(--text3);margin-bottom:20px}
.pricing-features{list-style:none;display:flex;flex-direction:column;gap:8px;margin-bottom:24px}
.pricing-features li{font-size:13.5px;color:var(--text2)}
.btn-outline-pricing{width:100%;padding:11px;background:var(--bg4);border:1.5px solid var(--border);border-radius:var(--radius-sm);font-size:13.5px;font-weight:600;color:var(--text);transition:var(--tr)}
.btn-outline-pricing:hover{border-color:var(--border2);background:var(--bg3)}

/* CTA */
.cta-section{background:var(--bg)}
.cta-box{background:linear-gradient(135deg,rgba(99,102,241,0.1),rgba(139,92,246,0.08));border:1px solid var(--border2);border-radius:24px;padding:70px 40px;text-align:center;position:relative;overflow:hidden;max-width:800px;margin:0 auto}
.cta-orb{position:absolute;width:500px;height:500px;border-radius:50%;background:radial-gradient(circle,rgba(99,102,241,0.2),transparent 70%);top:50%;left:50%;transform:translate(-50%,-50%);pointer-events:none}
.cta-box h2{font-size:clamp(26px,4vw,38px);font-weight:800;color:var(--text);letter-spacing:-0.8px;margin-bottom:14px;position:relative}
.cta-box p{font-size:16px;color:var(--text2);margin-bottom:32px;position:relative}
.cta-btns{display:flex;align-items:center;justify-content:center;gap:14px;flex-wrap:wrap;position:relative}

/* Footer */
.footer{background:var(--bg2);border-top:1px solid var(--border);padding:60px 0 30px}
.footer-top{display:grid;grid-template-columns:1fr 2fr;gap:60px;margin-bottom:50px}
.footer-brand p{font-size:13.5px;color:var(--text3);line-height:1.7;margin-top:12px;max-width:260px}
.footer-logo{display:flex;align-items:center;gap:8px;font-size:17px;font-weight:800;color:var(--text)}
.footer-links{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.footer-col h4{font-size:13px;font-weight:700;color:var(--text);text-transform:uppercase;letter-spacing:.6px;margin-bottom:14px}
.footer-col a{display:block;font-size:13.5px;color:var(--text3);margin-bottom:9px;transition:var(--tr)}
.footer-col a:hover{color:var(--text);text-decoration:none}
.footer-bottom{border-top:1px solid var(--border);padding-top:24px;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:10px}
.footer-bottom p{font-size:12.5px;color:var(--text3)}
.footer-bottom a{color:var(--accent3)}
.footer-tech{font-size:12px;color:var(--text3);opacity:.7}

/* ═══ APP LAYOUT ══════════════════════════════════════════════════ */
.app{display:flex;height:100vh;overflow:hidden}

/* Sidebar */
.sidebar{width:var(--sidebar-w);flex-shrink:0;background:var(--bg2);border-right:1px solid var(--border);display:flex;flex-direction:column;height:100vh;overflow:hidden;transition:transform var(--tr);z-index:100}
.sidebar-top{display:flex;align-items:center;justify-content:space-between;padding:14px 13px 10px}
.sb-brand{display:flex;align-items:center;gap:8px;font-size:15px;font-weight:700;color:var(--text);text-decoration:none}
.sb-brand:hover{text-decoration:none}
.sb-close{display:none}
.btn-new{display:flex;align-items:center;gap:7px;padding:9px 12px;background:linear-gradient(135deg,var(--accent),var(--accent2));color:white;border-radius:var(--radius-sm);font-size:13px;font-weight:600;margin:0 10px 10px;transition:var(--tr);width:calc(100% - 20px)}
.btn-new:hover{opacity:.9;transform:translateY(-1px)}
.sb-section-label{font-size:10px;font-weight:700;color:var(--text3);text-transform:uppercase;letter-spacing:.8px;padding:0 13px 6px}
.conv-list{flex:1;overflow-y:auto;padding:0 6px}
.conv-login-prompt{display:flex;flex-direction:column;align-items:center;gap:9px;padding:22px 14px;text-align:center;color:var(--text3)}
.conv-login-prompt p{font-size:12.5px;line-height:1.55}
.conv-item{display:flex;align-items:center;gap:8px;padding:9px 8px;border-radius:10px;cursor:pointer;transition:var(--tr)}
.conv-item:hover{background:var(--bg3)}
.conv-item.active{background:var(--bg4);border:1px solid var(--border2)}
.conv-icon{width:28px;height:28px;border-radius:7px;background:var(--bg4);display:flex;align-items:center;justify-content:center;flex-shrink:0;font-size:12px}
.conv-info{flex:1;min-width:0}
.conv-title{font-size:12.5px;font-weight:500;color:var(--text);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.conv-date{font-size:11px;color:var(--text3);margin-top:1px}
.conv-del{opacity:0;background:none;color:var(--text3);padding:3px;border-radius:5px;transition:var(--tr)}
.conv-item:hover .conv-del{opacity:1}
.conv-del:hover{background:rgba(239,68,68,.15);color:var(--danger)}
.conv-del svg{width:12px;height:12px}
.conv-skeleton{padding:6px}
.sk-line{height:34px;background:var(--bg3);border-radius:7px;margin-bottom:5px;animation:pulse 1.5s ease-in-out infinite}
.sk-line.short{width:70%;height:26px}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.5}}

/* Daily bar */
.daily-bar-wrap{padding:6px 13px 10px}
.daily-bar-label{display:flex;justify-content:space-between;font-size:11px;color:var(--text3);margin-bottom:5px}
.daily-bar-label strong{color:var(--accent3)}
.daily-bar{height:4px;background:var(--bg4);border-radius:99px;overflow:hidden}
.daily-bar-fill{height:100%;background:linear-gradient(90deg,var(--accent),var(--accent2));border-radius:99px;transition:width .4s ease}
.daily-bar-fill.warn{background:linear-gradient(90deg,#f59e0b,#ef4444)}

/* Sidebar footer */
.sb-footer{padding:9px;border-top:1px solid var(--border)}
.sb-user{display:flex;align-items:center;gap:8px;padding:7px 7px;border-radius:9px;transition:var(--tr)}
.sb-user:hover{background:var(--bg3)}
.sb-avatar{width:30px;height:30px;border-radius:50%;background:linear-gradient(135deg,var(--accent),var(--accent2));color:white;display:flex;align-items:center;justify-content:center;font-size:12.5px;font-weight:600;flex-shrink:0;overflow:hidden}
.sb-avatar img{width:100%;height:100%;object-fit:cover}
.sb-userinfo{min-width:0;flex:1}
.sb-uname{font-size:12px;font-weight:600;color:var(--text);display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.sb-urole{font-size:11px;color:var(--text3);text-transform:capitalize}
.sb-guest{padding:8px 7px}
.guest-info{display:flex;align-items:center;gap:6px;font-size:12px;color:var(--text3);margin-bottom:9px;font-weight:500}
.guest-badge{background:var(--bg4);color:var(--accent3);font-size:11px;font-weight:700;border-radius:100px;padding:2px 7px;margin-left:auto;border:1px solid var(--border2)}
.guest-footer-btns{display:flex;gap:6px}
.sb-overlay{display:none;position:fixed;inset:0;background:rgba(0,0,0,0.5);z-index:99;backdrop-filter:blur(2px)}

/* Chat main */
.chat-main{flex:1;display:flex;flex-direction:column;height:100vh;overflow:hidden;background:var(--bg)}
.chat-hdr{height:var(--hdr-h);display:flex;align-items:center;justify-content:space-between;padding:0 13px;background:var(--bg2);border-bottom:1px solid var(--border);flex-shrink:0;gap:9px}
.hdr-left{display:flex;align-items:center;gap:9px;min-width:0;flex:1}
.hdr-title{font-size:14px;font-weight:600;color:var(--text);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.hdr-right{display:flex;align-items:center;gap:6px;flex-shrink:0}
.model-pill{font-size:11px;font-weight:600;background:var(--bg3);border:1px solid var(--border2);color:var(--accent3);border-radius:100px;padding:3px 9px;white-space:nowrap}
.hdr-auth{display:flex;align-items:center;gap:7px}

/* Avatar dropdown */
.avatar-wrap{position:relative}
.avatar-btn{display:flex;align-items:center;gap:5px;background:none;padding:3px 5px;border-radius:var(--radius-sm);transition:var(--tr)}
.avatar-btn:hover{background:var(--bg3)}
.hdr-avatar{width:28px;height:28px;border-radius:50%;background:linear-gradient(135deg,var(--accent),var(--accent2));color:white;display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:600;overflow:hidden;flex-shrink:0}
.hdr-avatar img{width:100%;height:100%;object-fit:cover}
.avatar-menu{position:absolute;top:calc(100% + 8px);right:0;background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius);padding:6px;min-width:210px;box-shadow:var(--shadow-lg);z-index:200;animation:dropDown .15s ease}
@keyframes dropDown{from{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:none}}
.avatar-menu-user{display:flex;align-items:center;gap:9px;padding:9px 9px 11px}
.am-avatar{width:36px;height:36px;border-radius:50%;background:linear-gradient(135deg,var(--accent),var(--accent2));color:white;display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:600;overflow:hidden;flex-shrink:0}
.am-avatar img{width:100%;height:100%;object-fit:cover}
.am-name{font-size:13.5px;font-weight:600;color:var(--text)}
.am-email{font-size:11.5px;color:var(--text3);margin-top:1px}
.am-sep{border:none;border-top:1px solid var(--border);margin:2px 0}
.am-item{display:flex;align-items:center;gap:7px;width:100%;padding:8px 9px;border-radius:var(--radius-sm);font-size:13px;color:var(--text2);background:none;transition:var(--tr);text-align:left}
.am-item:hover{background:var(--bg3);color:var(--text)}
.am-item.danger{color:var(--danger)}
.am-item.danger:hover{background:rgba(239,68,68,.07)}

/* Messages */
.msgs-wrap{flex:1;overflow-y:auto;padding:0 15px;scroll-behavior:smooth}
.msgs-list{max-width:820px;margin:0 auto;padding:22px 0;display:flex;flex-direction:column;gap:2px}
.welcome{max-width:660px;margin:40px auto 0;text-align:center;padding:0 14px}
.welcome-icon{width:68px;height:68px;margin:0 auto 18px}
.welcome h2{font-size:clamp(19px,3vw,28px);font-weight:700;color:var(--text);margin-bottom:8px;letter-spacing:-.4px}
.welcome p{font-size:14px;color:var(--text3);margin-bottom:22px}
.suggestions{display:grid;grid-template-columns:repeat(auto-fill,minmax(190px,1fr));gap:7px;text-align:left;margin-bottom:18px}
.sug{background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius-sm);padding:10px 12px;font-size:13px;color:var(--text2);text-align:left;transition:var(--tr);line-height:1.4}
.sug:hover{background:var(--bg3);border-color:var(--border2);color:var(--text);transform:translateY(-2px);box-shadow:var(--shadow)}
.welcome-guest-notice{display:flex;align-items:center;gap:7px;background:rgba(99,102,241,0.07);border:1px solid var(--border2);border-radius:9px;padding:10px 14px;font-size:12.5px;color:var(--text3);justify-content:center;flex-wrap:wrap}
.welcome-guest-notice svg{flex-shrink:0;color:var(--accent3)}
.welcome-guest-notice strong{color:var(--accent3)}
.welcome-guest-notice a{color:var(--accent3);font-weight:500}
.msg{display:flex;gap:9px;padding:5px 0;animation:msgIn .2s ease}
@keyframes msgIn{from{opacity:0;transform:translateY(5px)}to{opacity:1;transform:none}}
.msg.user{flex-direction:row-reverse}
.msg-avatar{width:28px;height:28px;border-radius:50%;flex-shrink:0;display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:600;margin-top:2px;overflow:hidden}
.msg.user .msg-avatar{background:linear-gradient(135deg,var(--accent),var(--accent2));color:white}
.msg.assistant .msg-avatar{background:var(--bg3);border:1px solid var(--border2)}
.msg-body{max-width:76%}
.msg.user .msg-body{align-items:flex-end;display:flex;flex-direction:column}
.msg-bubble{padding:10px 14px;border-radius:var(--radius);font-size:14.5px;line-height:1.7;word-break:break-word}
.msg.user .msg-bubble{background:linear-gradient(135deg,var(--accent),var(--accent2));color:white;border-bottom-right-radius:4px}
.msg.assistant .msg-bubble{background:var(--bg2);border:1px solid var(--border);color:var(--text);border-bottom-left-radius:4px}
.msg-time{font-size:11px;color:var(--text3);margin-top:3px;padding:0 3px}
.msg.assistant .msg-bubble p{margin-bottom:9px}
.msg.assistant .msg-bubble p:last-child{margin-bottom:0}
.msg.assistant .msg-bubble strong{color:var(--text);font-weight:600}
.msg.assistant .msg-bubble code{background:var(--bg4);padding:2px 5px;border-radius:4px;font-size:13px;font-family:'Fira Code',monospace;color:var(--accent3)}
.msg.assistant .msg-bubble pre{background:var(--bg);border:1px solid var(--border);border-radius:10px;padding:13px;overflow-x:auto;margin:9px 0;position:relative}
.msg.assistant .msg-bubble pre code{background:none;padding:0;color:#e2e8f0;font-size:13px}
.msg.assistant .msg-bubble ul,.msg.assistant .msg-bubble ol{padding-left:18px;margin:7px 0}
.msg.assistant .msg-bubble li{margin-bottom:3px}
.msg.assistant .msg-bubble h1,.msg.assistant .msg-bubble h2,.msg.assistant .msg-bubble h3{margin:10px 0 5px;color:var(--text)}
.msg.assistant .msg-bubble blockquote{border-left:3px solid var(--accent);padding-left:11px;color:var(--text2);margin:7px 0}
.msg.assistant .msg-bubble table{width:100%;border-collapse:collapse;margin:8px 0;font-size:13px}
.msg.assistant .msg-bubble th{background:var(--bg4);padding:7px 10px;border:1px solid var(--border);color:var(--text);font-weight:600}
.msg.assistant .msg-bubble td{padding:7px 10px;border:1px solid var(--border);color:var(--text2)}
.msg.assistant .msg-bubble a{color:var(--accent3)}
.code-wrap{position:relative}
.copy-btn{position:absolute;top:7px;right:7px;background:var(--bg4);border:1px solid var(--border);color:var(--text3);border-radius:5px;padding:3px 7px;font-size:11px;transition:var(--tr)}
.copy-btn:hover{color:var(--text)}
.typing-indicator{display:flex;gap:4px;align-items:center;padding:11px 13px}
.typing-dot{width:6px;height:6px;background:var(--accent);border-radius:50%;animation:bounce 1.2s infinite}
.typing-dot:nth-child(2){animation-delay:.2s}
.typing-dot:nth-child(3){animation-delay:.4s}
@keyframes bounce{0%,60%,100%{transform:translateY(0)}30%{transform:translateY(-7px)}}

/* Banners */
.apikey-warn,.guest-warn,.daily-warn{display:flex;align-items:center;gap:8px;padding:10px 17px;background:rgba(245,158,11,.07);border-top:1px solid rgba(245,158,11,.18);font-size:13px;color:var(--text2);flex-shrink:0}
.apikey-warn svg,.guest-warn svg,.daily-warn svg{width:14px;height:14px;color:var(--warning);flex-shrink:0}
.apikey-warn a,.guest-warn a,.daily-warn a{color:var(--warning);font-weight:500}
.guest-warn strong,.daily-warn strong{color:var(--warning)}

/* Input */
.input-area{padding:10px 13px 13px;flex-shrink:0;background:var(--bg)}
.input-box{max-width:820px;margin:0 auto;background:var(--bg2);border:1.5px solid var(--border);border-radius:var(--radius);transition:var(--tr)}
.input-box:focus-within{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-glow)}
.input-box textarea{width:100%;background:transparent;border:none;padding:12px 14px 6px;font-size:15px;color:var(--text);resize:none;max-height:200px;overflow-y:auto;line-height:1.6}
.input-box textarea::placeholder{color:var(--text3)}
.input-footer{display:flex;align-items:center;justify-content:flex-end;padding:3px 9px 7px;gap:6px}
.upload-btn{display:flex;align-items:center;justify-content:center;width:30px;height:30px;border-radius:7px;color:var(--text3);cursor:pointer;transition:var(--tr);flex-shrink:0;margin-right:auto}
.upload-btn:hover{color:var(--accent3);background:var(--bg4)}
.upload-btn.has-file{color:var(--accent3);background:rgba(99,102,241,0.1)}
.char-cnt{font-size:11px;color:var(--text3)}
.send-btn{width:31px;height:31px;background:linear-gradient(135deg,var(--accent),var(--accent2));color:white;border-radius:7px;display:flex;align-items:center;justify-content:center;transition:var(--tr);flex-shrink:0}
.send-btn:hover:not(:disabled){opacity:.9;transform:scale(1.05)}
.send-btn:disabled{opacity:.3;cursor:not-allowed;transform:none}
.send-btn svg{width:13px;height:13px}
.send-btn.stop{background:linear-gradient(135deg,#ef4444,#dc2626);animation:none}
.send-btn.stop:hover{opacity:.9;transform:scale(1.05)}

/* Message action buttons */
.msg-actions{display:flex;gap:5px;margin-top:5px;opacity:0;transition:var(--tr)}
.msg:hover .msg-actions{opacity:1}
.msg-action-btn{background:var(--bg3);border:1px solid var(--border);color:var(--text3);border-radius:6px;padding:4px 9px;font-size:11.5px;display:flex;align-items:center;gap:4px;transition:var(--tr);cursor:pointer;font-family:inherit}
.msg-action-btn:hover{background:var(--bg4);color:var(--text);border-color:var(--border2)}
.msg-action-btn svg{width:12px;height:12px}

/* Editable title */
.hdr-title-wrap{display:flex;align-items:center;gap:6px;min-width:0;flex:1}
.hdr-title-edit{background:var(--bg3);border:1.5px solid var(--accent);border-radius:7px;padding:3px 9px;font-size:14px;font-weight:600;color:var(--text);outline:none;min-width:120px;max-width:300px}
.input-note{font-size:11.5px;color:var(--text3);text-align:center;margin-top:6px;max-width:820px;margin-left:auto;margin-right:auto}

/* ═══ BUTTONS ═══════════════════════════════════════════════════ */
.btn-primary{display:inline-flex;align-items:center;justify-content:center;gap:7px;padding:10px 20px;background:linear-gradient(135deg,var(--accent),var(--accent2));color:white;border-radius:var(--radius-sm);font-size:14px;font-weight:600;transition:var(--tr);position:relative}
.btn-primary:hover{opacity:.92}
.btn-primary:active{transform:scale(.98)}
.btn-primary:disabled{opacity:.6;cursor:not-allowed}
.btn-primary.full{width:100%}
.btn-primary.sm{padding:7px 14px;font-size:13px}
.btn-outline-sm{display:inline-flex;align-items:center;justify-content:center;padding:7px 14px;background:var(--bg3);border:1px solid var(--border);border-radius:var(--radius-sm);font-size:13px;font-weight:500;color:var(--text2);transition:var(--tr)}
.btn-outline-sm:hover{border-color:var(--border2);color:var(--text)}
.btn-danger{display:inline-flex;align-items:center;justify-content:center;gap:7px;padding:10px 17px;background:rgba(239,68,68,.1);color:var(--danger);border:1px solid rgba(239,68,68,.2);border-radius:var(--radius-sm);font-size:13.5px;font-weight:500;transition:var(--tr)}
.btn-danger:hover{background:rgba(239,68,68,.16)}
.btn-danger.w-full{width:100%;justify-content:center}
.btn-ghost{background:none;border:1.5px solid var(--border);border-radius:var(--radius-sm);padding:9px 17px;font-size:13.5px;color:var(--text2);font-weight:500;transition:var(--tr);width:100%;text-align:center}
.btn-ghost:hover{border-color:var(--border2);color:var(--text)}
.icon-btn{background:none;color:var(--text2);display:flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:7px;transition:var(--tr);flex-shrink:0}
.icon-btn:hover{background:var(--bg4);color:var(--text)}
.icon-btn svg{width:17px;height:17px}
.ml-auto{margin-left:auto}
.spinner{width:15px;height:15px;border:2px solid rgba(255,255,255,.3);border-top-color:white;border-radius:50%;animation:spin .6s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.link-btn{background:none;color:var(--warning);font-size:13px;font-weight:500;text-decoration:underline;padding:0}
.link-btn:hover{color:var(--accent3)}

/* ─── Limit Banner ─────────────────────────────────────────────── */
.limit-info-banner{background:var(--bg3);border:1px solid var(--border2);border-radius:10px;padding:11px 13px}
.limit-row{display:flex;align-items:center;justify-content:space-around;gap:5px}
.limit-item{display:flex;align-items:center;gap:7px;flex:1;justify-content:center;min-width:0}
.limit-item.highlight .limit-val strong{color:var(--accent3)}
.limit-item.highlight .limit-icon{background:rgba(99,102,241,0.15)}
.limit-icon{width:26px;height:26px;border-radius:7px;background:var(--bg4);display:flex;align-items:center;justify-content:center;font-size:12px;flex-shrink:0}
.limit-label{font-size:10px;color:var(--text3);font-weight:600;text-transform:uppercase;letter-spacing:.3px;margin-bottom:1px}
.limit-val{font-size:11.5px;color:var(--text2)}
.limit-val strong{color:var(--text);font-weight:700}
.limit-sep{width:1px;height:30px;background:var(--border);flex-shrink:0}

/* ═══ AUTH MODAL ═══════════════════════════════════════════════ */
.modal-bg{position:fixed;inset:0;background:rgba(0,0,0,0.6);backdrop-filter:blur(6px);z-index:200;display:flex;align-items:center;justify-content:center;padding:20px;animation:fadeIn .15s ease}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
.modal{background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius-lg);width:100%;max-height:90vh;overflow-y:auto;animation:slideUp .2s ease;position:relative}
@keyframes slideUp{from{opacity:0;transform:translateY(16px)}to{opacity:1;transform:none}}
.modal-x{position:absolute;top:13px;right:13px;z-index:1}
.auth-modal-box{max-width:410px;padding:30px 26px 26px}
.auth-screen{display:flex;flex-direction:column;gap:14px}
.modal-brand{text-align:center;margin-bottom:2px}
.modal-brand-icon{font-size:34px;margin-bottom:8px}
.modal-brand h3{font-size:19px;font-weight:700;color:var(--text);margin-bottom:3px}
.modal-brand p{font-size:12.5px;color:var(--text3)}
.btn-oauth{width:100%;display:flex;align-items:center;justify-content:center;gap:8px;padding:10px;border-radius:var(--radius-sm);font-size:13px;font-weight:500;transition:var(--tr);margin-bottom:7px}
.btn-google{background:var(--bg3);border:1px solid var(--border);color:var(--text)}
.btn-google:hover{background:var(--bg4);border-color:var(--border2)}
.btn-github{background:var(--bg3);border:1px solid var(--border);color:var(--text)}
.btn-github:hover{background:var(--bg4);border-color:var(--border2)}
.divider-text{display:flex;align-items:center;gap:9px;margin:3px 0}
.divider-text::before,.divider-text::after{content:'';flex:1;height:1px;background:var(--border)}
.divider-text span{font-size:11.5px;color:var(--text3)}
.form-group{display:flex;flex-direction:column;gap:5px}
.form-group label{font-size:12px;font-weight:500;color:var(--text2)}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.input-wrap{position:relative;display:flex;align-items:center}
.inp-icon{position:absolute;left:10px;width:14px;height:14px;color:var(--text3);flex-shrink:0;pointer-events:none}
.input-wrap input,.form-group input,.form-group select,.form-group textarea{width:100%;background:var(--bg3);border:1.5px solid var(--border);border-radius:var(--radius-sm);padding:9px 11px;font-size:13.5px;color:var(--text);transition:var(--tr)}
.input-wrap input{padding-left:34px;padding-right:34px}
.input-wrap input:focus,.form-group input:focus,.form-group select:focus,.form-group textarea:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-glow)}
.form-group select{appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%236b6b88' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 10px center;cursor:pointer}
.eye-btn{position:absolute;right:8px;background:none;color:var(--text3);padding:3px;display:flex;align-items:center}
.eye-btn:hover{color:var(--text)}
.eye-btn svg{width:14px;height:14px}
.form-err{font-size:12px;color:var(--danger);min-height:16px}
.form-msg{font-size:12px;min-height:16px}
.form-msg.success{color:var(--success)}
.form-msg.error{color:var(--danger)}
.form-group small{font-size:11px;color:var(--text3);line-height:1.5}
.auth-switch{font-size:12.5px;color:var(--text3);text-align:center}
.auth-switch a{color:var(--accent3);font-weight:500}
.not-verified-box{display:flex;align-items:center;gap:7px;background:rgba(245,158,11,.08);border:1px solid rgba(245,158,11,.25);border-radius:7px;padding:9px 11px;font-size:12.5px;color:var(--text2)}
.not-verified-box svg{flex-shrink:0;color:var(--warning)}

/* Verify screen */
.verify-screen{text-align:center}
.verify-icon{font-size:46px;margin-bottom:10px;display:block;animation:bounceIn .4s ease}
@keyframes bounceIn{0%{transform:scale(.5);opacity:0}70%{transform:scale(1.1)}100%{transform:scale(1);opacity:1}}
.verify-screen h3{font-size:19px;font-weight:700;color:var(--text);margin-bottom:7px}
.verify-screen p{font-size:13px;color:var(--text2);line-height:1.65}
.verify-email-badge{background:var(--bg4);border:1px solid var(--border2);border-radius:8px;padding:8px 14px;font-size:13.5px;font-weight:600;color:var(--accent3);margin:8px 0;word-break:break-all}
.verify-hint{font-size:12px;color:var(--text3);margin-bottom:14px}
.verify-hint strong{color:var(--text2)}
.verify-actions{display:flex;flex-direction:column;gap:8px;margin-bottom:12px}
.verify-tips{background:rgba(99,102,241,.07);border:1px solid var(--border2);border-radius:8px;padding:10px 13px;font-size:12px;color:var(--text3);text-align:left}
.verify-tips strong{color:var(--text2)}

/* ═══ SETTINGS MODAL ═════════════════════════════════════════════ */
.modal-hdr{display:flex;align-items:center;justify-content:space-between;padding:19px 21px 0}
.modal-hdr h3{font-size:16px;font-weight:700;color:var(--text)}
.modal-tabs{display:flex;gap:3px;padding:13px 17px 0}
.modal-tab{padding:7px 13px;border-radius:7px;font-size:13px;font-weight:500;color:var(--text3);background:transparent;transition:var(--tr)}
.modal-tab.active{background:var(--bg4);color:var(--text)}
.modal-body{padding:17px 21px 21px}
.acct-card{display:flex;align-items:center;gap:13px;padding:13px;background:var(--bg3);border-radius:var(--radius-sm);margin-bottom:17px}
.acct-avatar{width:46px;height:46px;border-radius:50%;background:linear-gradient(135deg,var(--accent),var(--accent2));color:white;display:flex;align-items:center;justify-content:center;font-size:17px;font-weight:600;overflow:hidden;flex-shrink:0}
.acct-avatar img{width:100%;height:100%;object-fit:cover}
.acct-name{font-size:14.5px;font-weight:600;color:var(--text);margin-bottom:2px}
.acct-email{font-size:12px;color:var(--text3);margin-bottom:6px}
.acct-badges{display:flex;gap:5px;flex-wrap:wrap}
.badge{font-size:11px;font-weight:600;padding:2px 7px;border-radius:100px;background:var(--bg4);color:var(--text2);text-transform:capitalize}
.provider-badge{background:rgba(99,102,241,.12);color:var(--accent3);border:1px solid var(--border2)}
.verified-badge{background:rgba(16,185,129,.1);color:#10b981;border:1px solid rgba(16,185,129,.2)}
.sep{border:none;border-top:1px solid var(--border);margin:16px 0}
h4{font-size:13px;font-weight:600;color:var(--text);margin-bottom:11px}

/* ═══ TOAST ═══════════════════════════════════════════════════════ */
#toasts{position:fixed;bottom:20px;right:20px;z-index:9999;display:flex;flex-direction:column;gap:7px;align-items:flex-end}
.toast{background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius-sm);padding:10px 14px;font-size:13px;color:var(--text);box-shadow:var(--shadow);animation:toastIn .25s ease;display:flex;align-items:center;gap:7px;max-width:310px}
.toast.success{border-left:3px solid var(--success)}
.toast.error{border-left:3px solid var(--danger)}
.toast.info{border-left:3px solid var(--accent3)}
@keyframes toastIn{from{opacity:0;transform:translateX(14px)}to{opacity:1;transform:none}}
@keyframes toastOut{to{opacity:0;transform:translateX(14px)}}

/* ═══ RESPONSIVE ═══════════════════════════════════════════════════ */
@media(max-width:900px){
  .footer-top{grid-template-columns:1fr}
  .footer-links{grid-template-columns:repeat(2,1fr)}
  .step-arrow{display:none}
  .steps-grid{gap:14px}
  .step-card{max-width:100%;width:100%}
}
@media(max-width:768px){
  .nav-links{display:none}
  .sidebar{position:fixed;left:0;top:0;bottom:0;transform:translateX(-100%);box-shadow:var(--shadow-lg)}
  .sidebar.open{transform:translateX(0)}
  .sb-close{display:flex}
  .sb-overlay.open{display:block}
  .msg-body{max-width:88%}
  .suggestions{grid-template-columns:1fr 1fr}
  .form-row{grid-template-columns:1fr}
  .hero-preview{display:none}
  .pricing-card.featured{transform:none}
}
@media(max-width:480px){
  .suggestions{grid-template-columns:1fr}
  .msgs-wrap{padding:0 8px}
  #toasts{bottom:12px;right:12px;left:12px;align-items:stretch}
  .toast{max-width:100%}
  .auth-modal-box{padding:22px 16px 18px}
  .modal{border-radius:var(--radius)}
  .hero-cta{flex-direction:column}
  .stats-grid{gap:10px}
  .stat{padding:8px 20px}
  .stat-div{display:none}
  .footer-links{grid-template-columns:1fr}
  .cta-btns{flex-direction:column}
  .nav-actions .btn-outline-sm{display:none}
}