:root {
  color-scheme: light;
  --bg: #f6f7fb;
  --surface: #ffffff;
  --surface-soft: #f9fafb;
  --text: #172033;
  --muted: #667085;
  --border: #dde3ee;
  --border-strong: #c8d1df;
  --accent: #3157d5;
  --accent-dark: #233ea3;
  --accent-soft: #eaf0ff;
  --success: #12b76a;
  --danger: #b42318;
  --warning: #f79009;
  --shadow: 0 18px 50px rgba(27, 39, 68, 0.10);
  --radius: 18px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-height: 100vh;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(49, 87, 213, 0.12), transparent 28rem),
    linear-gradient(180deg, #ffffff 0%, var(--bg) 28rem);
}

button,
input,
select {
  font: inherit;
}

button,
.button-link {
  appearance: none;
  border: 0;
  border-radius: 12px;
  background: var(--accent);
  color: #ffffff;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  font-weight: 800;
  line-height: 1;
  min-height: 2.75rem;
  padding: 0.8rem 1.05rem;
  text-decoration: none;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}

button:hover,
.button-link:hover {
  background: var(--accent-dark);
  box-shadow: 0 8px 22px rgba(49, 87, 213, 0.24);
  transform: translateY(-1px);
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.58;
  transform: none;
  box-shadow: none;
}

button.secondary,
.secondary {
  background: #ffffff;
  border: 1px solid var(--border-strong);
  color: var(--text);
}

button.secondary:hover,
.secondary:hover {
  background: var(--surface-soft);
  box-shadow: 0 8px 22px rgba(27, 39, 68, 0.08);
}

button.ghost,
.ghost {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
}

button.ghost:hover,
.ghost:hover {
  background: var(--accent-soft);
  border-color: #b9c7ff;
  box-shadow: none;
}

button.compact,
.compact {
  min-height: 2.25rem;
  padding: 0.55rem 0.75rem;
}

.shell {
  width: min(1180px, calc(100vw - 2rem));
  margin: 0 auto;
  padding: 1.25rem 0 4rem;
}

.topbar,
.hero,
.card-header,
.split-heading,
.submit-strip,
.menu-row,
.file-row,
.job-row,
.modal-header,
.modal-actions {
  display: flex;
  align-items: center;
}

.topbar {
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 2.25rem;
}

.brand {
  align-items: center;
  color: inherit;
  display: inline-flex;
  gap: 0.75rem;
  text-decoration: none;
}

.brand-mark {
  align-items: center;
  background: var(--accent);
  border-radius: 14px;
  color: #ffffff;
  display: inline-flex;
  font-weight: 900;
  height: 2.8rem;
  justify-content: center;
  letter-spacing: -0.04em;
  width: 2.8rem;
}

.brand strong,
.brand small {
  display: block;
}

.brand strong {
  font-size: 1.05rem;
}

.brand small {
  color: var(--muted);
  font-size: 0.78rem;
  margin-top: 0.1rem;
}

.top-actions {
  display: flex;
  gap: 0.6rem;
}

.hero {
  align-items: stretch;
  gap: 1rem;
  justify-content: space-between;
  margin-bottom: 1.25rem;
}

.hero-copy {
  flex: 1;
  max-width: 780px;
}

.hero-card {
  align-items: flex-start;
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  display: flex;
  gap: 0.75rem;
  max-width: 350px;
  padding: 1rem;
}

.hero-card p,
.hero-card strong {
  margin: 0;
}

.hero-card p {
  color: var(--muted);
  font-size: 0.92rem;
  margin-top: 0.35rem;
}

.status-dot {
  background: var(--success);
  border-radius: 999px;
  box-shadow: 0 0 0 7px rgba(18, 183, 106, 0.12);
  flex: 0 0 auto;
  height: 0.7rem;
  margin-top: 0.25rem;
  width: 0.7rem;
}

h1,
h2,
h3,
p,
dl,
dd {
  margin-top: 0;
}

h1 {
  font-size: clamp(2.4rem, 6vw, 4.9rem);
  letter-spacing: -0.07em;
  line-height: 0.95;
  margin-bottom: 0.8rem;
}

h2 {
  font-size: clamp(1.35rem, 2vw, 1.75rem);
  letter-spacing: -0.035em;
  margin-bottom: 0.3rem;
}

h3 {
  font-size: 1.05rem;
  margin-bottom: 0.3rem;
}

.subhead {
  color: var(--muted);
  font-size: clamp(1rem, 2vw, 1.2rem);
  line-height: 1.55;
  max-width: 46rem;
}

.eyebrow {
  color: var(--accent);
  font-size: 0.76rem;
  font-weight: 900;
  letter-spacing: 0.12em;
  margin-bottom: 0.35rem;
  text-transform: uppercase;
}

.muted,
.field small,
.choice-card small,
.switch-row small {
  color: var(--muted);
}

.card {
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  margin-bottom: 1rem;
  padding: 1.25rem;
}

.card-header {
  align-items: flex-start;
  gap: 1rem;
  justify-content: space-between;
  margin-bottom: 1.1rem;
}

.card-header p:last-child,
.submit-strip p,
.step-content p,
.note-card p,
.help-steps p {
  margin-bottom: 0;
}

.badge,
.summary-chip {
  background: var(--accent-soft);
  border: 1px solid #cad6ff;
  border-radius: 999px;
  color: var(--accent-dark);
  display: inline-flex;
  font-size: 0.82rem;
  font-weight: 800;
  padding: 0.45rem 0.7rem;
  white-space: nowrap;
}

.workspace {
  align-items: start;
  display: grid;
  gap: 1rem;
  grid-template-columns: minmax(0, 1fr) 330px;
}

.composer {
  padding: 0;
  overflow: hidden;
}

.composer > .card-header,
.composer > .submit-strip {
  padding: 1.25rem;
}

.step-panel {
  border-top: 1px solid var(--border);
  display: grid;
  gap: 1rem;
  grid-template-columns: 2.35rem minmax(0, 1fr);
  padding: 1.25rem;
}

.step-number {
  align-items: center;
  background: var(--accent-soft);
  border: 1px solid #cad6ff;
  border-radius: 999px;
  color: var(--accent-dark);
  display: inline-flex;
  font-weight: 900;
  height: 2.25rem;
  justify-content: center;
  width: 2.25rem;
}

.step-number.small {
  height: 1.9rem;
  margin-bottom: 0.55rem;
  width: 1.9rem;
}

.step-content > p {
  color: var(--muted);
  line-height: 1.5;
  margin-bottom: 0.9rem;
}

.drop-zone {
  align-items: center;
  background: var(--surface-soft);
  border: 1.5px dashed var(--border-strong);
  border-radius: 16px;
  cursor: pointer;
  display: flex;
  gap: 0.85rem;
  padding: 1rem;
  transition: background 0.15s ease, border-color 0.15s ease;
}

.drop-zone:hover {
  background: var(--accent-soft);
  border-color: #9ab0ff;
}

.drop-zone input {
  display: none;
}

.drop-icon {
  align-items: center;
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: 14px;
  color: var(--accent);
  display: inline-flex;
  flex: 0 0 auto;
  font-size: 1.35rem;
  font-weight: 900;
  height: 2.8rem;
  justify-content: center;
  width: 2.8rem;
}

.drop-zone strong,
.drop-zone small {
  display: block;
}

.drop-zone small {
  margin-top: 0.2rem;
}

.file-list {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: 14px;
  color: var(--muted);
  margin-top: 0.8rem;
  max-height: 13rem;
  overflow: auto;
  padding: 0.35rem 0.85rem;
}

.file-list.empty {
  padding: 0.85rem;
}

.file-row,
.job-row {
  gap: 1rem;
  justify-content: space-between;
  padding: 0.65rem 0;
}

.file-row + .file-row,
.job-row + .job-row {
  border-top: 1px solid rgba(102, 112, 133, 0.14);
}

.file-row span:first-child,
.job-row span:first-child {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.choice-grid {
  display: grid;
  gap: 0.7rem;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.choice-card {
  align-items: flex-start;
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: 16px;
  cursor: pointer;
  display: flex;
  gap: 0.65rem;
  padding: 0.9rem;
  transition: border-color 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}

.choice-card:has(input:checked) {
  background: var(--accent-soft);
  border-color: #9ab0ff;
  box-shadow: inset 0 0 0 1px #9ab0ff;
}

.choice-card input {
  accent-color: var(--accent);
  flex: 0 0 auto;
  margin-top: 0.2rem;
}

.choice-card strong,
.choice-card small {
  display: block;
}

.choice-card small {
  line-height: 1.35;
  margin-top: 0.25rem;
}

.split-heading {
  align-items: flex-start;
  gap: 1rem;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.settings-grid {
  display: grid;
  gap: 0.9rem;
  grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
}

.field {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.field span {
  font-weight: 800;
}

select,
input[type="range"] {
  width: 100%;
}

select {
  background: #ffffff;
  border: 1px solid var(--border-strong);
  border-radius: 12px;
  color: var(--text);
  min-height: 2.75rem;
  padding: 0.65rem 0.75rem;
}

input[type="range"] {
  accent-color: var(--accent);
}

.menu-row {
  flex-wrap: wrap;
  gap: 0.7rem;
  justify-content: space-between;
  margin-top: 1rem;
}

.submit-strip {
  align-items: center;
  background: var(--surface-soft);
  border-top: 1px solid var(--border);
  gap: 1rem;
  justify-content: space-between;
}

.side-panel {
  position: sticky;
  top: 1rem;
}

.compact-header {
  margin-bottom: 0.8rem;
}

.setup-list {
  display: grid;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.setup-list div {
  background: var(--surface-soft);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 0.75rem;
}

.setup-list dt {
  color: var(--muted);
  font-size: 0.76rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  margin-bottom: 0.25rem;
  text-transform: uppercase;
}

.setup-list dd {
  font-weight: 800;
  margin-bottom: 0;
  overflow-wrap: anywhere;
}

.tip-box,
.note-card {
  background: #fffaf0;
  border: 1px solid #fedf89;
  border-radius: 14px;
  padding: 0.85rem;
}

.tip-box p,
.note-card p {
  color: var(--muted);
  line-height: 1.45;
  margin-bottom: 0;
  margin-top: 0.35rem;
}

.progress {
  background: #edf1f7;
  border-radius: 999px;
  height: 0.85rem;
  margin: 1rem 0;
  overflow: hidden;
  width: 100%;
}

#progress-bar {
  background: linear-gradient(90deg, var(--accent), var(--success));
  height: 100%;
  transition: width 0.25s ease;
  width: 0%;
}

.details {
  display: grid;
  gap: 0.7rem;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  margin-top: 0.5rem;
}

.detail {
  background: var(--surface-soft);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 0.8rem;
}

.detail b {
  color: var(--muted);
  display: block;
  font-size: 0.76rem;
  letter-spacing: 0.08em;
  margin-bottom: 0.28rem;
  text-transform: uppercase;
}

.downloads {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: 1rem;
}

.errors {
  color: var(--danger);
  margin-top: 1rem;
  white-space: pre-wrap;
}

.recent a {
  color: var(--accent);
  font-weight: 800;
  text-decoration: none;
}

.recent a:hover {
  text-decoration: underline;
}

.job-row small {
  color: var(--muted);
  display: block;
  font-size: 0.84rem;
  font-weight: 500;
  margin-top: 0.2rem;
}

.job-row span:last-child {
  flex: 0 0 auto;
  white-space: nowrap;
}

.modal {
  background: transparent;
  border: 0;
  padding: 0;
  width: min(560px, calc(100vw - 2rem));
}

.modal::backdrop {
  background: rgba(15, 23, 42, 0.45);
  backdrop-filter: blur(3px);
}

.modal-card {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: 22px;
  box-shadow: 0 30px 90px rgba(15, 23, 42, 0.28);
  overflow: hidden;
}

.modal-header,
.modal-body,
.modal-actions {
  padding: 1.1rem;
}

.modal-header {
  border-bottom: 1px solid var(--border);
  gap: 1rem;
  justify-content: space-between;
}

.modal-body {
  display: grid;
  gap: 1rem;
}

.modal-actions {
  background: var(--surface-soft);
  border-top: 1px solid var(--border);
  justify-content: flex-end;
}

.icon-button {
  background: var(--surface-soft);
  border: 1px solid var(--border);
  color: var(--text);
  font-size: 1.35rem;
  font-weight: 700;
  height: 2.35rem;
  min-height: auto;
  padding: 0;
  width: 2.35rem;
}

.switch-row {
  align-items: flex-start;
  background: var(--surface-soft);
  border: 1px solid var(--border);
  border-radius: 14px;
  display: flex;
  gap: 0.75rem;
  padding: 0.9rem;
}

.switch-row input {
  accent-color: var(--accent);
  height: 1.15rem;
  margin-top: 0.2rem;
  width: 1.15rem;
}

.switch-row strong,
.switch-row small {
  display: block;
}

.switch-row small {
  line-height: 1.4;
  margin-top: 0.25rem;
}

.help-steps {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.help-steps div {
  background: var(--surface-soft);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 0.9rem;
}

.help-steps strong {
  display: block;
  margin-bottom: 0.35rem;
}

.hidden { display: none; }

code {
  background: var(--surface-soft);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--accent-dark);
  padding: 0.08rem 0.25rem;
}

@media (max-width: 980px) {
  .workspace {
    grid-template-columns: 1fr;
  }

  .side-panel {
    position: static;
  }

  .setup-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 760px) {
  .shell {
    width: min(100% - 1rem, 1180px);
    padding-top: 0.75rem;
  }

  .topbar,
  .hero,
  .card-header,
  .split-heading,
  .submit-strip {
    align-items: stretch;
    flex-direction: column;
  }

  .hero-card {
    max-width: none;
  }

  .choice-grid,
  .settings-grid,
  .setup-list,
  .help-steps {
    grid-template-columns: 1fr;
  }

  .step-panel {
    grid-template-columns: 1fr;
  }

  .step-number {
    height: 2rem;
    width: 2rem;
  }

  .summary-chip,
  .badge {
    white-space: normal;
  }
}