* { box-sizing: border-box; margin: 0; padding: 0; -webkit-tap-highlight-color: transparent; }
body { background: var(--bg); color: var(--text); font-family: 'DM Sans', sans-serif; height: 100dvh; overflow: hidden; display: flex; flex-direction: column; touch-action: manipulation; }

/* ── HEADER ── */
/* Desktop default: two flex groups side-by-side inside header */
header { display: flex; flex-direction: row; align-items: center; justify-content: center; flex-wrap: nowrap; padding: 8px 20px; gap: 10px; border-bottom: 1px solid var(--border); flex-shrink: 0; background: var(--bg); z-index: 10; position: relative; }

/* ── SETTINGS PANEL ── */
.settings-panel {
  display: grid;
  grid-template-rows: 0fr;
  overflow: hidden; /* clips .settings-inner padding so the 0fr row collapses to true 0 height */
  opacity: 0;
  pointer-events: none;
  transition: grid-template-rows 0.28s cubic-bezier(0.4,0,0.2,1), opacity 0.2s ease;
  background: var(--surface);
  flex-shrink: 0;
  z-index: 9;
}
.settings-panel.open {
  grid-template-rows: 1fr;
  opacity: 1;
  pointer-events: auto;
  border-bottom: 1px solid var(--border);
}
.settings-inner {
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  flex-wrap: wrap;
}
.settings-sep { width: 1px; height: 22px; background: var(--border-strong); flex-shrink: 0; }
/* Always show text labels inside the settings panel, even on touch */
.settings-inner .btn-label { display: inline !important; }
/* Gear icon — active/open state */
#settingsBtn.active { color: var(--accent); border-color: var(--accent); background: var(--accent-bg); }
.hdr-top { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.hdr-bot { display: flex; align-items: center; gap: 8px; }
/* hdr-icons pushed to right of hdr-bot via margin-left: auto */
.hdr-icons { display: flex; align-items: center; gap: 6px; margin-left: auto; }
/* Note: tablet-landscape and tablet-portrait breakpoints still use display:contents
   on hdr-top/hdr-bot to achieve their flat single-row / 3-row layouts without
   restructuring the HTML. Those cases are documented in responsive.css. */
.version-tag { font-size: 0.62rem; color: var(--version-color); letter-spacing: 0.06em; user-select: none; margin-left: auto; align-self: center; white-space: nowrap; }
.brand:hover { background: var(--surface2); }
.brand:active { background: var(--border); }
.brand-logo { width: 36px; height: 36px; flex-shrink: 0; color: var(--accent); }
.brand-name { font-family: 'Playfair Display', serif; font-size: 1.35rem; letter-spacing: 0.04em; color: var(--accent); white-space: nowrap; overflow: hidden; }
/* Short name variants — shown via font-size:0 trick on siblings */
.brand-full { }
.brand-short { display: none; }
.select-group { display: flex; align-items: center; gap: 8px; }
.select-group label { font-size: 0.75rem; color: var(--muted); text-transform: uppercase; letter-spacing: 0.08em; white-space: nowrap; }
.star-btn { background: none; border: none; cursor: pointer; font-size: 1.2rem; line-height: 1; color: var(--muted); padding: 4px; transition: color 0.15s, transform 0.15s; flex-shrink: 0; }
.star-btn:hover:not(:disabled) { color: var(--accent); transform: scale(1.2); }
.star-btn:active:not(:disabled) { transform: scale(0.9); }
.star-btn.starred { color: var(--accent); }
.star-btn:disabled { opacity: 0.2; cursor: not-allowed; }
select { background: var(--surface2); color: var(--text); border: 1px solid var(--accent2-border); border-radius: 10px; padding: 0 36px 0 14px; height: var(--touch-min); font-family: 'DM Sans', sans-serif; font-size: 0.92rem; appearance: none; -webkit-appearance: none; cursor: pointer; outline: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%237a7590' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 12px center; transition: border-color 0.2s; }
select:focus { border-color: var(--accent); }
select:disabled { opacity: 0.4; cursor: not-allowed; }
#songSelect { min-width: 200px; }
#partSelect { min-width: 170px; }
.toggle-wrap { display: flex; align-items: center; gap: 8px; flex-shrink: 0; }
.toggle-wrap span { font-size: 0.75rem; color: var(--muted); text-transform: uppercase; letter-spacing: 0.08em; white-space: nowrap; }
.autoplay-label { display: flex; flex-direction: column; align-items: center; line-height: 1.1; gap: 0; }
.al-line { font-size: 0.65rem; color: var(--muted); text-transform: uppercase; letter-spacing: 0.08em; white-space: nowrap; display: block; }
.al-icon { display: none; color: var(--muted); flex-shrink: 0; }
.toggle { position: relative; width: 42px; height: 24px; flex-shrink: 0; }
.toggle input { opacity: 0; width: 0; height: 0; }
.toggle-slider { position: absolute; inset: 0; background: var(--surface2); border: 1px solid var(--accent2-border); border-radius: 24px; cursor: pointer; transition: background 0.2s, border-color 0.2s; }
.toggle-slider::before { content: ''; position: absolute; width: 16px; height: 16px; left: 3px; top: 3px; background: var(--muted); border-radius: 50%; transition: transform 0.2s, background 0.2s; }
.toggle input:checked + .toggle-slider { background: rgba(200,169,110,0.2); border-color: var(--accent); }
.toggle input:checked + .toggle-slider::before { transform: translateX(18px); background: var(--accent); }
.header-btn { background: none; border: 1px solid var(--accent2-border); color: var(--accent2-text); border-radius: 10px; height: var(--touch-min); padding: 0 16px; font-family: 'DM Sans', sans-serif; font-size: 0.85rem; cursor: pointer; display: flex; align-items: center; gap: 7px; transition: color 0.15s, border-color 0.15s; white-space: nowrap; flex-shrink: 0; }
.header-btn.icon-btn { padding: 0; width: var(--touch-min); justify-content: center; flex-direction: column; gap: 2px; }
.header-btn.icon-btn .btn-label { font-size: 0.5rem; letter-spacing: 0.04em; text-transform: uppercase; line-height: 1; }
.header-btn:hover { color: var(--accent); border-color: var(--accent); }
.header-btn:active { background: var(--surface2); }
/* Guest sync nudge — subtle gold tint to draw attention without being aggressive */
.header-btn.guest-nudge { border-color: var(--accent); color: var(--accent); opacity: 0.75; }
.header-btn.guest-nudge:hover { opacity: 1; }
.header-btn svg { transition: transform 0.4s; }
/* Theme toggle icon swap */
[data-theme="light"] .icon-moon { display: none !important; }
[data-theme="light"] .icon-sun  { display: block !important; }
.header-btn.spinning svg { transform: rotate(360deg); }

/* ── MAIN ── */
.main { flex: 1; overflow: hidden; position: relative; }
.pdf-viewer-wrap { width: 100%; height: 100%; background: var(--surface); display: flex; flex-direction: column; }
.pdf-viewer-wrap .pdf-canvas-scroll,
.pdf-viewer-wrap .pdf-brightness-pill { display: none; }
.pdf-viewer-wrap.visible .pdf-canvas-scroll,
.pdf-viewer-wrap.visible .pdf-brightness-pill { display: flex; }
.pdf-viewer-wrap.visible { display: flex; }
.pdf-canvas-scroll { flex: 1; overflow-y: auto; overflow-x: auto; display: flex; flex-direction: column; align-items: center; padding: 0 0 66px; gap: 12px; scroll-behavior: auto; cursor: grab; scrollbar-width: none; -ms-overflow-style: none; }
.pdf-canvas-scroll::-webkit-scrollbar { display: none; }
/* will-change: scroll-position promotes the scroll container to its own GPU layer,
   reducing main-thread work during drag and auto-scroll */
.pdf-canvas-scroll.dragging { cursor: grabbing; scroll-behavior: auto; user-select: none; will-change: scroll-position; }
/* Reduced blur radius (24→12px) is ~4× cheaper to composite on mobile GPUs */
.pdf-canvas-scroll canvas { box-shadow: 0 2px 12px rgba(0,0,0,0.4); display: block; }
.pdf-toolbar { flex-shrink: 0; height: 50px; background: var(--surface); border-top: 1px solid var(--border); display: flex; align-items: center; justify-content: space-between; padding: 0 16px; gap: 12px; position: absolute; bottom: 0; left: 0; right: 0; z-index: 4; }
.pdf-toolbar-group { display: flex; align-items: center; gap: 6px; }
/* ── Shared surface-button base ─────────────────────────────────────────────
   Applies to .phrase-btn, .speed-btn, .speed-step-btn, .pdf-tool-btn.
   Placed HERE (before specific overrides) so cascade naturally lets
   .scroll-main-btn, .scroll-speed-step, .zoom-step-btn etc. win via source order.
   ─────────────────────────────────────────────────────────────────────────── */
.phrase-btn, .speed-btn, .speed-step-btn, .pdf-tool-btn {
  height: var(--btn-h);
  border-radius: var(--btn-radius);
  border: var(--btn-border) solid var(--border-strong);
  background: var(--surface2);
  color: var(--muted);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'DM Sans', sans-serif;
  flex-shrink: 0;
  white-space: nowrap;
  transition: color 0.15s, border-color 0.15s, background 0.15s;
}
/* pdf-tool-btn uses 1px border (not 1.5px like the player-bar buttons) */
.pdf-tool-btn { border-width: 1px; }

/* Scroll speed controls — hidden until scroll lyrics is active */
/* ── Scroll map UI ─────────────────────────────────── */
/* Row layout: icon left, label column right — matches zoom/fullscreen button style.
   On desktop the label column stacks main label + sub-label hint vertically.
   Tablet/mobile: responsive.css reduces height to 32px and hides the sub-label. */
.scroll-main-btn { flex-direction: row; gap: 6px; padding: 0 12px; min-width: 100px; height: 40px; }
.scroll-text-col  { display: flex; flex-direction: column; gap: 1px; }
.scroll-main-label { font-size: 0.82rem; font-weight: 500; line-height: 1.2; pointer-events: none; }
.scroll-sub-label  { font-size: 0.65rem; line-height: 1.2; opacity: 0.8; pointer-events: none; }

/* PDF toolbar buttons are 40px on desktop — slightly taller than player bar (34px) to
   accommodate labels. Responsive breakpoints override this downward for smaller screens. */
.pdf-toolbar .pdf-tool-btn { height: 40px; }
/* State colours */
.scroll-main-btn.state-recording { color: var(--bg) !important; background: var(--loop-color) !important; border-color: var(--loop-color) !important; }
.scroll-main-btn.state-paused    { color: var(--bg) !important; background: #c8953a !important; border-color: #c8953a !important; }
.scroll-main-btn.state-saved     { color: var(--loop-color) !important; border-color: var(--loop-color) !important; background: var(--loop-bg) !important; }
/* Speed slide: hidden by default, slides out right on activation */
.scroll-speed-slide { display: flex; align-items: center; gap: 4px;
  max-width: 0; overflow: hidden; opacity: 0; pointer-events: none;
  transition: max-width 0.22s ease, opacity 0.18s ease; }
.scroll-speed-slide.visible { max-width: 112px; opacity: 1; pointer-events: auto; }
.scroll-speed-step { min-width: 26px; padding: 0 7px !important; font-size: 1rem; font-weight: 700; }
.scroll-speed-val  { font-size: 0.78rem; color: var(--muted); font-variant-numeric: tabular-nums; min-width: 28px; text-align: center; }
/* Cancel / Save buttons: shown in States 1 & 2 only */
.scroll-action-btn { display: none; background: none; border: 1.5px solid var(--border-strong); padding: 0; font-size: 0.9rem; flex-shrink: 0; border-radius: var(--btn-radius); cursor: pointer; align-items: center; justify-content: center; transition: color 0.15s, border-color 0.15s, background 0.15s; width: 30px; height: 30px; }
.scroll-action-btn.visible { display: flex; }
.scroll-cancel-btn { color: var(--muted); }
.scroll-cancel-btn:hover { border-color: var(--danger) !important; color: var(--danger) !important; background: rgba(224,112,112,0.08) !important; }
.scroll-save-btn { color: var(--loop-color); border-color: var(--loop-color); }
.scroll-save-btn:hover { background: var(--loop-bg) !important; }
/* Clear Map button: hidden until State 3; two-tap confirm */
.scroll-map-clear-btn { display: none; background: none; border: 1.5px solid var(--border-strong); color: var(--danger); height: 30px; padding: 0 10px; font-size: 0.75rem; flex-shrink: 0; border-radius: var(--btn-radius); cursor: pointer; align-items: center; justify-content: center; transition: color 0.15s, border-color 0.15s, background 0.15s; white-space: nowrap; }
.scroll-map-clear-btn.visible { display: flex; }
.scroll-map-clear-btn:hover { border-color: var(--danger) !important; color: var(--danger) !important; background: rgba(224,112,112,0.08) !important; }
.scroll-map-clear-btn.confirming { border-color: var(--danger) !important; color: var(--danger) !important; background: rgba(224,112,112,0.12) !important; }
/* Segment overlays: hidden by default, shown during confirm */
.scroll-segs-overlay { position: absolute; inset: 0; pointer-events: none; z-index: 2; opacity: 0; transition: opacity 0.15s; }
.scroll-segs-overlay.segs-visible { opacity: 1; }
.scroll-seg { position: absolute; height: 4px; border-radius: 2px; top: 50%; transform: translateY(-50%); background: rgba(79,196,160,0.55); }
.scroll-seg.open { background: rgba(79,196,160,0.9); }
.scroll-segs-overlay.paused .scroll-seg { background: rgba(200,149,58,0.65); }
.pdf-tool-btn { font-size: 0.85rem; min-width: 36px; padding: 0 12px; gap: 5px; }
.pdf-tool-btn:hover { color: var(--accent); border-color: var(--accent); }
.pdf-tool-btn:active { background: var(--press); }
.pdf-tool-btn:disabled { opacity: 0.3; cursor: not-allowed; }
.pdf-tool-btn.active { color: var(--loop-color); border-color: var(--loop-color); background: var(--loop-bg-md); }
.pdf-zoom-label { font-size: 0.78rem; color: var(--muted); min-width: 42px; text-align: center; font-variant-numeric: tabular-nums; }
.pdf-page-info { font-size: 0.8rem; color: var(--muted); }
/* Tablet progress bar track */
.bar-track { flex: 1; position: relative; height: 28px; display: flex; align-items: center; min-width: 0; }
/* A− / A+ zoom buttons */
/* Zoom widget — morphs between single button and [− pct +] in place */
.zoom-widget { position: relative; display: flex; align-items: center; }
.zoom-toggle-face { gap: 5px; transition: opacity 0.15s; }
.zoom-toggle-face #zoomPct { font-variant-numeric: tabular-nums; opacity: 0.6; font-size: 0.78rem; }
.zoom-expand-face { display: none; align-items: center; gap: 5px; }
.zoom-expand-face.visible { display: flex; }
.zoom-expand-pct { font-size: 0.82rem; color: var(--accent2); font-variant-numeric: tabular-nums; min-width: 38px; text-align: center; }
.zoom-step-btn { min-width: 30px; padding: 0 8px; font-size: 1.1rem; font-weight: 700;
  border-color: var(--accent2-border); color: var(--accent2-text); background: var(--accent2-bg); }
.zoom-step-btn:hover { border-color: var(--accent) !important; color: var(--accent) !important; background: var(--accent-bg) !important; }
.toolbar-ctrl-btn { min-width: 34px; padding: 0 8px; }
.toolbar-play-btn { min-width: 36px; padding: 0 10px; background: var(--accent) !important; color: var(--bg) !important; border-color: var(--accent) !important; }
.toolbar-play-btn:hover { background: var(--accent-hover) !important; }
.tb-media-controls { display: none !important; }
.pdf-viewer-wrap:fullscreen .tb-media-controls { display: flex !important; }
.pdf-viewer-wrap:fullscreen .pdf-toolbar { justify-content: center; gap: 20px; }
/* Slim progress bar replaces old time+scrubber */
.tb-slim-progress { flex: 1; min-width: 80px; max-width: 200px; height: 4px; border-radius: 2px; background: var(--border-strong); position: relative; cursor: pointer; }
.tb-slim-progress input[type=range] { position: absolute; inset: 0; width: 100%; height: 100%; opacity: 0; cursor: pointer; margin: 0; }
.tb-slim-fill { position: absolute; left: 0; top: 0; height: 100%; width: 100%; border-radius: 2px; background: linear-gradient(to right, var(--accent2), var(--accent)); pointer-events: none; transform: scaleX(0); transform-origin: left; will-change: transform; }
/* Fake fullscreen: hide header + settings panel for max PDF space.
   Player bar and iphone-mini-bar stay visible so controls match
   the non-fullscreen experience exactly. */
body.fake-fs-active > header,
body.fake-fs-active > .settings-panel { display: none !important; }
/* PDF toolbar in fake-fs: hide the slim media controls (player bar handles
   transport); zoom + scroll + fullscreen groups remain accessible. */
.pdf-viewer-wrap.fake-fs .pdf-toolbar { justify-content: flex-end; gap: 10px; height: 52px; padding: 0 16px; }
.pdf-viewer-wrap.fake-fs .tb-media-controls { display: none !important; }
.fs-exit-btn { display: none; position: absolute; top: 10px; right: 12px; z-index: 10000; background: rgba(26,24,32,0.92); border: 1px solid var(--border-strong); color: var(--muted); border-radius: var(--btn-radius); height: 36px; padding: 0 12px; font-family: 'DM Sans', sans-serif; font-size: 0.82rem; cursor: pointer; display: none; align-items: center; gap: 6px; backdrop-filter: blur(4px); }
.fs-exit-btn:active { background: var(--surface2); }
.pdf-viewer-wrap.fake-fs .fs-exit-btn { display: flex; }
.pdf-viewer-wrap:fullscreen .fs-exit-btn { display: flex; }

/* ── iPhone landscape mini-bar ── */
.iphone-mini-bar { display: none; }
@media (max-height: 430px) and (orientation: landscape) and (pointer: coarse) {
  /* Always hide the full player bar — mini-bar replaces it */
  .player-bar { display: none !important; }
  .iphone-mini-bar {
    display: flex; align-items: center; gap: 5px;
    position: fixed; bottom: 0; left: 0; right: 0; z-index: 500;
    background: var(--surface); border-top: 1px solid var(--border);
    padding: 6px 10px; height: 52px;
  }
  .imb-play { width: 38px; height: 38px; border-radius: 50%; background: var(--accent); border: none; color: var(--bg); cursor: pointer; display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
  .imb-skip { width: 34px; height: 38px; border-radius: 50%; background: none; border: none; color: var(--muted); cursor: pointer; display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
  /* Proper pill buttons — match PDF toolbar visual weight */
  .imb-aux {
    height: 38px; border-radius: var(--btn-radius); border: 1px solid var(--border-strong);
    background: var(--surface2); color: var(--muted); cursor: pointer;
    display: flex; align-items: center; justify-content: center; flex-shrink: 0;
    padding: 0 10px; font-size: 0.82rem; font-family: 'DM Sans', sans-serif;
    white-space: nowrap; transition: color 0.15s, border-color 0.15s, background 0.15s;
  }
  /* Loop button states — mirrors desktop .phrase-btn exactly */
  .imb-loop-dot { width: 7px; height: 7px; border-radius: 50%; background: currentColor; flex-shrink: 0; display: none; }
  .imb-aux.imb-capturing { color: var(--loop-color); border-color: var(--loop-color); background: rgba(79,196,160,0.12); }
  .imb-aux.imb-capturing .imb-loop-dot { display: block; animation: pbpulse 0.8s ease-in-out infinite; }
  .imb-aux.imb-active { color: var(--bg); background: var(--loop-color); border-color: var(--loop-color); }
  .imb-phrase-stop { display: none; width: 38px; height: 38px; padding: 0; background: none; color: var(--danger); border-color: var(--danger); }
  .imb-phrase-stop.visible { display: flex; }
  .imb-speed-expand { display: none; align-items: center; gap: 4px; flex-shrink: 0; }
  .imb-speed-expand.visible { display: flex; }
  /* Pct button — tap to go slower, shows current speed, styled like a toolbar pill */
  .imb-speed-pct-btn { height: 38px; border-radius: var(--btn-radius); background: var(--surface2); border: 1px solid var(--accent); color: var(--accent); cursor: pointer; display: flex; align-items: center; justify-content: center; font-size: 0.82rem; font-weight: 700; font-family: 'DM Sans', sans-serif; padding: 0 12px; flex-shrink: 0; white-space: nowrap; transition: background 0.15s; }
  .imb-speed-pct-btn:active { background: rgba(var(--accent-rgb,132,99,247),0.15); }
  /* Cancel / reset button */
  .imb-speed-step { width: 38px; height: 38px; border-radius: var(--btn-radius); background: var(--surface2); border: 1px solid var(--border-strong); color: var(--muted); cursor: pointer; display: flex; align-items: center; justify-content: center; font-size: 0.9rem; flex-shrink: 0; font-family: inherit; }
  .imb-time { font-size: 0.7rem; color: var(--muted); font-variant-numeric: tabular-nums; min-width: 28px; white-space: nowrap; flex-shrink: 0; }
  .imb-bar-wrap { flex: 1; max-width: 220px; height: 28px; display: flex; align-items: center; position: relative; }
  /* Loop region highlight inside mini-bar scrubber */
  #imbLoopRegion { position: absolute; height: 4px; border-radius: 2px; background: var(--loop-color); opacity: 0.6; pointer-events: none; top: 50%; transform: translateY(-50%); display: none; z-index: 2; }
  #imbLoopRegion.visible { display: block; }
  /* Scroll map segment ticks inside mini-bar scrubber */
  #imbScrollSegs { position: absolute; inset: 0; pointer-events: none; z-index: 2; opacity: 0; transition: opacity 0.15s; }
  #imbScrollSegs.segs-visible { opacity: 1; }
  /* Shift PDF canvas above the mini-bar */
  .main { padding-bottom: 52px; }
  /* Sub-label (small hint text under scroll button label) — too cramped in phone landscape */
  .scroll-sub-label { display: none !important; }
}
/* Slim progress bar in fullscreen toolbar */
.toolbar-divider { width: 1px; height: 20px; background: var(--border); margin: 0 4px; flex-shrink: 0; }
/* (tb-time and tb-bar-track replaced by tb-slim-progress) */
/* ── EMPTY / STATUS STATE ── */
.empty-state { display: flex; flex-direction: column; align-items: center; justify-content: center; height: 100%; gap: 18px; color: var(--muted); }
.empty-state svg:not(.empty-logo) { opacity: 0.3; }
.empty-logo { width: clamp(60px, 9vw, 80px); height: clamp(60px, 9vw, 80px); color: var(--text); animation: logo-breathe 3s ease-in-out infinite; }
.empty-state #emptyMsg { font-size: 1rem; }
.empty-state .hint { font-size: 0.85rem; opacity: 0.6; }

/* ── FIRST-LOAD ONBOARDING ── */
@keyframes pulse-border {
  0%, 100% { box-shadow: 0 0 0 2px rgba(200,169,110,0.7); border-color: var(--accent); }
  50%       { box-shadow: 0 0 0 6px rgba(200,169,110,0);   border-color: var(--accent-hover); }
}
@keyframes cue-bounce {
  0%, 100% { transform: translateY(0);    opacity: 1; }
  50%       { transform: translateY(-6px); opacity: 0.6; }
}
body:not(.has-track) #songSelect {
  border-color: var(--accent);
  animation: pulse-border 3s ease-in-out infinite;
}
body.has-track #songSelect,
body.has-track #partSelect { border-color: var(--accent); }
.onboard-cue { color: var(--accent); display: flex; justify-content: center; flex-shrink: 0; animation: cue-bounce 1.2s ease-in-out infinite; }

/* ── WELCOME HERO ── */
@keyframes hero-enter {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes logo-breathe {
  0%, 100% { filter: drop-shadow(0 0 6px rgba(200,169,110,0.15)); transform: scale(1); }
  50%       { filter: drop-shadow(0 0 22px rgba(200,169,110,0.55)); transform: scale(1.06); }
}
.welcome-hero { display: flex; flex-direction: column; align-items: center; gap: clamp(6px, 1vh, 12px); flex-shrink: 0; animation: hero-enter 0.7s cubic-bezier(0.22,1,0.36,1) both; }
.hero-logo { width: clamp(60px, 9vw, 86px); height: clamp(60px, 9vw, 86px); color: var(--text); animation: logo-breathe 3s ease-in-out infinite; }
.hero-title { font-family: 'Playfair Display', serif; font-size: clamp(1.5rem, 2.8vw, 2.1rem); color: var(--accent); letter-spacing: 0.04em; line-height: 1; text-align: center; }
.hero-tagline { font-size: clamp(0.7rem, 1.1vw, 0.85rem); color: var(--muted); letter-spacing: 0.1em; text-transform: uppercase; text-align: center; }

/* ── WELCOME SCREEN ── */
.welcome-screen { display: flex; flex-direction: column; align-items: center; justify-content: flex-start; position: absolute; top: 0; left: 0; right: 0; bottom: 50px; padding: clamp(10px, 2vh, 24px) clamp(12px, 2vw, 32px); gap: clamp(8px, 1.5vh, 18px); overflow-y: auto; z-index: 5; background: var(--bg); }
.welcome-title { font-family: 'Playfair Display', serif; font-size: clamp(0.8rem, 1.2vw, 1.05rem); color: var(--muted); letter-spacing: 0.04em; text-align: center; flex-shrink: 0; }
.welcome-title strong { color: var(--accent); font-weight: 400; }
.welcome-version { font-family: 'DM Sans', sans-serif; font-size: 0.7em; color: var(--version-color); letter-spacing: 0.06em; margin-left: 8px; vertical-align: middle; }

.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(6px, 1vw, 14px); width: 100%; max-width: 960px; flex-shrink: 0; }
.feature-card { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: clamp(10px, 1.2vh, 16px) clamp(10px, 1vw, 16px); display: flex; flex-direction: column; gap: clamp(5px, 0.8vh, 9px); transition: border-color 0.2s; }
.feature-card:hover { border-color: rgba(155,111,212,0.35); }
.feature-card-header { display: flex; align-items: center; gap: 8px; }
.feature-icon { width: 28px; height: 28px; border-radius: 7px; background: var(--surface2); border: 1px solid #3a3550; display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.feature-icon.gold svg { color: var(--accent); }
.feature-icon.purple svg { color: var(--accent2); }
.feature-icon.teal svg { color: var(--loop-color); }
.feature-card h3 { font-size: clamp(0.75rem, 0.9vw, 0.875rem); font-weight: 600; color: var(--text); line-height: 1.3; flex: 1; }
.feature-card p { font-size: clamp(0.68rem, 0.75vw, 0.78rem); color: var(--muted); line-height: 1.55; }
.feature-card p strong { color: var(--text); font-weight: 500; }
/* Punchy one-liner always visible */
.card-summary { font-size: clamp(0.68rem, 0.75vw, 0.78rem); color: var(--muted); line-height: 1.4; }
/* Full detail hidden by default, shown on expand */
.card-detail { display: none; font-size: clamp(0.68rem, 0.75vw, 0.78rem); color: var(--muted); line-height: 1.55; border-top: 1px solid var(--border); padding-top: 8px; margin-top: 2px; }
.card-detail strong { color: var(--text); font-weight: 500; }
.feature-card.expanded .card-detail { display: block; }
.feature-card.expanded .card-expand-btn { transform: rotate(45deg); color: var(--accent2); }
/* Expand button */
.card-expand-btn { margin-left: auto; flex-shrink: 0; width: 20px; height: 20px; border-radius: 50%; border: 1px solid var(--border); background: none; color: var(--muted); font-size: 1rem; line-height: 1; display: flex; align-items: center; justify-content: center; cursor: pointer; transition: transform 0.2s, color 0.2s, border-color 0.2s; padding: 0; }
.card-expand-btn:hover { border-color: var(--accent2); color: var(--accent2); }

.welcome-footer { display: flex; align-items: center; gap: 8px; flex-shrink: 0; padding-bottom: clamp(4px, 1vh, 10px); }
.welcome-footer label { display: flex; align-items: center; gap: 8px; font-size: 0.78rem; color: var(--muted); cursor: pointer; user-select: none; transition: color 0.15s; }
.welcome-footer label:hover { color: var(--text); }
.welcome-check { width: 16px; height: 16px; accent-color: var(--accent2); cursor: pointer; flex-shrink: 0; }

@media (max-width: 820px) {
  .feature-grid { grid-template-columns: repeat(3, 1fr); max-width: 960px; }
}
@media (max-width: 480px) {
  .feature-grid { grid-template-columns: 1fr; max-width: 340px; }
  .trio-wrap { grid-template-columns: 1fr; }
}
.pdf-viewer-wrap:fullscreen {
  background: var(--fs-bg);
  /* Ensure the fullscreen container fills the true viewport on all platforms,
     including iOS Safari where :fullscreen sometimes doesn't cover the full height */
  width: 100vw;
  height: 100vh;
  height: 100dvh; /* dynamic viewport height — accounts for browser chrome on mobile */
}
.pdf-viewer-wrap:fullscreen .pdf-canvas-scroll { padding: 24px 0 70px; }