:root {
  color-scheme: dark;
  --bg: #080a0f;
  --panel: rgba(18, 21, 30, 0.88);
  --panel-strong: #12151e;
  --surface: #0c0f16;
  --surface-hover: #141925;
  --border: rgba(255, 255, 255, 0.09);
  --border-strong: rgba(255, 255, 255, 0.16);
  --text: #f5f7fb;
  --muted: #9299a9;
  --accent: #8b7cff;
  --accent-strong: #a69bff;
  --accent-soft: rgba(139, 124, 255, 0.14);
  --success: #67d6a2;
  --danger: #ff7d8d;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.36);
  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 11px;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  --sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  min-width: 320px;
  background: var(--bg);
}

body {
  min-height: 100vh;
  margin: 0;
  color: var(--text);
  font-family: var(--sans);
  background:
    radial-gradient(circle at 12% 0%, rgba(139, 124, 255, 0.14), transparent 34rem),
    radial-gradient(circle at 88% 16%, rgba(74, 190, 255, 0.08), transparent 28rem),
    var(--bg);
}

button,
input,
select {
  font: inherit;
}

button,
label,
select,
input[type="radio"] {
  -webkit-tap-highlight-color: transparent;
}

button:focus-visible,
input:focus-visible,
select:focus-visible,
.drop-zone:focus-visible {
  outline: 2px solid var(--accent-strong);
  outline-offset: 3px;
}

.app-shell {
  width: min(1400px, calc(100% - 40px));
  margin: 0 auto;
  padding: 44px 0 28px;
}

.hero {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 28px;
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--accent-strong);
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.16em;
}

.hero h1,
.output-header h2 {
  margin: 0;
  letter-spacing: -0.04em;
}

.hero h1 {
  font-size: clamp(2.5rem, 7vw, 5rem);
  line-height: 0.96;
}

.hero-copy {
  max-width: 620px;
  margin: 14px 0 0;
  color: var(--muted);
  font-size: clamp(0.95rem, 2vw, 1.08rem);
  line-height: 1.65;
}

.privacy-pill {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 9px;
  padding: 10px 13px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.035);
  color: #cdd2dc;
  font-size: 0.82rem;
  font-weight: 700;
}

.privacy-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--success);
  box-shadow: 0 0 0 5px rgba(103, 214, 162, 0.1);
}

.workspace {
  display: grid;
  grid-template-columns: minmax(300px, 410px) minmax(0, 1fr);
  gap: 20px;
  align-items: start;
}

.panel {
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--panel);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.controls-panel {
  padding: 8px 24px 24px;
}

.control-section {
  padding: 24px 0;
  border-bottom: 1px solid var(--border);
}

.section-heading {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 18px;
}

.section-heading h2 {
  margin: 0;
  font-size: 0.98rem;
  letter-spacing: -0.02em;
}

.section-heading p,
.field-hint {
  margin: 5px 0 0;
  color: var(--muted);
  font-size: 0.78rem;
  line-height: 1.45;
}

.step-number {
  display: grid;
  width: 28px;
  height: 28px;
  flex: 0 0 auto;
  place-items: center;
  border-radius: 9px;
  background: var(--accent-soft);
  color: var(--accent-strong);
  font-family: var(--mono);
  font-size: 0.67rem;
  font-weight: 800;
}

.drop-zone {
  display: grid;
  min-height: 156px;
  place-items: center;
  align-content: center;
  gap: 5px;
  padding: 22px;
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.025);
  cursor: pointer;
  transition: border-color 160ms ease, background 160ms ease, transform 160ms ease;
}

.drop-zone:hover,
.drop-zone.is-dragging {
  border-color: rgba(166, 155, 255, 0.72);
  background: var(--accent-soft);
  transform: translateY(-1px);
}

.upload-icon {
  display: grid;
  width: 42px;
  height: 42px;
  margin-bottom: 6px;
  place-items: center;
  border-radius: 13px;
  background: var(--accent-soft);
  color: var(--accent-strong);
  font-size: 1.35rem;
  font-weight: 800;
}

.drop-title {
  font-weight: 800;
}

.drop-copy {
  color: var(--muted);
  font-size: 0.8rem;
}

.preview-card {
  display: grid;
  grid-template-columns: 74px minmax(0, 1fr);
  gap: 12px;
  align-items: center;
  margin-top: 12px;
  padding: 10px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.025);
}

.preview-card img {
  width: 74px;
  height: 58px;
  object-fit: cover;
  border-radius: 10px;
  background: var(--surface);
}

.preview-info {
  min-width: 0;
}

.preview-info strong,
.preview-info span {
  display: block;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.preview-info strong {
  font-size: 0.84rem;
}

.preview-info span {
  margin-top: 4px;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.7rem;
}

.mode-switch {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4px;
  padding: 4px;
  border: 1px solid var(--border);
  border-radius: 13px;
  background: var(--surface);
}

.mode-option {
  position: relative;
  cursor: pointer;
}

.mode-option input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.mode-option span {
  display: grid;
  min-height: 38px;
  place-items: center;
  border-radius: 9px;
  color: var(--muted);
  font-size: 0.8rem;
  font-weight: 800;
  transition: color 150ms ease, background 150ms ease;
}

.mode-option input:checked + span {
  background: var(--surface-hover);
  color: var(--text);
  box-shadow: inset 0 0 0 1px var(--border);
}

.mode-option input:focus-visible + span {
  outline: 2px solid var(--accent-strong);
  outline-offset: 2px;
}

.field-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 12px;
}

.field {
  display: grid;
  gap: 8px;
}

.field + .field {
  margin-top: 12px;
}

.field-grid .field + .field {
  margin-top: 0;
}

.field > span {
  color: #bec4cf;
  font-size: 0.76rem;
  font-weight: 750;
}

.input-shell {
  display: flex;
  align-items: center;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface);
  transition: border-color 150ms ease;
}

.input-shell:focus-within {
  border-color: rgba(166, 155, 255, 0.56);
}

.input-shell input {
  min-width: 0;
  flex: 1;
  border: 0;
  background: transparent;
}

.input-shell > span {
  padding-right: 11px;
  color: #777f8f;
  font-family: var(--mono);
  font-size: 0.68rem;
}

input[type="number"],
input[type="text"],
select {
  width: 100%;
  min-height: 42px;
  padding: 9px 11px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--text);
}

input[type="number"]:focus,
input[type="text"]:focus,
select:focus {
  border-color: rgba(166, 155, 255, 0.56);
}

input:disabled {
  color: #656c79;
  cursor: not-allowed;
}

select {
  cursor: pointer;
}

.field-hint {
  margin-top: 9px;
}

.form-actions {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 10px;
  padding-top: 20px;
}

.button {
  min-height: 42px;
  padding: 9px 15px;
  border: 1px solid transparent;
  border-radius: 12px;
  cursor: pointer;
  font-weight: 800;
  transition: transform 150ms ease, background 150ms ease, border-color 150ms ease, color 150ms ease;
}

.button:not(:disabled):hover {
  transform: translateY(-1px);
}

.button:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.button-primary {
  background: var(--accent);
  color: #fff;
}

.button-primary:not(:disabled):hover {
  background: var(--accent-strong);
}

.button-ghost {
  border-color: var(--border);
  background: rgba(255, 255, 255, 0.035);
  color: #d7dbe3;
}

.button-ghost:not(:disabled):hover {
  border-color: var(--border-strong);
  background: rgba(255, 255, 255, 0.07);
}

.button-small {
  min-height: 36px;
  padding: 7px 12px;
  border-radius: 10px;
  font-size: 0.78rem;
}

.output-panel {
  min-width: 0;
  overflow: hidden;
}

.output-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 22px 24px 16px;
}

.output-header h2 {
  font-size: 1.3rem;
}

.output-meta {
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.7rem;
  text-align: right;
}

.output-toolbar {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  padding: 0 24px 14px;
  border-bottom: 1px solid var(--border);
}

.output-stage {
  min-height: 620px;
  max-height: calc(100vh - 190px);
  overflow: auto;
  background:
    linear-gradient(rgba(255, 255, 255, 0.018) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.018) 1px, transparent 1px),
    #07090d;
  background-size: 24px 24px;
}

.empty-state {
  display: grid;
  min-height: 620px;
  place-items: center;
  align-content: center;
  gap: 9px;
  padding: 30px;
  color: var(--muted);
  text-align: center;
}

.empty-state strong {
  color: #d9dde5;
  font-size: 0.95rem;
}

.empty-state span:last-child {
  max-width: 370px;
  font-size: 0.8rem;
  line-height: 1.55;
}

.empty-mark {
  display: grid;
  width: 58px;
  height: 58px;
  margin-bottom: 4px;
  place-items: center;
  border: 1px solid var(--border);
  border-radius: 18px;
  background: var(--accent-soft);
  color: var(--accent-strong);
  font-family: var(--mono);
  font-size: 1.05rem;
  font-weight: 900;
}

pre#ascii-art {
  width: max-content;
  min-width: 100%;
  min-height: 100%;
  margin: 0;
  padding: 24px;
  color: #e8e7ff;
  font-family: var(--mono);
  font-size: 8px;
  font-variant-ligatures: none;
  line-height: 0.86;
  letter-spacing: 0;
  tab-size: 2;
  white-space: pre;
  user-select: text;
}

.footer {
  padding: 22px 4px 0;
  color: #626978;
  font-size: 0.74rem;
  text-align: center;
}

.toast {
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 10;
  max-width: min(360px, calc(100vw - 40px));
  padding: 12px 14px;
  border: 1px solid var(--border-strong);
  border-radius: 12px;
  background: #181c26;
  box-shadow: 0 16px 50px rgba(0, 0, 0, 0.4);
  color: var(--text);
  font-size: 0.8rem;
  font-weight: 700;
  opacity: 0;
  pointer-events: none;
  transform: translateY(8px);
  transition: opacity 150ms ease, transform 150ms ease;
}

.toast.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.toast.is-error {
  border-color: rgba(255, 125, 141, 0.4);
  color: #ffd7dc;
}

.is-hidden {
  display: none !important;
}

@media (max-width: 940px) {
  .app-shell {
    width: min(760px, calc(100% - 28px));
    padding-top: 28px;
  }

  .workspace {
    grid-template-columns: 1fr;
  }

  .output-stage,
  .empty-state {
    min-height: 480px;
  }

  .output-stage {
    max-height: 70vh;
  }
}

@media (max-width: 560px) {
  .app-shell {
    width: min(100% - 20px, 760px);
  }

  .hero {
    align-items: flex-start;
    flex-direction: column;
  }

  .controls-panel {
    padding-inline: 18px;
  }

  .field-grid {
    grid-template-columns: 1fr;
  }

  .field-grid .field + .field {
    margin-top: 0;
  }

  .output-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .output-meta {
    text-align: left;
  }

  .output-toolbar {
    justify-content: stretch;
  }

  .output-toolbar .button {
    flex: 1;
  }

  .output-stage,
  .empty-state {
    min-height: 420px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}

/* Compact header and language control */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 20px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.brand-mark {
  display: grid;
  width: 36px;
  height: 36px;
  place-items: center;
  border: 1px solid var(--border);
  border-radius: 11px;
  background: var(--accent-soft);
  color: var(--accent-strong);
  font-family: var(--mono);
  font-size: 0.78rem;
  font-weight: 900;
}

.brand h1 {
  margin: 0;
  font-size: 1.25rem;
  letter-spacing: -0.03em;
}

.language-control select {
  width: auto;
  min-width: 110px;
  min-height: 36px;
  padding: 6px 30px 6px 10px;
  font-size: 0.78rem;
}

.control-section > h2 {
  margin: 0 0 14px;
  font-size: 0.84rem;
  letter-spacing: -0.01em;
}

.upload-mark {
  display: grid;
  width: 36px;
  height: 36px;
  margin-bottom: 4px;
  place-items: center;
  border-radius: 11px;
  background: var(--accent-soft);
  color: var(--accent-strong);
  font-size: 1.3rem;
  font-weight: 500;
}

.drop-zone strong {
  font-size: 0.88rem;
}

.drop-zone > span:last-child {
  color: var(--muted);
  font-size: 0.75rem;
}

.output-header h2 {
  font-size: 1rem;
}

.empty-state {
  gap: 12px;
}

.empty-state strong {
  font-size: 0.85rem;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

@media (max-width: 560px) {
  .topbar {
    align-items: center;
  }

  .language-control select {
    min-width: 100px;
  }
}