:root {
  color-scheme: dark;
  --ss-bg: #070b14;
  --ss-panel: rgba(15, 20, 34, 0.92);
  --ss-panel-2: rgba(22, 28, 46, 0.92);
  --ss-line: rgba(156, 163, 255, 0.16);
  --ss-line-strong: rgba(156, 163, 255, 0.3);
  --ss-text: #f5f7ff;
  --ss-muted: #9ea7be;
  --ss-purple: #8b5cf6;
  --ss-purple-2: #6d4aff;
  --ss-blue: #4f8cff;
  --ss-success: #49d69d;
  --ss-danger: #ff6b7a;
  --ss-radius: 20px;
  --ss-shadow: 0 24px 70px rgba(0, 0, 0, 0.34);
}

* { box-sizing: border-box; }

body.signature-studio-page {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 10% -10%, rgba(109, 74, 255, 0.22), transparent 34rem),
    radial-gradient(circle at 100% 20%, rgba(79, 140, 255, 0.13), transparent 35rem),
    linear-gradient(180deg, #080c16 0%, #070a12 100%);
  color: var(--ss-text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

button, input, select, textarea { font: inherit; }
button, select, input[type="color"], input[type="range"] { cursor: pointer; }
button:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible, a:focus-visible {
  outline: 3px solid rgba(139, 92, 246, 0.45);
  outline-offset: 2px;
}

.ss-site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 68px;
  padding: 0 28px;
  border-bottom: 1px solid var(--ss-line);
  background: rgba(7, 11, 20, 0.82);
  backdrop-filter: blur(18px);
}

.ss-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ss-text);
  text-decoration: none;
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}
.ss-brand strong { color: #a987ff; }
.ss-brand-mark {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border: 1px solid rgba(139, 92, 246, 0.45);
  border-radius: 10px;
  background: linear-gradient(135deg, rgba(139, 92, 246, 0.3), rgba(79, 140, 255, 0.12));
  color: #c8b8ff;
  font-size: 1.4rem;
}
.ss-site-nav { display: flex; align-items: center; gap: 20px; }
.ss-site-nav a { color: var(--ss-muted); text-decoration: none; font-size: 0.92rem; }
.ss-site-nav a:hover { color: var(--ss-text); }

.ss-shell { width: min(1680px, calc(100% - 36px)); margin: 0 auto; padding: 42px 0 70px; }
.ss-heading {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 32px;
  margin-bottom: 26px;
}
.ss-heading h1 { margin: 5px 0 10px; font-size: clamp(2.3rem, 4vw, 4.6rem); line-height: 0.98; letter-spacing: -0.055em; }
.ss-heading p:not(.ss-kicker) { max-width: 760px; margin: 0; color: var(--ss-muted); line-height: 1.65; }
.ss-kicker { margin: 0; color: #a987ff; font-size: 0.75rem; font-weight: 800; letter-spacing: 0.16em; text-transform: uppercase; }
.ss-back-link { display: inline-block; margin-bottom: 14px; color: #c5b7ff; text-decoration: none; font-weight: 650; }
.ss-heading-badges { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 8px; max-width: 520px; }
.ss-heading-badges span {
  padding: 8px 11px;
  border: 1px solid var(--ss-line);
  border-radius: 999px;
  background: rgba(19, 24, 39, 0.76);
  color: #bdc5d8;
  font-size: 0.78rem;
}

.ss-toolbar {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
  padding: 12px;
  border: 1px solid var(--ss-line);
  border-radius: 16px;
  background: rgba(12, 17, 29, 0.8);
  box-shadow: 0 12px 34px rgba(0, 0, 0, 0.18);
}
.ss-toolbar-group { display: flex; gap: 8px; }
.ss-toolbar-status { margin-left: auto; color: var(--ss-muted); font-size: 0.83rem; }

.ss-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 0 15px;
  border: 1px solid transparent;
  border-radius: 11px;
  color: var(--ss-text);
  background: transparent;
  font-size: 0.87rem;
  font-weight: 720;
  text-decoration: none;
  transition: transform 0.16s ease, border-color 0.16s ease, background 0.16s ease, opacity 0.16s ease;
}
.ss-btn:hover { transform: translateY(-1px); }
.ss-btn:disabled { opacity: 0.5; cursor: wait; transform: none; }
.ss-btn--primary { background: linear-gradient(135deg, var(--ss-purple-2), var(--ss-blue)); box-shadow: 0 9px 24px rgba(109, 74, 255, 0.22); }
.ss-btn--primary:hover { box-shadow: 0 12px 32px rgba(109, 74, 255, 0.32); }
.ss-btn--secondary { border-color: rgba(139, 92, 246, 0.38); background: rgba(109, 74, 255, 0.12); }
.ss-btn--secondary:hover { background: rgba(109, 74, 255, 0.2); }
.ss-btn--ghost { border-color: var(--ss-line); background: rgba(255, 255, 255, 0.025); color: #c7cede; }
.ss-btn--ghost:hover { border-color: var(--ss-line-strong); background: rgba(255, 255, 255, 0.055); color: white; }

.ss-workspace { display: grid; grid-template-columns: minmax(430px, 560px) minmax(0, 1fr); gap: 16px; align-items: start; }
.ss-controls, .ss-preview-column {
  border: 1px solid var(--ss-line);
  border-radius: var(--ss-radius);
  background: var(--ss-panel);
  box-shadow: var(--ss-shadow);
}
.ss-controls { overflow: hidden; }
.ss-preview-column { position: sticky; top: 84px; padding: 20px; }

.ss-tabs {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 6px;
  padding: 10px;
  border-bottom: 1px solid var(--ss-line);
  background: rgba(9, 13, 23, 0.7);
  overflow-x: auto;
}
.ss-tab {
  min-width: 66px;
  padding: 10px 6px;
  border: 1px solid transparent;
  border-radius: 10px;
  background: transparent;
  color: var(--ss-muted);
  font-size: 0.76rem;
  font-weight: 750;
}
.ss-tab:hover { color: var(--ss-text); background: rgba(255,255,255,0.035); }
.ss-tab.is-active { color: white; border-color: rgba(139, 92, 246, 0.36); background: rgba(109, 74, 255, 0.18); }

.ss-panel { max-height: calc(100vh - 155px); overflow-y: auto; padding: 22px; scrollbar-width: thin; scrollbar-color: rgba(139, 92, 246, 0.35) transparent; }
.ss-panel[hidden] { display: none !important; }
.ss-section-title { margin-bottom: 20px; }
.ss-section-title h2 { margin: 0 0 5px; font-size: 1.25rem; }
.ss-section-title p { margin: 0; color: var(--ss-muted); font-size: 0.88rem; line-height: 1.5; }
.ss-subheading { margin: 0 0 12px; font-size: 0.9rem; color: #d7dcf0; text-transform: uppercase; letter-spacing: 0.08em; }
.ss-divider { height: 1px; margin: 22px 0; background: var(--ss-line); }

.ss-grid { display: grid; gap: 12px; margin-bottom: 13px; }
.ss-grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.ss-grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.ss-field { display: flex; flex-direction: column; gap: 7px; min-width: 0; margin-bottom: 13px; }
.ss-grid .ss-field { margin-bottom: 0; }
.ss-field > span { color: #bcc4d7; font-size: 0.78rem; font-weight: 680; }
.ss-field input[type="text"], .ss-field input[type="number"], .ss-field textarea, .ss-field select, .ss-inline-form input, .ss-copy-row input {
  width: 100%;
  min-height: 42px;
  padding: 10px 12px;
  border: 1px solid var(--ss-line);
  border-radius: 10px;
  background: rgba(6, 10, 19, 0.72);
  color: var(--ss-text);
  transition: border-color 0.16s ease, background 0.16s ease;
}
.ss-field textarea { min-height: 76px; resize: vertical; line-height: 1.45; }
.ss-field input:hover, .ss-field textarea:hover, .ss-field select:hover, .ss-inline-form input:hover { border-color: rgba(139, 92, 246, 0.3); }
.ss-field select option, .ss-field select optgroup { background: #111726; color: white; }
.ss-color-field input[type="color"] { width: 100%; height: 42px; padding: 4px; border: 1px solid var(--ss-line); border-radius: 10px; background: rgba(6, 10, 19, 0.72); }

.ss-range-row { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 10px; min-height: 42px; padding: 0 10px; border: 1px solid var(--ss-line); border-radius: 10px; background: rgba(6, 10, 19, 0.72); }
.ss-range-row input[type="range"] { width: 100%; accent-color: var(--ss-purple); }
.ss-range-row output { min-width: 46px; color: #c8b9ff; font-size: 0.75rem; text-align: right; font-variant-numeric: tabular-nums; }

.ss-toggle-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; margin: 10px 0 15px; }
.ss-toggle { display: flex; align-items: center; gap: 9px; min-height: 42px; padding: 9px 11px; border: 1px solid var(--ss-line); border-radius: 10px; background: rgba(255,255,255,0.02); color: #c0c7d9; font-size: 0.78rem; cursor: pointer; }
.ss-toggle:hover { border-color: rgba(139, 92, 246, 0.3); }
.ss-toggle input { width: 16px; height: 16px; accent-color: var(--ss-purple); }

.ss-file-card {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 145px;
  margin: 8px 0 15px;
  padding: 20px;
  border: 1px dashed rgba(139, 92, 246, 0.46);
  border-radius: 14px;
  background: linear-gradient(145deg, rgba(109, 74, 255, 0.1), rgba(79, 140, 255, 0.04));
  color: #dce1f0;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.16s ease, background 0.16s ease, transform 0.16s ease;
}
.ss-file-card:hover, .ss-file-card.is-dragging { border-color: rgba(167, 139, 250, 0.9); background: rgba(109, 74, 255, 0.16); transform: translateY(-1px); }
.ss-file-card input { position: absolute; inset: 0; width: 100%; height: 100%; opacity: 0; cursor: pointer; }
.ss-file-card-icon { margin-bottom: 7px; color: #a987ff; font-size: 1.8rem; }
.ss-file-card span { margin-top: 4px; color: var(--ss-muted); font-size: 0.8rem; }
.ss-file-card small { margin-top: 10px; color: #8fa0bf; }

.ss-preset-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
.ss-preset-card { display: grid; grid-template-columns: 48px 1fr; grid-template-rows: auto auto; gap: 2px 10px; padding: 10px; border: 1px solid var(--ss-line); border-radius: 12px; background: rgba(255,255,255,0.025); color: white; text-align: left; }
.ss-preset-card:hover { border-color: rgba(139, 92, 246, 0.44); background: rgba(109, 74, 255, 0.09); }
.ss-preset-card strong { align-self: end; font-size: 0.82rem; }
.ss-preset-card small { color: var(--ss-muted); font-size: 0.7rem; }
.ss-preset-swatch { grid-row: 1 / span 2; width: 48px; height: 48px; border-radius: 9px; border: 1px solid rgba(255,255,255,0.12); }
.ss-preset-swatch--elegant { background: linear-gradient(135deg, #0b0e18, #352166 58%, #c5b6ff); }
.ss-preset-swatch--neon { background: radial-gradient(circle, #a855f7, #081525 58%, #02050a); box-shadow: inset 0 0 14px #54e7ff; }
.ss-preset-swatch--marker { background: linear-gradient(135deg, #f8e25b, #fb6c45 55%, #24120c); }
.ss-preset-swatch--vintage { background: linear-gradient(135deg, #e8d4ae, #8a6847 55%, #2d2117); }
.ss-preset-swatch--minimal { background: linear-gradient(135deg, #f4f4f4 50%, #20242a 50%); }
.ss-preset-swatch--gold { background: radial-gradient(circle at 30% 20%, #f8d878, #9e6b14 44%, #090806 70%); }

.ss-inline-form { display: grid; grid-template-columns: 1fr auto; gap: 9px; }
.ss-inline-actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.ss-file-button { position: relative; overflow: hidden; }
.ss-file-button input { position: absolute; inset: 0; opacity: 0; cursor: pointer; }
.ss-custom-presets { display: grid; gap: 8px; margin-top: 10px; }
.ss-custom-preset { display: grid; grid-template-columns: 1fr auto auto; gap: 8px; align-items: center; padding: 9px 10px; border: 1px solid var(--ss-line); border-radius: 10px; background: rgba(255,255,255,0.02); }
.ss-custom-preset strong { font-size: 0.8rem; }
.ss-empty-state { margin: 10px 0 0; color: var(--ss-muted); font-size: 0.8rem; }

.ss-export-summary { display: flex; justify-content: space-between; align-items: center; gap: 15px; margin: 14px 0; padding: 13px 14px; border: 1px solid rgba(139,92,246,0.25); border-radius: 12px; background: rgba(109,74,255,0.09); }
.ss-export-summary span { color: var(--ss-muted); font-size: 0.79rem; }
.ss-export-summary strong { color: #ddd5ff; font-variant-numeric: tabular-nums; }
.ss-export-buttons { display: grid; grid-template-columns: 1.2fr 1fr 1fr; gap: 8px; }
.ss-upload-result { margin-top: 16px; padding: 14px; border: 1px solid rgba(73,214,157,0.28); border-radius: 14px; background: rgba(73,214,157,0.06); }
.ss-copy-row { display: grid; grid-template-columns: 1fr auto; gap: 8px; }

.ss-preview-header { display: flex; align-items: flex-end; justify-content: space-between; gap: 15px; margin-bottom: 16px; }
.ss-preview-header h2 { margin: 3px 0 0; font-size: 1.35rem; }
.ss-preview-meta { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 7px; }
.ss-preview-meta span { padding: 6px 9px; border: 1px solid var(--ss-line); border-radius: 999px; color: var(--ss-muted); font-size: 0.7rem; }
.ss-preview-stage {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 460px;
  padding: 30px;
  overflow: hidden;
  border: 1px solid var(--ss-line);
  border-radius: 18px;
  background:
    linear-gradient(45deg, rgba(255,255,255,0.025) 25%, transparent 25%),
    linear-gradient(-45deg, rgba(255,255,255,0.025) 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, rgba(255,255,255,0.025) 75%),
    linear-gradient(-45deg, transparent 75%, rgba(255,255,255,0.025) 75%),
    #080c15;
  background-size: 28px 28px;
  background-position: 0 0, 0 14px, 14px -14px, -14px 0;
}
.ss-canvas-wrap { position: relative; max-width: 100%; filter: drop-shadow(0 22px 32px rgba(0,0,0,0.38)); }
#ssCanvas, #ssFullscreenCanvas { display: block; max-width: 100%; height: auto; border-radius: 8px; }
.ss-safe-guide { position: absolute; inset: 14%; border: 1px dashed rgba(255,255,255,0.42); border-radius: 6px; pointer-events: none; opacity: 0; transition: opacity 0.16s ease; }
.ss-safe-guide.is-visible { opacity: 1; }
.ss-preview-actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; }
.ss-status { display: flex; align-items: center; gap: 9px; margin-top: 14px; padding: 11px 12px; border: 1px solid var(--ss-line); border-radius: 11px; background: rgba(255,255,255,0.02); color: #b8c0d3; font-size: 0.8rem; }
.ss-status.is-error { border-color: rgba(255,107,122,0.35); color: #ffabb4; }
.ss-status.is-success { border-color: rgba(73,214,157,0.35); color: #9cf2cd; }
.ss-status-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--ss-success); box-shadow: 0 0 12px rgba(73,214,157,0.7); }
.ss-status.is-error .ss-status-dot { background: var(--ss-danger); box-shadow: 0 0 12px rgba(255,107,122,0.7); }
.ss-tips { display: grid; grid-template-columns: auto 1fr; gap: 7px 10px; margin-top: 18px; padding-top: 16px; border-top: 1px solid var(--ss-line); }
.ss-tips h3 { grid-column: 1 / -1; margin: 0 0 4px; color: #dbe0ef; font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.09em; }
.ss-tips div { display: contents; }
.ss-tips span { color: var(--ss-muted); font-size: 0.75rem; }
kbd { display: inline-block; min-width: 24px; padding: 3px 6px; border: 1px solid var(--ss-line-strong); border-bottom-width: 2px; border-radius: 6px; background: rgba(255,255,255,0.04); color: #d2d8e8; font-size: 0.66rem; text-align: center; }

.ss-dialog { width: min(96vw, 1500px); max-width: none; padding: 0; border: 1px solid var(--ss-line-strong); border-radius: 20px; background: #090e18; color: white; box-shadow: 0 30px 100px rgba(0,0,0,0.7); }
.ss-dialog::backdrop { background: rgba(2,4,9,0.82); backdrop-filter: blur(8px); }
.ss-dialog-bar { display: flex; align-items: center; justify-content: space-between; gap: 15px; padding: 14px 16px; border-bottom: 1px solid var(--ss-line); }
.ss-dialog-preview { display: grid; place-items: center; min-height: 60vh; padding: 24px; overflow: auto; background: #050810; }

@media (max-width: 1180px) {
  .ss-workspace { grid-template-columns: 1fr; }
  .ss-preview-column { position: static; order: -1; }
  .ss-panel { max-height: none; }
  .ss-preview-stage { min-height: 360px; }
}

@media (max-width: 760px) {
  .ss-site-header { padding: 0 16px; }
  .ss-site-nav { gap: 12px; }
  .ss-site-nav a:nth-child(2) { display: none; }
  .ss-shell { width: min(100% - 20px, 1680px); padding-top: 26px; }
  .ss-heading { align-items: flex-start; flex-direction: column; }
  .ss-heading-badges { justify-content: flex-start; }
  .ss-toolbar { flex-wrap: wrap; }
  .ss-toolbar-status { width: 100%; margin-left: 0; padding-left: 3px; }
  .ss-tabs { grid-template-columns: repeat(3, minmax(90px, 1fr)); }
  .ss-panel { padding: 17px; }
  .ss-grid--2, .ss-grid--3, .ss-toggle-grid, .ss-preset-grid, .ss-export-buttons { grid-template-columns: 1fr; }
  .ss-preview-column { padding: 14px; }
  .ss-preview-stage { min-height: 280px; padding: 13px; }
  .ss-preview-header { align-items: flex-start; flex-direction: column; }
  .ss-preview-meta { justify-content: flex-start; }
  .ss-preview-actions .ss-btn { flex: 1 1 calc(50% - 8px); }
}