/* Layout-only styling */

:root {
  --primary-color: #1f2937;
  --accent-color: #3b82f6;
  --text-primary: #1f2937;
  --text-secondary: #6b7280;
  --border-color: #e5e7eb;
  --background-color: #f9fafb;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
  font-family:
    -apple-system, BlinkMacSystemFont, "Segoe UI", "Roboto", "Oxygen", "Ubuntu",
    "Cantarell", "Fira Sans", "Droid Sans", "Helvetica Neue", sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  background-color: var(--background-color);
  color: var(--text-primary);
}

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

.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border-color);
  width: 100%;
}

.navbar__start {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.navbar__title h1 {
  margin: 0;
  font-size: 1rem;
  font-weight: 600;
}

.navbar-auth {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.user-info {
  font-size: 0.875rem;
}

.navbar__actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.navbar-menu summary {
  list-style: none;
  cursor: pointer;
}

.navbar-menu summary::-webkit-details-marker {
  display: none;
}

.navbar-menu__items {
  position: absolute;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding: 0.5rem;
  border: 1px solid var(--border-color);
  background: white;
}

.navbar-menu__action {
  padding: 0;
  border: none;
  background: none;
  text-align: left;
  font: inherit;
  color: inherit;
  cursor: pointer;
}

.main {
  flex: 1;
  padding: 1rem;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
}

.content {
  margin: 0 auto;
  max-width: 900px;
}

.btn {
  display: inline-block;
  padding: 0.5rem 0.75rem;
  border: none;
  border-radius: 0.25rem;
  font-size: 0.875rem;
  text-decoration: none;
  cursor: pointer;
  text-align: center;
}

.btn-primary {
  background-color: var(--accent-color);
  color: white;
}

.btn-login {
  background-color: var(--accent-color);
  color: white;
}

.btn-secondary {
  background-color: white;
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.btn-logout {
  background-color: transparent;
  color: inherit;
  border: 1px solid var(--border-color);
}

.login-prompt {
  text-align: center;
  padding: 3rem 1rem;
}

.login-prompt h2 {
  margin-top: 0;
  font-size: 1.875rem;
  color: var(--text-primary);
}

.login-prompt p {
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
}

.chat-page {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.session-panel__header h2,
.chat-panel__header h2,
.chat-panel__empty h2 {
  margin: 0;
}

.chat-page__subtitle,
.chat-panel__session-id,
.session-list__meta,
.session-panel__empty,
.session-panel__status,
.chat-panel__empty p {
  color: var(--text-secondary);
}

.chat-page__subtitle,
.chat-panel__session-id,
.chat-panel__empty p {
  margin: 0.25rem 0 1rem;
}

.chat-page__actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.chat-shell {
  display: flex;
  flex-direction: row;
  gap: 1rem;
  align-items: stretch;
  min-width: 0;
}

.chat-panel,
.session-panel {
  min-width: 0;
}

.chat-panel {
  flex: 1 1 auto;
}

.session-panel {
  flex: 0 0 280px;
}

.session-panel {
  padding: 0.75rem;
}

.session-panel__summary,
.chat-panel__footer {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
}

.session-panel__summary {
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.session-panel__close {
  border: 1px solid var(--border-color);
  background: white;
  cursor: pointer;
}

.session-panel__list {
  list-style: none;
  margin: 0.75rem 0 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.session-panel__item {
  margin: 0;
}

.session-panel__button {
  width: 100%;
  text-align: left;
  padding: 0.75rem;
  border: 1px solid var(--border-color);
  background: white;
  cursor: pointer;
}

.session-panel__button--active {
  border-color: var(--accent-color);
}

.session-panel__more {
  margin-top: 0.75rem;
}

.chat-panel {
  display: flex;
  flex-direction: column;
  min-height: 42rem;
  padding: 0.75rem;
}

.chat-panel__empty {
  margin: auto;
  text-align: center;
}

.message-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  flex: 1;
  margin-bottom: 0.75rem;
  min-height: 18rem;
}

.message-list__item {
  padding: 0.75rem;
  max-width: min(100%, 48rem);
}

.message-list__item strong,
.message-list__item p,
.message-list__content {
  margin: 0;
}

.message-list__item p,
.message-list__content {
  margin-top: 0.35rem;
  white-space: pre-wrap;
}

.message-list__item--user {
  align-self: flex-end;
}

.message-list__item--assistant {
  align-self: flex-start;
}

.composer {
  display: flex;
  gap: 0.75rem;
  align-items: center;
  width: 100%;
  min-width: 0;
}

.composer__input {
  flex: 1;
  min-width: 0;
  padding: 0.75rem;
  border: 1px solid var(--border-color);
  font: inherit;
}

.composer__model {
  flex: 0 0 12rem;
  padding: 0.75rem;
  border: 1px solid var(--border-color);
}

.composer__send {
  flex: 0 0 auto;
}

.chat-panel__footer {
  flex-wrap: wrap;
  margin-top: 0.75rem;
}

.composer__input:focus {
  outline: 2px solid rgba(59, 130, 246, 0.2);
  border-color: #60a5fa;
}

/* Responsive */
@media (max-width: 768px) {
  .main {
    padding: 1rem;
  }

  .composer {
    flex-wrap: wrap;
  }

  .composer__input,
  .composer__model,
  .composer .btn {
    width: 100%;
  }

  .chat-panel,
  .session-panel {
    min-height: auto;
  }

  .message-list__item {
    max-width: 100%;
  }
}