/* ============================================
   Messages styles — messages#index, messages#inbox
   Mobile-first, single breakpoint at 600px.
   Uses design tokens from application.css :root.
   ============================================ */

/* ============================================
   Page container
   ============================================ */
.messages-page {
  max-width: 40rem;
  margin: 0 auto;
  padding: var(--spacing-lg) var(--spacing-lg) 0;
  display: flex;
  flex-direction: column;
  min-height: calc(100vh - 3.75rem - env(safe-area-inset-bottom, 0));
}

/* ============================================
   Header
   ============================================ */
.messages-header {
  margin-bottom: var(--spacing-lg);
}

.messages-header h1 {
  font-size: 1.5rem;
  font-weight: var(--font-weight-bold);
  color: var(--color-accent);
  margin: 0;
  line-height: 1.3;
}

.messages-subtitle {
  font-size: 0.875rem;
  color: var(--color-muted);
  margin: var(--spacing-xs) 0 0;
}

.messages-back {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  font-size: 0.875rem;
  font-weight: var(--font-weight-medium);
  color: var(--color-gold);
  margin-bottom: var(--spacing-sm);
}

.messages-back:hover {
  color: var(--color-gold-hover);
}

/* ============================================
   Thread container
   ============================================ */
.messages-thread {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  padding-bottom: var(--spacing-md);
  overflow-y: auto;
}

/* ============================================
   Empty state
   ============================================ */
.messages-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  flex: 1;
  padding: var(--spacing-3xl) 0;
  text-align: center;
}

.messages-empty-icon {
  color: var(--color-border);
  margin-bottom: var(--spacing-md);
}

.messages-empty p {
  color: var(--color-muted);
  font-size: 0.9375rem;
  margin: 0;
}

/* ============================================
   Message bubble — sent (right) and received (left)
   ============================================ */
.message-bubble {
  max-width: 80%;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius);
  word-wrap: break-word;
  overflow-wrap: break-word;
}

.message-bubble--sent {
  align-self: flex-end;
  background: var(--color-accent);
  color: #ffffff;
  border-bottom-right-radius: var(--radius-sm);
}

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

.message-body {
  font-size: 0.9375rem;
  line-height: 1.5;
}

.message-body p {
  margin: 0;
}

.message-body p + p {
  margin-top: var(--spacing-xs);
}

.message-meta {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-xs);
  font-size: 0.6875rem;
}

.message-bubble--sent .message-meta {
  color: rgba(255, 255, 255, 0.7);
  justify-content: flex-end;
}

.message-bubble--received .message-meta {
  color: var(--color-muted);
}

.message-sender {
  font-weight: var(--font-weight-semibold);
}

/* ============================================
   Compose form — fixed at bottom of thread
   ============================================ */
.messages-compose {
  position: sticky;
  bottom: 0;
  background: var(--color-bg);
  padding: var(--spacing-md) 0 var(--spacing-md);
  border-top: 1px solid var(--color-border);
}

.messages-form-error {
  background: var(--color-danger-light);
  color: var(--color-danger);
  border: 1px solid var(--color-danger);
  border-radius: var(--radius-sm);
  padding: var(--spacing-xs) var(--spacing-sm);
  margin-bottom: var(--spacing-sm);
  font-size: 0.8125rem;
  font-weight: var(--font-weight-medium);
}

.messages-compose-row {
  display: flex;
  gap: var(--spacing-sm);
  align-items: flex-end;
}

.messages-input {
  flex: 1;
  display: block;
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  font-family: var(--font-body);
  font-size: 0.9375rem;
  line-height: 1.5;
  color: var(--color-text);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  resize: none;
  min-height: 2.5rem;
  max-height: 8rem;
  box-sizing: border-box;
  transition: border-color 150ms ease;
}

.messages-input:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 2px rgba(27, 42, 74, 0.12);
}

.messages-send {
  flex-shrink: 0;
  padding: 0.5rem 1.25rem;
  font-size: 0.875rem;
  min-height: 2.5rem;
}

/* ============================================
   Admin inbox list
   ============================================ */
.inbox-list {
  display: flex;
  flex-direction: column;
}

.inbox-thread {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  border-bottom: 1px solid var(--color-border);
  text-decoration: none;
  color: var(--color-text);
  transition: background 150ms ease;
}

.inbox-thread:hover {
  background: var(--color-accent-light);
  color: var(--color-text);
}

.inbox-thread:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: -2px;
  border-radius: var(--radius-sm);
}

.inbox-avatar {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  height: 2.75rem;
  background: var(--color-accent);
  color: #ffffff;
  font-size: 0.875rem;
  font-weight: var(--font-weight-bold);
  border-radius: 50%;
  letter-spacing: 0.02em;
}

.inbox-thread-content {
  flex: 1;
  min-width: 0;
}

.inbox-thread-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--spacing-sm);
}

.inbox-thread-name {
  font-size: 0.9375rem;
  font-weight: var(--font-weight-semibold);
  color: var(--color-accent);
}

.inbox-thread-time {
  font-size: 0.75rem;
  color: var(--color-muted);
  white-space: nowrap;
}

.inbox-thread-business {
  display: block;
  font-size: 0.75rem;
  color: var(--color-muted);
  margin-top: 0.125rem;
}

.inbox-thread-preview {
  font-size: 0.8125rem;
  color: var(--color-muted);
  margin: var(--spacing-xs) 0 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  line-height: 1.4;
}

/* ============================================
   Desktop breakpoint (600px+)
   ============================================ */
@media (min-width: 600px) {
  .messages-page {
    padding: var(--spacing-xl) var(--spacing-lg) 0;
  }

  .messages-header h1 {
    font-size: 1.75rem;
  }

  .message-bubble {
    max-width: 70%;
  }

  .inbox-thread {
    padding: var(--spacing-md) var(--spacing-lg);
  }
}

/* ============================================
   Reduced motion
   ============================================ */
@media (prefers-reduced-motion: reduce) {
  .inbox-thread,
  .messages-input {
    transition-duration: 0s;
  }
}