/* Z-H-H AI — Premium Theme */
:root{
  --bg:#070912;
  --bg-2:#0b0f1d;
  --surface:rgba(255,255,255,0.04);
  --surface-2:rgba(255,255,255,0.06);
  --border:rgba(255,255,255,0.09);
  --border-strong:rgba(255,255,255,0.16);
  --text:#eef1ff;
  --muted:#9aa3bf;
  --primary:#7c3aed;
  --primary-2:#06b6d4;
  --accent:#22d3ee;
  --gold:#f5c46b;
  --grad:linear-gradient(135deg,#7c3aed 0%,#4f46e5 40%,#06b6d4 100%);
  --grad-soft:linear-gradient(135deg,rgba(124,58,237,.25),rgba(6,182,212,.18));
  --shadow-elev: 0 20px 60px -20px rgba(124,58,237,.45), 0 8px 30px -10px rgba(6,182,212,.25);
  --radius:18px;
  --radius-sm:12px;
}

*{box-sizing:border-box}
html,body{margin:0;padding:0;background:var(--bg);color:var(--text);font-family:'Inter',system-ui,-apple-system,Segoe UI,sans-serif;overflow-x:hidden}
body{min-height:100vh;background:radial-gradient(1200px 700px at 80% -10%, rgba(124,58,237,.18), transparent 60%),radial-gradient(900px 600px at -10% 20%, rgba(6,182,212,.14), transparent 60%),var(--bg)}
button{font-family:inherit;cursor:pointer}
a{color:inherit}

/* ===== Loader ===== */
.loader{position:fixed;inset:0;background:radial-gradient(800px 600px at 50% 40%, #131837, #05060f 70%);z-index:9999;display:flex;align-items:center;justify-content:center;transition:opacity .6s ease,visibility .6s}
.loader.hide{opacity:0;visibility:hidden}
.loader-inner{display:flex;flex-direction:column;align-items:center;gap:22px}
.orb{position:relative;width:130px;height:130px;display:flex;align-items:center;justify-content:center}
.orb-ring{position:absolute;inset:0;border-radius:50%;border:2px solid transparent;border-top-color:#7c3aed;border-right-color:#06b6d4;animation:spin 1.6s linear infinite}
.orb-ring:nth-child(2){inset:14px;border-top-color:#22d3ee;border-right-color:#a855f7;animation-duration:2.2s;animation-direction:reverse}
.orb-ring:nth-child(3){inset:28px;border-top-color:#f5c46b;border-right-color:#7c3aed;animation-duration:1.2s}
.orb-core{position:absolute;width:60px;height:60px;border-radius:50%;background:var(--grad);display:flex;align-items:center;justify-content:center;font-family:'Sora';font-weight:800;font-size:28px;color:#fff;box-shadow:0 0 40px rgba(124,58,237,.6),inset 0 0 20px rgba(255,255,255,.2)}
@keyframes spin{to{transform:rotate(360deg)}}
.loader-brand{font-family:'Sora';font-size:32px;font-weight:800;letter-spacing:1px;background:linear-gradient(90deg,#fff,#a78bfa,#67e8f9);-webkit-background-clip:text;background-clip:text;color:transparent}
.loader-brand span{font-weight:500;color:var(--muted);-webkit-text-fill-color:var(--muted)}
.loader-tag{color:var(--muted);font-size:13px;letter-spacing:.4px}
.loader-bar{width:220px;height:3px;background:rgba(255,255,255,.08);border-radius:99px;overflow:hidden}
.loader-bar span{display:block;height:100%;width:40%;background:var(--grad);border-radius:99px;animation:bar 1.4s ease-in-out infinite}
@keyframes bar{0%{margin-left:-40%}100%{margin-left:100%}}

/* ===== Background FX ===== */
.bg-fx{position:fixed;inset:0;pointer-events:none;z-index:0;overflow:hidden}
.blob{position:absolute;border-radius:50%;filter:blur(80px);opacity:.55;mix-blend-mode:screen}
.b1{width:520px;height:520px;background:#7c3aed;top:-120px;left:-120px;animation:float 14s ease-in-out infinite}
.b2{width:460px;height:460px;background:#06b6d4;bottom:-140px;right:-100px;animation:float 16s ease-in-out infinite reverse}
.b3{width:300px;height:300px;background:#a855f7;top:40%;right:30%;animation:float 18s ease-in-out infinite}
@keyframes float{0%,100%{transform:translate(0,0) scale(1)}50%{transform:translate(40px,-30px) scale(1.08)}}
.grid{position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);background-size:46px 46px;mask-image:radial-gradient(ellipse at center,#000 30%,transparent 75%)}

/* ===== App ===== */
.app{position:relative;z-index:1;min-height:100vh;display:flex;flex-direction:column;max-width:1100px;margin:0 auto;padding:20px 22px 0}
.topbar{display:flex;align-items:center;justify-content:space-between;padding:10px 6px 18px;border-bottom:1px solid var(--border)}
.brand{display:flex;align-items:center;gap:12px}
.logo{width:44px;height:44px;border-radius:13px;background:var(--grad);display:flex;align-items:center;justify-content:center;font-family:'Sora';font-weight:800;color:#fff;font-size:20px;box-shadow:var(--shadow-elev);position:relative}
.logo::after{content:"";position:absolute;inset:0;border-radius:13px;background:linear-gradient(180deg,rgba(255,255,255,.25),transparent 50%);pointer-events:none}
.brand-name{font-family:'Sora';font-weight:700;font-size:20px;letter-spacing:.5px}
.brand-name em{font-style:normal;background:linear-gradient(90deg,#a78bfa,#67e8f9);-webkit-background-clip:text;background-clip:text;color:transparent;font-weight:800}
.brand-sub{font-size:11.5px;color:var(--muted);letter-spacing:.4px;text-transform:uppercase}
.actions{display:flex;gap:10px}
.ghost-btn{display:inline-flex;align-items:center;gap:8px;background:var(--surface);color:var(--text);border:1px solid var(--border);padding:9px 14px;border-radius:11px;font-size:13.5px;font-weight:500;transition:.2s}
.ghost-btn:hover{background:var(--surface-2);border-color:var(--border-strong);transform:translateY(-1px)}

/* ===== Welcome ===== */
.chat-wrap{flex:1;padding:30px 0 20px;display:flex;flex-direction:column}
.welcome{position:relative;text-align:center;padding:40px 10px 30px}
.halo{position:absolute;inset:0;background:radial-gradient(400px 200px at 50% 30%, rgba(124,58,237,.25), transparent 70%);pointer-events:none}
.title{font-family:'Sora';font-size:clamp(34px,5vw,52px);font-weight:800;margin:0 0 14px;letter-spacing:-1px}
.grad{background:linear-gradient(90deg,#a78bfa,#22d3ee,#f5c46b);-webkit-background-clip:text;background-clip:text;color:transparent}
.subtitle{color:var(--muted);font-size:16px;max-width:600px;margin:0 auto 28px;line-height:1.6}
.subtitle strong{color:var(--text)}
.suggestions{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:12px;max-width:760px;margin:0 auto}
.chip{background:var(--surface);border:1px solid var(--border);color:var(--text);padding:14px 16px;border-radius:14px;font-size:14px;text-align:left;transition:.2s;backdrop-filter:blur(10px)}
.chip:hover{background:var(--grad-soft);border-color:rgba(124,58,237,.5);transform:translateY(-2px);box-shadow:0 10px 30px -10px rgba(124,58,237,.3)}

/* ===== Messages ===== */
.messages{display:none;flex-direction:column;gap:18px;padding:10px 4px 20px;animation:fadeIn .4s ease}
.messages.active{display:flex}
@keyframes fadeIn{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
.msg{display:flex;gap:12px;align-items:flex-start;animation:slideIn .35s ease}
@keyframes slideIn{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}
.msg .avatar{width:38px;height:38px;border-radius:11px;display:flex;align-items:center;justify-content:center;font-weight:700;font-family:'Sora';flex-shrink:0;font-size:14px}
.msg.user .avatar{background:linear-gradient(135deg,#1f2547,#2d335f);color:#cdd5ff;border:1px solid var(--border)}
.msg.ai .avatar{background:var(--grad);color:#fff;box-shadow:0 6px 20px -6px rgba(124,58,237,.6)}
.bubble{background:var(--surface);border:1px solid var(--border);padding:14px 16px;border-radius:14px;max-width:78%;line-height:1.65;font-size:15px;white-space:pre-wrap;word-wrap:break-word;backdrop-filter:blur(10px)}
.msg.user .bubble{background:linear-gradient(135deg,rgba(124,58,237,.18),rgba(6,182,212,.12));border-color:rgba(124,58,237,.35)}
.msg.ai .bubble{background:var(--surface-2)}
.bubble.error{border-color:rgba(255,90,90,.5);color:#ffb3b3;background:rgba(255,60,60,.08)}

/* Typing dots */
.typing{display:inline-flex;gap:5px;align-items:center;padding:4px 0}
.typing span{width:8px;height:8px;border-radius:50%;background:var(--accent);animation:tdot 1.2s infinite ease-in-out}
.typing span:nth-child(2){animation-delay:.15s}
.typing span:nth-child(3){animation-delay:.3s}
@keyframes tdot{0%,80%,100%{transform:scale(.6);opacity:.4}40%{transform:scale(1);opacity:1}}

/* ===== Composer ===== */
.composer-wrap{position:sticky;bottom:0;padding:14px 0 18px;background:linear-gradient(180deg,transparent,var(--bg) 30%)}
.composer{display:flex;align-items:flex-end;gap:10px;background:var(--surface);border:1px solid var(--border);border-radius:18px;padding:10px;backdrop-filter:blur(20px);box-shadow:var(--shadow-elev);transition:border-color .2s}
.composer:focus-within{border-color:rgba(124,58,237,.55)}
.composer textarea{flex:1;background:transparent;border:0;outline:0;color:var(--text);font-size:15px;resize:none;font-family:inherit;padding:10px 8px;max-height:180px;line-height:1.5}
.composer textarea::placeholder{color:var(--muted)}
.icon-btn{background:transparent;border:0;color:var(--muted);width:38px;height:38px;border-radius:10px;display:flex;align-items:center;justify-content:center;transition:.2s}
.icon-btn:hover{background:var(--surface-2);color:var(--text)}
.send-btn{background:var(--grad);color:#fff;border:0;width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;box-shadow:0 8px 24px -8px rgba(124,58,237,.7);transition:.2s}
.send-btn:hover{transform:translateY(-1px) scale(1.04)}
.send-btn:disabled{opacity:.5;cursor:not-allowed;transform:none}
.footer-line{text-align:center;color:var(--muted);font-size:12px;margin-top:10px;letter-spacing:.3px}
.footer-line strong{color:var(--text)}

/* ===== Modal ===== */
.modal{position:fixed;inset:0;background:rgba(5,7,18,.7);backdrop-filter:blur(8px);display:none;align-items:center;justify-content:center;z-index:200;padding:20px;animation:fadeIn .25s}
.modal.open{display:flex}
.modal-card{position:relative;background:linear-gradient(160deg,#141a35,#0d1124);border:1px solid var(--border-strong);border-radius:22px;padding:34px 28px 30px;max-width:420px;width:100%;text-align:center;box-shadow:var(--shadow-elev);animation:popIn .3s ease}
@keyframes popIn{from{opacity:0;transform:scale(.95)}to{opacity:1;transform:scale(1)}}
.modal-close{position:absolute;top:12px;right:14px;background:transparent;border:0;color:var(--muted);font-size:26px;line-height:1;width:34px;height:34px;border-radius:8px;transition:.2s}
.modal-close:hover{background:var(--surface-2);color:var(--text)}
.dev-avatar{width:84px;height:84px;border-radius:50%;background:var(--grad);color:#fff;font-family:'Sora';font-weight:800;font-size:30px;display:flex;align-items:center;justify-content:center;margin:0 auto 16px;box-shadow:0 12px 30px -8px rgba(124,58,237,.6)}
.modal-card h2{font-family:'Sora';margin:6px 0 4px;font-size:24px}
.dev-role{color:var(--muted);font-size:14px;margin:0 0 14px}
.dev-role strong{background:linear-gradient(90deg,#a78bfa,#67e8f9);-webkit-background-clip:text;background-clip:text;color:transparent;font-weight:700}
.dev-bio{color:var(--muted);font-size:14px;line-height:1.6;margin:0 0 22px}
.wa-btn{display:inline-flex;align-items:center;gap:10px;background:linear-gradient(135deg,#25D366,#128C7E);color:#fff;text-decoration:none;padding:13px 22px;border-radius:13px;font-weight:600;font-size:14.5px;transition:.2s;box-shadow:0 10px 24px -8px rgba(37,211,102,.55)}
.wa-btn:hover{transform:translateY(-2px);box-shadow:0 14px 30px -8px rgba(37,211,102,.7)}

/* ===== Responsive ===== */
@media (max-width:640px){
  .app{padding:14px 14px 0}
  .ghost-btn span{display:none}
  .ghost-btn{padding:9px 11px}
  .brand-sub{display:none}
  .bubble{max-width:85%;font-size:14.5px}
  .title{font-size:34px}
  .subtitle{font-size:14.5px}
}

/* RTL support */
.bubble[dir="rtl"]{text-align:right}

/* Scrollbar */
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-thumb{background:rgba(255,255,255,.12);border-radius:99px}
::-webkit-scrollbar-thumb:hover{background:rgba(255,255,255,.2)}
::-webkit-scrollbar-track{background:transparent}