:root {
  color-scheme: light;
  --font-sans: "IBM Plex Sans", "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  --font-mono: "IBM Plex Mono", "SFMono-Regular", Consolas, monospace;

  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;

  --size-xs: 0.75rem;
  --size-sm: 0.875rem;
  --size-md: 1rem;
  --size-lg: 1.125rem;
  --size-xl: 1.375rem;
  --size-2xl: 1.875rem;

  --radius-xs: 6px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 22px;

  --shadow-soft: 0 18px 44px rgba(35, 76, 111, 0.12);
  --shadow-panel: 0 12px 32px rgba(35, 76, 111, 0.14);
  --shadow-focus: 0 0 0 3px rgba(53, 155, 211, 0.22);
  --transition-fast: 0.2s ease;

  --color-primary: #2388c7;
  --color-primary-hover: #36a4df;
  --color-primary-dark: #126195;
  --color-accent: #27b4c7;
  --color-bg-main: #eef7fc;
  --color-bg-secondary: #f7fbfe;
  --color-bg-tertiary: #e5f2fa;
  --color-bg-elevated: #ffffff;
  --color-text-main: #173247;
  --color-text-secondary: #546a7c;
  --color-text-muted: #7f94a5;
  --color-border: rgba(35, 136, 199, 0.18);
  --color-border-strong: rgba(35, 136, 199, 0.34);
  --color-surface-highlight: rgba(35, 136, 199, 0.08);
  --color-success: #1f9d67;
  --color-danger: #bf3f4a;
  --color-warning: #c9821f;
}

* { box-sizing: border-box; }

html { background: var(--color-bg-main); }

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-sans);
  color: var(--color-text-main);
  background:
    radial-gradient(circle at top left, rgba(54, 164, 223, 0.16) 0, transparent 28%),
    radial-gradient(circle at top right, rgba(39, 180, 199, 0.12) 0, transparent 24%),
    linear-gradient(180deg, #f8fcff 0%, var(--color-bg-main) 54%, #eaf5fb 100%);
}

a { color: var(--color-primary-dark); text-decoration: none; transition: color var(--transition-fast); }
a:hover { color: var(--color-primary); }

button, input, select, textarea { font: inherit; }

button,
.btn,
.btn-secondary,
.btn-ghost,
.nav-link-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  min-height: 42px;
  padding: 0.7rem 1rem;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: background var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast), color var(--transition-fast);
}

button,
.btn {
  background: linear-gradient(180deg, var(--color-primary-hover) 0%, var(--color-primary) 100%);
  color: #ffffff;
  font-weight: 750;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.22), 0 10px 24px rgba(35, 136, 199, 0.2);
}

button:hover,
.btn:hover { transform: translateY(-1px); background: linear-gradient(180deg, #58b7e8 0%, var(--color-primary-hover) 100%); }

.btn-secondary,
.secondary,
.nav-link-button {
  background: rgba(255, 255, 255, 0.72);
  color: var(--color-primary-dark);
  border: 1px solid var(--color-border);
  box-shadow: none;
  font-weight: 700;
}

.btn-secondary:hover,
.secondary:hover,
.nav-link-button:hover {
  background: #ffffff;
  border-color: var(--color-border-strong);
  transform: translateY(-1px);
}

button:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
.btn:focus-visible,
.btn-secondary:focus-visible,
.nav-link-button:focus-visible {
  outline: none;
  box-shadow: var(--shadow-focus);
}

button:disabled { opacity: 0.72; cursor: not-allowed; transform: none; }

input,
select,
textarea {
  width: 100%;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  background: rgba(255, 255, 255, 0.92);
  color: var(--color-text-main);
  padding: 0.78rem 0.9rem;
  transition: border-color var(--transition-fast), background var(--transition-fast), box-shadow var(--transition-fast);
}

input::placeholder,
textarea::placeholder { color: var(--color-text-muted); }
textarea { resize: vertical; line-height: 1.55; }

label {
  display: grid;
  gap: var(--space-2);
  color: var(--color-text-secondary);
  font-weight: 650;
}

.app-shell { width: 100%; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-6);
  padding: 1rem 1.6rem;
  border-bottom: 1px solid rgba(35, 136, 199, 0.12);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.94) 0%, rgba(248, 252, 255, 0.86) 100%);
  backdrop-filter: blur(12px);
}

.brand-block {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  min-width: 0;
}

.brand-mark {
  display: inline-grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 14px;
  color: #ffffff;
  background: linear-gradient(145deg, var(--color-primary), var(--color-accent));
  box-shadow: 0 12px 26px rgba(35, 136, 199, 0.22);
  font-size: 0.82rem;
  font-weight: 850;
  letter-spacing: 0.04em;
}

.brand-copy h1,
.brand-copy p { margin: 0; }
.brand-copy h1 { font-size: var(--size-lg); line-height: 1.1; }
.brand-copy p { color: var(--color-text-muted); font-size: var(--size-sm); margin-top: 0.15rem; }
.brand-copy a { color: var(--color-text-main); }

.top-nav {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.inline-form { margin: 0; display: inline-flex; }

.nav-user-pill {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  max-width: 260px;
  padding: 0.45rem 0.8rem;
  border-radius: 999px;
  border: 1px solid rgba(35, 136, 199, 0.14);
  background: rgba(255, 255, 255, 0.75);
  color: var(--color-text-secondary);
  font-size: var(--size-sm);
  font-weight: 700;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.nav-link,
.nav-button {
  min-height: 36px;
  padding: 0.48rem 0.75rem;
  font-size: var(--size-sm);
}

.page-shell {
  max-width: 1180px;
  margin: 0 auto;
  padding: var(--space-8) var(--space-6) var(--space-12);
}

.hero-panel,
.panel {
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-panel);
}

.hero-panel {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--space-6);
  width: min(760px, 100%);
  padding: var(--space-6);
  margin: 0 auto var(--space-5);
}

.panel { padding: var(--space-6); margin-bottom: var(--space-6); }

.panel-header,
.report-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--space-4);
  margin-bottom: var(--space-5);
}

.eyebrow {
  display: block;
  margin: 0 0 var(--space-2);
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: var(--size-xs);
  font-weight: 800;
}

h1, h2, h3 { letter-spacing: 0; }
.hero-panel h2,
.panel h2,
.panel h3,
.case-row h4 { margin: 0; }

.hero-copy,
.panel-subtitle,
.panel-note,
.case-detail,
.empty-state,
.muted { color: var(--color-text-secondary); }

.auth-panel {
  width: min(460px, 100%);
  margin: 10vh auto 0;
}

.grid-form,
.stack { display: grid; gap: var(--space-4); }
.auth-form { margin-top: var(--space-5); }

.workspace {
  min-height: calc(100vh - 180px);
  display: grid;
  align-content: center;
  gap: var(--space-5);
}

.upload-card {
  width: min(760px, 100%);
  margin: 0 auto;
  display: grid;
  gap: var(--space-5);
}

.dropzone {
  min-height: 180px;
  display: grid;
  place-items: center;
  border: 1px dashed rgba(35, 136, 199, 0.38);
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.92) 0%, rgba(229, 242, 250, 0.7) 100%);
  cursor: pointer;
}

.dropzone:hover,
.dropzone:focus-within {
  border-color: var(--color-primary);
  background: #ffffff;
  box-shadow: var(--shadow-focus);
}

.dropzone input {
  position: absolute;
  inline-size: 1px;
  block-size: 1px;
  opacity: 0;
}

.dropzone span {
  color: var(--color-primary-dark);
  font-size: var(--size-lg);
  font-weight: 800;
}

.file-list,
.rows { display: grid; gap: var(--space-3); }

.file-item,
.case-row,
.row {
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: var(--space-3);
  align-items: center;
  padding: 0.95rem 1rem;
  border: 1px solid rgba(35, 136, 199, 0.12);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.72);
  color: var(--color-text-main);
  text-decoration: none;
  box-shadow: 0 8px 20px rgba(35, 76, 111, 0.06);
}

.case-row:hover,
.row:hover {
  border-color: var(--color-border-strong);
  background: #ffffff;
}

.file-item small,
.case-row small,
.row small { color: var(--color-text-muted); }

.process { width: 100%; }

.status-banner,
.notice {
  margin: 0 0 var(--space-5);
  padding: 0.9rem 1rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: rgba(255, 255, 255, 0.8);
  color: var(--color-text-secondary);
  box-shadow: 0 8px 22px rgba(35, 76, 111, 0.06);
}

.status-banner-danger,
.notice.error {
  border-color: rgba(191, 63, 74, 0.25);
  background: rgba(255, 245, 246, 0.94);
  color: var(--color-danger);
}

.report-view { display: grid; gap: var(--space-4); }
.report-head { margin-bottom: 0; }
.report-head p { margin: var(--space-1) 0 0; color: var(--color-text-muted); }
.actions { display: flex; gap: var(--space-2); flex-wrap: wrap; }

textarea {
  min-height: calc(100vh - 260px);
  padding: var(--space-5);
  line-height: 1.58;
  font-family: var(--font-sans);
}

.list-page,
.admin-grid { display: grid; gap: var(--space-5); }

.admin-grid {
  grid-template-columns: minmax(280px, 380px) 1fr;
  align-items: start;
}

.key-panel {
  width: min(760px, 100%);
  margin: 0 auto;
  padding: var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.64);
}

.key-panel summary {
  color: var(--color-text-secondary);
  cursor: pointer;
  font-size: var(--size-sm);
  font-weight: 750;
}

.key-panel .compact { margin-top: var(--space-4); }

.processing-status {
  position: fixed;
  left: 50%;
  bottom: 22px;
  z-index: 20;
  width: min(560px, calc(100vw - 32px));
  padding: 14px 16px;
  transform: translate(-50%, 24px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.96);
  box-shadow: var(--shadow-soft);
  opacity: 0;
  pointer-events: none;
  transition: opacity 180ms ease, transform 180ms ease;
}

body.processing .processing-status { opacity: 1; transform: translate(-50%, 0); }

.processing-track {
  height: 8px;
  overflow: hidden;
  border-radius: 999px;
  background: #d9edf8;
}

.processing-track span {
  display: block;
  width: 42%;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--color-primary-dark), var(--color-accent), var(--color-primary));
  animation: breathe-progress 1.8s ease-in-out infinite;
}

.processing-status p {
  margin: 9px 0 0;
  color: var(--color-text-secondary);
  font-size: var(--size-sm);
  text-align: center;
}

body.processing .upload-card { opacity: 0.72; }
body.processing .process { cursor: wait; }

@keyframes breathe-progress {
  0% { transform: translateX(-55%) scaleX(0.55); opacity: 0.55; }
  50% { transform: translateX(75%) scaleX(1); opacity: 1; }
  100% { transform: translateX(210%) scaleX(0.55); opacity: 0.55; }
}

@media (max-width: 780px) {
  .site-header,
  .panel-header,
  .report-head,
  .hero-panel {
    flex-direction: column;
    align-items: stretch;
  }

  .site-header { gap: var(--space-4); padding: var(--space-4); }
  .top-nav { justify-content: flex-start; }
  .page-shell { padding: var(--space-5) var(--space-3) var(--space-8); }
  .admin-grid,
  .file-item,
  .case-row,
  .row { grid-template-columns: 1fr; }
}