/**
 * CMOC Chat — Frontend Styles
 *
 * Responsive chat UI for the Content Media Order Chat plugin.
 * Breakpoints:
 *   Desktop : >= 1024px  — two-column layout (messages 60 %, order 40 %)
 *   Tablet  : 768–1023px — two-column layout (messages 55 %, order 45 %)
 *   Mobile  : < 768px    — single column, messages on top, order below
 *
 * @package ContentMediaOrderChat
 * @since   1.0.0
 * Validates: Requirements 11.7
 */

/* =========================================================================
   CSS Custom Properties (theming tokens)
   ========================================================================= */
.cmoc-chat-page {
  /* Brand / primary */
  --cmoc-primary:          #0071a1;
  --cmoc-primary-dark:     #005a80;
  --cmoc-primary-light:    #e8f4f8;

  /* Own-message bubble */
  --cmoc-bubble-own-bg:    #0071a1;
  --cmoc-bubble-own-text:  #ffffff;

  /* Other-message bubble */
  --cmoc-bubble-other-bg:  #f0f0f0;
  --cmoc-bubble-other-text:#1a1a1a;

  /* System message */
  --cmoc-system-text:      #888888;

  /* Read-only notice */
  --cmoc-readonly-bg:      #fff8e1;
  --cmoc-readonly-border:  #f9a825;
  --cmoc-readonly-text:    #5d4037;

  /* Status colours */
  --cmoc-error-bg:         #fdecea;
  --cmoc-error-text:       #c62828;
  --cmoc-warning-bg:       #fff8e1;
  --cmoc-warning-text:     #e65100;
  --cmoc-success-bg:       #e8f5e9;
  --cmoc-success-text:     #2e7d32;

  /* Layout */
  --cmoc-border:           #e0e0e0;
  --cmoc-radius:           8px;
  --cmoc-shadow:           0 2px 8px rgba(0, 0, 0, 0.08);
  --cmoc-msg-list-height:  480px;
  --cmoc-font:             -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, sans-serif;
}

/* =========================================================================
   Base container
   ========================================================================= */
.cmoc-chat-page {
  font-family: var(--cmoc-font);
  font-size: 14px;
  line-height: 1.5;
  color: #1a1a1a;
  box-sizing: border-box;
  width: 100%;
}

.cmoc-chat-page *,
.cmoc-chat-page *::before,
.cmoc-chat-page *::after {
  box-sizing: inherit;
}

/* =========================================================================
   Two-column layout
   ========================================================================= */
.cmoc-chat-page__layout {
  display: flex;
  gap: 20px;
  align-items: flex-start;
  width: 100%;
}

/* Left column — messages */
.cmoc-chat-page__messages-col {
  flex: 0 0 60%;
  min-width: 0;
  display: flex;
  flex-direction: column;
  background: #ffffff;
  border: 1px solid var(--cmoc-border);
  border-radius: var(--cmoc-radius);
  box-shadow: var(--cmoc-shadow);
  overflow: hidden;
}

/* Right column — order details */
.cmoc-chat-page__order-col {
  flex: 0 0 40%;
  min-width: 0;
}

/* =========================================================================
   Messages header (title + search + report button)
   ========================================================================= */
.cmoc-chat-page__messages-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  padding: 14px 16px;
  border-bottom: 1px solid var(--cmoc-border);
  background: #fafafa;
}

.cmoc-chat-page__title {
  font-size: 16px;
  font-weight: 600;
  margin: 0;
  flex: 1 1 auto;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* =========================================================================
   Search bar
   ========================================================================= */
.cmoc-chat-page__search {
  display: flex;
  align-items: center;
  gap: 4px;
  flex: 0 1 260px;
}

.cmoc-chat-page__search-input {
  flex: 1;
  padding: 6px 10px;
  border: 1px solid var(--cmoc-border);
  border-radius: 20px;
  font-size: 13px;
  outline: none;
  transition: border-color 0.2s;
}

.cmoc-chat-page__search-input:focus {
  border-color: var(--cmoc-primary);
}

.cmoc-chat-page__search-btn,
.cmoc-chat-page__search-clear {
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px 6px;
  font-size: 16px;
  line-height: 1;
  color: #666;
  border-radius: 50%;
  transition: background 0.15s;
}

.cmoc-chat-page__search-btn:hover,
.cmoc-chat-page__search-clear:hover {
  background: var(--cmoc-primary-light);
  color: var(--cmoc-primary);
}

/* =========================================================================
   Report user button
   ========================================================================= */
.cmoc-chat-page__report-btn {
  flex: 0 0 auto;
  padding: 6px 12px;
  background: none;
  border: 1px solid #e53935;
  color: #e53935;
  border-radius: 20px;
  font-size: 12px;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
  white-space: nowrap;
}

.cmoc-chat-page__report-btn:hover {
  background: #e53935;
  color: #ffffff;
}

/* =========================================================================
   Read-only notice
   ========================================================================= */
.cmoc-chat-page__readonly-notice {
  padding: 10px 16px;
  background: var(--cmoc-readonly-bg);
  border-bottom: 2px solid var(--cmoc-readonly-border);
  color: var(--cmoc-readonly-text);
  font-size: 13px;
}

.cmoc-chat-page__readonly-notice p {
  margin: 0;
}

/* =========================================================================
   Search results panel
   ========================================================================= */
.cmoc-chat-page__search-results {
  padding: 10px 16px;
  border-bottom: 1px solid var(--cmoc-border);
  background: #fafafa;
  max-height: 260px;
  overflow-y: auto;
}

.cmoc-chat-page__search-results-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
  font-size: 12px;
  font-weight: 600;
  color: #555;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.cmoc-chat-page__search-results-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.cmoc-chat-page__search-result-item {
  padding: 8px 10px;
  border-radius: var(--cmoc-radius);
  cursor: pointer;
  font-size: 13px;
  transition: background 0.15s;
  border-bottom: 1px solid var(--cmoc-border);
}

.cmoc-chat-page__search-result-item:last-child {
  border-bottom: none;
}

.cmoc-chat-page__search-result-item:hover {
  background: var(--cmoc-primary-light);
}

.cmoc-chat-page__search-no-results {
  margin: 0;
  font-size: 13px;
  color: var(--cmoc-system-text);
  text-align: center;
  padding: 8px 0;
}

/* =========================================================================
   Message list wrapper + scroll area
   ========================================================================= */
.cmoc-chat-page__message-list-wrap {
  flex: 1 1 auto;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.cmoc-chat-page__load-more-wrap {
  text-align: center;
  padding: 8px 16px 0;
}

.cmoc-chat-page__load-more {
  background: none;
  border: 1px solid var(--cmoc-border);
  border-radius: 20px;
  padding: 5px 16px;
  font-size: 12px;
  color: var(--cmoc-primary);
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s;
}

.cmoc-chat-page__load-more:hover {
  background: var(--cmoc-primary-light);
  border-color: var(--cmoc-primary);
}

.cmoc-chat-page__message-list {
  list-style: none;
  margin: 0;
  padding: 16px;
  height: var(--cmoc-msg-list-height);
  overflow-y: scroll;
  display: flex;
  flex-direction: column;
  gap: 12px;
  scroll-behavior: smooth;
}

/* =========================================================================
   Individual messages
   ========================================================================= */
.cmoc-chat-page__message {
  display: flex;
  flex-direction: column;
  max-width: 75%;
}

/* Own messages — right-aligned */
.cmoc-chat-page__message--own {
  align-self: flex-end;
  align-items: flex-end;
}

/* Other messages — left-aligned */
.cmoc-chat-page__message--other {
  align-self: flex-start;
  align-items: flex-start;
}

/* System messages — centered */
.cmoc-chat-page__message--system {
  align-self: center;
  align-items: center;
  max-width: 90%;
}

/* Message meta (author + time) */
.cmoc-chat-page__message-meta {
  display: flex;
  gap: 6px;
  align-items: baseline;
  margin-bottom: 3px;
  font-size: 11px;
  color: #888;
}

.cmoc-chat-page__message-author {
  font-weight: 600;
  color: #555;
}

.cmoc-chat-page__message-time {
  font-size: 10px;
}

/* Message bubble */
.cmoc-chat-page__message-body {
  padding: 8px 12px;
  border-radius: var(--cmoc-radius);
  font-size: 14px;
  line-height: 1.5;
  word-break: break-word;
  white-space: pre-wrap;
}

.cmoc-chat-page__message--own .cmoc-chat-page__message-body {
  background: var(--cmoc-bubble-own-bg);
  color: var(--cmoc-bubble-own-text);
  border-bottom-right-radius: 2px;
}

.cmoc-chat-page__message--other .cmoc-chat-page__message-body {
  background: var(--cmoc-bubble-other-bg);
  color: var(--cmoc-bubble-other-text);
  border-bottom-left-radius: 2px;
}

.cmoc-chat-page__message--system .cmoc-chat-page__message-body {
  background: transparent;
  color: var(--cmoc-system-text);
  font-style: italic;
  font-size: 12px;
  padding: 4px 8px;
}

/* Attachment link */
.cmoc-chat-page__message-attachment {
  margin-top: 4px;
  font-size: 12px;
}

.cmoc-chat-page__message-attachment a {
  color: inherit;
  text-decoration: underline;
  opacity: 0.85;
}

.cmoc-chat-page__message-attachment a:hover {
  opacity: 1;
}

/* Empty state */
.cmoc-chat-page__message-empty {
  align-self: center;
  color: var(--cmoc-system-text);
  font-style: italic;
  font-size: 13px;
  text-align: center;
  padding: 24px 0;
}

/* =========================================================================
   Compose area (sticky at bottom of messages column)
   ========================================================================= */
.cmoc-chat-page__compose {
  border-top: 1px solid var(--cmoc-border);
  padding: 12px 16px;
  background: #ffffff;
  position: sticky;
  bottom: 0;
}

/* Attachment preview bar */
.cmoc-chat-page__attachment-preview {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
  background: var(--cmoc-primary-light);
  border-radius: var(--cmoc-radius);
  margin-bottom: 8px;
  font-size: 12px;
}

.cmoc-chat-page__attachment-name {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: var(--cmoc-primary-dark);
}

.cmoc-chat-page__attachment-remove {
  background: none;
  border: none;
  cursor: pointer;
  font-size: 16px;
  line-height: 1;
  color: #888;
  padding: 0 2px;
  transition: color 0.15s;
}

.cmoc-chat-page__attachment-remove:hover {
  color: #e53935;
}

/* Compose row: textarea + action buttons */
.cmoc-chat-page__compose-row {
  display: flex;
  align-items: flex-end;
  gap: 8px;
}

.cmoc-chat-page__message-input {
  flex: 1;
  resize: none;
  padding: 8px 12px;
  border: 1px solid var(--cmoc-border);
  border-radius: var(--cmoc-radius);
  font-family: var(--cmoc-font);
  font-size: 14px;
  line-height: 1.5;
  outline: none;
  transition: border-color 0.2s;
  min-height: 60px;
  max-height: 160px;
  overflow-y: auto;
}

.cmoc-chat-page__message-input:focus {
  border-color: var(--cmoc-primary);
}

.cmoc-chat-page__compose-actions {
  display: flex;
  flex-direction: column;
  gap: 6px;
  align-items: center;
}

/* Attach button (label acting as button) */
.cmoc-chat-page__attach-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: #f5f5f5;
  border: 1px solid var(--cmoc-border);
  cursor: pointer;
  font-size: 18px;
  transition: background 0.15s, border-color 0.15s;
}

.cmoc-chat-page__attach-btn:hover {
  background: var(--cmoc-primary-light);
  border-color: var(--cmoc-primary);
}

/* Hidden file input */
.cmoc-chat-page__file-input {
  display: none;
}

/* Send button */
.cmoc-chat-page__send-btn {
  padding: 8px 18px;
  background: var(--cmoc-primary);
  color: #ffffff;
  border: none;
  border-radius: var(--cmoc-radius);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s;
  white-space: nowrap;
}

.cmoc-chat-page__send-btn:hover {
  background: var(--cmoc-primary-dark);
}

.cmoc-chat-page__send-btn:disabled {
  background: #b0bec5;
  cursor: not-allowed;
}

/* Character counter */
.cmoc-chat-page__char-count {
  margin-top: 4px;
  font-size: 11px;
  color: #999;
  text-align: right;
}

.cmoc-chat-page__char-remaining--low {
  color: #e53935;
  font-weight: 600;
}

/* Compose status messages */
.cmoc-chat-page__compose-status {
  margin-top: 6px;
  padding: 6px 10px;
  border-radius: var(--cmoc-radius);
  font-size: 12px;
}

.cmoc-chat-page__compose-status--error {
  background: var(--cmoc-error-bg);
  color: var(--cmoc-error-text);
}

.cmoc-chat-page__compose-status--warning {
  background: var(--cmoc-warning-bg);
  color: var(--cmoc-warning-text);
}

.cmoc-chat-page__compose-status--success {
  background: var(--cmoc-success-bg);
  color: var(--cmoc-success-text);
}

/* =========================================================================
   Order details card (right column)
   ========================================================================= */
.cmoc-chat-page__order-card {
  background: #ffffff;
  border: 1px solid var(--cmoc-border);
  border-radius: var(--cmoc-radius);
  box-shadow: var(--cmoc-shadow);
  padding: 20px;
}

.cmoc-chat-page__order-title {
  font-size: 16px;
  font-weight: 600;
  margin: 0 0 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--cmoc-border);
}

/* Order metadata definition list */
.cmoc-chat-page__order-meta {
  margin: 0 0 16px;
  padding: 0;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 6px 12px;
  font-size: 13px;
}

.cmoc-chat-page__order-meta dt {
  font-weight: 600;
  color: #555;
  white-space: nowrap;
}

.cmoc-chat-page__order-meta dd {
  margin: 0;
  color: #1a1a1a;
}

/* Order status badge */
.cmoc-chat-page__order-status {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 12px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  background: #e0e0e0;
  color: #555;
}

.cmoc-chat-page__order-status--processing {
  background: #e3f2fd;
  color: #1565c0;
}

.cmoc-chat-page__order-status--completed {
  background: #e8f5e9;
  color: #2e7d32;
}

.cmoc-chat-page__order-status--cancelled,
.cmoc-chat-page__order-status--refunded {
  background: #fdecea;
  color: #c62828;
}

.cmoc-chat-page__order-status--on-hold {
  background: #fff8e1;
  color: #e65100;
}

/* Product list */
.cmoc-chat-page__order-items {
  margin-bottom: 16px;
}

.cmoc-chat-page__order-items-title {
  font-size: 13px;
  font-weight: 600;
  margin: 0 0 8px;
  color: #555;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.cmoc-chat-page__order-items-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.cmoc-chat-page__order-item {
  padding: 8px 10px;
  background: #fafafa;
  border: 1px solid var(--cmoc-border);
  border-radius: var(--cmoc-radius);
  font-size: 13px;
}

.cmoc-chat-page__order-item-name {
  font-weight: 600;
  margin-bottom: 2px;
}

.cmoc-chat-page__order-item-name a {
  color: var(--cmoc-primary);
  text-decoration: none;
}

.cmoc-chat-page__order-item-name a:hover {
  text-decoration: underline;
}

.cmoc-chat-page__order-item-qty,
.cmoc-chat-page__order-item-total {
  color: #666;
  font-size: 12px;
}

/* Link to order detail */
.cmoc-chat-page__order-link {
  margin-top: 12px;
  text-align: right;
}

.cmoc-chat-page__order-link a {
  font-size: 13px;
  color: var(--cmoc-primary);
  text-decoration: none;
}

.cmoc-chat-page__order-link a:hover {
  text-decoration: underline;
}

/* =========================================================================
   Report user modal
   ========================================================================= */
.cmoc-chat-page__report-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 9998;
}

.cmoc-chat-page__report-modal {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
}

.cmoc-chat-page__report-modal-inner {
  background: #ffffff;
  border-radius: var(--cmoc-radius);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
  padding: 28px 24px 24px;
  width: 100%;
  max-width: 480px;
  position: relative;
}

.cmoc-chat-page__report-modal-close {
  position: absolute;
  top: 12px;
  right: 14px;
  background: none;
  border: none;
  font-size: 22px;
  line-height: 1;
  cursor: pointer;
  color: #888;
  padding: 2px 6px;
  border-radius: 50%;
  transition: background 0.15s, color 0.15s;
}

.cmoc-chat-page__report-modal-close:hover {
  background: #f5f5f5;
  color: #333;
}

.cmoc-chat-page__report-modal-title {
  font-size: 18px;
  font-weight: 600;
  margin: 0 0 8px;
}

.cmoc-chat-page__report-modal-desc {
  font-size: 13px;
  color: #666;
  margin: 0 0 16px;
}

.cmoc-chat-page__report-field {
  margin-bottom: 14px;
}

.cmoc-chat-page__report-field label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 6px;
}

.cmoc-chat-page__report-reason {
  width: 100%;
  padding: 8px 12px;
  border: 1px solid var(--cmoc-border);
  border-radius: var(--cmoc-radius);
  font-family: var(--cmoc-font);
  font-size: 14px;
  resize: vertical;
  outline: none;
  transition: border-color 0.2s;
}

.cmoc-chat-page__report-reason:focus {
  border-color: var(--cmoc-primary);
}

.cmoc-chat-page__report-status {
  margin-bottom: 10px;
  padding: 6px 10px;
  border-radius: var(--cmoc-radius);
  font-size: 12px;
}

.cmoc-chat-page__report-actions {
  display: flex;
  gap: 10px;
  justify-content: flex-end;
}

.cmoc-chat-page__report-submit {
  padding: 8px 20px;
  background: var(--cmoc-primary);
  color: #ffffff;
  border: none;
  border-radius: var(--cmoc-radius);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s;
}

.cmoc-chat-page__report-submit:hover {
  background: var(--cmoc-primary-dark);
}

.cmoc-chat-page__report-submit:disabled {
  background: #b0bec5;
  cursor: not-allowed;
}

.cmoc-chat-page__report-cancel {
  padding: 8px 20px;
  background: none;
  border: 1px solid var(--cmoc-border);
  border-radius: var(--cmoc-radius);
  font-size: 14px;
  cursor: pointer;
  color: #555;
  transition: background 0.15s, border-color 0.15s;
}

.cmoc-chat-page__report-cancel:hover {
  background: #f5f5f5;
  border-color: #bbb;
}

/* =========================================================================
   Error state (no chat found)
   ========================================================================= */
.cmoc-chat-page__error {
  padding: 32px;
  text-align: center;
  color: #555;
}

.cmoc-chat-page__error a {
  color: var(--cmoc-primary);
  text-decoration: none;
}

.cmoc-chat-page__error a:hover {
  text-decoration: underline;
}

/* =========================================================================
   Utility: visually hidden (screen-reader only)
   ========================================================================= */
.screen-reader-text {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* =========================================================================
   RESPONSIVE — Tablet (768px – 1023px)
   ========================================================================= */
@media (min-width: 768px) and (max-width: 1023px) {
  .cmoc-chat-page__messages-col {
    flex: 0 0 55%;
  }

  .cmoc-chat-page__order-col {
    flex: 0 0 45%;
  }

  .cmoc-chat-page__message-list {
    height: 400px;
  }

  .cmoc-chat-page__message {
    max-width: 85%;
  }
}

/* =========================================================================
   RESPONSIVE — Mobile (< 768px)
   ========================================================================= */
@media (max-width: 767px) {
  .cmoc-chat-page__layout {
    flex-direction: column;
    gap: 16px;
  }

  .cmoc-chat-page__messages-col,
  .cmoc-chat-page__order-col {
    flex: 0 0 100%;
    width: 100%;
  }

  .cmoc-chat-page__messages-header {
    flex-wrap: wrap;
    gap: 8px;
  }

  .cmoc-chat-page__title {
    font-size: 15px;
    flex: 1 1 100%;
  }

  .cmoc-chat-page__search {
    flex: 1 1 auto;
  }

  .cmoc-chat-page__report-btn {
    flex: 0 0 auto;
  }

  .cmoc-chat-page__message-list {
    height: 340px;
  }

  .cmoc-chat-page__message {
    max-width: 90%;
  }

  .cmoc-chat-page__compose {
    padding: 10px 12px;
  }

  .cmoc-chat-page__send-btn {
    padding: 8px 12px;
    font-size: 13px;
  }

  .cmoc-chat-page__order-card {
    padding: 16px;
  }

  .cmoc-chat-page__order-meta {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .cmoc-chat-page__order-meta dt {
    margin-top: 8px;
  }

  .cmoc-chat-page__order-meta dt:first-child {
    margin-top: 0;
  }

  .cmoc-chat-page__report-modal-inner {
    padding: 20px 16px 16px;
  }

  .cmoc-chat-page__report-actions {
    flex-direction: column-reverse;
  }

  .cmoc-chat-page__report-submit,
  .cmoc-chat-page__report-cancel {
    width: 100%;
    text-align: center;
  }
}

/* =========================================================================
   RESPONSIVE — Desktop (>= 1024px) — explicit overrides if needed
   ========================================================================= */
@media (min-width: 1024px) {
  .cmoc-chat-page__messages-col {
    flex: 0 0 60%;
  }

  .cmoc-chat-page__order-col {
    flex: 0 0 40%;
  }
}