/* ============================================================================
   QOPS WhatsApp Suite — Design Tokens & Styles
   Brand Discovery Sources:
     - alqalam.ae (primary blue #2872fa, navy #192a3d, slate #3A4F66)
     - QOPS Dashboard (HSL vars: primary 222 47% 22%, accent 188 82% 42%)
   Merged: QOPS dashboard HSL system + alqalam.ae brand palette
   ============================================================================ */

/* ---------- DESIGN TOKENS ---------- */
:root {
  /* Primary palette (from QOPS dashboard + alqalam.ae) */
  --color-primary:       hsl(222, 47%, 22%);   /* #1B3A5C — navy, navbar/headers */
  --color-primary-fg:    hsl(210, 40%, 98%);   /* #F5F8FA — text on primary */
  --color-accent:        hsl(188, 82%, 42%);   /* #13B8A4 — teal, buttons/links */
  --color-accent-hover:  hsl(188, 82%, 36%);   /* darker teal on hover */
  --color-accent-fg:     hsl(0, 0%, 100%);     /* white on accent */

  /* Backgrounds & surfaces */
  --color-bg:            hsl(222, 30%, 98%);   /* #F6F7FA — page background */
  --color-surface:       hsl(0, 0%, 100%);     /* #FFFFFF — cards, panels */
  --color-surface-alt:   hsl(210, 40%, 96%);   /* #EFF3F8 — alt surface / sidebar */
  --color-border:        hsl(214, 25%, 88%);   /* #D8DEE8 — borders */
  --color-input:         hsl(214, 25%, 88%);   /* form input borders */

  /* Text */
  --color-text:          hsl(222, 35%, 12%);   /* #181D27 — primary text */
  --color-text-secondary:hsl(215, 20%, 44%);   /* #5F7A95 — muted/secondary */
  --color-text-muted:    hsl(210, 15%, 60%);   /* #8899AA — timestamps, hints */

  /* Semantic */
  --color-success:       hsl(145, 63%, 42%);   /* #27AE60 */
  --color-warning:       hsl(36, 100%, 50%);   /* #FF9500 */
  --color-danger:        hsl(0, 72%, 50%);     /* #E74C3C */
  --color-info:          hsl(210, 100%, 56%);  /* #2196F3 */

  /* WhatsApp brand */
  --color-wa-green:      hsl(142, 70%, 40%);   /* #25D366 approx */
  --color-wa-light:      hsl(142, 70%, 95%);   /* light green tint */
  --color-bubble-out:    hsl(142, 45%, 90%);   /* outgoing bubble */
  --color-bubble-in:     hsl(0, 0%, 100%);     /* incoming bubble */

  /* Typography (Space Grotesk from QOPS + system fallback) */
  --font-family-en: 'Space Grotesk', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-family-ar: 'IBM Plex Sans Arabic', 'Segoe UI', Tahoma, sans-serif;
  --font-mono:      'JetBrains Mono', ui-monospace, SFMono-Regular, monospace;
  --font-size-base: 14px;
  --font-size-sm:   12px;
  --font-size-xs:   11px;
  --font-size-lg:   16px;
  --font-size-xl:   20px;
  --font-size-2xl:  24px;
  --line-height:    1.6;

  /* Spacing scale (4px base) */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;

  /* Radii & shadows (from QOPS --radius: 12px) */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-pill: 9999px;
  --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.08);
  --shadow-md: 0 4px 12px rgba(15, 23, 42, 0.10);
  --shadow-lg: 0 10px 30px -20px rgba(15, 23, 42, 0.45);

  /* Layout */
  --sidebar-width: 340px;
  --navbar-height: 56px;
  --stats-height: 48px;
}

/* ---------- RTL SUPPORT ---------- */
.rtl {
  direction: rtl;
  font-family: var(--font-family-ar);
}
.rtl .msg-bubble { direction: rtl; text-align: right; }
.rtl .sidebar { border-right: none; border-left: 1px solid var(--color-border); }

/* ---------- RESET & BASE ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: var(--font-size-base); }
body {
  font-family: var(--font-family-en);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: var(--line-height);
  -webkit-font-smoothing: antialiased;
  height: 100vh;
  overflow: hidden;
}
a { color: var(--color-accent); text-decoration: none; }
a:hover { color: var(--color-accent-hover); }
input, select, textarea, button { font-family: inherit; font-size: inherit; }

/* ---------- LAYOUT ---------- */
.app-shell {
  display: flex;
  flex-direction: column;
  height: 100vh;
}

/* Navbar */
.navbar {
  height: var(--navbar-height);
  background: var(--color-primary);
  color: var(--color-primary-fg);
  display: flex;
  align-items: center;
  padding: 0 var(--space-6);
  gap: var(--space-4);
  flex-shrink: 0;
  box-shadow: var(--shadow-sm);
  z-index: 10;
}
.navbar-logo { height: 32px; }
.navbar-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  letter-spacing: -0.01em;
}
.navbar-spacer { flex: 1; }
.navbar-status {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--font-size-sm);
  opacity: 0.85;
}
.navbar-status .dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--color-danger);
}
.navbar-status .dot.connected { background: var(--color-success); }
.navbar-lang {
  background: rgba(255,255,255,0.15);
  border: none;
  color: var(--color-primary-fg);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: var(--font-size-sm);
}

/* Stats bar */
.stats-bar {
  height: var(--stats-height);
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  padding: 0 var(--space-6);
  gap: var(--space-8);
  flex-shrink: 0;
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}
.stat-item { display: flex; align-items: center; gap: var(--space-2); }
.stat-value { font-weight: 600; color: var(--color-text); font-size: var(--font-size-lg); }

/* Main split */
.main-content {
  display: flex;
  flex: 1;
  overflow: hidden;
}

/* ---------- SIDEBAR / INBOX ---------- */
.sidebar {
  width: var(--sidebar-width);
  background: var(--color-surface);
  border-right: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
}
.sidebar-header {
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}
.sidebar-search {
  flex: 1;
  padding: var(--space-2) var(--space-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  background: var(--color-bg);
  outline: none;
  font-size: var(--font-size-sm);
}
.sidebar-search:focus { border-color: var(--color-accent); }

.contact-list {
  flex: 1;
  overflow-y: auto;
  list-style: none;
}
.contact-item {
  padding: var(--space-3) var(--space-4);
  display: flex;
  align-items: center;
  gap: var(--space-3);
  cursor: pointer;
  border-bottom: 1px solid var(--color-border);
  transition: background 0.15s;
}
.contact-item:hover, .contact-item.active {
  background: var(--color-surface-alt);
}
.contact-avatar {
  width: 44px; height: 44px;
  border-radius: 50%;
  background: var(--color-accent);
  color: var(--color-accent-fg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: var(--font-size-lg);
  flex-shrink: 0;
}
.contact-info { flex: 1; min-width: 0; }
.contact-name {
  font-weight: 600;
  font-size: var(--font-size-base);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.contact-snippet {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.contact-meta {
  text-align: right;
  flex-shrink: 0;
}
.contact-time {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}
.contact-badge {
  display: inline-block;
  min-width: 18px;
  height: 18px;
  line-height: 18px;
  text-align: center;
  border-radius: var(--radius-pill);
  background: var(--color-accent);
  color: var(--color-accent-fg);
  font-size: var(--font-size-xs);
  font-weight: 600;
  margin-top: 2px;
}

/* ---------- CHAT PANEL ---------- */
.chat-panel {
  flex: 1;
  display: flex;
  flex-direction: column;
  background: var(--color-bg);
}
.chat-header {
  padding: var(--space-3) var(--space-6);
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  gap: var(--space-3);
}
.chat-header-name { font-weight: 600; }
.chat-header-phone { font-size: var(--font-size-sm); color: var(--color-text-muted); font-family: var(--font-mono); }

.chat-empty {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  gap: var(--space-4);
}
.chat-empty svg { width: 80px; height: 80px; opacity: 0.3; }

.chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-4) var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

/* Message bubbles */
.msg-row { display: flex; }
.msg-row.outgoing { justify-content: flex-end; }
.msg-bubble {
  max-width: 65%;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  font-size: var(--font-size-base);
  line-height: 1.5;
  position: relative;
  word-wrap: break-word;
}
.msg-row.incoming .msg-bubble {
  background: var(--color-bubble-in);
  border: 1px solid var(--color-border);
  border-bottom-left-radius: var(--space-1);
}
.msg-row.outgoing .msg-bubble {
  background: var(--color-bubble-out);
  border-bottom-right-radius: var(--space-1);
}
.msg-time {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  margin-top: 2px;
  display: flex;
  align-items: center;
  gap: 4px;
  justify-content: flex-end;
}
.msg-status { font-size: 13px; }
.msg-status.delivered { color: var(--color-text-muted); }
.msg-status.read { color: var(--color-info); }

/* Date separator */
.date-sep {
  text-align: center;
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  padding: var(--space-3) 0;
}
.date-sep span {
  background: var(--color-surface);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-pill);
  box-shadow: var(--shadow-sm);
}

/* ---------- COMPOSE BAR ---------- */
.compose-bar {
  padding: var(--space-3) var(--space-6);
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  display: flex;
  gap: var(--space-3);
  align-items: flex-end;
}
.compose-input {
  flex: 1;
  padding: var(--space-2) var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-bg);
  outline: none;
  resize: none;
  min-height: 40px;
  max-height: 120px;
  line-height: 1.5;
}
.compose-input:focus { border-color: var(--color-accent); }
.compose-send {
  height: 40px;
  padding: 0 var(--space-5);
  background: var(--color-accent);
  color: var(--color-accent-fg);
  border: none;
  border-radius: var(--radius-lg);
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s;
  white-space: nowrap;
}
.compose-send:hover { background: var(--color-accent-hover); }
.compose-send:disabled { opacity: 0.5; cursor: not-allowed; }

/* ---------- SEND FORM (right panel, no chat selected) ---------- */
.send-form-panel {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-8);
}
.send-form {
  width: 100%;
  max-width: 480px;
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow-md);
}
.send-form h2 {
  font-size: var(--font-size-xl);
  font-weight: 600;
  margin-bottom: var(--space-4);
}
.form-group { margin-bottom: var(--space-4); }
.form-label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-1);
}
.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: var(--space-2) var(--space-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg);
  outline: none;
  transition: border-color 0.15s;
}
.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-color: var(--color-accent);
}
.form-textarea { min-height: 100px; resize: vertical; }
.form-hint {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  margin-top: var(--space-1);
}
.btn-primary {
  width: 100%;
  padding: var(--space-3);
  background: var(--color-accent);
  color: var(--color-accent-fg);
  border: none;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: var(--font-size-base);
  cursor: pointer;
  transition: background 0.15s;
}
.btn-primary:hover { background: var(--color-accent-hover); }
.btn-primary:disabled { opacity: 0.5; cursor: not-allowed; }

/* ---------- FOOTER ---------- */
.app-footer {
  height: 28px;
  background: var(--color-primary);
  color: var(--color-primary-fg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--space-6);
  font-size: var(--font-size-xs);
  opacity: 0.85;
  flex-shrink: 0;
}

/* ---------- TOAST ---------- */
.toast-container {
  position: fixed;
  top: var(--space-6);
  right: var(--space-6);
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.toast {
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-md);
  color: #fff;
  font-size: var(--font-size-sm);
  font-weight: 500;
  box-shadow: var(--shadow-lg);
  animation: toastIn 0.3s ease;
  max-width: 360px;
}
.toast.success { background: var(--color-success); }
.toast.error   { background: var(--color-danger); }
.toast.info    { background: var(--color-info); }
.toast.warning { background: var(--color-warning); }
@keyframes toastIn {
  from { opacity: 0; transform: translateY(-12px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ---------- SPINNER ---------- */
.spinner {
  width: 24px; height: 24px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-accent);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ---------- NEW CHAT MODAL ---------- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
}
.modal {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  width: 90%;
  max-width: 420px;
  box-shadow: var(--shadow-lg);
}
.modal h3 { margin-bottom: var(--space-4); font-size: var(--font-size-xl); }

/* ---------- RESPONSIVE ---------- */
@media (max-width: 768px) {
  .sidebar { width: 100%; position: absolute; z-index: 5; }
  .chat-panel { width: 100%; }
  .main-content { position: relative; }
  .sidebar.hidden { display: none; }
}