/* App — 1MinuteBrain Chat Styles */
/* Theme variables are injected from App/config/theme.json at build time */

/* ============================================================
   Design Tokens (see root CLAUDE.md UI/UX Standards)
   ============================================================ */

:root {
  /* Colors */
  --color-primary: #6C5CE7;
  --color-primary-light: #A29BFE;
  --color-primary-dark: #5A4BD1;
  --color-secondary: #00CEC9;
  --color-accent: #FD79A8;
  --color-background: #FAFAFA;
  --color-surface: #FFFFFF;
  --color-text: #2D3436;
  --color-text-light: #636E72;
  --color-success: #00B894;
  --color-warning: #FDCB6E;
  --color-danger: #E17055;
  --color-border: #DFE6E9;

  /* Typography */
  --font-family: 'Poppins', sans-serif;
  --font-size-h1: 2rem;
  --font-size-h2: 1.5rem;
  --font-size-h3: 1.25rem;
  --font-size-body: 1rem;
  --font-size-small: 0.875rem;
  --font-size-caption: 0.75rem;

  /* Spacing (8px grid) */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;
  --space-8: 64px;

  /* Layout */
  --max-chat-width: 800px;
  --border-radius: 8px;
  --border-radius-lg: 12px;
  --border-radius-pill: 9999px;
  --transition-fast: 150ms ease;
  --transition-normal: 200ms ease;
}

/* ============================================================
   Base / Reset
   ============================================================ */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
[hidden] { display: none !important; }
html { font-size: 16px; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-family);
  font-size: var(--font-size-body);
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-background);
  -webkit-font-smoothing: antialiased;
}

/* ============================================================
   Accessibility
   ============================================================ */

.skip-link {
  position: absolute; top: -100%; left: var(--space-4);
  padding: var(--space-2) var(--space-4);
  background: var(--color-primary); color: #fff;
  border-radius: var(--border-radius); z-index: 1000;
  font-size: var(--font-size-small); text-decoration: none;
}
.skip-link:focus { top: var(--space-2); }

.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0;
}

:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

/* ============================================================
   Typography
   ============================================================ */

h1 { font-size: var(--font-size-h1); font-weight: 700; line-height: 1.25; }
h2 { font-size: var(--font-size-h2); font-weight: 600; line-height: 1.3; }
a { color: var(--color-primary); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ============================================================
   Buttons
   ============================================================ */

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  font-family: var(--font-family); font-size: var(--font-size-small); font-weight: 500;
  border: none; border-radius: var(--border-radius); cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none; line-height: 1;
}
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn-primary { background: var(--color-primary); color: #fff; }
.btn-primary:hover:not(:disabled) { background: var(--color-primary-dark); }
.btn-secondary { background: transparent; color: var(--color-primary); border: 1px solid var(--color-primary); }
.btn-danger { background: var(--color-danger); color: #fff; }
.btn-ghost { background: transparent; color: var(--color-text-light); }
.btn-sm { padding: var(--space-2) var(--space-3); font-size: var(--font-size-caption); }
.btn-full { width: 100%; }
.btn-icon { padding: var(--space-2); min-width: 44px; min-height: 44px; border-radius: 50%; }

.btn-spinner {
  display: inline-block; width: 16px; height: 16px;
  border: 2px solid rgba(255,255,255,0.3);
  border-top-color: #fff; border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
.btn-spinner[hidden] { display: none; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ============================================================
   Forms (login page)
   ============================================================ */

.form-group { margin-bottom: var(--space-5); }
.form-group-checkbox { margin-bottom: var(--space-3); }
.form-label { display: block; margin-bottom: var(--space-1); font-size: var(--font-size-small); font-weight: 500; }
.form-input {
  width: 100%; padding: var(--space-3);
  font-family: var(--font-family); font-size: var(--font-size-body);
  border: 1px solid var(--color-border); border-radius: var(--border-radius);
  background: var(--color-surface); color: var(--color-text);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}
.form-input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(108, 92, 231, 0.15);
  outline: none;
}
.form-input.is-error { border-color: var(--color-danger); }
.form-error { color: var(--color-danger); font-size: var(--font-size-caption); margin-top: var(--space-1); min-height: 1em; }

.checkbox-label {
  display: flex; align-items: flex-start; gap: var(--space-2);
  font-size: var(--font-size-small); cursor: pointer;
}
.checkbox-label input[type="checkbox"] { margin-top: 3px; accent-color: var(--color-primary); }

.input-password-wrap { position: relative; }
.password-toggle {
  position: absolute; right: var(--space-3); top: 50%; transform: translateY(-50%);
  background: none; border: none; cursor: pointer; color: var(--color-text-light);
  padding: var(--space-1); min-width: 44px; min-height: 44px;
  display: flex; align-items: center; justify-content: center;
}

/* ============================================================
   Login Layout
   ============================================================ */

.login-layout {
  display: flex; align-items: center; justify-content: center;
  min-height: 100vh; padding: var(--space-5);
}
.login-card {
  width: 100%; max-width: 400px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  padding: var(--space-6);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
}
.login-logo { text-align: center; font-size: var(--font-size-h2); font-weight: 700; margin-bottom: var(--space-2); }
.login-title {
  text-align: center; font-size: var(--font-size-h3); font-weight: 500;
  color: var(--color-text-light); margin-bottom: var(--space-5);
}

.site-footer-minimal {
  position: fixed; bottom: 0; left: 0; right: 0;
  display: flex; justify-content: center; gap: var(--space-4);
  padding: var(--space-3); background: transparent;
}
.site-footer-minimal a { color: var(--color-text-light); font-size: var(--font-size-caption); }

/* ============================================================
   Chat Layout
   ============================================================ */

.page-chat {
  display: flex; flex-direction: column; height: 100vh;
  overflow: hidden;
}

.chat-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: var(--space-3) var(--space-4);
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  flex-shrink: 0;
}
.chat-logo { font-weight: 700; font-size: var(--font-size-h3); white-space: nowrap; }

.header-neuron-counter {
  font-size: var(--font-size-body-sm);
  font-weight: 500;
  color: var(--color-text);
  background: var(--color-background);
  border: 1px solid var(--color-border);
  border-radius: 9999px;
  padding: var(--space-1) var(--space-3);
  white-space: nowrap;
}
.header-neuron-counter.is-warning { color: #b8860b; border-color: var(--color-warning); background: rgba(253, 203, 110, 0.1); }
.header-neuron-counter.is-danger { color: var(--color-danger); border-color: var(--color-danger); background: rgba(225, 112, 85, 0.1); }

.chat-layout { flex: 1; overflow: hidden; position: relative; }

/* ============================================================
   Chat Messages
   ============================================================ */

.chat-messages {
  height: 100%; overflow-y: auto;
  padding: var(--space-4);
  max-width: var(--max-chat-width);
  margin: 0 auto;
  display: flex; flex-direction: column; gap: var(--space-3);
}

.message {
  max-width: 80%;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--border-radius-lg);
  font-size: var(--font-size-small);
  line-height: 1.5;
  position: relative;
}

.message-user {
  align-self: flex-end;
  background: var(--color-primary);
  color: #fff;
  border-bottom-right-radius: var(--space-1);
}

.message-bot {
  align-self: flex-start;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-bottom-left-radius: var(--space-1);
}

.message-timestamp {
  font-size: var(--font-size-caption);
  color: var(--color-text-light);
  margin-top: var(--space-1);
}
.message-meta {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-top: var(--space-1);
}
.message-meta .message-timestamp { margin-top: 0; }
.message-neuron-cost {
  font-size: var(--font-size-caption);
  color: var(--color-text-light);
  opacity: 0.7;
}
.message-user .message-timestamp { color: rgba(255, 255, 255, 0.7); }

/* Copy button on bot messages */
.message-copy {
  position: absolute; top: var(--space-2); right: var(--space-2);
  opacity: 0; transition: opacity var(--transition-fast);
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: var(--border-radius); padding: var(--space-1) var(--space-2);
  font-size: var(--font-size-caption); cursor: pointer;
  color: var(--color-text-light);
}
.message-bot:hover .message-copy,
.message-bot:focus-within .message-copy { opacity: 1; }

/* ============================================================
   Typing Indicator
   ============================================================ */

.typing-dots {
  display: flex; gap: 4px; padding: var(--space-2) 0;
}
.typing-dots span {
  width: 8px; height: 8px;
  background: var(--color-text-light);
  border-radius: 50%;
  animation: typing 1.4s infinite ease-in-out;
}
.typing-dots span:nth-child(2) { animation-delay: 0.2s; }
.typing-dots span:nth-child(3) { animation-delay: 0.4s; }
@keyframes typing { 0%, 60%, 100% { opacity: 0.3; transform: scale(0.8); } 30% { opacity: 1; transform: scale(1); } }

/* ============================================================
   Starter Chips
   ============================================================ */

.starter-chips {
  display: flex; flex-wrap: wrap; gap: var(--space-2);
  padding: var(--space-2) 0;
}
.starter-chip {
  padding: var(--space-2) var(--space-3);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-pill);
  font-size: var(--font-size-caption); font-family: var(--font-family);
  cursor: pointer;
  transition: all var(--transition-fast);
}
.starter-chip:hover {
  border-color: var(--color-primary);
  background: rgba(108, 92, 231, 0.04);
}

/* ============================================================
   Scroll Pill
   ============================================================ */

.scroll-pill {
  position: absolute; bottom: var(--space-4); left: 50%;
  transform: translateX(-50%);
  padding: var(--space-2) var(--space-4);
  background: var(--color-primary); color: #fff;
  border: none; border-radius: var(--border-radius-pill);
  font-size: var(--font-size-caption); font-family: var(--font-family);
  cursor: pointer; box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
  z-index: 10;
}

/* ============================================================
   Chat Input Bar
   ============================================================ */

.chat-input-bar {
  flex-shrink: 0;
  padding: var(--space-3) var(--space-4);
  border-top: 1px solid var(--color-border);
  background: var(--color-surface);
}

.chat-input-wrap {
  max-width: var(--max-chat-width);
  margin: 0 auto;
  display: flex; align-items: flex-end; gap: var(--space-2);
}

.chat-textarea {
  flex: 1;
  padding: var(--space-3);
  font-family: var(--font-family); font-size: var(--font-size-body);
  border: 1px solid var(--color-border); border-radius: var(--border-radius-lg);
  background: var(--color-background); color: var(--color-text);
  resize: none; min-height: 44px; max-height: 180px;
  transition: border-color var(--transition-fast);
}
.chat-textarea:focus {
  border-color: var(--color-primary); outline: none;
}

.chat-input-meta {
  max-width: var(--max-chat-width);
  margin: var(--space-1) auto 0;
  display: flex; justify-content: flex-end;
}
.char-counter { font-size: var(--font-size-caption); color: var(--color-text-light); }
.char-counter.is-warning { color: #b8860b; }
.char-counter.is-danger { color: var(--color-danger); }

/* neuron-counter is now .header-neuron-counter in the chat header */

/* ============================================================
   Banners (session, offline, budget warnings)
   ============================================================ */

.banner {
  padding: var(--space-2) var(--space-4);
  text-align: center;
  font-size: var(--font-size-small);
  flex-shrink: 0;
}
.banner-warning { background: rgba(253, 203, 110, 0.25); color: #b8860b; }
.banner-danger { background: rgba(225, 112, 85, 0.15); color: var(--color-danger); }

/* ============================================================
   Confirmation Dialogs
   ============================================================ */

.confirm-dialog {
  border: none; border-radius: var(--border-radius-lg);
  padding: var(--space-5);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
  max-width: 420px; width: 90%;
}
.confirm-dialog::backdrop { background: rgba(0, 0, 0, 0.4); backdrop-filter: blur(2px); }
.confirm-dialog h2 { margin-bottom: var(--space-3); font-size: var(--font-size-h3); }
.confirm-dialog p { margin-bottom: var(--space-5); color: var(--color-text-light); font-size: var(--font-size-small); }
.dialog-actions { display: flex; gap: var(--space-3); justify-content: flex-end; }

/* ============================================================
   Chat Ended Overlay
   ============================================================ */

.chat-ended-overlay {
  position: fixed; inset: 0;
  background: rgba(0, 0, 0, 0.5);
  display: flex; align-items: center; justify-content: center;
  z-index: 200;
}
.chat-ended-overlay[hidden] { display: none; }
.chat-ended-card {
  background: var(--color-surface);
  border-radius: var(--border-radius-lg);
  padding: var(--space-7) var(--space-6);
  text-align: center;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
}

/* ============================================================
   Label Hints
   ============================================================ */

.label-hint { font-weight: 400; color: var(--color-text-light); }

/* ============================================================
   Brain Picker Layout
   ============================================================ */

.page-brains {
  min-height: 100vh;
  display: flex; flex-direction: column;
}

.brains-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: var(--space-3) var(--space-4);
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}
.brains-logo { font-weight: 700; font-size: var(--font-size-h3); }

.brains-layout {
  flex: 1;
  max-width: 720px;
  width: 100%;
  margin: 0 auto;
  padding: var(--space-6) var(--space-4);
}
.brains-heading {
  font-size: var(--font-size-h2); font-weight: 600;
  margin-bottom: var(--space-5);
  text-align: center;
}

.brains-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-4);
}

.brain-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  padding: var(--space-5);
  cursor: pointer;
  transition: box-shadow var(--transition-fast), border-color var(--transition-fast);
  text-decoration: none; color: inherit;
  display: block;
}
.brain-card:hover {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  border-color: var(--color-primary-light);
  text-decoration: none;
}
.brain-card:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}
.brain-card-name {
  font-size: var(--font-size-h3); font-weight: 600;
  margin-bottom: var(--space-2);
}
.brain-card-desc {
  font-size: var(--font-size-small); color: var(--color-text-light);
  line-height: 1.5;
  margin-bottom: var(--space-3);
}
.brain-card-badge {
  display: inline-flex; align-items: center; gap: var(--space-1);
  padding: 2px 10px;
  border-radius: var(--border-radius-pill);
  font-size: var(--font-size-caption); font-weight: 500;
  background: rgba(108, 92, 231, 0.1); color: var(--color-primary);
}

/* Skeleton loading for brain cards */
.brain-card-skeleton { cursor: default; pointer-events: none; }
.skeleton {
  background: linear-gradient(90deg, var(--color-border) 25%, rgba(255,255,255,0.4) 50%, var(--color-border) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--border-radius);
}
.skeleton-title { height: 20px; width: 60%; margin-bottom: var(--space-3); }
.skeleton-text { height: 14px; width: 90%; margin-bottom: var(--space-2); }
.skeleton-badge { height: 22px; width: 80px; border-radius: var(--border-radius-pill); }
@keyframes shimmer { 0% { background-position: 200% 0; } 100% { background-position: -200% 0; } }

/* Empty state (shared) */
.empty-state {
  text-align: center; padding: var(--space-7) var(--space-4);
  color: var(--color-text-light);
}
.empty-state svg { margin-bottom: var(--space-4); }
.empty-state h2 { font-size: var(--font-size-h3); font-weight: 600; color: var(--color-text); margin-bottom: var(--space-2); }
.empty-state p { font-size: var(--font-size-small); }

/* ============================================================
   Toast Notifications
   ============================================================ */

.toast-container {
  position: fixed; top: var(--space-4); right: var(--space-4);
  display: flex; flex-direction: column; gap: var(--space-2);
  z-index: 1000; max-width: 380px; width: calc(100% - var(--space-8));
}

.toast {
  display: flex; align-items: flex-start; gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.12);
  font-size: var(--font-size-small);
  animation: toast-in 200ms ease;
  border-left: 3px solid var(--color-text-light);
}
.toast-success { border-left-color: var(--color-success); }
.toast-error { border-left-color: var(--color-danger); }
.toast-warning { border-left-color: var(--color-warning); }
.toast-info { border-left-color: var(--color-primary); }

.toast-message { flex: 1; }
.toast-close {
  background: none; border: none; cursor: pointer;
  color: var(--color-text-light); font-size: var(--font-size-body);
  padding: 0; line-height: 1; min-width: 24px; min-height: 24px;
  display: flex; align-items: center; justify-content: center;
}
.toast-close:hover { color: var(--color-text); }

@keyframes toast-in {
  from { opacity: 0; transform: translateX(20px); }
  to { opacity: 1; transform: translateX(0); }
}
.toast.toast-out {
  animation: toast-out 200ms ease forwards;
}
@keyframes toast-out {
  from { opacity: 1; transform: translateX(0); }
  to { opacity: 0; transform: translateX(20px); }
}

/* ============================================================
   Pre-Chat Gate Modal
   ============================================================ */

.gate-overlay {
  position: fixed; inset: 0;
  background: rgba(0, 0, 0, 0.5);
  display: flex; align-items: center; justify-content: center;
  z-index: 100; padding: var(--space-4);
}
.gate-card {
  background: var(--color-surface);
  border-radius: var(--border-radius-lg);
  padding: var(--space-6);
  max-width: 420px; width: 100%;
  text-align: center;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
}
.gate-icon {
  margin-bottom: var(--space-4);
}
.gate-message {
  font-size: var(--font-size-body); font-weight: 500;
  margin-bottom: var(--space-5);
  line-height: 1.5;
}
.gate-cta {
  margin-bottom: var(--space-3);
}
.gate-skip {
  background: none; border: none; cursor: pointer;
  color: var(--color-text-light); font-size: var(--font-size-small);
  font-family: var(--font-family);
  text-decoration: underline;
}
.gate-skip:hover { color: var(--color-text); }

/* ============================================================
   Markdown Content in Bot Messages
   ============================================================ */

.message-content p { margin-bottom: var(--space-2); }
.message-content p:last-child { margin-bottom: 0; }
.message-content strong { font-weight: 600; }
.message-content em { font-style: italic; }
.message-content ul, .message-content ol {
  margin: var(--space-2) 0; padding-left: var(--space-5);
}
.message-content li { margin-bottom: var(--space-1); }
.message-content code {
  background: rgba(0, 0, 0, 0.06); padding: 1px 5px;
  border-radius: 3px; font-size: 0.85em;
  font-family: 'SF Mono', 'Menlo', 'Monaco', 'Courier New', monospace;
}
.message-content pre {
  background: #2D3436; color: #DFE6E9;
  padding: var(--space-3); border-radius: var(--border-radius);
  overflow-x: auto; margin: var(--space-2) 0;
  font-size: 0.85em; line-height: 1.6;
}
.message-content pre code {
  background: none; padding: 0; color: inherit;
  font-size: inherit;
}
.message-content blockquote {
  border-left: 3px solid var(--color-primary-light);
  padding-left: var(--space-3); margin: var(--space-2) 0;
  color: var(--color-text-light);
}

/* Message retry button */
.message-retry {
  display: inline-flex; align-items: center; gap: var(--space-1);
  color: var(--color-primary); background: none; border: none;
  cursor: pointer; font-family: var(--font-family);
  font-size: var(--font-size-caption); font-weight: 500;
  margin-top: var(--space-2);
}
.message-retry:hover { text-decoration: underline; }

/* Message error state */
.message-error {
  color: var(--color-danger); font-size: var(--font-size-caption);
  margin-top: var(--space-1);
}

/* Post-chat CTA card */
.post-chat-cta {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  padding: var(--space-5);
  text-align: center;
  align-self: center;
  max-width: 400px;
}
.post-chat-cta p {
  margin-bottom: var(--space-4);
  font-size: var(--font-size-small);
  color: var(--color-text-light);
}

/* ============================================================
   Responsive
   ============================================================ */

@media (max-width: 767px) {
  .message { max-width: 90%; }
  .chat-input-bar { padding: var(--space-2) var(--space-3); }
  .brains-grid { grid-template-columns: 1fr; }
  .toast-container { right: var(--space-2); left: var(--space-2); max-width: none; width: auto; }
}