/* ═══════════════════════════════════════════════
   WebRelay — Secure Messenger
   Design: Dark, minimal, WhatsApp/Telegram-like
═══════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Sans+Arabic:wght@300;400;500;600&family=JetBrains+Mono:wght@400;600&display=swap');

/* ── Reset & Base ────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg-primary:   #0d1117;
  --bg-secondary: #161b22;
  --bg-tertiary:  #1c2128;
  --bg-hover:     #21262d;
  --bg-active:    #1f2937;

  --accent:       #25d366;
  --accent-dim:   #1a9e4a;
  --accent-glow:  rgba(37,211,102,0.15);
  --accent-bubble:#128c47;

  --bubble-out:   #005c4b;
  --bubble-in:    #1e2a35;

  --text-primary:   #e6edf3;
  --text-secondary: #7d8590;
  --text-muted:     #484f58;
  --text-link:      #58a6ff;

  --border:       rgba(255,255,255,0.07);
  --border-focus: rgba(37,211,102,0.5);

  --shadow:       0 4px 24px rgba(0,0,0,0.4);
  --shadow-sm:    0 2px 8px rgba(0,0,0,0.3);

  --radius:       12px;
  --radius-sm:    8px;
  --radius-xs:    6px;
  --radius-msg:   18px;

  --sidebar-w:    300px;
  --header-h:     60px;
  --input-h:      64px;

  --font-body:    'IBM Plex Sans Arabic', sans-serif;
  --font-mono:    'JetBrains Mono', monospace;

  --transition:   0.18s ease;
}

html, body {
  height: 100%;
  overflow: hidden;
  background: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.5;
  direction: rtl;
  -webkit-font-smoothing: antialiased;
}

/* ── Scrollbar ───────────────────────────────── */
::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--text-muted); border-radius: 2px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-secondary); }

/* ── Onboarding Screen ───────────────────────── */
#onboarding {
  position: fixed; inset: 0;
  background: var(--bg-primary);
  display: flex; align-items: center; justify-content: center;
  padding: 20px;
  z-index: 100;
  animation: fadeIn 0.4s ease;
}

#onboarding.hidden { display: none; }

.onboard-card {
  width: 100%; max-width: 420px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 40px 32px;
  text-align: center;
}

.onboard-logo {
  width: 72px; height: 72px;
  background: var(--accent-glow);
  border: 2px solid var(--accent);
  border-radius: 24px;
  display: flex; align-items: center; justify-content: center;
  font-size: 32px;
  margin: 0 auto 24px;
}

.onboard-card h1 {
  font-size: 26px;
  font-weight: 600;
  letter-spacing: -0.5px;
  margin-bottom: 8px;
}

.onboard-card .subtitle {
  color: var(--text-secondary);
  font-size: 14px;
  margin-bottom: 32px;
}

/* Tabs */
.onboard-tabs {
  display: flex;
  background: var(--bg-tertiary);
  border-radius: var(--radius);
  padding: 4px;
  margin-bottom: 28px;
  gap: 4px;
}

.tab-btn {
  flex: 1;
  padding: 10px;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 500;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition);
}

.tab-btn.active {
  background: var(--bg-hover);
  color: var(--text-primary);
}

/* Forms */
.onboard-form { display: none; flex-direction: column; gap: 16px; }
.onboard-form.visible { display: flex; }

.form-group { display: flex; flex-direction: column; gap: 6px; text-align: right; }
.form-group label { font-size: 13px; color: var(--text-secondary); }

.form-input {
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 13px;
  padding: 12px 14px;
  transition: var(--transition);
  width: 100%;
  direction: ltr;
  text-align: left;
}

.form-input:focus {
  outline: none;
  border-color: var(--border-focus);
  background: var(--bg-hover);
}

.form-input::placeholder { color: var(--text-muted); }

.seed-display {
  background: var(--bg-tertiary);
  border: 1px solid var(--accent-dim);
  border-radius: var(--radius-sm);
  padding: 16px;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.8;
  word-break: break-all;
  color: var(--accent);
  text-align: left;
  direction: ltr;
  position: relative;
}

.seed-warning {
  display: flex; align-items: flex-start; gap: 10px;
  background: rgba(255,165,0,0.08);
  border: 1px solid rgba(255,165,0,0.2);
  border-radius: var(--radius-sm);
  padding: 12px;
  font-size: 13px;
  color: #f0a500;
  text-align: right;
}

.btn-primary {
  background: var(--accent);
  color: #000;
  border: none;
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 600;
  padding: 14px;
  cursor: pointer;
  transition: var(--transition);
  width: 100%;
}

.btn-primary:hover { background: #2ee870; }
.btn-primary:active { transform: scale(0.98); }
.btn-primary:disabled { opacity: 0.5; cursor: not-allowed; }

.btn-secondary {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: 14px;
  padding: 11px;
  cursor: pointer;
  transition: var(--transition);
  width: 100%;
}

.btn-secondary:hover { background: var(--bg-hover); color: var(--text-primary); }

.btn-icon {
  background: var(--bg-hover);
  border: 1px solid var(--border);
  border-radius: var(--radius-xs);
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 16px;
  padding: 8px 10px;
  transition: var(--transition);
  white-space: nowrap;
}

.btn-icon:hover { background: var(--bg-active); color: var(--text-primary); }

/* ── App Layout ──────────────────────────────── */
#app {
  display: none;
  height: 100vh;
  overflow: hidden;
}

#app.visible {
  display: flex;
}

/* ── Sidebar ─────────────────────────────────── */
#sidebar {
  width: var(--sidebar-w);
  flex-shrink: 0;
  background: var(--bg-secondary);
  border-left: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  height: 100vh;
  transition: transform 0.25s ease;
  z-index: 20;
}

.sidebar-header {
  height: var(--header-h);
  padding: 0 16px;
  display: flex; align-items: center; justify-content: space-between;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.my-info {
  display: flex; flex-direction: column;
}

.my-info .label {
  font-size: 11px;
  color: var(--text-muted);
}

.my-address {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--accent);
}

.sidebar-actions {
  display: flex; gap: 8px;
}

.search-bar {
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.search-input-wrap {
  position: relative;
  display: flex; align-items: center;
}

.search-icon {
  position: absolute;
  right: 10px;
  color: var(--text-muted);
  font-size: 14px;
  pointer-events: none;
}

#searchInput {
  width: 100%;
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: 20px;
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 14px;
  padding: 9px 34px 9px 12px;
  transition: var(--transition);
  direction: rtl;
}

#searchInput:focus { outline: none; border-color: var(--border-focus); }
#searchInput::placeholder { color: var(--text-muted); }

#convList {
  flex: 1;
  overflow-y: auto;
}

.conv-empty {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  height: 200px; gap: 10px; color: var(--text-muted); font-size: 13px;
}

.conv-item {
  display: flex; align-items: center; gap: 12px;
  padding: 12px 16px;
  cursor: pointer;
  transition: background var(--transition);
  border-bottom: 1px solid var(--border);
  position: relative;
}

.conv-item:hover { background: var(--bg-hover); }
.conv-item.active { background: var(--bg-active); }

.conv-avatar {
  width: 44px; height: 44px;
  background: var(--bg-tertiary);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 600;
  color: var(--accent);
  flex-shrink: 0;
  border: 2px solid var(--border);
}

.conv-info { flex: 1; min-width: 0; }

.conv-name {
  font-size: 13px;
  font-family: var(--font-mono);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
  margin-bottom: 3px;
}

.conv-preview {
  font-size: 12px;
  color: var(--text-secondary);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}

.conv-meta {
  display: flex; flex-direction: column; align-items: flex-end; gap: 4px;
  flex-shrink: 0;
}

.conv-time { font-size: 11px; color: var(--text-muted); }

.unread-badge {
  background: var(--accent);
  color: #000;
  font-size: 11px;
  font-weight: 600;
  border-radius: 10px;
  padding: 1px 6px;
  min-width: 18px;
  text-align: center;
}

/* ── Main Chat Area ───────────────────────────── */
#main {
  flex: 1;
  display: flex;
  flex-direction: column;
  height: 100vh;
  max-height: 100vh;
  overflow: hidden;
  background: var(--bg-primary);
  position: relative;
}

/* Chat pattern background */
#main::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 25% 25%, rgba(37,211,102,0.02) 0%, transparent 50%),
    radial-gradient(circle at 75% 75%, rgba(37,211,102,0.02) 0%, transparent 50%);
  pointer-events: none;
  z-index: 0;
}

.chat-header {
  height: var(--header-h);
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center; gap: 12px;
  padding: 0 16px;
  flex-shrink: 0;
  position: relative; z-index: 1;
}

.chat-back {
  display: none;
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-size: 20px;
  cursor: pointer;
  padding: 4px 8px;
  border-radius: var(--radius-xs);
}

.chat-back:hover { background: var(--bg-hover); }

.chat-avatar {
  width: 38px; height: 38px;
  background: var(--bg-tertiary);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  color: var(--accent);
  border: 2px solid var(--border);
  flex-shrink: 0;
}

.chat-title-wrap { flex: 1; min-width: 0; }

#chatTitle {
  font-size: 15px;
  font-weight: 600;
  font-family: var(--font-mono);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}

#chatStatus {
  font-size: 12px;
  color: var(--text-secondary);
}

.chat-header-actions { display: flex; gap: 6px; }

/* ── Messages ─────────────────────────────────── */
#messages {
  flex: 1;
  overflow-y: auto;
  padding: 16px;
  padding-bottom: 80px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  position: relative;
  z-index: 1;
  min-height: 0;
}

.chat-empty {
  flex: 1;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 12px; color: var(--text-muted); text-align: center;
}

.chat-empty .empty-icon { font-size: 48px; opacity: 0.5; }
.chat-empty p { font-size: 14px; }

.chat-welcome {
  display: flex; flex-direction: column; align-items: center;
  gap: 12px; padding: 20px; margin-bottom: 16px;
}

.secure-badge {
  display: inline-flex; align-items: center; gap: 6px;
  background: rgba(37,211,102,0.1);
  border: 1px solid rgba(37,211,102,0.2);
  border-radius: 20px;
  padding: 6px 14px;
  font-size: 12px;
  color: var(--accent);
}

.message {
  display: flex;
  margin: 2px 0;
  animation: msgIn 0.2s ease;
}

@keyframes msgIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.message.outgoing { justify-content: flex-start; }
.message.incoming { justify-content: flex-end; }

.message-bubble {
  max-width: 70%;
  padding: 8px 12px;
  border-radius: var(--radius-msg);
  font-size: 14.5px;
  line-height: 1.5;
  word-break: break-word;
  position: relative;
}

.message.outgoing .message-bubble {
  background: var(--bubble-out);
  border-bottom-right-radius: 4px;
  color: var(--text-primary);
}

.message.incoming .message-bubble {
  background: var(--bubble-in);
  border-bottom-left-radius: 4px;
  color: var(--text-primary);
}

.message-time {
  font-size: 11px;
  color: rgba(255,255,255,0.4);
  margin-top: 4px;
  display: flex; align-items: center; gap: 4px;
  justify-content: flex-end;
}

.msg-check { font-size: 12px; color: var(--accent); }

/* Date separator */
.date-separator {
  display: flex; align-items: center; gap: 10px;
  margin: 12px 0; color: var(--text-muted); font-size: 12px;
}

.date-separator::before, .date-separator::after {
  content: ''; flex: 1; height: 1px; background: var(--border);
}

/* ── Input Area ───────────────────────────────── */
#inputArea {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  padding: 10px 12px;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 9999;
}


#messageInput {
  flex: 1;
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: 22px;
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 14.5px;
  padding: 10px 16px;
  resize: none;
  max-height: 120px;
  transition: border-color var(--transition);
  direction: auto;
  line-height: 1.5;
}

#messageInput:focus {
  outline: none;
  border-color: var(--border-focus);
}

#messageInput::placeholder { color: var(--text-muted); }

.send-btn {
  width: 42px; height: 42px;
  background: var(--accent);
  border: none;
  border-radius: 50%;
  color: #000;
  font-size: 18px;
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  transition: var(--transition);
}

.send-btn:hover { background: #2ee870; transform: scale(1.05); }
.send-btn:active { transform: scale(0.95); }

/* ── No Chat Selected ────────────────────────── */
#noChat {
  flex: 1;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 16px; color: var(--text-muted); text-align: center; padding: 40px;
}

.noChat-logo {
  width: 80px; height: 80px;
  background: var(--bg-secondary);
  border-radius: 28px;
  display: flex; align-items: center; justify-content: center;
  font-size: 36px;
  border: 2px solid var(--border);
}

#noChat h2 { font-size: 22px; font-weight: 600; color: var(--text-primary); }
#noChat p { font-size: 14px; max-width: 300px; line-height: 1.6; }

/* ── Modal ───────────────────────────────────── */
.modal-overlay {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.7);
  backdrop-filter: blur(4px);
  display: flex; align-items: center; justify-content: center;
  z-index: 200;
  padding: 20px;
  opacity: 0; pointer-events: none;
  transition: opacity 0.2s ease;
}

.modal-overlay.show { opacity: 1; pointer-events: all; }

.modal-box {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 28px 24px;
  width: 100%; max-width: 400px;
  transform: translateY(10px);
  transition: transform 0.2s ease;
}

.modal-overlay.show .modal-box { transform: translateY(0); }

.modal-box h3 {
  font-size: 18px; font-weight: 600; margin-bottom: 20px;
}

.modal-footer {
  display: flex; gap: 10px; margin-top: 20px;
}

/* ── Settings Panel ──────────────────────────── */
#settingsPanel {
  position: fixed; inset: 0;
  background: var(--bg-primary);
  z-index: 150;
  display: flex; flex-direction: column;
  transform: translateX(-100%);
  transition: transform 0.3s ease;
  overflow-y: auto;
}

#settingsPanel.open { transform: translateX(0); }

.settings-header {
  height: var(--header-h);
  display: flex; align-items: center; gap: 12px;
  padding: 0 16px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-secondary);
  flex-shrink: 0;
}

.settings-header h2 { font-size: 17px; font-weight: 600; }

.settings-section {
  padding: 20px 16px 8px;
}

.settings-section-title {
  font-size: 12px;
  color: var(--accent);
  font-weight: 600;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.settings-row {
  display: flex; align-items: center; justify-content: space-between;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  margin-bottom: 8px;
  cursor: pointer;
  transition: background var(--transition);
}

.settings-row:hover { background: var(--bg-hover); }

.settings-row-label { font-size: 14px; font-weight: 500; }
.settings-row-sub { font-size: 12px; color: var(--text-muted); margin-top: 2px; }
.settings-row-value { font-size: 13px; color: var(--text-secondary); }

.settings-row.danger .settings-row-label { color: #f85149; }

/* Toggle Switch */
.toggle {
  width: 44px; height: 24px;
  background: var(--bg-hover);
  border-radius: 12px;
  position: relative;
  cursor: pointer;
  transition: background var(--transition);
  border: 1px solid var(--border);
}

.toggle.on { background: var(--accent-dim); border-color: var(--accent); }

.toggle::after {
  content: '';
  position: absolute;
  width: 18px; height: 18px;
  background: #fff;
  border-radius: 50%;
  top: 2px; right: 2px;
  transition: transform var(--transition);
}

.toggle.on::after { transform: translateX(-20px); }

/* ── Toast ───────────────────────────────────── */
#toast {
  position: fixed;
  bottom: 90px;
  left: 50%; transform: translateX(-50%) translateY(20px);
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 10px 20px;
  font-size: 13px;
  color: var(--text-primary);
  opacity: 0;
  transition: opacity 0.2s, transform 0.2s;
  z-index: 999;
  white-space: nowrap;
  pointer-events: none;
  max-width: calc(100vw - 40px);
  text-overflow: ellipsis;
  overflow: hidden;
}

#toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

#toast.success { border-color: var(--accent); color: var(--accent); }
#toast.error { border-color: #f85149; color: #f85149; }

/* ── Loading Spinner ─────────────────────────── */
.spinner {
  width: 18px; height: 18px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  display: inline-block;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* ── Utility ─────────────────────────────────── */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.text-mono { font-family: var(--font-mono); }
.text-muted { color: var(--text-secondary); }
.text-accent { color: var(--accent); }
.flex-center { display: flex; align-items: center; justify-content: center; }
.gap-8 { gap: 8px; }
.mt-8 { margin-top: 8px; }

/* ── Responsive (Mobile) ─────────────────────── */
@media (max-width: 640px) {
  :root { --sidebar-w: 100vw; }

  #sidebar {
    position: fixed;
    inset: 0;
    width: 100vw;
    transform: translateX(0);
    z-index: 30;
  }

  #sidebar.hidden-mobile {
    transform: translateX(100%);
  }

  #main {
    position: fixed;
    inset: 0;
    z-index: 25;
  }

  .chat-back { display: flex; }

  #noChat { display: none; }

  #toast { bottom: 80px; }
}