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

:root {
  --bg-deep: #0b0517;
  --bg-sidebar: #140a26;
  --bg-main: #0e071d;
  --bg-card: #1c1030;
  --bg-input: #150b28;
  --accent: #a855f7;
  --accent2: #6366f1;
  --accent-hover: #bd6bff;
  --accent-glow: rgba(168,85,247,.25);
  --purple: #c084fc;
  --red: #ff6b6b;
  --text-primary: #f3eefe;
  --text-secondary: #b3a3d1;
  --text-muted: #6d5b8f;
  --border: #2c1b49;
  --msg-out: linear-gradient(135deg,#7c3aed,#4f46e5);
  --msg-in: #1c1030;
  --radius: 12px;
  --transition: .18s cubic-bezier(.4,0,.2,1);
}

* { margin:0; padding:0; box-sizing:border-box; }
html, body { height:100%; overflow:hidden; }
body { font-family:'Inter',-apple-system,BlinkMacSystemFont,sans-serif; background:var(--bg-deep); color:var(--text-primary); }

.screen { position:fixed; inset:0; }

/* ===== AUTH ===== */
.auth-container {
  height:100%; display:flex; align-items:center; justify-content:center;
  background:
    radial-gradient(ellipse at 20% 10%, rgba(168,85,247,.22), transparent 55%),
    radial-gradient(ellipse at 80% 90%, rgba(99,102,241,.18), transparent 55%),
    radial-gradient(ellipse at 60% 40%, rgba(236,72,153,.08), transparent 45%),
    var(--bg-deep);
  position:relative; overflow:hidden;
}
.auth-container::before {
  content:''; position:absolute; inset:0; pointer-events:none; opacity:.5;
  background:
    radial-gradient(1px 1px at 12% 30%, #c084fc, transparent),
    radial-gradient(1px 1px at 28% 70%, #a855f7, transparent),
    radial-gradient(1px 1px at 45% 20%, #818cf8, transparent),
    radial-gradient(1px 1px at 62% 80%, #c084fc, transparent),
    radial-gradient(1px 1px at 78% 35%, #a855f7, transparent),
    radial-gradient(1px 1px at 90% 65%, #818cf8, transparent);
}
.auth-card {
  width:390px; max-width:94vw;
  background:var(--bg-card);
  border:1px solid var(--border);
  border-radius:24px;
  padding:38px 34px 30px;
  display:flex; flex-direction:column; align-items:center;
  box-shadow:0 24px 90px rgba(0,0,0,.55), 0 0 60px rgba(168,85,247,.08);
  animation:fadeUp .35s ease;
  position:relative;
  backdrop-filter:blur(14px);
}
@keyframes fadeUp { from { opacity:0; transform:translateY(24px); } to { opacity:1; transform:none; } }

.auth-logo-wrap { position:relative; margin-bottom:16px; }
.auth-logo-pulse {
  position:absolute; inset:-10px; border-radius:50%;
  background:var(--accent-glow); animation:pulse 2s infinite; filter:blur(2px);
}
@keyframes pulse { 0%,100%{opacity:.35;transform:scale(1)} 50%{opacity:.7;transform:scale(1.12)} }
.auth-logo {
  width:68px; height:68px; border-radius:50%;
  background:linear-gradient(135deg,#a855f7,#6366f1 55%,#ec4899);
  display:flex; align-items:center; justify-content:center;
  position:relative; box-shadow:0 10px 30px rgba(168,85,247,.4);
}

.auth-title { font-size:28px; font-weight:800; margin-bottom:2px; letter-spacing:.3px;
  background:linear-gradient(90deg,#e9d5ff,#a5b4fc); -webkit-background-clip:text; -webkit-text-fill-color:transparent;
}
.auth-subtitle { color:var(--text-secondary); font-size:13px; margin-bottom:24px; }

.auth-tabs { display:flex; width:100%; margin-bottom:20px; gap:6px; background:var(--bg-input); border-radius:12px; padding:4px; }
.auth-tab {
  flex:1; padding:10px; border:none; border-radius:9px;
  background:transparent; color:var(--text-secondary);
  font-size:13px; font-weight:600; cursor:pointer; transition:var(--transition);
}
.auth-tab.active { background:linear-gradient(135deg,#7c3aed,#4f46e5); color:#fff; box-shadow:0 4px 16px rgba(124,58,237,.4); }

.auth-fields { width:100%; display:flex; flex-direction:column; gap:10px; }
.auth-field {
  display:flex; align-items:center; gap:10px;
  background:var(--bg-input); border:1px solid var(--border);
  border-radius:12px; padding:13px 15px; transition:var(--transition);
}
.auth-field:focus-within { border-color:var(--accent); box-shadow:0 0 0 3px var(--accent-glow); }
.auth-field input {
  flex:1; background:transparent; border:none; outline:none;
  color:var(--text-primary); font-size:14px; font-family:inherit;
}
.auth-field input::placeholder { color:var(--text-muted); }

.auth-err { color:var(--red); font-size:13px; min-height:18px; margin-top:6px; text-align:center; }
.btn-auth {
  width:100%; padding:14px; border:none; border-radius:12px;
  background:linear-gradient(135deg,#7c3aed,#4f46e5 60%,#6366f1);
  color:#fff; font-size:15px; font-weight:700; font-family:inherit;
  cursor:pointer; margin-top:12px; transition:var(--transition);
  box-shadow:0 8px 24px rgba(124,58,237,.35);
}
.btn-auth:hover { filter:brightness(1.15); transform:translateY(-2px); box-shadow:0 12px 32px rgba(124,58,237,.5); }
.auth-hint { color:var(--text-muted); font-size:12px; margin-top:16px; }

/* ===== APP LAYOUT ===== */
.app-mount { display:flex; height:100%; }

/* Sidebar */
.sidebar {
  width:300px; min-width:300px; background:var(--bg-sidebar);
  display:flex; flex-direction:column;
  border-right:1px solid var(--border);
}
.sb-header { padding:14px 14px 10px; }
.sb-user { display:flex; align-items:center; gap:12px; }
.sb-avatar {
  width:42px; height:42px; border-radius:50%;
  display:flex; align-items:center; justify-content:center;
  font-weight:700; font-size:17px; flex-shrink:0; color:#fff;
  background:linear-gradient(135deg,#a855f7,#6366f1);
  box-shadow:0 4px 14px rgba(168,85,247,.3);
}
.sb-name { font-weight:600; font-size:14px; color:var(--text-primary); }
.sb-status { font-size:11.5px; color:var(--text-secondary); }
.sb-status.ok { color:#7ee2a8; }
.sb-status.err { color:var(--red); }
.sb-icon {
  background:transparent; border:none; color:var(--text-secondary);
  cursor:pointer; padding:8px; border-radius:8px; transition:var(--transition);
  margin-left:auto; flex-shrink:0;
}
.sb-icon:hover { background:rgba(255,255,255,.07); color:var(--text-primary); }

.sb-search {
  display:flex; align-items:center; gap:8px;
  margin:4px 12px 8px; padding:9px 12px;
  background:var(--bg-input); border-radius:12px; border:1px solid transparent; transition:var(--transition);
}
.sb-search:focus-within { border-color:var(--accent); box-shadow:0 0 0 3px var(--accent-glow); }
.sb-search input {
  flex:1; background:transparent; border:none; outline:none;
  color:var(--text-primary); font-size:13.5px; font-family:inherit;
}
.sb-search input::placeholder { color:var(--text-muted); }
.sb-new {
  width:30px; height:30px; border-radius:9px; border:none;
  background:transparent; color:var(--text-secondary);
  cursor:pointer; display:flex; align-items:center; justify-content:center;
  transition:var(--transition);
}
.sb-new:hover { background:rgba(168,85,247,.18); color:var(--accent); }

.sb-list { flex:1; overflow-y:auto; padding:4px 8px; }
.chat-item {
  display:flex; align-items:center; gap:12px;
  padding:10px 10px; border-radius:12px; cursor:pointer;
  transition:background var(--transition);
  position:relative;
}
.chat-item:hover { background:rgba(255,255,255,.05); }
.chat-item.active { background:linear-gradient(90deg,rgba(124,58,237,.22),rgba(99,102,241,.08)); }
.chat-item.active::before {
  content:''; position:absolute; left:3px; top:50%; transform:translateY(-50%);
  width:3px; height:30px; border-radius:2px;
  background:linear-gradient(180deg,#a855f7,#6366f1);
  box-shadow:0 0 10px rgba(168,85,247,.7);
}
.chat-item .ci-avatar {
  width:48px; height:48px; border-radius:50%;
  display:flex; align-items:center; justify-content:center;
  font-weight:700; font-size:18px; flex-shrink:0; color:#fff;
  background:linear-gradient(135deg,#a855f7,#6366f1);
}
.ci-meta { flex:1; min-width:0; }
.ci-row1 { display:flex; align-items:baseline; justify-content:space-between; gap:6px; }
.ci-name { font-weight:600; font-size:14px; overflow:hidden; text-overflow:ellipsis; white-space:nowrap; }
.ci-last { font-size:12.5px; color:var(--text-secondary); overflow:hidden; text-overflow:ellipsis; white-space:nowrap; margin-top:2px; }
.ci-right { display:flex; flex-direction:column; align-items:flex-end; gap:3px; flex-shrink:0; }
.ci-time { font-size:11px; color:var(--text-muted); }
.ci-badge {
  min-width:20px; height:20px; padding:0 5px; border-radius:10px;
  background:linear-gradient(135deg,#a855f7,#6366f1);
  color:#fff; font-size:11px; font-weight:700;
  display:flex; align-items:center; justify-content:center;
  box-shadow:0 2px 8px rgba(168,85,247,.5);
}
.ci-badge.empty { background:transparent; box-shadow:none; }
.ci-online-dot {
  width:10px; height:10px; border-radius:50%; border:2px solid var(--bg-sidebar);
  position:absolute; bottom:0; right:0; background:#7ee2a8;
}

.sb-footer { padding:10px 12px 14px; border-top:1px solid var(--border); }
.btn-connect-bar {
  display:flex; align-items:center; gap:8px; width:100%;
  padding:11px; border:none; border-radius:12px;
  background:rgba(124,58,237,.14); color:var(--purple);
  font-size:13px; font-weight:600; font-family:inherit;
  cursor:pointer; transition:var(--transition);
  border:1px solid rgba(124,58,237,.25);
}
.btn-connect-bar:hover { background:rgba(124,58,237,.24); transform:translateY(-1px); }
.sb-lan { margin-top:8px; padding:7px 10px; border-radius:9px; background:rgba(124,58,237,.12); color:#c9b3ee; font-size:11px; }
.sb-lan b { color:#e3d5ff; font-weight:600; }

/* Chat area */
.chat-area { flex:1; display:flex; flex-direction:column; background:var(--bg-main); position:relative; }

.empty-state {
  flex:1; display:flex; flex-direction:column; align-items:center; justify-content:center;
  color:var(--text-secondary); text-align:center; padding:40px; position:relative;
}
.empty-glow {
  position:absolute; width:340px; height:340px; border-radius:50%;
  background:radial-gradient(circle,rgba(168,85,247,.16),transparent 70%);
  animation:glow 4s infinite alternate; pointer-events:none;
}
@keyframes glow { from{opacity:.35;transform:scale(.95)} to{opacity:.7;transform:scale(1.08)} }
.empty-logo { position:relative; margin-bottom:16px; }
.empty-state h2 { font-size:22px; font-weight:700; color:var(--text-primary); margin-bottom:8px; position:relative; }
.empty-state p { font-size:14px; line-height:1.6; position:relative; max-width:340px; }

.chat-pane { flex:1; display:flex; flex-direction:column; }
.cp-header {
  display:flex; align-items:center; gap:12px; padding:12px 16px;
  background:var(--bg-sidebar); border-bottom:1px solid var(--border);
}
.cp-avatar {
  width:44px; height:44px; border-radius:50%;
  display:flex; align-items:center; justify-content:center;
  font-weight:700; font-size:18px; flex-shrink:0; color:#fff;
  background:linear-gradient(135deg,#a855f7,#6366f1);
  box-shadow:0 4px 14px rgba(168,85,247,.3);
}
.cp-name { font-weight:700; font-size:15px; }
.cp-status { font-size:12px; color:var(--text-secondary); }
.cp-status.online { color:#7ee2a8; }

.cp-messages {
  flex:1; overflow-y:auto; padding:16px;
  display:flex; flex-direction:column; gap:3px;
  background:
    radial-gradient(ellipse at 15% 15%, rgba(168,85,247,.05), transparent 50%),
    radial-gradient(ellipse at 85% 85%, rgba(99,102,241,.05), transparent 50%),
    var(--bg-main);
}
.day-sep { align-self:center; padding:4px 14px; border-radius:8px; background:rgba(255,255,255,.05); font-size:12px; color:var(--text-muted); margin:8px 0; }

.msg { max-width:65%; display:flex; flex-direction:column; margin-bottom:2px; animation:msgIn .2s ease; }
@keyframes msgIn { from { opacity:0; transform:translateY(8px); } to { opacity:1; transform:none; } }
.msg.out { align-self:flex-end; align-items:flex-end; }
.msg.in { align-self:flex-start; align-items:flex-start; }

.bubble {
  padding:9px 13px; border-radius:18px; font-size:14.5px; line-height:1.4;
  word-wrap:break-word; position:relative;
}
.msg.out .bubble {
  background:var(--msg-out); border-top-right-radius:5px;
  color:#fff; box-shadow:0 4px 18px rgba(124,58,237,.25);
}
.msg.in .bubble {
  background:var(--msg-in); border:1px solid var(--border); border-top-left-radius:5px;
  color:var(--text-primary);
}
.bubble .sender { font-size:12px; font-weight:700; background:linear-gradient(90deg,#c084fc,#a5b4fc); -webkit-background-clip:text; -webkit-text-fill-color:transparent; margin-bottom:2px; }
.bubble .meta {
  float:right; margin-left:10px; margin-top:2px;
  font-size:11px; color:rgba(255,255,255,.6); display:flex; align-items:center; gap:3px;
}
.msg.out .bubble .meta { color:rgba(255,255,255,.8); }
.msg.sys { align-self:center; max-width:85%; }
.msg.sys .bubble {
  background:rgba(255,255,255,.05); color:var(--text-muted);
  border:1px solid var(--border); border-radius:12px; font-size:12.5px; text-align:center;
}

.cp-composer {
  display:flex; align-items:center; gap:10px; padding:12px 16px;
  background:var(--bg-sidebar); border-top:1px solid var(--border);
}
.cp-composer input {
  flex:1; padding:12px 16px; border-radius:24px;
  background:var(--bg-input); border:1px solid var(--border);
  color:var(--text-primary); font-size:14.5px; font-family:inherit; outline:none;
  transition:var(--transition);
}
.cp-composer input:focus { border-color:var(--accent); box-shadow:0 0 0 3px var(--accent-glow); }
.btn-send {
  width:46px; height:46px; border-radius:50%; border:none;
  background:linear-gradient(135deg,#7c3aed,#6366f1);
  display:flex; align-items:center; justify-content:center;
  cursor:pointer; flex-shrink:0; transition:var(--transition);
  box-shadow:0 6px 18px rgba(124,58,237,.4);
}
.btn-send:hover { filter:brightness(1.18); transform:scale(1.08); }

/* Modal */
.modal { position:fixed; inset:0; z-index:100; display:flex; align-items:center; justify-content:center; }
.modal-backdrop { position:absolute; inset:0; background:rgba(0,0,0,.6); backdrop-filter:blur(3px); }
.modal-card {
  position:relative; width:400px; max-width:92vw;
  background:var(--bg-card); border:1px solid var(--border); border-radius:20px;
  padding:26px; animation:fadeUp .25s ease;
  box-shadow:0 24px 80px rgba(0,0,0,.6);
}
.modal-card h3 { font-size:18px; margin-bottom:4px; }
.modal-card p { color:var(--text-secondary); font-size:13px; margin-bottom:14px; }
.modal-field {
  background:var(--bg-input); border:1px solid var(--border); border-radius:12px; padding:12px 14px;
  transition:var(--transition);
}
.modal-field:focus-within { border-color:var(--accent); box-shadow:0 0 0 3px var(--accent-glow); }
.modal-field input { width:100%; background:transparent; border:none; outline:none; color:var(--text-primary); font-size:14px; font-family:inherit; }
.modal-field input::placeholder { color:var(--text-muted); }
.modal-results { margin-top:10px; max-height:200px; overflow-y:auto; }
.modal-result {
  display:flex; align-items:center; gap:10px; padding:10px; border-radius:10px; cursor:pointer;
  transition:background var(--transition);
}
.modal-result:hover { background:rgba(255,255,255,.06); }
.modal-result .mr-avatar {
  width:36px; height:36px; border-radius:50%; display:flex; align-items:center; justify-content:center;
  font-weight:600; font-size:14px; color:#fff; flex-shrink:0;
  background:linear-gradient(135deg,#a855f7,#6366f1);
}
.modal-result .mr-name { font-size:14px; font-weight:500; }
.modal-result .mr-status { font-size:12px; color:var(--text-muted); }
.modal-actions { display:flex; gap:10px; margin-top:16px; }
.btn-ghost {
  flex:1; padding:11px; border:1px solid var(--border); border-radius:12px;
  background:transparent; color:var(--text-secondary); font-size:14px; font-family:inherit;
  cursor:pointer; transition:var(--transition);
}
.btn-ghost:hover { background:rgba(255,255,255,.06); color:var(--text-primary); }

::-webkit-scrollbar { width:6px; }
::-webkit-scrollbar-thumb { background:var(--border); border-radius:3px; }
::-webkit-scrollbar-track { background:transparent; }