/* ═══════════════════════════════════════════════════
   SEBAYHI — style.css
   Palette: strict black / white / grey
   Font: IBM Plex Sans + thmanyah serif (Google Fonts)
         mirrors Thmanyah's clean, modern proportions
═══════════════════════════════════════════════════ */

@font-face {
  font-family: "Thmanyah Serif";
  src: url("/static/fonts/thmanyahserifdisplay-Regular.woff2") format("woff2");
  font-weight: normal;
  font-style: normal;
}

:root {
  --bg:          #0a0a0a;
  --sidebar-bg:  #111111;
  --surface:     #1c1c1c;
  --surface-2:   #2a2a2a;
  --border:      #2e2e2e;
  --text:        #f0f0f0;
  --text-muted:  #707070;
  --text-faint:  #3a3a3a;
  --sidebar-w:   260px;
  --topbar-h:    52px;
  --font:        'IBM Plex Sans', 'Thmanyah Serif', system-ui, sans-serif;
  --radius:      12px;
  --radius-sm:   8px;
}
 
/* ── Light theme ────────────────────────────────────── */
body[data-theme="light"] {
  --bg:         #f5f5f5;
  --sidebar-bg: #ebebeb;
  --surface:    #ffffff;
  --surface-2:  #e0e0e0;
  --border:     #d0d0d0;
  --text:       #111111;
  --text-muted: #666666;
  --text-faint: #bbbbbb;
}
 
body[data-theme="light"] .send-btn:hover {
  background: #111; color: #fff; border-color: #111;
}
 
/* ── Reset ──────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
 
html, body {
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.65;
  overflow: hidden;
}
 
::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 99px; }
 
/* ── Layout ─────────────────────────────────────────── */
body { display: flex; height: 100vh; flex-direction: row; }
 
/* ════════════════════════════════════════════════════
   MOBILE TOP BAR  (hidden on desktop)
════════════════════════════════════════════════════ */
.mobile-topbar {
  display: none;
}
 
/* ════════════════════════════════════════════════════
   SIDEBAR OVERLAY  (mobile backdrop)
════════════════════════════════════════════════════ */
.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 150;
}
 
.sidebar-overlay.active { display: block; }
 
/* ════════════════════════════════════════════════════
   SIDEBAR
════════════════════════════════════════════════════ */
.sidebar {
  width: var(--sidebar-w);
  min-width: var(--sidebar-w);
  height: 100vh;
  background: var(--sidebar-bg);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  z-index: 200;
  transition: transform 0.25s ease;
}
 
.sidebar-brand {
  padding: 22px 18px 16px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: baseline;
  gap: 8px;
  flex-shrink: 0;
}
 
.sidebar-brand-ar {
  font-family: 'Thmanyah Serif', sans-serif;
  font-size: 20px; font-weight: 600; color: var(--text);
}
 
.sidebar-brand-en {
  font-size: 13px; font-weight: 400; color: var(--text-muted);
}
 
.sidebar-section { padding: 14px 14px 10px; }
 
.sidebar-section-label {
  font-size: 10px; font-weight: 500;
  letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--text-muted); margin-bottom: 8px; padding: 0 4px;
}
 
/* Mode toggle */
.mode-toggle { display: flex; flex-direction: column; gap: 4px; }
 
.mode-btn {
  display: flex; align-items: center; gap: 10px;
  padding: 9px 12px; border-radius: var(--radius-sm);
  border: 1px solid transparent; background: transparent;
  color: var(--text-muted); font-family: var(--font);
  font-size: 14px; cursor: pointer; width: 100%;
  text-align: left;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
}
 
.mode-btn svg { width: 16px; height: 16px; flex-shrink: 0; opacity: 0.6; }
.mode-btn:hover { background: var(--surface); color: var(--text); }
.mode-btn--active { background: var(--surface-2); color: var(--text); border-color: var(--border); }
.mode-btn--active svg { opacity: 1; }
 
.mode-btn-text { display: flex; flex-direction: column; line-height: 1.2; }
.mode-en { font-size: 13px; font-weight: 500; }
.mode-ar { font-family: 'Thmanyah Serif', sans-serif; font-size: 12px; color: var(--text-muted); }
 
/* New chat */
.new-chat-btn {
  display: flex; align-items: center; gap: 8px;
  margin: 4px 14px 10px;
  padding: 9px 12px; border-radius: var(--radius-sm);
  border: 1px solid var(--border); background: transparent;
  color: var(--text-muted); font-family: var(--font);
  font-size: 13px; cursor: pointer;
  transition: background 0.15s, color 0.15s;
}
.new-chat-btn svg { width: 14px; height: 14px; }
.new-chat-btn:hover { background: var(--surface); color: var(--text); }
 
/* History */
.sidebar-history-section { flex: 1; overflow-y: auto; border-top: 1px solid var(--border); }
 
.history-list { display: flex; flex-direction: column; gap: 2px; }
 
.history-empty {
  font-size: 12px; color: var(--text-faint);
  padding: 4px; text-align: center; margin-top: 8px;
}
 
.history-item {
  display: flex; align-items: center; gap: 8px;
  padding: 8px 10px; border-radius: var(--radius-sm);
  cursor: pointer; border: 1px solid transparent;
  transition: background 0.12s; overflow: hidden;
}
.history-item:hover { background: var(--surface); }
.history-item--active { background: var(--surface-2); border-color: var(--border); }
 
.history-item-badge {
  font-size: 9px; font-weight: 600; letter-spacing: 0.08em;
  text-transform: uppercase; padding: 2px 6px;
  border-radius: 99px; flex-shrink: 0;
  border: 1px solid var(--border); color: var(--text-muted);
  background: var(--surface);
}
 
.history-item-text {
  font-size: 12px; color: var(--text-muted);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
  flex: 1; font-family: 'Thmanyah Serif', sans-serif;
  direction: rtl; text-align: right;
}
 
/* Sidebar bottom — theme button */
.sidebar-bottom {
  flex-shrink: 0;
  padding: 10px 14px 16px;
  border-top: 1px solid var(--border);
}
 
.theme-btn {
  display: flex; align-items: center; gap: 8px;
  width: 100%; padding: 8px 12px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: transparent; color: var(--text-muted);
  font-family: var(--font); font-size: 13px;
  cursor: pointer; text-align: left;
  transition: background 0.15s, color 0.15s;
}
.theme-btn:hover { background: var(--surface); color: var(--text); }
.theme-btn svg { width: 14px; height: 14px; flex-shrink: 0; }
 
/* ════════════════════════════════════════════════════
   MAIN CHAT
════════════════════════════════════════════════════ */
.chat-main {
  flex: 1; display: flex; flex-direction: column;
  height: 100vh; overflow: hidden; position: relative;
}
 
.chat-scroll {
  flex: 1; overflow-y: auto;
  padding: 40px 48px 24px;
  position: relative;
}
 
/* Watermark */
.chat-watermark {
  position: absolute; top: 50%; left: 50%;
  transform: translate(-50%, -55%);
  font-family: 'Thmanyah Serif', sans-serif;
  font-size: 120px; font-weight: 700;
  color: var(--text); opacity: 0.025;
  pointer-events: none; user-select: none;
  white-space: nowrap; letter-spacing: -2px; z-index: 0;
}
 
/* Message list */
.message-list {
  max-width: 820px; margin: 0 auto;
  display: flex; flex-direction: column; gap: 28px;
  position: relative; z-index: 1; padding-bottom: 20px;
}
 
/* ── Message ─────────────────────────────────────── */
.message {
  display: flex; gap: 14px; align-items: flex-start;
  animation: msgIn 0.2s ease both;
}
.message--user { flex-direction: row-reverse; }
 
@keyframes msgIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}
 
/* Avatar */
.msg-avatar {
  width: 34px; height: 34px; border-radius: 50%;
  background: var(--surface-2); border: 1px solid var(--border);
  color: var(--text-muted);
  font-family: 'Thmanyah Serif', sans-serif;
  font-size: 14px; font-weight: 500;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.message--user .msg-avatar { border-color: #444; color: var(--text); }
 
/* Body */
.msg-body { display: flex; /*flex-direction: column; */ gap: 5px; max-width: 100%; }
.message--user .msg-body { align-items: flex-end; }
 
/* Intent badge */
.intent-badge {
  font-size: 10px; font-weight: 500;
  letter-spacing: 0.07em; text-transform: uppercase;
  color: var(--text-muted);
  display: flex; align-items: center; gap: 5px;
}
.badge-dot {
  width: 5px; height: 5px; border-radius: 50%;
  background: var(--text-faint); display: inline-block;
}
 
/* ── User bubble — has background/border ─────────── */
/*
.msg-bubble {
  padding: 11px 15px;
  border-radius: var(--radius);
  line-height: 1.7; word-break: break-word;
  font-family: 'Thmanyah Serif', 'IBM Plex Sans', sans-serif;
  font-size: 15px;
  background: var(--surface-2);
  color: var(--text);
  border: 1px solid var(--border);
  border-top-right-radius: 3px;
  direction: rtl; text-align: right;
}
*/
/* ── Assistant text — no bubble, just text ───────── */
.msg-text {
  line-height: 1.8; word-break: break-word;
  font-family: 'Thmanyah Serif', 'IBM Plex Sans', sans-serif;
  font-size: 15px; color: var(--text);
  padding: 2px 0;
}
 
.msg-text br { display: block; margin-bottom: 6px; }
 
/* Error state */
.msg-text--error { color: #e87070; }
 
/* Streaming cursor */
.streaming-cursor {
  display: inline-block; width: 2px; height: 1em;
  background: var(--text-muted); margin-left: 2px;
  vertical-align: text-bottom;
  animation: blink 0.8s step-end infinite;
}
@keyframes blink { 50% { opacity: 0; } }
 
/* Thinking dots */
.thinking {
  display: flex; align-items: center; gap: 5px;
  padding: 6px 2px; width: fit-content;
}
.thinking-dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--text-muted);
  animation: bounce 1.2s ease-in-out infinite;
}
.thinking-dot:nth-child(2) { animation-delay: 0.2s; }
.thinking-dot:nth-child(3) { animation-delay: 0.4s; }
@keyframes bounce {
  0%, 80%, 100% { transform: translateY(0); opacity: 0.4; }
  40%           { transform: translateY(-5px); opacity: 1; }
}
 
/* Mode divider */
.mode-divider { display: flex; align-items: center; gap: 12px; animation: msgIn 0.2s ease both; }
.mode-divider-line { flex: 1; height: 1px; background: var(--border); }
.mode-divider-label {
  font-size: 11px; font-weight: 500; letter-spacing: 0.07em;
  text-transform: uppercase; color: var(--text-muted);
  white-space: nowrap; padding: 3px 10px;
  border-radius: 99px; border: 1px solid var(--border);
}
 
/* ════════════════════════════════════════════════════
   INPUT BAR
════════════════════════════════════════════════════ */
.input-bar {
  flex-shrink: 0;
  border-top: 1px solid var(--border);
  padding: 14px 48px 18px;
  background: var(--bg);
}
 
.input-inner {
  max-width: 820px; margin: 0 auto;
  display: flex; align-items: flex-end; gap: 10px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 8px 10px;
  transition: border-color 0.2s;
}
.input-inner:focus-within { border-color: #555; }
 
.input-field {
  flex: 1; background: transparent;
  border: none; outline: none;
  color: var(--text);
  font-family: 'Thmanyah Serif', 'IBM Plex Sans', sans-serif;
  font-size: 15px; line-height: 1.5;
  resize: none; max-height: 160px;
  overflow-y: auto; direction: auto;
  padding: 0;          /* removes extra internal padding */
  margin: 0;
  display: block;
}
 
.input-field::placeholder {
  color: var(--text-muted);
  font-family: 'IBM Plex Sans', sans-serif;
  font-size: 14px;
}
 
.send-btn {
  width: 34px; height: 34px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--surface-2); color: var(--text-muted);
  cursor: pointer; display: flex;
  align-items: center; justify-content: center;
  flex-shrink: 0;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
}
.send-btn:hover { background: #fff; color: #000; border-color: #fff; }
.send-btn:active { opacity: 0.8; }
.send-btn:disabled { background: transparent; color: var(--text-faint); border-color: var(--border); cursor: not-allowed; }
.send-btn svg { width: 15px; height: 15px; }
 
/* ════════════════════════════════════════════════════
   MOBILE  (≤ 680px)
════════════════════════════════════════════════════ */
@media (max-width: 680px) {
 
  /* Show mobile topbar */
  .mobile-topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: fixed;
    top: 0; left: 0; right: 0;
    height: var(--topbar-h);
    background: var(--sidebar-bg);
    border-bottom: 1px solid var(--border);
    padding: 0 14px;
    z-index: 100;
  }
 
  .mobile-brand {
    font-family: 'Thmanyah Serif', sans-serif;
    font-size: 15px; font-weight: 600; color: var(--text);
  }
 
  .mobile-menu-btn,
  .mobile-theme-btn {
    width: 36px; height: 36px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    background: transparent; color: var(--text-muted);
    display: flex; align-items: center; justify-content: center;
    cursor: pointer;
  }
  .mobile-menu-btn svg { width: 18px; height: 18px; }
  .mobile-theme-btn svg { width: 16px; height: 16px; }
 
  /* Sidebar slides in from left */
  .sidebar {
    position: fixed;
    top: 0; left: 0;
    height: 100vh;
    transform: translateX(-100%);
    transition: transform 0.25s ease;
    z-index: 200;
  }
 
  .sidebar.open { transform: translateX(0); }
 
  /* Push chat below topbar */
  .chat-main {
    height: 100vh;
    padding-top: var(--topbar-h);
  }
 
  .chat-scroll { padding: 20px 16px 16px; }
  .input-bar   { padding: 10px 14px 14px; }
  .chat-watermark { font-size: 56px; }
  .msg-body { max-width: 100%; }
}