/* ═══════════════════════════════════════════════════════════════════════════
   style.css — Memorias Copilot Design System
   ═══════════════════════════════════════════════════════════════════════════ */

/* ─── Design tokens — light theme ────────────────────────────────────────── */
:root {
  /* Backgrounds */
  --bg-page:        #ffffff;
  --bg-user-row:    #f5f7fa;
  --bg-bot-row:     #ffffff;
  --bg-input:       #ffffff;
  --bg-code:        #f0f4f8;

  /* Borders */
  --border:         #e2e6ed;
  --border-input:   #c8cfd8;
  --border-focus:   #4a7fc1;

  /* Accent */
  --accent:         #2d6bbd;
  --accent-light:   #e8f0fb;
  --accent-hover:   #1e4f94;

  /* Text */
  --text-primary:   #1a1f2e;
  --text-secondary: #5a6478;
  --text-muted:     #99a3b3;
  --text-link:      #2d6bbd;

  /* Role labels */
  --label-user:     #3d5a80;
  --label-bot:      #2e6d58;

  /* States */
  --offline-bg:          #fff8e6;
  --offline-border:      #f0c040;
  --offline-text:        #7a5800;
  --truncation-bg:       #fff3e0;
  --truncation-border:   #ffcc80;
  --truncation-text:     #a05000;

  /* Typography */
  --font-size-base: 15px;
  --font-size-sm:   13px;
  --font-size-xs:   11.5px;
  --line-height:    1.7;

  /* Shape */
  --radius-sm: 4px;
  --radius-md: 8px;

  /* Motion */
  --transition: 0.15s ease;

  /* Layout */
  --input-max-h: 200px;
}

/* ─── Dark theme ──────────────────────────────────────────────────────────── */
[data-theme="dark"] {
  --bg-page:        #111318;
  --bg-user-row:    #1a1e26;
  --bg-bot-row:     #111318;
  --bg-input:       #1a1e26;
  --bg-code:        #0d1117;

  --border:         #2a2f3d;
  --border-input:   #3a4050;
  --border-focus:   #5b8fd4;

  --accent:         #5b8fd4;
  --accent-light:   rgba(91,143,212,0.12);
  --accent-hover:   #7aaae0;

  --text-primary:   #e8ecf4;
  --text-secondary: #8a93a8;
  --text-muted:     #4a5260;
  --text-link:      #7aaae0;

  --label-user:     #7aaee0;
  --label-bot:      #5aaa8a;

  --offline-bg:     #2a2100;
  --offline-border: #806000;
  --offline-text:   #ffd060;

  --truncation-bg:     #2a1a00;
  --truncation-border: #8a4000;
  --truncation-text:   #ffaa60;
}

/* ─── Reset & base ────────────────────────────────────────────────────────── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html, body {
  height: 100%;
  font-family: 'Inter', system-ui, sans-serif;
  background: var(--bg-page);
  color: var(--text-primary);
  font-size: var(--font-size-base);
  line-height: var(--line-height);
  -webkit-font-smoothing: antialiased;
}

a      { color: var(--text-link); }
code   { font-family: 'JetBrains Mono', monospace; }
button { font-family: inherit; }

/* ─── Scrollbar ───────────────────────────────────────────────────────────── */
::-webkit-scrollbar       { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 6px; }
::-webkit-scrollbar-thumb:hover { background: var(--border-input); }

/* ─── Layout ──────────────────────────────────────────────────────────────── */
.app {
  display: flex;
  flex-direction: column;
  height: 100vh;
  overflow: hidden;
}

/* ─── Top bar ─────────────────────────────────────────────────────────────── */
.top-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  height: 52px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-page);
  flex-shrink: 0;
}

.top-bar-left { display: flex; align-items: center; }

.app-wordmark {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}
.app-wordmark span {
  font-weight: 300;
  color: var(--text-secondary);
}

.top-bar-right {
  display: flex;
  align-items: center;
  gap: 8px;
}

/* Shared button base */
.bar-btn,
.theme-toggle {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  font-weight: 500;
  cursor: pointer;
  white-space: nowrap;
  transition: all var(--transition);
}
.bar-btn:hover,
.theme-toggle:hover {
  border-color: var(--border-input);
  color: var(--text-primary);
  background: var(--bg-user-row);
}
.bar-btn.accent {
  border-color: var(--accent);
  color: var(--accent);
}
.bar-btn.accent:hover { background: var(--accent-light); }

.theme-toggle { font-size: var(--font-size-xs); }

/* ─── Message list ────────────────────────────────────────────────────────── */
.messages {
  flex: 1;
  overflow-y: auto;
  background: var(--bg-page);
}

/* ─── Empty / welcome state ───────────────────────────────────────────────── */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 80px 24px 40px;
  text-align: center;
}

.empty-title {
  font-size: 22px;
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.empty-subtitle {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  max-width: 480px;
  line-height: 1.65;
}

.suggestion-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
  margin-top: 12px;
  max-width: 560px;
}

.chip {
  padding: 6px 14px;
  background: var(--bg-user-row);
  border: 1px solid var(--border);
  border-radius: 20px;
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition);
}
.chip:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-light);
}

/* ─── Message rows ────────────────────────────────────────────────────────── */
.message-row {
  display: flex;
  flex-direction: column;
  padding: 18px 0;
  border-bottom: 1px solid var(--border);
  position: relative;
}
.message-row.user-row { background: var(--bg-user-row); }
.message-row.bot-row  { background: var(--bg-bot-row);  }

/* Reveal edit link on row hover */
.message-row:hover .edit-link { opacity: 1; }

.message-inner {
  max-width: 760px;
  width: 100%;
  margin: 0 auto;
  padding: 0 24px;
}

.message-header {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin-bottom: 6px;
}

.message-label {
  font-size: var(--font-size-xs);
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
.user-row .message-label { color: var(--label-user); }
.bot-row  .message-label { color: var(--label-bot);  }

.message-time {
  font-size: var(--font-size-xs);
  color: var(--text-muted);
}

.edit-link {
  margin-left: auto;
  font-size: var(--font-size-xs);
  color: var(--text-muted);
  cursor: pointer;
  border: none;
  background: none;
  padding: 0;
  opacity: 0;
  transition: opacity var(--transition), color var(--transition);
}
.edit-link:hover { color: var(--accent); }

/* ─── Message body (text + Markdown) ─────────────────────────────────────── */
.message-body {
  font-size: var(--font-size-base);
  line-height: var(--line-height);
  color: var(--text-primary);
}

.message-body p              { margin-bottom: 0.55em; }
.message-body p:last-child   { margin-bottom: 0; }
.message-body h1, .message-body h2, .message-body h3 {
  font-weight: 600;
  margin: 0.9em 0 0.4em;
  letter-spacing: -0.01em;
}
.message-body h1 { font-size: 1.2em; }
.message-body h2 { font-size: 1.08em; }
.message-body h3 { font-size: 1em; }
.message-body ul, .message-body ol {
  padding-left: 1.5em;
  margin: 0.4em 0 0.6em;
}
.message-body li     { margin-bottom: 0.2em; }
.message-body strong { font-weight: 600; }
.message-body a      { color: var(--text-link); }

.message-body code {
  background: var(--bg-code);
  padding: 1px 5px;
  border-radius: 3px;
  font-size: 0.88em;
  color: var(--text-primary);
}
.message-body pre {
  background: var(--bg-code);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  overflow-x: auto;
  margin: 0.6em 0;
}
.message-body pre code { background: none; padding: 0; font-size: 0.87em; }

.message-body table { border-collapse: collapse; width: 100%; font-size: var(--font-size-sm); margin: 0.6em 0; }
.message-body th, .message-body td { border: 1px solid var(--border); padding: 6px 10px; text-align: left; }
.message-body th {
  background: var(--bg-user-row);
  font-weight: 600;
  font-size: var(--font-size-xs);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.message-body blockquote {
  border-left: 3px solid var(--border-input);
  padding-left: 12px;
  color: var(--text-secondary);
  margin: 0.6em 0;
}

/* ─── Inline editor ───────────────────────────────────────────────────────── */
.inline-editor         { display: none; flex-direction: column; gap: 8px; margin-top: 2px; }
.inline-editor.visible { display: flex; }

.inline-editor textarea {
  background: var(--bg-input);
  border: 1px solid var(--border-focus);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  color: var(--text-primary);
  font-family: 'Inter', sans-serif;
  font-size: var(--font-size-base);
  line-height: var(--line-height);
  resize: none;
  overflow-y: hidden;
  min-height: 72px;
  outline: none;
  box-shadow: 0 0 0 3px rgba(45,107,189,0.1);
}

.editor-actions { display: flex; gap: 8px; }

.btn {
  padding: 5px 14px;
  border-radius: var(--radius-sm);
  font-size: var(--font-size-sm);
  font-weight: 500;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all var(--transition);
}
.btn-cancel {
  background: transparent;
  border-color: var(--border);
  color: var(--text-secondary);
}
.btn-cancel:hover { border-color: var(--border-input); color: var(--text-primary); }
.btn-send { background: var(--accent); color: #fff; }
.btn-send:hover { background: var(--accent-hover); }

/* ─── Truncation notice ───────────────────────────────────────────────────── */
.truncation-notice {
  display: none;
  max-width: 760px;
  margin: 0 auto;
  padding: 8px 24px;
  font-size: var(--font-size-sm);
  color: var(--truncation-text);
  background: var(--truncation-bg);
  border-top: 1px solid var(--truncation-border);
  border-bottom: 1px solid var(--truncation-border);
}

/* ─── Thinking / streaming indicator ─────────────────────────────────────── */
.thinking-row         { display: none; background: var(--bg-bot-row); border-bottom: 1px solid var(--border); padding: 18px 0; }
.thinking-row.visible { display: block; }

.thinking-inner { max-width: 760px; margin: 0 auto; padding: 0 24px; }

.thinking-label {
  font-size: var(--font-size-xs);
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--label-bot);
  margin-bottom: 8px;
}

.thinking-dots { display: flex; gap: 5px; align-items: center; }

.dot {
  width: 6px; height: 6px;
  background: var(--text-muted);
  border-radius: 50%;
  animation: bounce 1.3s ease-in-out infinite;
}
.dot:nth-child(2) { animation-delay: 0.2s; }
.dot:nth-child(3) { animation-delay: 0.4s; }

@keyframes bounce {
  0%, 60%, 100% { transform: translateY(0);    opacity: 0.35; }
  30%            { transform: translateY(-4px); opacity: 1;    }
}

/* ─── Offline panel ───────────────────────────────────────────────────────── */
.offline-panel         { display: none; padding: 24px; }
.offline-panel.visible { display: block; }

.offline-card {
  max-width: 760px;
  margin: 0 auto;
  background: var(--offline-bg);
  border: 1px solid var(--offline-border);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  color: var(--offline-text);
  font-size: var(--font-size-sm);
  line-height: 1.7;
}
.offline-card strong { display: block; font-size: var(--font-size-base); margin-bottom: 4px; }
.offline-message { margin-top: 4px; }

/* ─── Input area ──────────────────────────────────────────────────────────── */
.input-area {
  flex-shrink: 0;
  border-top: 1px solid var(--border);
  background: var(--bg-page);
  padding: 14px 24px 18px;
}

.input-wrapper { max-width: 760px; margin: 0 auto; }

.input-row {
  display: flex;
  align-items: flex-end;
  gap: 8px;
  border: 1px solid var(--border-input);
  border-radius: var(--radius-md);
  padding: 10px 12px 10px 16px;
  background: var(--bg-input);
  transition: border-color var(--transition), box-shadow var(--transition);
}
.input-row:focus-within {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(45,107,189,0.1);
}

.input-textarea {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  color: var(--text-primary);
  font-family: 'Inter', sans-serif;
  font-size: var(--font-size-base);
  line-height: 1.6;
  resize: none;
  min-height: 24px;
  max-height: var(--input-max-h);
  overflow-y: auto;
}
.input-textarea::placeholder { color: var(--text-muted); }

.send-btn {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent);
  border: none;
  border-radius: var(--radius-sm);
  color: #fff;
  cursor: pointer;
  align-self: flex-end;
  transition: background var(--transition);
}
.send-btn:hover    { background: var(--accent-hover); }
.send-btn:disabled { background: var(--text-muted); cursor: not-allowed; }

.input-hint {
  margin-top: 8px;
  font-size: var(--font-size-xs);
  color: var(--text-muted);
  text-align: center;
}

/* ─── Responsive ──────────────────────────────────────────────────────────── */
@media (max-width: 600px) {
  .top-bar    { padding: 0 14px; }
  .message-inner,
  .input-wrapper,
  .thinking-inner { padding: 0 14px; }
  .input-area { padding: 10px 14px 14px; }
  .top-bar-right .bar-btn span { display: none; } /* hide button labels on mobile */
}

/* ─── Grounding badge ──────────────────────────────────────────────────────── */
.grounding-badge {
  font-size: var(--font-size-xs);
  font-weight: 500;
  padding: 2px 8px;
  border-radius: 12px;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-left: 6px;
}

/* Light theme colors */
.grounding-badge.none {
  background-color: #f1f3f4;
  color: #5f6368;
  border: 1px solid #dae0e5;
}
.grounding-badge.moderate {
  background-color: #e8f0fe;
  color: #1a73e8;
  border: 1px solid #c2dbff;
}
.grounding-badge.strong {
  background-color: #e6f4ea;
  color: #137333;
  border: 1px solid #c4eed0;
}

/* Dark theme colors */
[data-theme="dark"] .grounding-badge.none {
  background-color: #202124;
  color: #bdc1c6;
  border: 1px solid #3c4043;
}
[data-theme="dark"] .grounding-badge.moderate {
  background-color: rgba(66, 133, 244, 0.15);
  color: #8ab4f8;
  border: 1px solid rgba(66, 133, 244, 0.3);
}
[data-theme="dark"] .grounding-badge.strong {
  background-color: rgba(52, 168, 83, 0.15);
  color: #81c995;
  border: 1px solid rgba(52, 168, 83, 0.3);
}

/* ─── Feedback actions ──────────────────────────────────────────────────────── */
.feedback-actions {
  margin-left: auto;
  display: inline-flex;
  gap: 6px;
}

.feedback-btn {
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  width: 24px;
  height: 24px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition);
  padding: 0;
}

.feedback-btn:hover {
  border-color: var(--border-input);
  color: var(--text-primary);
  background: var(--bg-user-row);
}

.feedback-btn.active.up {
  background-color: rgba(52, 168, 83, 0.12);
  color: #137333;
  border-color: #c4eed0;
}

.feedback-btn.active.down {
  background-color: rgba(217, 48, 37, 0.12);
  color: #c5221f;
  border-color: #fad2cf;
}

/* ─── Consent modal ──────────────────────────────────────────────────────── */
.consent-overlay {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.55);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  padding: 24px;
  animation: consent-fade-in 0.2s ease;
}

.consent-overlay.hidden {
  display: none;
}

@keyframes consent-fade-in {
  from { opacity: 0; }
  to   { opacity: 1; }
}

.consent-card {
  background: var(--bg-page);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.18);
  max-width: 520px;
  width: 100%;
  padding: 32px 36px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  animation: consent-slide-up 0.22s ease;
}

@keyframes consent-slide-up {
  from { transform: translateY(10px); opacity: 0; }
  to   { transform: translateY(0);    opacity: 1; }
}

.consent-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

.consent-body {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  line-height: 1.65;
}

.consent-body strong {
  color: var(--text-primary);
  font-weight: 500;
}

.consent-note {
  font-size: var(--font-size-xs);
  color: var(--text-muted);
  line-height: 1.5;
  border-top: 1px solid var(--border);
  padding-top: 12px;
  margin-top: 2px;
}

.consent-actions {
  display: flex;
  justify-content: flex-end;
}

.btn-consent-accept {
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  padding: 9px 20px;
  font-size: var(--font-size-sm);
  font-weight: 500;
  cursor: pointer;
  transition: background var(--transition);
}

.btn-consent-accept:hover {
  background: var(--accent-hover);
}

/* ─── Footer ──────────────────────────────────────────────────────────────── */
.app-footer {
  margin-top: 10px;
  padding-top: 8px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 4px;
  font-size: var(--font-size-xs);
  color: var(--text-muted);
}

.app-footer a {
  color: var(--text-secondary);
  text-decoration: underline dotted;
  font-weight: 500;
  transition: color var(--transition);
}

.app-footer a:hover {
  color: var(--accent);
}

.footer-stats {
  color: var(--text-muted);
}