/* ================= Design tokens ================= */
:root {
  --accent: #7c3aed;
  --accent-soft: #f3eefe;
  --bg: #f4f6f8;
  --surface: #ffffff;
  --text: #1a202e;
  --muted: #67708b;
  --border: #e3e6f0;
  --radius: 12px;
  --shadow: 0 1px 2px rgba(20, 24, 46, 0.05), 0 8px 24px rgba(20, 24, 46, 0.07);
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
.wrap { max-width: 1100px; margin: 0 auto; padding: 0 20px; }

/* ================= Header ================= */
.site-header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 40;
}
.header-row { display: flex; align-items: center; justify-content: space-between; height: 60px; }
.logo { font-size: 19px; font-weight: 800; color: var(--text); text-decoration: none; letter-spacing: -0.01em; }
.logo span { color: var(--accent); }
.site-header nav { display: flex; align-items: center; gap: 20px; }
.site-header nav a { color: var(--muted); text-decoration: none; font-size: 14.5px; font-weight: 500; }
.site-header nav a:hover { color: var(--text); }

/* ================= Hero ================= */
.hero { padding: 42px 0 24px; text-align: center; }
.hero h1 { font-size: clamp(26px, 4.2vw, 40px); margin: 0 0 10px; letter-spacing: -0.02em; }
.hero .sub { max-width: 680px; margin: 0 auto; color: var(--muted); font-size: 16.5px; }

/* ================= Layout ================= */
.app-grid { padding-bottom: 40px; }
.work-col { max-width: 860px; margin: 0 auto; }
.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px 20px;
  box-shadow: var(--shadow);
}

/* ================= Buttons ================= */
.btn {
  font: inherit; font-weight: 600; font-size: 14.5px;
  border-radius: 9px; padding: 10px 16px;
  cursor: pointer; border: 1px solid transparent;
  transition: background .15s, transform .05s;
  text-decoration: none; display: inline-flex; align-items: center; justify-content: center; gap: 6px;
}
.btn:active { transform: translateY(1px); }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover:not(:disabled) { background: color-mix(in srgb, var(--accent) 88%, black); }
.btn-soft { background: var(--accent-soft); color: var(--accent); }
.btn-soft:hover:not(:disabled) { background: color-mix(in srgb, var(--accent) 18%, white); }
.btn-ghost { background: #fff; color: var(--text); border-color: var(--border); }
.btn-ghost:hover:not(:disabled) { background: #f5f6fb; }
.btn-lg { padding: 13px 22px; font-size: 15.5px; }
.lock { font-size: 12px; }

/* ================= Dropzone ================= */
.dropzone {
  text-align: center;
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  cursor: pointer;
  padding: 44px 20px;
  transition: border-color .15s, background .15s;
}
.dropzone:hover, .dropzone.dragging {
  border-color: var(--accent);
  background: var(--accent-soft);
}
.dz-icon { font-size: 38px; margin-bottom: 8px; }
.dz-inner p { margin: 6px 0; }
.dz-hint { font-size: 12.5px; color: var(--muted); }

/* ================= Editor ================= */
.editor { display: flex; flex-direction: column; gap: 14px; }
.toolbar { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.toolbar-spacer { flex: 1; }
.pagenav { display: flex; align-items: center; gap: 8px; font-size: 14px; font-weight: 600; color: var(--muted); }
.icon-btn {
  font: inherit; width: 32px; height: 32px; border-radius: 8px; cursor: pointer;
  border: 1px solid var(--border); background: #fbfbfe; color: var(--muted);
  display: inline-flex; align-items: center; justify-content: center; font-size: 16px;
  transition: all .12s;
}
.icon-btn:hover:not(:disabled) { border-color: var(--accent); color: var(--accent); }
.icon-btn:disabled { opacity: .35; cursor: not-allowed; }

.saved-row { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }
.saved-row .saved-label { font-size: 12.5px; font-weight: 700; color: var(--muted); text-transform: uppercase; letter-spacing: .05em; }
.saved-sig {
  height: 44px; padding: 4px 8px; background: #fbfbfe; border: 1px solid var(--border);
  border-radius: 8px; cursor: pointer; display: inline-flex; align-items: center; gap: 6px;
}
.saved-sig:hover { border-color: var(--accent); }
.saved-sig img { height: 34px; max-width: 130px; object-fit: contain; }
.saved-sig .del { border: none; background: none; color: var(--muted); cursor: pointer; font-size: 12px; padding: 2px; }
.saved-sig .del:hover { color: #b91c1c; }

.viewer-outer { overflow: auto; background: #eceef3; border: 1px solid var(--border); border-radius: var(--radius); padding: 18px; display: flex; justify-content: center; }
.viewer { position: relative; box-shadow: 0 4px 20px rgba(20,24,46,.18); line-height: 0; }
.viewer canvas { display: block; background: #fff; }
.overlay { position: absolute; inset: 0; }

.placed {
  position: absolute; cursor: grab; touch-action: none;
  border: 1.5px dashed transparent; border-radius: 4px;
}
.placed:hover, .placed.selected { border-color: var(--accent); }
.placed img { width: 100%; height: 100%; pointer-events: none; display: block; }
.placed .txt { pointer-events: none; white-space: nowrap; font-family: Helvetica, Arial, sans-serif; color: #111; line-height: 1; }
.placed .handle {
  position: absolute; right: -7px; bottom: -7px; width: 14px; height: 14px;
  background: var(--accent); border-radius: 50%; cursor: nwse-resize;
  border: 2px solid #fff; box-shadow: 0 1px 4px rgba(0,0,0,.3);
  display: none;
}
.placed .rm {
  position: absolute; top: -12px; right: -12px; width: 22px; height: 22px;
  background: #fff; color: #b91c1c; border: 1px solid var(--border); border-radius: 50%;
  font-size: 11px; cursor: pointer; display: none; align-items: center; justify-content: center;
  box-shadow: 0 1px 4px rgba(0,0,0,.15); padding: 0;
}
.placed .allpages {
  position: absolute; top: -12px; left: -12px; height: 22px; padding: 0 8px;
  background: #fff; color: var(--accent); border: 1px solid var(--border); border-radius: 999px;
  font-size: 10.5px; font-weight: 700; cursor: pointer; display: none; align-items: center;
  box-shadow: 0 1px 4px rgba(0,0,0,.15); white-space: nowrap;
}
.placed:hover .handle, .placed.selected .handle,
.placed:hover .rm, .placed.selected .rm { display: flex; }
.placed.initials:hover .allpages, .placed.initials.selected .allpages { display: flex; }

.editor-hint { font-size: 12.5px; color: var(--muted); margin: 0; text-align: center; }
.editor-actions { display: flex; gap: 12px; }
.editor-actions .btn-primary { flex: 1; }

/* ================= Modals ================= */
.modal-backdrop {
  position: fixed; inset: 0; z-index: 100;
  background: rgba(15, 18, 32, 0.55);
  display: flex; align-items: center; justify-content: center; padding: 20px;
}
.modal {
  background: var(--surface); border-radius: 16px; box-shadow: 0 24px 64px rgba(0,0,0,.25);
  max-width: 460px; width: 100%; padding: 26px 28px; position: relative;
}
.sig-modal { max-width: 640px; }
.modal h2 { margin: 0 0 12px; }
.modal-sub { color: var(--muted); font-size: 14px; margin: 0 0 14px; }
.modal-actions { display: flex; gap: 10px; justify-content: flex-end; margin-top: 16px; }
.modal-close {
  position: absolute; top: 12px; right: 12px; border: none; background: none;
  font-size: 16px; cursor: pointer; color: var(--muted); width: 30px; height: 30px; border-radius: 8px;
}
.modal-close:hover { background: var(--bg); color: var(--text); }

.sig-tabs { display: flex; gap: 6px; margin-bottom: 14px; }
.sig-tab {
  font: inherit; font-size: 13.5px; font-weight: 600;
  padding: 7px 16px; border-radius: 8px; cursor: pointer;
  border: 1px solid var(--border); background: #fbfbfe; color: var(--muted);
}
.sig-tab.active { background: var(--accent); border-color: var(--accent); color: #fff; }
.sig-pane canvas {
  width: 100%; background: #fbfbfe;
  border: 1px solid var(--border); border-radius: 10px;
  touch-action: none; cursor: crosshair;
}
.pane-row { display: flex; align-items: center; gap: 12px; margin-top: 8px; }
.pane-hint { font-size: 12.5px; color: var(--muted); }
input[type="text"] {
  font: inherit; font-size: 14.5px; color: var(--text);
  background: #fbfbfe; border: 1px solid var(--border); border-radius: 8px;
  padding: 9px 11px; width: 100%;
}
input[type="text"]:focus {
  outline: none; border-color: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 15%, transparent);
}
#typeInput { margin-bottom: 10px; }
#sigImgInput { margin-bottom: 10px; }
.save-check { display: flex; align-items: center; gap: 8px; font-size: 13.5px; color: var(--muted); margin-top: 14px; }

/* ================= SEO sections ================= */
.seo { padding: 34px 20px 6px; }
.seo h2 { font-size: 24px; letter-spacing: -0.01em; margin: 0 0 18px; }
.seo-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 16px; }
.seo-card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 16px 18px;
}
.seo-card h3 { margin: 0 0 6px; font-size: 15.5px; }
.seo-card p { margin: 0; font-size: 14px; color: var(--muted); }

details {
  background: var(--surface); border: 1px solid var(--border); border-radius: 10px;
  padding: 13px 16px; margin-bottom: 10px;
}
details summary { font-weight: 600; cursor: pointer; font-size: 15px; }
details p { color: var(--muted); font-size: 14px; margin: 10px 0 2px; }

/* ================= Premium modal ================= */
.perks { margin: 0 0 16px; padding-left: 20px; font-size: 14.5px; list-style: none; }
.perks li { margin-bottom: 7px; }
.license-toggle { font-size: 13.5px; margin: 12px 0 0; }
.license-toggle a { color: var(--accent); }
.license-row { display: flex; gap: 8px; margin-top: 10px; }
.license-status { font-size: 13px; margin: 8px 0 0; min-height: 18px; }
.license-status.ok { color: #15803d; }
.license-status.err { color: #b91c1c; }
#buyBtn { width: 100%; }

/* ================= Footer / misc ================= */
.site-footer { padding: 30px 0 40px; text-align: center; color: var(--muted); font-size: 13.5px; }
.site-footer a { color: var(--accent); }
.ad-slot { min-height: 90px; }
.toast {
  position: fixed; bottom: 26px; left: 50%; transform: translateX(-50%);
  background: var(--text); color: #fff; font-size: 14px; font-weight: 600;
  padding: 11px 20px; border-radius: 999px; z-index: 200;
  box-shadow: 0 8px 24px rgba(0,0,0,.25);
}

@media (max-width: 640px) {
  .toolbar .btn { font-size: 13px; padding: 8px 10px; }
  .viewer-outer { padding: 8px; }
}