/* 팬심 한 자루 — app UI.
   Soft UI on paper: brand colours from the pencil (yellow), graphite (ink) and drawing paper (cream).
   Mobile first; 48px touch targets; visible focus; respects reduced motion. Icons: Lucide shapes (ISC licence) as CSS masks,
   so buttons whose text changes at runtime keep their icon. */
:root {
  color-scheme: light;
  --paper:#f6f0e3; --paper-deep:#ece2cd; --card:#fffdf8; --field:#ffffff;
  --ink:#2d2a27; --ink-muted:#6b6259; --placeholder:#857a6f;
  --line:#e3d7c1; --line-strong:#b9a98c;
  --pencil:#f5b700; --pencil-hover:#ffc42e; --pencil-edge:#c99400; --pencil-deep:#a87400; --on-pencil:#2d2a27;
  --focus-ring:rgba(245,183,0,.5);
  --radius-sm:10px; --radius:14px; --radius-lg:20px;
  --shadow-sm:0 1px 2px rgba(60,40,20,.08);
  --shadow:0 1px 2px rgba(60,40,20,.06), 0 8px 24px rgba(60,40,20,.08);
  --space-1:4px; --space-2:8px; --space-3:12px; --space-4:16px; --space-5:24px; --space-6:32px;
  --font-body:"Nanum Gothic", "Apple SD Gothic Neo", "Malgun Gothic", system-ui, sans-serif;
  --font-display:"Black Han Sans", "Nanum Gothic", "Malgun Gothic", sans-serif;
  --tap:48px; --ease:cubic-bezier(.2, .8, .2, 1); --fast:150ms;
  --bar-h:calc(80px + env(safe-area-inset-bottom));
  --i-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Crect x='3' y='3' width='18' height='18' rx='2'/%3E%3Ccircle cx='9' cy='9' r='2'/%3E%3Cpath d='m21 15-3.1-3.1a2 2 0 0 0-2.8 0L6 21'/%3E%3C/svg%3E");
  --i-shuffle:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M2 18h1.4c1.3 0 2.5-.6 3.3-1.7l6.1-8.6c.7-1.1 2-1.7 3.3-1.7H22'/%3E%3Cpath d='m18 2 4 4-4 4'/%3E%3Cpath d='M2 6h1.9c1.5 0 2.9.9 3.6 2.2'/%3E%3Cpath d='M22 18h-5.9c-1.3 0-2.6-.7-3.3-1.8l-.5-.8'/%3E%3Cpath d='m18 14 4 4-4 4'/%3E%3C/svg%3E");
  --i-play:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolygon points='6 3 20 12 6 21 6 3'/%3E%3C/svg%3E");
  --i-download:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M21 15v4a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2v-4'/%3E%3Cpolyline points='7 10 12 15 17 10'/%3E%3Cline x1='12' x2='12' y1='15' y2='3'/%3E%3C/svg%3E");
  --i-chevron:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  --chevron-ink:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%232d2a27' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  font-family:var(--font-body); color:var(--ink); background:var(--paper);
}
* { box-sizing:border-box; }
body {
  margin:0; min-height:100dvh; font-size:16px; line-height:1.55; -webkit-tap-highlight-color:transparent;
  word-break:keep-all; overflow-wrap:break-word; /* Korean wraps between words, not in the middle of one */
  background:radial-gradient(120% 60% at 0% 0%, #fffaf0 0%, transparent 60%), var(--paper);
  padding-bottom:calc(var(--bar-h) + var(--space-5)); /* content never hides behind the fixed action bar */
}
img { max-width:100%; }
.visually-hidden { position:absolute !important; width:1px; height:1px; padding:0; margin:-1px; overflow:hidden; clip:rect(0 0 0 0); white-space:nowrap; border:0; }
.skip-link { position:absolute; left:var(--space-4); top:-64px; z-index:100; background:var(--ink); color:#fff; padding:12px 16px; border-radius:var(--radius-sm); font-weight:700; }
.skip-link:focus { top:var(--space-4); }
:focus-visible { outline:3px solid var(--ink); outline-offset:2px; }

/* ── header ── */
.app-header { display:flex; align-items:center; gap:var(--space-3); width:min(1120px, 100% - 32px); margin:0 auto; padding:var(--space-5) 0 var(--space-4); }
.logo { display:block; flex:none; width:52px; height:52px; object-fit:cover; border-radius:14px; border:1px solid var(--line); box-shadow:var(--shadow-sm); background:var(--card); }
.brand { min-width:0; }
h1 { margin:0; font-family:var(--font-display); font-weight:400; font-size:clamp(1.75rem, 6vw, 2.5rem); line-height:1.1; letter-spacing:-.01em; }
.tagline { margin:4px 0 0; color:var(--ink-muted); font-size:.95rem; line-height:1.45; text-wrap:pretty; }

/* ── layout and cards ── */
.layout { width:min(1120px, 100% - 32px); margin:0 auto; display:grid; grid-template-columns:minmax(0, 1fr); gap:var(--space-4); }
.card { min-width:0; background:var(--card); border:1px solid var(--line); border-radius:var(--radius-lg); box-shadow:var(--shadow); padding:var(--space-5) var(--space-4); }
.step { display:grid; gap:var(--space-4); align-content:start; }
.step-title { display:flex; align-items:center; gap:var(--space-3); margin:0; font-size:1.2rem; font-weight:800; line-height:1.3; }
.step-no { display:grid; place-items:center; flex:none; width:30px; height:30px; border-radius:50%; background:var(--pencil); color:var(--on-pencil); font-size:.95rem; font-weight:800; box-shadow:inset 0 -2px 0 rgba(0,0,0,.14); }

/* ── photo picker ── */
.upload { display:flex; align-items:center; gap:var(--space-4); min-height:92px; padding:var(--space-4); border:2px dashed var(--line-strong); border-radius:var(--radius); background:var(--paper); cursor:pointer; transition:border-color var(--fast) var(--ease), background-color var(--fast) var(--ease); }
.upload:hover { border-color:var(--ink); background:#fbf6ea; }
.upload:has(+ input:focus-visible) { outline:3px solid var(--ink); outline-offset:2px; }
.upload-icon { display:grid; place-items:center; flex:none; width:52px; height:52px; border-radius:50%; background:var(--pencil); box-shadow:inset 0 -3px 0 rgba(0,0,0,.14); }
.upload-icon::before { content:""; width:26px; height:26px; background:var(--on-pencil); -webkit-mask:var(--i-image) center / contain no-repeat; mask:var(--i-image) center / contain no-repeat; }
.upload-text { display:grid; gap:2px; min-width:0; }
.upload-text strong { font-size:1.1rem; }
.upload-text small { color:var(--ink-muted); font-size:.9rem; overflow-wrap:anywhere; }
.upload.loading { border-style:solid; border-color:var(--pencil-deep); background:#fff8e6; }
.upload.loading .upload-text small { color:var(--ink); font-weight:700; }
.upload.loading .upload-icon::before { -webkit-mask:none; mask:none; background:none; width:24px; height:24px; border-radius:50%; border:3px solid rgba(45,42,39,.25); border-top-color:var(--ink); animation:spin .9s linear infinite; }
.status { margin:0; padding:var(--space-3) var(--space-4); border-radius:var(--radius); background:var(--paper); color:var(--ink-muted); font-size:.92rem; line-height:1.5; min-height:3.3em; }

/* ── form fields ── */
.field { display:grid; gap:6px; min-width:0; }
.field > label, .group-label { margin:0; font-weight:700; font-size:.98rem; }
.help { margin:0; color:var(--ink-muted); font-size:.86rem; line-height:1.45; }
.help.center { text-align:center; }
input[type="text"], input[type="number"], textarea, select {
  width:100%; min-height:var(--tap); padding:10px 14px; font:inherit; font-size:16px; color:var(--ink);
  background:var(--field); border:1.5px solid var(--line-strong); border-radius:var(--radius);
  transition:border-color var(--fast) var(--ease), box-shadow var(--fast) var(--ease);
}
textarea { resize:vertical; line-height:1.45; }
::placeholder { color:var(--placeholder); opacity:1; }
input:focus-visible, textarea:focus-visible, select:focus-visible { outline:none; border-color:var(--ink); box-shadow:0 0 0 4px var(--focus-ring); }
select { appearance:none; -webkit-appearance:none; padding-right:44px; cursor:pointer; background:var(--field) var(--chevron-ink) no-repeat right 12px center / 20px; }
input:disabled, textarea:disabled, select:disabled { opacity:.5; cursor:not-allowed; }

/* ── suggestion box ── */
.suggest { display:grid; gap:var(--space-3); padding:var(--space-4); background:var(--paper); border:1px solid var(--line); border-radius:var(--radius); }
.suggest-row { display:grid; grid-template-columns:minmax(0, 1fr) auto; gap:var(--space-2); }
.phrase-count { display:flex; flex-wrap:wrap; align-items:center; justify-content:space-between; gap:var(--space-1) var(--space-3); padding-top:var(--space-2); border-top:1px dashed var(--line); }
.btn.btn-link { min-height:44px; padding:0 2px; color:var(--ink); background:none; border:0; font-size:.88rem; font-weight:700; text-decoration:underline; text-underline-offset:3px; }
.btn.btn-link[hidden] { display:none; }

/* ── buttons ── */
.btn {
  display:inline-flex; align-items:center; justify-content:center; gap:8px; min-height:var(--tap); padding:0 18px;
  font:inherit; font-size:1rem; font-weight:800; white-space:nowrap; cursor:pointer; touch-action:manipulation;
  border-radius:var(--radius); border:1.5px solid transparent;
  transition:background-color var(--fast) var(--ease), border-color var(--fast) var(--ease), transform 100ms var(--ease);
}
.btn:active:not(:disabled) { transform:scale(.98); }
.btn:disabled { opacity:.5; cursor:not-allowed; }
.btn-primary {
  color:var(--on-pencil); border-color:var(--pencil-edge); box-shadow:inset 0 -3px 0 rgba(0,0,0,.14);
  background:linear-gradient(90deg, rgba(45,42,39,.16) var(--progress, 0%), transparent var(--progress, 0%)), var(--pencil); /* export progress fills the button */
}
.btn-primary:hover:not(:disabled) { background-color:var(--pencil-hover); background-image:linear-gradient(90deg, rgba(45,42,39,.16) var(--progress, 0%), transparent var(--progress, 0%)); }
.btn-primary:disabled[style*="--progress"] { opacity:1; cursor:progress; }
.btn-secondary { color:var(--ink); background:var(--field); border-color:var(--line-strong); }
.btn-secondary:hover:not(:disabled) { border-color:var(--ink); }
.icon::before { content:""; flex:none; width:20px; height:20px; background:currentColor; -webkit-mask:var(--i) center / contain no-repeat; mask:var(--i) center / contain no-repeat; }
.icon-shuffle { --i:var(--i-shuffle); } .icon-play { --i:var(--i-play); } .icon-download { --i:var(--i-download); }

/* ── checkboxes and sliders ── */
.check { display:flex; align-items:center; gap:var(--space-3); min-height:var(--tap); cursor:pointer; font-size:.98rem; line-height:1.4; }
.check input { flex:none; width:24px; height:24px; margin:0; accent-color:var(--ink); cursor:pointer; }
.check span { display:grid; gap:2px; }
.check small { color:var(--ink-muted); font-size:.84rem; }
.slider { grid-template-columns:minmax(0, 1fr) auto; align-items:center; column-gap:var(--space-3); }
.slider input[type="range"] { grid-column:1 / -1; }
.num { display:inline-flex; align-items:center; gap:6px; color:var(--ink-muted); font-weight:700; }
.num input { width:5.4em; min-height:46px; padding:6px 10px; text-align:right; font-variant-numeric:tabular-nums; }
input[type="range"] { width:100%; height:32px; margin:0; accent-color:var(--pencil-deep); cursor:pointer; }

/* ── settings (folded) ── */
.settings summary { display:flex; align-items:center; gap:var(--space-3); min-height:var(--tap); cursor:pointer; list-style:none; }
.settings summary::-webkit-details-marker { display:none; }
.settings summary::after { content:""; margin-left:auto; width:24px; height:24px; flex:none; background:var(--ink); -webkit-mask:var(--i-chevron) center / contain no-repeat; mask:var(--i-chevron) center / contain no-repeat; transition:transform 200ms var(--ease); }
.settings[open] summary::after { transform:rotate(180deg); }
.settings:not([open]) { gap:0; }
.summary-text { display:grid; gap:2px; }
.summary-text small { color:var(--ink-muted); font-size:.84rem; font-weight:400; }
fieldset { display:grid; gap:var(--space-3); min-width:0; margin:0; padding:var(--space-4) 0 0; border:0; border-top:1px solid var(--line); }
legend { float:left; width:100%; margin:0 0 var(--space-1); padding:0; color:var(--ink-muted); font-size:.85rem; font-weight:800; letter-spacing:.04em; }

/* ── preview stage ── */
.canvas-wrap { position:relative; width:100%; max-width:440px; margin:0 auto; overflow:hidden; border-radius:var(--radius); background:#6d4c33; box-shadow:0 14px 32px rgba(60,40,20,.28); }
.canvas-wrap canvas { display:block; width:100%; height:auto; aspect-ratio:9 / 16; touch-action:pan-y; cursor:crosshair; }
.busy { position:absolute; inset:0; display:flex; flex-direction:column; align-items:center; justify-content:flex-start; gap:var(--space-3); padding:22% var(--space-5) var(--space-5); text-align:center; color:#fffdf8; background:rgba(45,42,39,.78); backdrop-filter:blur(3px); }
.busy[hidden] { display:none; }
.busy strong { font-size:1.08rem; line-height:1.45; white-space:pre-line; }
.busy small { color:#ffd76a; font-variant-numeric:tabular-nums; }
.spinner { width:46px; height:46px; border-radius:50%; border:4px solid rgba(255,253,248,.25); border-top-color:var(--pencil); animation:spin .9s linear infinite; }
@keyframes spin { to { transform:rotate(360deg); } }

/* ── fixed action bar ── */
.action-bar {
  position:fixed; left:0; right:0; bottom:0; z-index:40; display:grid; grid-template-columns:minmax(0, 1fr) minmax(0, 1.7fr); gap:var(--space-3);
  padding:12px max(16px, calc((100% - 1120px) / 2)) calc(12px + env(safe-area-inset-bottom));
  background:rgba(255,253,248,.94); backdrop-filter:blur(12px); border-top:1px solid var(--line); box-shadow:0 -6px 20px rgba(60,40,20,.08);
}
.action-bar .btn { min-height:56px; font-size:1.05rem; padding:0 12px; }

/* ── wider screens: controls on the left, the preview stays in view on the right ── */
@media (min-width:960px) {
  .layout { grid-template-columns:minmax(0, 1fr) minmax(360px, 440px); grid-template-areas:"photo stage" "words stage" "settings stage"; align-items:start; gap:var(--space-5); }
  .step-photo { grid-area:photo; } .step-words { grid-area:words; } .settings { grid-area:settings; }
  .stage { grid-area:stage; position:sticky; top:var(--space-4); }
  .canvas-wrap { max-width:min(440px, calc((100dvh - 250px) * 9 / 16)); }
  .card { padding:var(--space-5); }
}
@media (prefers-reduced-motion:reduce) {
  *, *::before, *::after { transition-duration:.01ms !important; scroll-behavior:auto !important; }
  .spinner, .upload.loading .upload-icon::before { animation-duration:2.4s; }
}

/* Comfortable review controls, including keyboard focus. */
.preview-tools { padding: 18px 4px 4px; }
.preview-tools label { display: flex; justify-content: space-between; font-weight: 700; }
.preview-tools output { color: #655138; font-size: 14px; }
.preview-tools input { width: 100%; margin: 16px 0; accent-color: #775339; }
.review-actions { display: flex; gap: 10px; flex-wrap: wrap; }
.review-actions button { flex: 1; min-height: 46px; font-size: 15px; }
button[aria-pressed="true"] { background: #e8d6b8; border-color: #775339; }
:focus-visible { outline: 3px solid #916a36; outline-offset: 4px; }
/* Project and letter controls */
#message { width:100%; min-height:260px; resize:vertical; line-height:1.65; }
#signaturePreset { margin-bottom:10px; }
.photo-queue { display:grid; grid-template-columns:repeat(auto-fill,minmax(125px,1fr)); gap:10px; }
.photo-item { min-width:0; border:1px solid #ddcdb5; border-radius:12px; padding:6px; }
.photo-item > button { width:100%; padding:6px; border:1px solid transparent; border-radius:8px; background:#faf4e9; color:#342c23; cursor:pointer; }
.photo-item > button[aria-pressed="true"] { border-color:#916a36; background:#ecdabb; }
.photo-item img { width:100%; height:85px; object-fit:cover; border-radius:5px; }
.photo-item span { display:block; overflow:hidden; text-overflow:ellipsis; white-space:nowrap; font-size:13px; }
.photo-order { display:flex; gap:3px; padding-top:6px; }
.photo-order button { flex:1; padding:6px 2px; font-size:12px; border:1px solid #ddcdb5; border-radius:4px; background:#fffaf1; cursor:pointer; }
.canvas-wrap.landscape { max-width:100%; }
.canvas-wrap.landscape canvas { aspect-ratio:16 / 9; }
.background-choices {display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin-top:12px}
.background-choices button {padding:5px;background:#fffaf0;border:2px solid transparent;border-radius:10px;min-width:0;color:#493b2c}
.background-choices button[aria-pressed="true"] {border-color:#91662e;background:#f5e4c2}
.background-choices img {display:block;width:100%;aspect-ratio:3/2;object-fit:cover;border-radius:5px}
.background-choices span {display:block;font-size:14px;margin:6px 0;white-space:normal}