/* ============ Aura AI — Stylesheet ============ */

* { box-sizing: border-box; }

:root {
  --bg: #131620;
  --bg-glow-1: #7c5cff;
  --bg-glow-2: #4f9dff;
  --panel: #181b26;
  --panel-2: #202433;
  --border: #2c3046;
  --text: #f1f3f9;
  --text-secondary: #9aa0b4;
  --accent-1: #7c5cff;
  --accent-2: #4f9dff;
  --bubble-user: linear-gradient(135deg, var(--accent-1), var(--accent-2));
  --bubble-user-msg: #35384a;
  --bubble-ai: #1d212e;
  --error: #ef4444;
  --sidebar-width: 280px;
  --radius: 14px;
  --scroll-thumb: #4b4f5e;
  --scroll-thumb-hover: #6b7086;
}

html, body {
  height: 100%;
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Inter", system-ui, -apple-system, sans-serif;
  overflow: hidden;
}

/* Thin, subtle scrollbars (Claude-style: minimal, barely-there until hovered) */
* {
  scrollbar-width: thin;
  scrollbar-color: var(--scroll-thumb) transparent;
}
*::-webkit-scrollbar { width: 5px; height: 5px; }
*::-webkit-scrollbar-track { background: transparent; }
*::-webkit-scrollbar-thumb {
  background: var(--scroll-thumb);
  border-radius: 999px;
  transition: background 0.15s ease;
}
*::-webkit-scrollbar-thumb:hover { background: var(--scroll-thumb-hover); }

.bg-glow {
  position: fixed; inset: 0; z-index: -1;
  background:
    radial-gradient(600px 400px at 15% 10%, color-mix(in srgb, var(--bg-glow-1) 18%, transparent), transparent 60%),
    radial-gradient(600px 400px at 85% 90%, color-mix(in srgb, var(--bg-glow-2) 16%, transparent), transparent 60%);
}

.app-shell {
  display: flex;
  height: 100vh;
  width: 100%;
  overflow: hidden;
  position: relative;
}

/* ---------- Sidebar ---------- */
.sidebar {
  position: relative;
  width: var(--sidebar-width);
  min-width: 200px;
  max-width: 420px;
  flex-shrink: 0;
  background: var(--panel);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  padding: 14px 12px;
  transition: transform 0.25s ease, width 0.2s ease;
  height: 100%;
  overflow: hidden;
}

.app-shell.sidebar-collapsed .sidebar {
  width: 0;
  min-width: 0;
  padding: 14px 0;
  border-right: none;
  overflow: hidden;
}
.app-shell.sidebar-collapsed .sidebar > * { opacity: 0; pointer-events: none; }

.sidebar-open-float {
  display: none;
  position: absolute;
  top: 14px; left: 14px;
  z-index: 20;
  width: 36px; height: 36px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--text);
  cursor: pointer;
}
.app-shell.sidebar-collapsed .sidebar-open-float { display: block; }

.sidebar-resize-handle {
  position: absolute;
  top: 0; right: -3px;
  width: 6px; height: 100%;
  cursor: col-resize;
  z-index: 5;
}
.sidebar-resize-handle:hover,
.sidebar-resize-handle.dragging { background: color-mix(in srgb, var(--accent-1) 30%, transparent); }
.app-shell.sidebar-collapsed .sidebar-resize-handle { display: none; }

.sidebar-top {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 14px; flex-shrink: 0;
}
.brand { display: flex; align-items: center; gap: 8px; }
.brand-logo svg { width: 26px; height: 26px; }
.brand-name { font-weight: 700; font-size: 16px; }

.icon-btn {
  background: transparent; border: none; color: var(--text-secondary);
  width: 32px; height: 32px; border-radius: 8px; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: background 0.15s, color 0.15s;
}
.icon-btn:hover { background: var(--panel-2); color: var(--text); }

.new-chat-btn {
  display: flex; align-items: center; justify-content: center; gap: 6px;
  padding: 10px; border-radius: 10px; border: 1px solid var(--border);
  background: var(--panel-2); color: var(--text); font-weight: 600;
  cursor: pointer; margin-bottom: 12px; flex-shrink: 0;
}
.new-chat-btn:hover { border-color: var(--accent-1); }

.sidebar-search { margin-bottom: 10px; flex-shrink: 0; }
.sidebar-search input {
  width: 100%; padding: 8px 10px; border-radius: 8px;
  border: 1px solid var(--border); background: var(--bg);
  color: var(--text); font-size: 13px; outline: none;
}
.sidebar-search input:focus { border-color: var(--accent-1); }

.sidebar-section-label {
  font-size: 11px; text-transform: uppercase; letter-spacing: 0.05em;
  color: var(--text-secondary); margin: 4px 4px 6px; flex-shrink: 0;
}

.conversation-list {
  flex: 1;
  overflow-y: auto;
  min-height: 0;
  display: flex; flex-direction: column; gap: 2px;
}
.conversation-empty { color: var(--text-secondary); font-size: 13px; padding: 10px 4px; }

.conversation-item {
  display: flex; align-items: center; justify-content: space-between;
  padding: 9px 10px; border-radius: 8px; cursor: pointer;
  font-size: 13.5px; color: var(--text-secondary);
  gap: 6px;
}
.conversation-item:hover { background: var(--panel-2); color: var(--text); }
.conversation-item.active { background: color-mix(in srgb, var(--accent-1) 16%, transparent); color: var(--text); }
.conversation-title {
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap; flex: 1;
}
.conversation-delete {
  background: none; border: none; color: var(--text-secondary);
  opacity: 0; cursor: pointer; font-size: 11px; padding: 2px 4px;
}
.conversation-item:hover .conversation-delete { opacity: 1; }
.conversation-delete:hover { color: var(--error); }

.sidebar-bottom { flex-shrink: 0; padding-top: 10px; border-top: 1px solid var(--border); margin-top: 8px; }
.auth-buttons-sidebar { display: flex; gap: 8px; }
.btn {
  padding: 8px 12px; border-radius: 8px; font-weight: 600; font-size: 13px;
  cursor: pointer; border: 1px solid var(--border); background: transparent; color: var(--text);
}
.btn-block { flex: 1; }
.btn-ghost:hover { background: var(--panel-2); }
.btn-primary { background: var(--bubble-user); color: #fff; border: none; }
.user-button-container { display: flex; align-items: center; }

/* Settings gear hidden per request */
.settings-btn { display: none !important; }

.user-profile-bar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 8px 6px; border-radius: 10px; margin-top: 4px;
}
.user-profile-bar:hover { background: var(--panel-2); }
.user-info { display: flex; align-items: center; gap: 10px; min-width: 0; }
.user-avatar-initials {
  width: 32px; height: 32px; border-radius: 50%; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  background: var(--bubble-user);
  color: #fff; font-size: 12.5px; font-weight: 700; letter-spacing: 0.02em;
}
.user-details { display: flex; flex-direction: column; min-width: 0; line-height: 1.3; }
.user-name {
  font-size: 13.5px; font-weight: 600; color: var(--text);
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.user-badge { font-size: 11px; color: var(--text-secondary); }

/* ---------- Mobile overlay behaviour ---------- */
.sidebar-overlay {
  display: none;
  position: fixed; inset: 0; background: rgba(0,0,0,0.5); z-index: 15;
}
.sidebar-overlay.visible { display: block; }

/* ---------- Main panel ---------- */
.main-panel {
  flex: 1; display: flex; flex-direction: column; min-width: 0; height: 100%;
}

.app-header {
  display: flex; align-items: center; gap: 10px;
  padding: 12px 18px; border-bottom: 1px solid var(--border); flex-shrink: 0;
}
.header-title { flex: 1; font-weight: 600; font-size: 14px; color: var(--text-secondary); }
.sidebar-open { display: none; }

.chat-container {
  flex: 1; display: flex; flex-direction: column; min-height: 0;
  max-width: 860px; width: 100%; margin: 0 auto; padding: 0 18px;
}

.chat-window {
  flex: 1; overflow-y: auto; overflow-x: hidden; scrollbar-gutter: stable;
  padding: 20px 14px 20px 4px;
  display: flex; flex-direction: column; gap: 18px;
}

.message { display: flex; gap: 12px; align-items: flex-start; }
.message-user { flex-direction: row-reverse; }

.avatar {
  width: 30px; height: 30px; border-radius: 50%; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  overflow: hidden;
}
.avatar-ai svg { width: 100%; height: 100%; }
.avatar-user {
  background: var(--bubble-user);
  color: #fff;
  font-size: 11.5px;
  font-weight: 700;
}
.avatar-user svg { width: 16px; height: 16px; }

.bubble {
  max-width: 78%;
  padding: 11px 15px;
  border-radius: var(--radius);
  font-size: 14.5px; line-height: 1.55;
  white-space: pre-wrap; word-wrap: break-word;
}
.message-ai .bubble { background: transparent; border: none; padding: 4px 0; max-width: 100%; }
.message-user .bubble { background: var(--bubble-user-msg); color: #fff; border-top-right-radius: 4px; white-space: normal; }
.error-break { border-color: var(--error) !important; color: var(--error); }

/* Markdown styling inside AI bubbles */
.bubble h1, .bubble h2, .bubble h3 {
  color: var(--text);
  font-weight: 700;
  line-height: 1.3;
  margin: 14px 0 8px;
}
.bubble h1:first-child, .bubble h2:first-child, .bubble h3:first-child { margin-top: 0; }
.bubble h1 { font-size: 20px; padding-bottom: 6px; border-bottom: 1px solid var(--border); }
.bubble h2 { font-size: 17px; }
.bubble h3 { font-size: 15px; color: var(--accent-2); }
.bubble ul, .bubble ol { margin: 6px 0; padding-left: 22px; }
.bubble li { margin: 3px 0; }
.bubble p { margin: 0 0 8px; }
.bubble p:last-child { margin-bottom: 0; }
.bubble code { background: var(--panel-2); padding: 1px 5px; border-radius: 4px; font-size: 13px; }
.bubble pre { background: var(--panel-2); padding: 10px; border-radius: 8px; overflow-x: auto; }
.bubble table { width: 100%; border-collapse: collapse; margin: 10px 0; font-size: 13.5px; }
.bubble th, .bubble td { border: 1px solid var(--border); padding: 6px 10px; text-align: left; }
.bubble th { background: var(--panel-2); color: var(--text); }
.bubble strong { font-weight: 700; }

.quick-prompts { display: flex; gap: 8px; flex-wrap: wrap; padding: 0 4px 10px; flex-shrink: 0; }
.quick-prompts.hidden { display: none; }
.quick-btn {
  padding: 8px 12px; border-radius: 999px; border: 1px solid var(--border);
  background: var(--panel-2); color: var(--text); font-size: 13px; cursor: pointer;
}
.quick-btn:hover { border-color: var(--accent-1); }

.file-chip {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 10px; border-radius: 8px; background: var(--panel-2);
  border: 1px solid var(--border); font-size: 13px; margin: 0 4px 8px; width: fit-content;
}
.file-chip button { background: none; border: none; color: var(--text-secondary); cursor: pointer; }

.chat-input-bar {
  display: flex; align-items: flex-end; gap: 6px;
  border: 1px solid var(--border); border-radius: 18px;
  background: var(--panel); padding: 8px 10px; margin: 0 4px 8px; flex-shrink: 0;
}
.chat-input-bar textarea {
  flex: 1; resize: none; border: none; outline: none; background: transparent;
  color: var(--text); font-family: inherit; font-size: 14.5px; max-height: 140px;
  padding: 6px 4px;
}
.send-btn {
  width: 34px; height: 34px; border-radius: 10px; border: none; cursor: pointer;
  background: var(--bubble-user); color: #fff; display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}

.auth-lock-banner {
  display: none; align-items: center; gap: 6px; justify-content: center;
  padding: 10px; margin: 0 4px 8px; border-radius: 10px;
  background: color-mix(in srgb, var(--accent-1) 12%, transparent);
  border: 1px solid var(--border); font-size: 13px; flex-shrink: 0;
}
.auth-lock-banner.visible { display: flex; }
.link-btn { background: none; border: none; color: var(--accent-2); font-weight: 600; cursor: pointer; padding: 0; }

.disclaimer { text-align: center; font-size: 11.5px; color: var(--text-secondary); margin: 0 0 8px; flex-shrink: 0; }

.app-footer {
  display: flex; align-items: center; justify-content: center; gap: 8px;
  padding: 10px; font-size: 12px; color: var(--text-secondary);
  border-top: 1px solid var(--border); flex-shrink: 0;
}
.footer-dot { opacity: 0.5; }

/* ---------- Mobile ---------- */
@media (max-width: 800px) {
  .sidebar {
    position: fixed; top: 0; left: 0; z-index: 20; height: 100%;
    transform: translateX(-100%);
    width: min(var(--sidebar-width), 82vw);
  }
  .sidebar.open { transform: translateX(0); }
  .app-shell.sidebar-collapsed .sidebar { width: min(var(--sidebar-width), 82vw); }
  .sidebar-open { display: flex; }
  .sidebar-open-float { display: none !important; }
  .sidebar-resize-handle { display: none; }
  .bubble { max-width: 88%; }
}