/* ============================================================
   Dialnium AI — premium dark/gold chat UI
   ============================================================ */

:root {
  --bg-app:        #0b0c0f;
  --bg-sidebar:    #101114;
  --bg-panel:      #16171b;
  --bg-panel-2:    #1c1d22;
  --bg-hover:      #202128;
  --bg-input:      #1a1b20;
  --border:        rgba(255,255,255,0.08);
  --border-soft:   rgba(255,255,255,0.05);

  --text:          #ececec;
  --text-dim:      #9a9aa2;
  --text-faint:    #6b6b74;

  --gold:          #f0b90b;
  --gold-soft:     #f6cc4d;
  --gold-dim:      #8a6d0d;
  --gold-glow:     rgba(240, 185, 11, 0.28);

  --teal:          #34d1b4;
  --teal-glow:     rgba(52, 209, 180, 0.25);

  --danger:        #ef5350;
  --danger-glow:   rgba(239, 83, 80, 0.18);

  --radius-lg:     18px;
  --radius-md:     12px;
  --radius-sm:     8px;

  --font-display:  'Space Grotesk', 'Segoe UI', sans-serif;
  --font-body:     'Inter', 'Segoe UI', sans-serif;
  --font-mono:     'JetBrains Mono', 'SFMono-Regular', Consolas, monospace;

  --shadow-soft:   0 8px 30px rgba(0,0,0,0.35);
  --shadow-gold:   0 6px 20px rgba(240,185,11,0.18);
}

* { box-sizing: border-box; }
::selection { background: var(--gold-glow); color: #fff; }

html, body {
  height: 100%;
  margin: 0;
  background: var(--bg-app);
  color: var(--text);
  font-family: var(--font-body);
  -webkit-font-smoothing: antialiased;
  -webkit-tap-highlight-color: transparent;
}

body {
  display: flex;
  flex-direction: column;
  min-height: 100dvh;
  background-image:
    radial-gradient(1200px 600px at 15% -10%, rgba(240,185,11,0.06), transparent 55%),
    radial-gradient(900px 500px at 100% 0%, rgba(52,209,180,0.05), transparent 50%);
}

::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.12); border-radius: 8px; }
::-webkit-scrollbar-thumb:hover { background: rgba(255,255,255,0.2); }

button { font-family: inherit; }

/* ---- Brand ---- */
.brand {
  display: flex;
  align-items: center;
  gap: 9px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 17px;
  letter-spacing: 0.2px;
  white-space: nowrap;
}

.brand-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, var(--gold-soft), var(--gold) 60%, var(--gold-dim));
  box-shadow: 0 0 0 4px var(--gold-glow), 0 0 12px rgba(240,185,11,0.5);
}

.brand-text {
  background: linear-gradient(90deg, #fff 10%, var(--gold-soft) 60%, var(--gold) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* ============ App shell (sidebar + main) ============ */
.app-shell {
  display: flex;
  height: 100dvh;
  overflow: hidden;
}

.sidebar {
  width: 288px;
  flex-shrink: 0;
  background: var(--bg-sidebar);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  padding: 16px 14px;
  gap: 14px;
  transition: transform 0.28s cubic-bezier(.4,0,.2,1);
  z-index: 30;
}

.sidebar-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2px;
}

.icon-btn {
  background: transparent;
  border: 1px solid transparent;
  color: var(--text-dim);
  font-size: 19px;
  line-height: 1;
  cursor: pointer;
  width: 34px;
  height: 34px;
  border-radius: var(--radius-sm);
  display: none;
  align-items: center;
  justify-content: center;
  transition: background 0.15s ease, color 0.15s ease;
}
.icon-btn:hover { background: var(--bg-hover); color: var(--text); }

/* New chat button */
.new-chat-btn.full {
  width: 100%;
  background: linear-gradient(180deg, var(--bg-panel-2), var(--bg-panel));
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: var(--radius-md);
  padding: 12px 14px;
  font-size: 13.5px;
  font-weight: 600;
  cursor: pointer;
  text-align: left;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: border-color 0.15s ease, background 0.15s ease, transform 0.1s ease;
}
.new-chat-btn.full::before {
  content: '+';
  font-size: 16px;
  font-weight: 700;
  color: var(--gold);
  width: 18px;
  text-align: center;
}
.new-chat-btn.full:hover {
  border-color: var(--gold-dim);
  background: var(--bg-hover);
}
.new-chat-btn.full:active { transform: scale(0.98); }

/* Mode switch — segmented ticker control */
.mode-switch {
  display: inline-flex;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 3px;
  gap: 2px;
}

.mode-switch.full { width: 100%; display: flex; }
.mode-switch.full .mode-btn { flex: 1; justify-content: center; }

.mode-btn {
  appearance: none;
  border: none;
  background: transparent;
  color: var(--text-dim);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  padding: 8px 12px;
  border-radius: 999px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: color 0.15s ease, background 0.15s ease;
}

.mode-btn .pulse {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
  opacity: 0.35;
}

.mode-btn.active[data-mode="trading"] {
  background: linear-gradient(90deg, rgba(240,185,11,0.18), rgba(240,185,11,0.08));
  color: var(--gold-soft);
  box-shadow: inset 0 0 0 1px rgba(240,185,11,0.25);
}
.mode-btn.active[data-mode="trading"] .pulse {
  opacity: 1;
  box-shadow: 0 0 0 3px var(--gold-glow);
}
.mode-btn.active[data-mode="general"] {
  background: linear-gradient(90deg, rgba(52,209,180,0.18), rgba(52,209,180,0.08));
  color: var(--teal);
  box-shadow: inset 0 0 0 1px rgba(52,209,180,0.25);
}
.mode-btn.active[data-mode="general"] .pulse {
  opacity: 1;
  box-shadow: 0 0 0 3px var(--teal-glow);
}

.history-label {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--text-faint);
  margin: 6px 2px 0;
}

.history-list {
  flex: 1;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 2px;
  margin: 0 -4px;
  padding: 0 4px;
}

.history-item {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 10px 10px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  color: var(--text-dim);
  font-size: 13.5px;
  transition: background 0.15s ease, color 0.15s ease;
  position: relative;
}
.history-item:hover { background: var(--bg-panel-2); color: var(--text); }
.history-item.active {
  background: var(--bg-panel-2);
  color: var(--text);
  box-shadow: inset 2px 0 0 var(--gold);
}
.history-item[data-mode="general"].active { box-shadow: inset 2px 0 0 var(--teal); }

.history-item .h-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  flex-shrink: 0;
}
.history-item[data-mode="trading"] .h-dot { background: var(--gold); box-shadow: 0 0 6px var(--gold-glow); }
.history-item[data-mode="general"] .h-dot { background: var(--teal); box-shadow: 0 0 6px var(--teal-glow); }

.history-item .h-title {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.history-item .h-delete {
  opacity: 0;
  background: transparent;
  border: none;
  color: var(--text-faint);
  cursor: pointer;
  font-size: 16px;
  width: 22px;
  height: 22px;
  border-radius: 6px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.15s ease, background 0.15s ease, color 0.15s ease;
}
.history-item:hover .h-delete { opacity: 1; }
.history-item .h-delete:hover { color: var(--danger); background: var(--danger-glow); }

.history-empty {
  color: var(--text-faint);
  font-size: 12.5px;
  padding: 10px;
  text-align: center;
}

.sidebar-bottom {
  border-top: 1px solid var(--border);
  padding-top: 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.user-chip {
  display: flex;
  align-items: center;
  gap: 9px;
  overflow: hidden;
  padding: 6px;
  border-radius: var(--radius-sm);
  flex: 1;
  min-width: 0;
}

.user-avatar {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: linear-gradient(145deg, var(--gold-soft), var(--gold-dim));
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 700;
  color: #1a1305;
  flex-shrink: 0;
}

.user-name {
  font-size: 13.5px;
  font-weight: 500;
  color: var(--text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.logout-link {
  font-size: 12px;
  color: var(--text-dim);
  text-decoration: none;
  flex-shrink: 0;
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  transition: color 0.15s ease, border-color 0.15s ease, background 0.15s ease;
}
.logout-link:hover { color: var(--danger); border-color: rgba(239,83,80,0.4); background: var(--danger-glow); }

.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.55);
  -webkit-backdrop-filter: blur(2px);
  backdrop-filter: blur(2px);
  z-index: 20;
}

.main-col {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
  background: var(--bg-app);
}

/* ---- Top bar ---- */
.topbar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 13px 18px;
  border-bottom: 1px solid var(--border);
  background: rgba(16,17,20,0.85);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  position: sticky;
  top: 0;
  z-index: 10;
}

.topbar-mode {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 15.5px;
  color: var(--gold-soft);
  display: flex;
  align-items: center;
  gap: 8px;
}
.topbar-mode::before {
  content: '';
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 8px var(--gold-glow);
}
body[data-mode="general"] .topbar-mode { color: var(--teal); }
body[data-mode="general"] .topbar-mode::before { background: var(--teal); box-shadow: 0 0 8px var(--teal-glow); }

.topbar-spacer { flex: 1; }

/* ---- Chat area ---- */
.chat-wrap {
  flex: 1;
  overflow-y: auto;
  display: flex;
  justify-content: center;
  scroll-behavior: smooth;
}

.chat-inner {
  width: 100%;
  max-width: 780px;
  padding: 24px 18px 16px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.empty-state {
  margin: auto;
  text-align: center;
  color: var(--text-dim);
  padding: 40px 20px;
  max-width: 480px;
}
.empty-state h1 {
  font-family: var(--font-display);
  font-size: 26px;
  font-weight: 700;
  margin: 0 0 10px;
  background: linear-gradient(90deg, #fff, var(--gold-soft));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.empty-state p {
  font-size: 14.5px;
  line-height: 1.6;
  margin: 0;
  color: var(--text-dim);
}

/* ---- Messages: ChatGPT-style rows ---- */
.msg {
  display: flex;
  gap: 12px;
  padding: 14px 4px;
  animation: msgIn 0.25s ease;
}
@keyframes msgIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

.msg .avatar {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 700;
  font-family: var(--font-display);
}

.msg.assistant { align-self: stretch; }
.msg.assistant .avatar {
  background: linear-gradient(145deg, var(--gold-soft), var(--gold-dim));
  color: #1a1305;
  box-shadow: 0 0 0 1px rgba(255,255,255,0.06);
}
body[data-mode="general"] .msg.assistant .avatar {
  background: linear-gradient(145deg, #6ee8d0, #16806b);
  color: #06201c;
}

.msg.user {
  flex-direction: row-reverse;
}
.msg.user .avatar {
  background: var(--bg-panel-2);
  border: 1px solid var(--border);
  color: var(--text-dim);
}

.bubble {
  padding: 12px 15px;
  border-radius: var(--radius-md);
  font-size: 15px;
  line-height: 1.65;
  white-space: pre-wrap;
  word-wrap: break-word;
  max-width: 100%;
}

.msg.user {
  justify-content: flex-end;
}
.msg.user .bubble {
  background: linear-gradient(180deg, var(--bg-panel-2), var(--bg-panel));
  border: 1px solid var(--border);
  border-bottom-right-radius: 4px;
  max-width: 82%;
}

.msg.assistant .bubble {
  background: transparent;
  border: none;
  padding: 6px 0;
  flex: 1;
  min-width: 0;
}

.typing {
  display: inline-flex;
  gap: 5px;
  padding: 4px 0;
}
.typing span {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--gold);
  animation: blink 1.2s infinite ease-in-out;
}
body[data-mode="general"] .typing span { background: var(--teal); }
.typing span:nth-child(2) { animation-delay: 0.2s; }
.typing span:nth-child(3) { animation-delay: 0.4s; }
@keyframes blink { 0%, 80%, 100% { opacity: 0.25; transform: scale(0.85); } 40% { opacity: 1; transform: scale(1); } }

/* ---- Composer ---- */
.composer {
  border-top: 1px solid var(--border);
  background: linear-gradient(180deg, transparent, var(--bg-app) 40%);
  padding: 14px 18px calc(14px + env(safe-area-inset-bottom));
  display: flex;
  justify-content: center;
}

.composer-inner {
  width: 100%;
  max-width: 780px;
  display: flex;
  gap: 10px;
  align-items: flex-end;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 7px 7px 7px 16px;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
.composer-inner:focus-within {
  border-color: var(--gold-dim);
  box-shadow: 0 0 0 3px rgba(240,185,11,0.1);
}
body[data-mode="general"] .composer-inner:focus-within {
  border-color: rgba(52,209,180,0.5);
  box-shadow: 0 0 0 3px rgba(52,209,180,0.1);
}

#msg-input {
  flex: 1;
  resize: none;
  max-height: 160px;
  min-height: 26px;
  background: transparent;
  border: none;
  color: var(--text);
  padding: 9px 0;
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.4;
}
#msg-input:focus { outline: none; }
#msg-input::placeholder { color: var(--text-faint); }

#send-btn {
  background: linear-gradient(145deg, var(--gold-soft), var(--gold));
  color: #201804;
  border: none;
  border-radius: var(--radius-md);
  width: 42px;
  height: 42px;
  flex-shrink: 0;
  cursor: pointer;
  font-size: 17px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-gold);
  transition: transform 0.12s ease, opacity 0.12s ease;
}
#send-btn:hover:not(:disabled) { transform: translateY(-1px) scale(1.03); }
#send-btn:active:not(:disabled) { transform: scale(0.95); }
#send-btn:disabled { opacity: 0.4; cursor: not-allowed; box-shadow: none; }

body[data-mode="general"] #send-btn {
  background: linear-gradient(145deg, #6ee8d0, var(--teal));
  color: #06201c;
  box-shadow: 0 6px 20px rgba(52,209,180,0.22);
}

.disclaimer {
  text-align: center;
  font-size: 11px;
  color: var(--text-faint);
  margin: 0 0 10px;
  padding: 0 20px;
}

/* Mobile: sidebar becomes an overlay drawer */
@media (max-width: 820px) {
  .sidebar {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    transform: translateX(-100%);
    box-shadow: var(--shadow-soft);
  }
  .sidebar.open { transform: translateX(0); }
  .sidebar-overlay.visible { display: block; }
  .icon-btn { display: inline-flex; }
}

@media (max-width: 480px) {
  .brand .brand-text { font-size: 16px; }
  .mode-btn { padding: 8px 10px; font-size: 10.5px; }
  .chat-inner { padding: 16px 12px 10px; }
  .empty-state h1 { font-size: 21px; }
  .msg.user .bubble { max-width: 88%; }
}

/* ============ Auth pages (login/register) ============ */
.auth-body {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100dvh;
  padding: 24px;
  position: relative;
  overflow: hidden;
}

.auth-body::before {
  content: '';
  position: absolute;
  width: 500px;
  height: 500px;
  top: -180px;
  left: -140px;
  background: radial-gradient(circle, rgba(240,185,11,0.16), transparent 65%);
  pointer-events: none;
}
.auth-body::after {
  content: '';
  position: absolute;
  width: 480px;
  height: 480px;
  bottom: -200px;
  right: -160px;
  background: radial-gradient(circle, rgba(52,209,180,0.12), transparent 65%);
  pointer-events: none;
}

.auth-card {
  width: 100%;
  max-width: 400px;
  background: linear-gradient(180deg, var(--bg-panel), var(--bg-sidebar));
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 34px 28px;
  position: relative;
  z-index: 1;
  box-shadow: var(--shadow-soft), 0 0 0 1px rgba(255,255,255,0.02);
}

.auth-brand {
  margin-bottom: 22px;
  font-size: 19px;
}
.auth-brand .brand-dot { width: 11px; height: 11px; }

.auth-card h1 {
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 700;
  margin: 0 0 6px;
  color: var(--text);
}

.auth-sub {
  color: var(--text-dim);
  font-size: 13.5px;
  line-height: 1.5;
  margin: 0 0 22px;
}

.auth-error {
  background: var(--danger-glow);
  border: 1px solid rgba(239,83,80,0.35);
  color: #ff9d9a;
  font-size: 13px;
  padding: 10px 13px;
  border-radius: var(--radius-sm);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.auth-error::before { content: '⚠'; font-size: 14px; }

.auth-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.auth-form label {
  display: flex;
  flex-direction: column;
  gap: 7px;
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 0.3px;
  text-transform: uppercase;
  color: var(--text-faint);
}

.auth-form input {
  background: var(--bg-input);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: var(--radius-md);
  padding: 13px 14px;
  font-size: 14.5px;
  font-family: var(--font-body);
  font-weight: 500;
  letter-spacing: normal;
  text-transform: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
.auth-form input::placeholder { color: var(--text-faint); }
.auth-form input:focus {
  outline: none;
  border-color: var(--gold-dim);
  box-shadow: 0 0 0 3px rgba(240,185,11,0.12);
}

.auth-btn {
  margin-top: 6px;
  background: linear-gradient(145deg, var(--gold-soft), var(--gold));
  color: #201804;
  border: none;
  border-radius: var(--radius-md);
  padding: 13px;
  font-size: 14.5px;
  font-weight: 700;
  letter-spacing: 0.2px;
  cursor: pointer;
  box-shadow: var(--shadow-gold);
  transition: transform 0.12s ease, box-shadow 0.12s ease;
}
.auth-btn:hover { transform: translateY(-1px); box-shadow: 0 8px 24px rgba(240,185,11,0.26); }
.auth-btn:active { transform: translateY(0) scale(0.98); }

.auth-switch {
  text-align: center;
  margin: 22px 0 0;
  font-size: 13px;
  color: var(--text-dim);
}
.auth-switch a {
  color: var(--gold-soft);
  text-decoration: none;
  font-weight: 600;
}
.auth-switch a:hover { text-decoration: underline; }

.auth-divider {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 22px 0 0;
  color: var(--text-faint);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 1px;
}
.auth-divider::before,
.auth-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}