/* ============================================================
   overlay.css — Presto AI overlay mockup
   Pixel-perfect replica from OverlayManager.swift sharedHead()
   ============================================================ */

/* ---- Overlay panel ---- */
.presto-overlay {
  background: var(--overlay-bg); /* rgba(18,18,20,0.95) — app uses 0.50 with real blur */
  border-radius: 12px;
  box-shadow:
    0 30px 80px rgba(0,0,0,0.55),
    0 0 0 1px rgba(255,255,255,0.08),
    0 0 1px rgba(255,255,255,0.05);
  overflow: hidden;
  position: relative;
}

/* ---- Drag bar ----
   Source: .drag-bar { height: 36px; display: flex; align-items: center; padding: 0 10px; gap: 8px; }
*/
.overlay-drag-bar {
  height: 36px;
  display: flex;
  align-items: center;
  padding: 0 10px;
  gap: 8px;
  cursor: grab;
  user-select: none;
}

/* ---- Logo ----
   Source: .logo { width: 15px; height: 15px; filter: invert(1); opacity: 0.75; flex-shrink: 0; }
*/
.overlay-logo {
  width: 15px;
  height: 15px;
  filter: invert(1);
  opacity: 0.75;
  flex-shrink: 0;
}

/* ---- Drag spacer ----
   Source: .drag-spacer { flex: 1; }
*/
.overlay-drag-spacer {
  flex: 1;
}

/* ---- Minimize button ----
   Source: .minimize-btn { width: 14px; height: 14px; border-radius: 50%; background: #666; ... }
*/
.overlay-minimize-btn {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: #666;
  border: none;
  cursor: pointer;
  position: relative;
  padding: 0;
  flex-shrink: 0;
  transition: background 0.15s;
}
.overlay-minimize-btn::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 3px;
  right: 3px;
  height: 1.5px;
  background: #fff;
  border-radius: 1px;
  transform: translateY(-50%);
}
.overlay-minimize-btn:hover { background: #999; }

/* ---- Close button ----
   Source: .close-btn { width: 14px; height: 14px; border-radius: 50%; background: #666; ... margin-left: 6px; }
*/
.overlay-close-btn {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: #666;
  border: none;
  cursor: pointer;
  position: relative;
  padding: 0;
  flex-shrink: 0;
  transition: background 0.15s;
  margin-left: 6px;
}
.overlay-close-btn::before,
.overlay-close-btn::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 8px;
  height: 1.5px;
  background: #fff;
  border-radius: 1px;
}
.overlay-close-btn::before { transform: translate(-50%, -50%) rotate(45deg); }
.overlay-close-btn::after  { transform: translate(-50%, -50%) rotate(-45deg); }
.overlay-close-btn:hover { background: #e45; }

/* ---- Content area ----
   Source: .content-area { position: absolute; top: 36px; left: 0; right: 0; bottom: 28px;
           overflow-y: auto; overflow-x: hidden; padding: 0 16px 8px 16px; }
*/
.overlay-content-area {
  padding: 0 16px 8px 16px;
  overflow-y: auto;
  overflow-x: hidden;
}

/* ---- Content typography ----
   Source: responseHTML extraStyle — exact values from OverlayManager.swift
   font-family / font-size / line-height come from sharedHead html,body
*/
.overlay-content {
  font-family: var(--font-overlay); /* -apple-system, BlinkMacSystemFont, sans-serif */
  font-size: 13px;
  line-height: 1.6;
  color: var(--overlay-text); /* #f0f0f2 */
  padding-top: 4px; /* .content { padding-top: 4px; } */
  word-wrap: break-word;
}

/* Heading hierarchy — exact from source */
.overlay-content h1 { font-size: 1.5em;  font-weight: 700; margin: 0.8em 0 0.4em; }
.overlay-content h2 { font-size: 1.3em;  font-weight: 600; margin: 0.7em 0 0.3em; }
.overlay-content h3 { font-size: 1.15em; font-weight: 600; margin: 0.6em 0 0.3em; }
.overlay-content h4 { font-size: 1.05em; font-weight: 600; margin: 0.5em 0 0.2em; }
.overlay-content h5,
.overlay-content h6 { font-size: 1em;    font-weight: 600; margin: 0.5em 0 0.2em; }
.overlay-content p  { margin: 0.4em 0; }
.overlay-content ul,
.overlay-content ol { padding-left: 1.4em; margin: 0.4em 0; }
.overlay-content li { margin: 0.15em 0; }

/* Code blocks — exact from source */
.overlay-content pre {
  background: var(--overlay-code-bg); /* rgba(0,0,0,0.3) */
  border-radius: 6px;
  padding: 10px 12px;
  margin: 0.5em 0;
  overflow-x: auto;
  font-size: 12px;
  line-height: 1.45;
}
.overlay-content pre code {
  font-family: 'SF Mono', Menlo, Monaco, 'Courier New', monospace;
  background: none;
  padding: 0;
  font-size: inherit;
  border-radius: 0;
}
.overlay-content code {
  font-family: 'SF Mono', Menlo, Monaco, 'Courier New', monospace;
  background: var(--overlay-code-inline); /* rgba(255,255,255,0.08) */
  padding: 0.15em 0.35em;
  border-radius: 3px;
  font-size: 0.9em;
}

/* Blockquotes */
.overlay-content blockquote {
  border-left: 3px solid rgba(255,255,255,0.2);
  padding-left: 12px;
  margin: 0.5em 0;
  color: rgba(240,240,242,0.7);
}

/* Links */
.overlay-content a { color: var(--overlay-link); text-decoration: none; }

/* Strong / em — exact from source */
.overlay-content strong { font-weight: 600; }
.overlay-content em { font-style: italic; }

/* Horizontal rule */
.overlay-content hr {
  border: none;
  border-top: 1px solid var(--overlay-subtle-border);
  margin: 0.8em 0;
}

/* MathJax overrides — exact from source */
.overlay-content .MathJax { font-size: 1.05em !important; }
.overlay-content mjx-container { margin: 0.4em 0; }

/* Step labels (for solution display) */
.overlay-content .step-label {
  font-weight: 600;
  color: rgba(255,255,255,0.85);
}

/* ---- Bottom bar ----
   Source: .bottom-bar { height: 28px; display: flex; align-items: center;
           justify-content: space-between; padding: 0 10px; }
*/
.overlay-bottom-bar {
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 10px;
}

/* ---- Resize grip ----
   Source: .resize-grip { width: 28px; height: 28px; }
*/
.overlay-resize-grip {
  width: 28px;
  height: 28px;
}

/* ---- ESC hint ----
   Source: .esc-hint { font-size: 10px; color: var(--text-dim); letter-spacing: 0.03em; }
   --text-dim = rgba(255,255,255,0.28)
*/
.overlay-esc-hint {
  font-size: 10px;
  color: rgba(255,255,255,0.28);
  letter-spacing: 0.03em;
  font-family: var(--font-overlay);
}

/* ---- Reply field (shown in feature mockup) ----
   Source: .reply-field { background: var(--subtle-bg); border: 1px solid var(--subtle-border);
           border-radius: 8px; font-size: 13px; padding: 8px 12px; }
*/
.overlay-reply-field {
  width: 100%;
  background: var(--overlay-subtle-bg);
  border: 1px solid var(--overlay-subtle-border);
  border-radius: 8px;
  color: var(--overlay-text);
  font-family: var(--font-overlay);
  font-size: 13px;
  padding: 8px 12px;
  outline: none;
  margin-top: 12px;
}
.overlay-reply-field::placeholder {
  color: rgba(255,255,255,0.4);
}

/* ---- Loading state (from loadingHTML) ----
   Source: .spinner { width:28px; height:28px; border:2.5px solid rgba(255,255,255,0.1);
           border-top-color:rgba(255,255,255,0.5); border-radius:50%; animation:spin 0.8s linear infinite; }
*/
.overlay-loading {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  flex-direction: column;
  gap: 12px;
  padding: 40px 0;
}
.overlay-spinner {
  width: 28px;
  height: 28px;
  border: 2.5px solid rgba(255,255,255,0.1);
  border-top-color: rgba(255,255,255,0.5);
  border-radius: 50%;
  animation: overlay-spin 0.8s linear infinite;
}
@keyframes overlay-spin {
  to { transform: rotate(360deg); }
}
.overlay-loading-text {
  color: rgba(255,255,255,0.4);
  font-size: 12px;
  font-family: var(--font-overlay);
}