:root{
  --bg:#0c0e14;--surface:#13161f;--surface2:#1a1d28;
  --border:#252a3d;--text:#e8eaf6;--text2:#8890b8;--text3:#4a5070;
  --accent:#4c6ef5;--accent2:#748ffc;--danger:#f5544c;--good:#3ecf8e;--warn:#f5c542;
}
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html,body{height:100%}
body{font-family:'Plus Jakarta Sans',sans-serif;background:var(--bg);color:var(--text)}
a{color:var(--accent2)}
button{font-family:inherit}
::-webkit-scrollbar{width:8px}
::-webkit-scrollbar-thumb{background:var(--surface2);border-radius:8px}

/* ---------- Auth ekranı ---------- */
#authScreen{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:20px;position:relative}
.auth-card{width:100%;max-width:400px;background:var(--surface);border:1px solid var(--border);border-radius:18px;padding:34px;position:relative}
.auth-back{position:absolute;top:16px;left:18px;font-size:.78rem;color:var(--text2);text-decoration:none}
.auth-back:hover{color:var(--text)}
.auth-logo{width:52px;height:52px;border-radius:14px;background:url('../img/logo.png') center/cover;margin:0 auto 16px}
.auth-title{text-align:center;font-weight:800;font-size:1.2rem;margin-bottom:4px}
.auth-sub{text-align:center;color:var(--text2);font-size:.85rem;margin-bottom:24px}
.tabs{display:flex;background:var(--surface2);border-radius:10px;padding:4px;margin-bottom:22px}
.tabs button{flex:1;padding:9px;border:none;background:transparent;color:var(--text2);border-radius:8px;font-weight:700;font-size:.85rem;cursor:pointer}
.tabs button.active{background:linear-gradient(135deg,var(--accent),var(--accent2));color:#fff}
.field{margin-bottom:14px}
.field label{font-size:.8rem;color:var(--text2);display:block;margin-bottom:6px}
.field input,.field textarea,.field select{width:100%;padding:11px 12px;border-radius:10px;border:1px solid var(--border);background:#0f1119;color:var(--text);font-size:.9rem}
.field input:focus,.field textarea:focus,.field select:focus{outline:none;border-color:var(--accent)}
.checkline{display:flex;gap:8px;align-items:flex-start;font-size:.78rem;color:var(--text2);margin:14px 0}
.checkline a{color:var(--accent2)}
.btn-primary{width:100%;padding:12px;border:none;border-radius:10px;background:linear-gradient(135deg,var(--accent),var(--accent2));color:#fff;font-weight:700;font-size:.9rem;cursor:pointer}
.btn-primary:disabled{opacity:.55;cursor:not-allowed}
.link-btn{background:none;border:none;color:var(--accent2);font-size:.8rem;cursor:pointer;padding:0}
.form-msg{padding:10px 12px;border-radius:10px;font-size:.83rem;margin-top:14px}
.form-msg.err{background:rgba(245,84,76,.12);border:1px solid rgba(245,84,76,.4);color:#ffb3af}
.form-msg.ok{background:rgba(62,207,142,.12);border:1px solid rgba(62,207,142,.4);color:#8fe8c4}

/* ---------- Uygulama düzeni ---------- */
#appScreen{display:none;height:100vh;overflow:hidden}
.app-shell{display:flex;height:100%}
.sidebar{width:270px;flex:0 0 270px;background:var(--surface);border-right:1px solid var(--border);display:flex;flex-direction:column}
.sidebar-top{padding:16px;border-bottom:1px solid var(--border)}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;margin-bottom:14px}
.sidebar-top-row{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-bottom:14px}
.sidebar-top-row .brand{margin-bottom:0}
.brand .logo{width:30px;height:30px;border-radius:8px;background:url('../img/logo.png') center/cover}
.new-chat-btn{width:100%;padding:10px;border-radius:10px;border:1px solid var(--border);background:var(--surface2);color:var(--text);font-weight:700;font-size:.85rem;cursor:pointer}
.session-list{flex:1;overflow-y:auto;padding:8px}
.session-item{padding:10px 12px;border-radius:10px;font-size:.83rem;color:var(--text2);cursor:pointer;margin-bottom:2px;display:flex;justify-content:space-between;align-items:center;gap:6px}
.session-item:hover{background:var(--surface2)}
.session-item.active{background:var(--surface2);color:var(--text)}
.session-item .t{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;flex:1}
.session-item .del{opacity:0;font-size:.75rem;color:var(--text3)}
.session-item:hover .del{opacity:1}
.sidebar-bottom{padding:12px;border-top:1px solid var(--border);display:flex;gap:8px;align-items:center}
.user-chip{flex:1;font-size:.8rem;color:var(--text2);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.icon-btn{width:34px;height:34px;border-radius:9px;border:1px solid var(--border);background:var(--surface2);color:var(--text2);cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:.95rem;text-decoration:none}
.icon-btn:hover{color:var(--text)}
.badge-vip{font-size:.65rem;background:linear-gradient(135deg,var(--warn),#f5a742);color:#1a1200;padding:2px 6px;border-radius:6px;font-weight:800;margin-left:4px}

.main{flex:1;display:flex;flex-direction:column;min-width:0}
.chat-header{padding:14px 22px;border-bottom:1px solid var(--border);font-weight:700;font-size:.95rem;display:flex;justify-content:space-between;align-items:center}

.whatsapp-banner{display:flex;align-items:center;gap:10px;background:linear-gradient(135deg,#1f9e56,#25D366);padding:10px 16px;color:#fff}
.whatsapp-banner a{flex:1;color:#fff;text-decoration:none;font-weight:700;font-size:.85rem}
.whatsapp-banner button{background:rgba(255,255,255,.2);border:none;color:#fff;width:26px;height:26px;border-radius:8px;cursor:pointer;flex:0 0 auto}

/* ---------- Hızlı Araçlar (prompt chip'leri) ---------- */
.prompt-bar{display:flex;gap:8px;padding:12px 16px 0;overflow-x:auto;flex:0 0 auto}
.prompt-bar::-webkit-scrollbar{height:0}
.prompt-chip{flex:0 0 auto;background:var(--surface);border:1px solid var(--border);color:var(--text2);padding:8px 14px;border-radius:20px;font-size:.8rem;cursor:pointer;white-space:nowrap;user-select:none}
.prompt-chip:hover{background:var(--surface2);color:var(--text)}

.chat-area{flex:1;overflow-y:auto;padding:24px 16px;display:flex;flex-direction:column;gap:16px}
.chat-area-inner{max-width:820px;margin:0 auto;width:100%;display:flex;flex-direction:column;gap:16px}
.empty-state{margin:auto;text-align:center;color:var(--text3);padding:40px 20px}
.empty-state .big-logo{width:64px;height:64px;border-radius:16px;margin:0 auto 16px;background:url('../img/logo.png') center/cover;background-color:transparent}
.empty-state h2{color:var(--text);font-size:1.2rem;margin-bottom:6px}
.welcome-chips{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;margin-top:18px}
.welcome-chip{background:var(--surface);border:1px solid var(--border);color:var(--text2);padding:8px 14px;border-radius:20px;font-size:.8rem;cursor:pointer}
.welcome-chip:hover{background:var(--surface2);color:var(--text)}

/* ---------- Doküman ekleme (sohbette dosya analiz) ---------- */
#docChipWrap{max-width:820px;margin:0 auto 10px;display:flex;flex-wrap:wrap;gap:8px}
.doc-chip{display:inline-flex;align-items:center;gap:8px;background:var(--surface2);border:1px solid var(--border);color:var(--text2);padding:6px 12px;border-radius:20px;font-size:.78rem}
.doc-chip .x{cursor:pointer;color:var(--text3);font-weight:700}
.doc-chip .x:hover{color:var(--danger)}
.round-btn.attach{background:var(--surface2);color:var(--text2);border:1px solid var(--border)}
.round-btn.attach:hover{color:var(--text)}
.round-btn.attach:disabled{opacity:.5;cursor:not-allowed}

.msg{display:flex;gap:10px;animation:fadeIn .25s ease}
@keyframes fadeIn{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}
.msg.user{flex-direction:row-reverse}
.avatar{flex:0 0 32px;width:32px;height:32px;border-radius:9px;display:flex;align-items:center;justify-content:center;font-size:.9rem}
.avatar.avatar-logo{background:url('../img/logo.png') center/cover}
.msg.user .avatar{background:var(--surface2);border:1px solid var(--border)}
.bubble{padding:12px 16px;border-radius:14px;font-size:.94rem;line-height:1.6;white-space:pre-wrap;word-wrap:break-word;max-width:min(640px,78%)}
.bubble.has-code{max-width:min(760px,94%)}
.msg.assistant .bubble{background:var(--surface);border:1px solid var(--border);border-top-left-radius:4px}
.msg.user .bubble{background:var(--accent);color:#fff;border-top-right-radius:4px}
.msg.error .bubble{background:rgba(245,84,76,.12);border:1px solid rgba(245,84,76,.4);color:#ffb3af}

/* ---------- Mesaj içi basit markdown (liste/başlık/satır içi kod) ---------- */
.msg-list{margin:6px 0 6px 22px}
.msg-list li{margin-bottom:4px}
.msg-heading{font-weight:800;margin:10px 0 4px;font-size:1.02em}
.inline-code{background:rgba(0,0,0,.22);border:1px solid rgba(255,255,255,.08);padding:1px 6px;border-radius:6px;font-family:'SFMono-Regular',Consolas,'Liberation Mono',Menlo,monospace;font-size:.85em}
.msg.user .inline-code{background:rgba(0,0,0,.18);border-color:rgba(255,255,255,.25)}

/* ---------- Kod blokları: kopyala / indir / (HTML için) önizle ---------- */
.code-block{background:#0a0c12;border:1px solid var(--border);border-radius:12px;margin:10px 0;overflow:hidden;font-size:.85rem;white-space:normal}
.code-block-head{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:8px 10px 8px 14px;background:var(--surface2);border-bottom:1px solid var(--border);flex-wrap:wrap}
.code-block-lang{font-size:.68rem;font-weight:800;letter-spacing:.05em;color:var(--text2)}
.code-block-actions{display:flex;gap:6px;flex-wrap:wrap}
.code-btn{background:var(--surface);border:1px solid var(--border);color:var(--text2);font-size:.72rem;font-weight:700;padding:5px 10px;border-radius:8px;cursor:pointer;white-space:nowrap;transition:color .15s,border-color .15s}
.code-btn:hover{color:var(--text);border-color:var(--accent)}
.code-btn:disabled{opacity:.75;cursor:default}
.code-pre{padding:14px;overflow-x:auto;max-width:100%;white-space:pre;margin:0}
.code-content{font-family:'SFMono-Regular',Consolas,'Liberation Mono',Menlo,monospace;font-size:.83rem;line-height:1.55;color:#d8dcf0;white-space:pre}
.code-preview-wrap{border-top:1px solid var(--border);background:#fff}
.code-preview-frame{width:100%;height:340px;border:none;display:block;background:#fff}
.typing{display:flex;gap:4px;padding:4px 2px}
.typing span{width:6px;height:6px;border-radius:50%;background:var(--text3);animation:bounce 1.2s infinite ease-in-out}
.typing span:nth-child(2){animation-delay:.15s}
.typing span:nth-child(3){animation-delay:.3s}
@keyframes bounce{0%,60%,100%{transform:translateY(0);opacity:.5}30%{transform:translateY(-5px);opacity:1}}

.composer-wrap{border-top:1px solid var(--border);padding:14px 16px calc(14px + env(safe-area-inset-bottom))}
.composer{max-width:820px;margin:0 auto;display:flex;gap:8px;align-items:flex-end;background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:8px 8px 8px 16px}
.composer:focus-within{border-color:var(--accent)}
.composer textarea{flex:1;background:transparent;border:none;outline:none;resize:none;color:var(--text);font-family:inherit;font-size:.95rem;line-height:1.5;max-height:150px;padding:8px 0}
.composer textarea::placeholder{color:var(--text3)}
.round-btn{flex:0 0 auto;width:42px;height:42px;border-radius:12px;border:none;cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:1.05rem}
.round-btn.send{background:linear-gradient(135deg,var(--accent),var(--accent2));color:#fff}
.round-btn.send:disabled{opacity:.4;cursor:not-allowed}
.round-btn.mic{background:var(--surface2);color:var(--text2);border:1px solid var(--border)}
.round-btn.mic.listening{background:rgba(245,84,76,.18);color:var(--danger);animation:pulse 1.2s infinite}
.round-btn.mic.speaking{background:rgba(76,110,245,.18);color:var(--accent2);animation:pulse-accent 1.2s infinite}
@keyframes pulse{0%,100%{box-shadow:0 0 0 0 rgba(245,84,76,.4)}50%{box-shadow:0 0 0 8px rgba(245,84,76,0)}}
@keyframes pulse-accent{0%,100%{box-shadow:0 0 0 0 rgba(76,110,245,.4)}50%{box-shadow:0 0 0 8px rgba(76,110,245,0)}}
.composer-hint{max-width:820px;margin:8px auto 0;font-size:.72rem;color:var(--text3);text-align:center}

/* ---------- Modal (Ayarlar) ---------- */
.modal-backdrop{display:none;position:fixed;inset:0;background:rgba(5,6,10,.7);z-index:50;align-items:center;justify-content:center;padding:16px}
.modal-backdrop.show{display:flex}
.modal{width:100%;max-width:560px;max-height:88vh;overflow-y:auto;background:var(--surface);border:1px solid var(--border);border-radius:18px;padding:26px}
.modal-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:18px}
.modal-head h2{font-size:1.05rem}
.modal-close{background:none;border:none;color:var(--text2);font-size:1.3rem;cursor:pointer}
.modal-tabs{display:flex;gap:4px;background:var(--surface2);border-radius:10px;padding:4px;margin-bottom:20px;flex-wrap:wrap}
.modal-tabs button{flex:1;min-width:90px;padding:8px;border:none;background:transparent;color:var(--text2);border-radius:8px;font-weight:700;font-size:.78rem;cursor:pointer}
.modal-tabs button.active{background:var(--accent);color:#fff}
.modal-pane{display:none}
.modal-pane.active{display:block}
.mini-list{display:flex;flex-direction:column;gap:10px;margin-top:16px;max-height:260px;overflow-y:auto}
.mini-item{background:var(--surface2);border:1px solid var(--border);border-radius:10px;padding:10px 12px;font-size:.8rem}
.mini-item .tag{font-size:.68rem;padding:2px 7px;border-radius:8px;font-weight:700;background:var(--surface);color:var(--text2)}
.divider{border-top:1px solid var(--border);margin:20px 0}

.mobile-only{display:none}

@media (max-width:800px){
  .sidebar{position:fixed;left:0;top:0;bottom:0;z-index:40;transform:translateX(-100%);transition:.2s;width:82%;max-width:300px}
  .sidebar.open{transform:translateX(0)}
  .sidebar.open::after{content:'';position:fixed;inset:0;left:82%;background:rgba(5,6,10,.5);z-index:-1}
  .mobile-only{display:flex}
  .bubble{max-width:85%}
  .bubble.has-code{max-width:96%}
  .chat-area{padding:16px 10px}
  .code-block-head{flex-direction:column;align-items:flex-start}
  .code-block-actions{width:100%}
  .code-btn{flex:1;text-align:center}
  .code-preview-frame{height:260px}
  .composer-wrap{padding:10px 10px calc(10px + env(safe-area-inset-bottom))}
  .whatsapp-banner{padding:8px 12px}
  .whatsapp-banner a{font-size:.78rem}
  .modal{padding:20px;max-height:92vh}
  .auth-card{padding:26px 22px}
}

@media (max-width:420px){
  .auth-card{padding:22px 18px}
  .sidebar{width:88%}
}

/* iOS Safari, 16px'den küçük input font boyutunda otomatik yakınlaştırma
   yapar; formlara odaklanınca ekranın kaymasını önlemek için mobilde
   input/textarea/select yazı boyutunu en az 16px tutuyoruz. */
@media (max-width:800px){
  .field input,.field textarea,.field select,.composer textarea{font-size:16px}
}