/* AKIE — Chat. Segue o mesmo sistema de design-tokens usado no
   ecossistema AETHER (NEXUS/Refinaria), com cor de destaque própria. */

:root {
  --bg-void:     #05060A;
  --bg-base:     #0B0D14;
  --bg-surface:  #111420;
  --bg-elevated: #181C2C;
  --bg-input:    #171A26;

  --accent:      #8B6BF0;
  --accent-h:    #A288F5;
  --accent-g1:   rgba(139,107,240,.10);
  --accent-g2:   rgba(139,107,240,.22);

  --ok:   #3DD68C;
  --err:  #F06579;

  --tx-1: #EDF0F7;
  --tx-2: #8892A4;
  --tx-3: #4A5468;

  --bd:   rgba(255,255,255,.08);
  --bd-m: rgba(255,255,255,.14);

  --sh-md: 0 8px 32px rgba(0,0,0,.40);

  --sidebar-w: 260px;
  --r-s: 8px; --r-m: 12px; --r-l: 16px; --r-f: 9999px;
  --t: .18s cubic-bezier(.4,0,.2,1);
}

[data-theme="light"] {
  --bg-void:     #F0F3FA;
  --bg-base:     #FFFFFF;
  --bg-surface:  #F4F6FC;
  --bg-elevated: #E8ECF7;
  --bg-input:    #F4F6FC;

  --accent:      #6D45E0;
  --accent-h:    #5A36C4;
  --accent-g1:   rgba(109,69,224,.08);
  --accent-g2:   rgba(109,69,224,.16);

  --ok:  #1E9E64;
  --err: #D0384A;

  --tx-1: #0D1117;
  --tx-2: #4B5566;
  --tx-3: #94A3B8;

  --bd:   rgba(0,0,0,.08);
  --bd-m: rgba(0,0,0,.14);

  --sh-md: 0 8px 32px rgba(0,0,0,.10);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  height: 100%;
  background: var(--bg-void);
  color: var(--tx-1);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  transition: background var(--t), color var(--t);
}

.app {
  display: flex;
  height: 100vh;
  overflow: hidden;
}

/* ── Sidebar ── */
.sidebar {
  width: var(--sidebar-w);
  background: var(--bg-base);
  border-right: 1px solid var(--bd);
  display: flex;
  flex-direction: column;
  padding: 12px;
  flex-shrink: 0;
}

.new-chat-btn {
  background: transparent;
  border: 1px solid var(--bd-m);
  color: var(--tx-1);
  padding: 10px 14px;
  border-radius: var(--r-m);
  cursor: pointer;
  font-size: 14px;
  text-align: left;
  transition: background var(--t), border-color var(--t);
}
.new-chat-btn:hover { background: var(--bg-elevated); border-color: var(--accent); }

.sidebar-footer {
  margin-top: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 4px;
}
.brand { display: flex; align-items: center; gap: 8px; }
.brand-logo { width: 26px; height: 26px; border-radius: 7px; object-fit: cover; }
.brand-name { font-weight: 700; font-size: 15px; letter-spacing: .02em; }
.brand-sub { font-size: 11px; color: var(--tx-3); }

/* ── Theme toggle ── */
.theme-toggle {
  width: 40px;
  height: 22px;
  border-radius: var(--r-f);
  background: var(--bg-elevated);
  border: 1px solid var(--bd-m);
  cursor: pointer;
  position: relative;
  flex-shrink: 0;
  transition: background var(--t);
}
.theme-toggle .knob {
  position: absolute;
  top: 2px; left: 2px;
  width: 16px; height: 16px;
  border-radius: 50%;
  background: var(--accent);
  transition: transform var(--t);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
}
[data-theme="light"] .theme-toggle .knob { transform: translateX(18px); }
.theme-toggle svg { width: 10px; height: 10px; }

/* ── Main ── */
.main {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
  background: var(--bg-base);
}

.messages {
  flex: 1;
  overflow-y: auto;
  padding: 24px 16px 8px;
}

.empty-state {
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
}
.empty-logo {
  width: 64px;
  height: 64px;
  border-radius: 16px;
  object-fit: cover;
  margin-bottom: 4px;
  box-shadow: var(--sh-md);
}
.empty-title {
  font-size: 30px;
  font-weight: 700;
  background: linear-gradient(135deg, var(--accent), var(--accent-h));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.empty-sub { color: var(--tx-2); font-size: 15px; }

.msg-row {
  max-width: 760px;
  margin: 0 auto 24px;
  display: flex;
}
.msg-row.user { justify-content: flex-end; }

/* ── Cursor piscando durante o streaming (evita parecer travado) ── */
.stream-cursor {
  display: inline-block;
  width: 8px;
  height: 1em;
  margin-left: 2px;
  background: var(--accent);
  vertical-align: text-bottom;
  animation: blink 0.9s steps(1) infinite;
}
@keyframes blink { 50% { opacity: 0; } }

/* ── Indicador de "pensando" antes do primeiro token chegar ── */
.typing-dots { display: inline-flex; gap: 4px; padding: 6px 0; }
.typing-dots span {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--tx-3);
  animation: bounce 1.2s infinite ease-in-out;
}
.typing-dots span:nth-child(2) { animation-delay: .15s; }
.typing-dots span:nth-child(3) { animation-delay: .3s; }
@keyframes bounce {
  0%, 60%, 100% { transform: translateY(0); opacity: .5; }
  30% { transform: translateY(-4px); opacity: 1; }
}

.bubble-wrap { max-width: 82%; }

.bubble {
  padding: 10px 14px;
  border-radius: var(--r-l);
  line-height: 1.55;
  font-size: 15px;
  white-space: pre-wrap;
  word-wrap: break-word;
}
.msg-row.user .bubble { background: var(--bg-elevated); }
.msg-row.assistant .bubble { background: transparent; padding-left: 0; }

.msg-actions { margin-top: 4px; display: flex; gap: 8px; }
.icon-btn {
  background: transparent;
  border: none;
  color: var(--tx-3);
  cursor: pointer;
  padding: 4px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  transition: color var(--t), background var(--t);
}
.icon-btn:hover { color: var(--tx-1); background: var(--bg-elevated); }
.icon-btn.loading svg { animation: spin 1s linear infinite; }
.icon-btn.active-vote { color: var(--accent); }
@keyframes spin { to { transform: rotate(360deg); } }

/* ── Mode pills ── */
.mode-bar {
  max-width: 760px;
  width: 100%;
  margin: 0 auto;
  padding: 0 16px 8px;
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}
.mode-pill {
  background: transparent;
  border: 1px solid var(--bd-m);
  color: var(--tx-2);
  font-size: 12.5px;
  padding: 5px 12px;
  border-radius: var(--r-f);
  cursor: pointer;
  transition: all var(--t);
}
.mode-pill:hover { border-color: var(--accent); color: var(--tx-1); }
.mode-pill.active {
  background: var(--accent-g2);
  border-color: var(--accent);
  color: var(--accent-h);
}

/* ── Composer ── */
.composer {
  max-width: 760px;
  width: 100%;
  margin: 0 auto;
  padding: 8px 16px 20px;
  display: flex;
  align-items: flex-end;
  gap: 8px;
}

#input {
  flex: 1;
  background: var(--bg-input);
  color: var(--tx-1);
  border: 1px solid var(--bd-m);
  border-radius: var(--r-l);
  padding: 12px 16px;
  font-size: 15px;
  resize: none;
  max-height: 200px;
  font-family: inherit;
  transition: border-color var(--t);
}
#input:focus { outline: none; border-color: var(--accent); }
#input::placeholder { color: var(--tx-3); }

#send-btn {
  background: var(--accent);
  color: #fff;
  border: none;
  width: 36px; height: 36px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: background var(--t);
}
#send-btn:hover:not(:disabled) { background: var(--accent-h); }
#send-btn:disabled { opacity: .35; cursor: default; }

.disclaimer {
  text-align: center;
  font-size: 11.5px;
  color: var(--tx-3);
  padding: 0 16px 14px;
}

.hidden { display: none !important; }

/* ── Badge de usuário logado ── */
.user-badge {
  width: 26px; height: 26px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  border: none;
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

/* ── Login modal ── */
#login-screen {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(0,0,0,.55);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
}
.login-box {
  position: relative;
  width: 100%;
  max-width: 300px;
  max-height: 92vh;
  overflow-y: auto;
  background: var(--bg-base);
  border: 1px solid var(--bd);
  border-radius: var(--r-l);
  padding: 20px 20px 16px;
  box-shadow: var(--sh-md);
  text-align: center;
}
.login-close {
  position: absolute;
  top: 6px; right: 6px;
  background: transparent;
  border: none;
  color: var(--tx-3);
  font-size: 18px;
  line-height: 1;
  cursor: pointer;
  padding: 6px;
}
.login-close:hover { color: var(--tx-1); }
.login-logo { width: 34px; height: 34px; border-radius: 9px; margin: 0 auto 8px; display: block; }
.login-title { font-size: 16.5px; font-weight: 700; margin: 0 0 3px; }
.login-sub { font-size: 12px; color: var(--tx-2); margin: 0 0 14px; }

.btn-google {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--bg-elevated);
  border: 1px solid var(--bd-m);
  color: var(--tx-1);
  padding: 8px;
  border-radius: var(--r-m);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--t);
}
.btn-google:hover:not(:disabled) { background: var(--bg-surface); }
.btn-google:disabled { opacity: .6; cursor: default; }

.login-divider {
  color: var(--tx-3);
  font-size: 11px;
  margin: 10px 0;
  display: flex;
  align-items: center;
  gap: 8px;
}
.login-divider::before, .login-divider::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--bd-m);
}

.login-field { text-align: left; margin-bottom: 8px; }
.login-label { display: block; font-size: 11.5px; color: var(--tx-2); margin-bottom: 3px; }
.login-input {
  width: 100%;
  background: var(--bg-input);
  border: 1px solid var(--bd-m);
  color: var(--tx-1);
  padding: 7px 10px;
  border-radius: var(--r-m);
  font-size: 13px;
  font-family: inherit;
}
.login-input:focus { outline: none; border-color: var(--accent); }

.login-err { color: var(--err); font-size: 11.5px; min-height: 14px; margin: 2px 0 6px; }

.btn-login-main {
  width: 100%;
  background: var(--accent);
  color: #fff;
  border: none;
  padding: 8px;
  border-radius: var(--r-m);
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  transition: background var(--t), opacity var(--t);
}
.btn-login-main:hover:not(:disabled) { background: var(--accent-h); }
.btn-login-main.loading { opacity: .6; cursor: default; }

.login-switch { font-size: 12px; color: var(--tx-2); margin: 10px 0 0; }
.login-switch a { color: var(--accent); cursor: pointer; margin-left: 4px; font-weight: 600; }

@media (max-width: 700px) {
  .sidebar { display: none; }
  .bubble-wrap { max-width: 100%; }
}