:root {
  color-scheme: light;
  --navy: #252A61;
  --navy-hover: #343B82;
  --blue: #3157D5;
  --blue-hover: #2646B4;
  --ink: #151A2D;
  --muted: #667085;
  --soft: #AEB7DD;
  --line: #D9DFEA;
  --line-strong: #C9D2E3;
  --page: #F3F5F9;
  --panel: #FFFFFF;
  --panel-soft: #F7F9FC;
  --input: #FBFCFE;
  --bar: #E7EBF2;
  --green: #16A765;
  --red: #D93025;
  --shadow: 0 12px 36px rgba(21, 26, 45, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Segoe UI", Arial, sans-serif;
  background: var(--page);
  color: var(--ink);
}

.app-shell {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 250px minmax(0, 1fr);
}

.sidebar {
  width: 250px;
  background: var(--navy);
  color: #FFFFFF;
  padding: 26px 22px;
  display: flex;
  flex-direction: column;
}

.logo-panel {
  height: 76px;
  display: grid;
  place-items: center;
  border-radius: 8px;
  background: #FFFFFF;
  margin: 0 2px 22px;
  padding: 16px;
}

.logo-panel img {
  width: min(170px, 100%);
  height: auto;
  display: block;
}

.brand {
  margin: 0 4px 26px;
}

h1,
h2,
h3,
p {
  margin: 0;
}

h1 {
  font-size: 18px;
  line-height: 1.2;
  font-weight: 800;
  letter-spacing: 0;
}

.brand p {
  margin-top: 3px;
  color: #BFC6E7;
  font-size: 11px;
}

.steps {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 14px;
}

.steps li {
  display: grid;
  grid-template-columns: 36px minmax(0, 1fr);
  column-gap: 12px;
  row-gap: 1px;
  align-items: center;
  color: #FFFFFF;
}

.steps li span {
  grid-row: 1 / 3;
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  border-radius: 6px;
  background: var(--navy-hover);
  color: #FFFFFF;
  font-size: 11px;
  font-weight: 800;
}

.steps li strong {
  font-size: 12px;
  line-height: 1.2;
}

.steps li small {
  color: var(--soft);
  font-size: 9px;
  line-height: 1.25;
}

.sidebar-note {
  margin-top: auto;
  padding: 22px 4px 0;
  color: var(--soft);
  font-size: 11px;
}

.workspace {
  padding: 24px 30px;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto auto;
  gap: 18px;
}

.topbar {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
}

.topbar h2 {
  font-size: 26px;
  line-height: 1.2;
  font-weight: 800;
}

.topbar p {
  margin-top: 2px;
  color: var(--muted);
  font-size: 12px;
}

.icon-button,
.primary-button,
.secondary-button {
  min-height: 42px;
  border-radius: 6px;
  padding: 0 18px;
  font: inherit;
  font-size: 13px;
  font-weight: 800;
  cursor: pointer;
}

.icon-button {
  min-height: 34px;
  border: 1px solid var(--line);
  background: #FFFFFF;
  color: var(--muted);
}

.icon-button:hover {
  background: #EEF1F7;
}

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

.logout-link {
  min-height: 34px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 0 13px;
  background: #FFFFFF;
  color: var(--navy);
  font-size: 13px;
  font-weight: 800;
  text-decoration: none;
}

.logout-link:hover {
  background: #EEF1F7;
}

.tool-grid {
  display: grid;
  grid-template-columns: minmax(320px, 4fr) minmax(420px, 6fr);
  grid-template-rows: minmax(360px, 1fr) auto;
  gap: 20px;
}

.panel,
.action-panel,
.log-panel {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: var(--shadow);
}

.panel {
  min-height: 360px;
  padding: 18px 20px;
  display: flex;
  flex-direction: column;
}

.panel-heading {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}

.step-number {
  display: none;
}

.panel-heading h3 {
  font-size: 15px;
  line-height: 1.25;
  font-weight: 800;
}

.panel-heading h3::first-letter {
  color: inherit;
}

.drop-zone {
  min-height: 148px;
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  display: grid;
  place-items: center;
  align-content: center;
  gap: 8px;
  text-align: center;
  color: var(--muted);
  background: var(--panel-soft);
  cursor: pointer;
  padding: 18px;
}

.drop-zone.drag-over {
  border-color: var(--blue);
  background: #EFF3FF;
}

.drop-zone input {
  display: none;
}

.drop-zone strong {
  color: var(--ink);
  font-size: 11px;
  font-weight: 800;
}

.drop-zone small {
  color: var(--muted);
  font-size: 10px;
  line-height: 1.35;
}

.upload-icon {
  min-width: 48px;
  height: 32px;
  display: grid;
  place-items: center;
  border-radius: 6px;
  background: #E9EEFF;
  color: var(--blue);
  font-size: 21px;
  font-weight: 800;
  line-height: 1;
}

.file-list {
  list-style: none;
  padding: 0;
  margin: 12px 0 0;
  display: grid;
  gap: 8px;
  overflow: auto;
}

.file-list li {
  min-height: 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 6px 9px;
  color: var(--ink);
  background: var(--input);
  font-size: 13px;
}

.file-list span {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.file-list b {
  flex: 0 0 auto;
  color: var(--muted);
  font-size: 12px;
  font-weight: 600;
}

.action-panel {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: auto minmax(220px, 1fr) auto;
  align-items: center;
  gap: 16px;
  padding: 16px 20px;
}

.status-line {
  min-width: 150px;
  display: flex;
  align-items: center;
  gap: 9px;
  color: var(--muted);
  font-size: 11px;
  font-weight: 700;
}

.status-dot {
  width: 11px;
  height: 11px;
  border-radius: 999px;
  background: var(--muted);
}

.status-dot.busy {
  background: var(--blue);
}

.status-dot.done {
  background: var(--green);
}

.status-dot.error {
  background: var(--red);
}

progress {
  width: 100%;
  height: 14px;
  border: 0;
  border-radius: 7px;
  overflow: hidden;
  accent-color: var(--blue);
}

progress::-webkit-progress-bar {
  background: var(--bar);
}

progress::-webkit-progress-value {
  background: var(--blue);
}

.buttons {
  display: flex;
  gap: 8px;
}

.primary-button {
  border: 1px solid var(--blue);
  background: var(--blue);
  color: #FFFFFF;
}

.primary-button:hover {
  background: var(--blue-hover);
}

.primary-button:disabled {
  opacity: 0.55;
  cursor: wait;
}

.secondary-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  text-decoration: none;
  background: var(--navy);
  color: #FFFFFF;
}

.secondary-button:hover {
  background: var(--navy-hover);
}

.secondary-button.disabled {
  border-color: var(--line);
  background: #FFFFFF;
  color: var(--muted);
  opacity: 0.55;
  pointer-events: none;
}

.log-panel {
  min-height: 124px;
  padding: 0;
  display: grid;
  grid-template-rows: auto minmax(86px, 1fr);
  background: transparent;
  border: 0;
  box-shadow: none;
}

.log-panel .panel-heading {
  margin: 0 0 6px;
}

#logBox {
  margin: 0;
  min-height: 86px;
  max-height: 210px;
  overflow: auto;
  border: 0;
  border-radius: 6px;
  background: #E9EDF4;
  color: #3E4658;
  padding: 12px;
  font-family: "Segoe UI", Arial, sans-serif;
  font-size: 10px;
  line-height: 1.45;
  white-space: pre-wrap;
}

.footer-copy {
  justify-self: center;
  color: #808899;
  font-size: 11px;
}

.login-body {
  min-height: 100vh;
  display: grid;
  place-items: center;
  background: var(--page);
}

.login-shell {
  width: min(100%, 460px);
  padding: 24px;
}

.login-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #FFFFFF;
  box-shadow: var(--shadow);
  padding: 28px;
}

.login-logo {
  height: 76px;
  display: grid;
  place-items: center;
  border-radius: 8px;
  background: #FFFFFF;
  border: 1px solid var(--line);
  margin-bottom: 20px;
  padding: 16px;
}

.login-logo img {
  width: min(190px, 100%);
  height: auto;
  display: block;
}

.login-kicker {
  color: var(--blue);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0;
}

.login-card h1 {
  margin-top: 4px;
  font-size: 26px;
  color: var(--ink);
}

.login-copy {
  margin-top: 4px;
  color: var(--muted);
  font-size: 12px;
}

.login-error {
  margin-top: 16px;
  border: 1px solid #F3B6B0;
  border-radius: 6px;
  background: #FFF3F2;
  color: var(--red);
  padding: 10px 12px;
  font-size: 12px;
  font-weight: 700;
}

.login-form {
  margin-top: 18px;
  display: grid;
  gap: 12px;
}

.login-form label {
  display: grid;
  gap: 6px;
  color: var(--ink);
  font-size: 12px;
  font-weight: 800;
}

.login-form input {
  width: 100%;
  min-height: 42px;
  border: 1px solid var(--line-strong);
  border-radius: 6px;
  background: var(--input);
  color: var(--ink);
  padding: 0 12px;
  font: inherit;
  font-size: 14px;
}

.login-form input:focus {
  outline: 2px solid #E9EEFF;
  border-color: var(--blue);
}

.login-form button {
  min-height: 42px;
  border: 1px solid var(--blue);
  border-radius: 6px;
  background: var(--blue);
  color: #FFFFFF;
  font: inherit;
  font-size: 13px;
  font-weight: 800;
  cursor: pointer;
}

.login-form button:hover {
  background: var(--blue-hover);
}

.login-card footer {
  margin-top: 20px;
  text-align: center;
  color: #808899;
  font-size: 11px;
}

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

  .sidebar {
    width: auto;
    padding: 18px;
  }

  .logo-panel {
    width: 210px;
  }

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

  .sidebar-note {
    display: none;
  }

  .workspace {
    padding: 22px 18px;
  }

  .tool-grid,
  .action-panel {
    grid-template-columns: 1fr;
  }

  .tool-grid {
    grid-template-rows: auto;
  }

  .buttons {
    flex-wrap: wrap;
  }

  .topbar-actions {
    flex-wrap: wrap;
    justify-content: flex-end;
  }
}

@media (max-width: 620px) {
  .topbar {
    flex-direction: column;
  }

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

  .panel {
    min-height: 0;
  }

  .buttons,
  .primary-button,
  .secondary-button,
  .icon-button,
  .logout-link {
    width: 100%;
  }

  .topbar-actions {
    width: 100%;
  }
}