:root {
  color-scheme: light;
  --lumen-navy: #07244a;
  --lumen-blue: #244e9a;
  --lumen-orange: #fa6405;
  --lumen-orange-soft: #ff7922;
  --lumen-bg: #f5f7fa;
  --lumen-surface: #ffffff;
  --lumen-surface-raised: #ffffff;
  --lumen-text: #132238;
  --lumen-muted: #64748b;
  --lumen-border: #dbe3ee;
  --lumen-focus: rgba(36, 78, 154, 0.24);
  --lumen-shadow: 0 18px 45px rgba(7, 36, 74, 0.09);
}

html[data-theme="dark"] {
  color-scheme: dark;
  --lumen-navy: #f3f6fa;
  --lumen-blue: #5b8fdc;
  --lumen-orange: #ff8a3d;
  --lumen-orange-soft: #ff9d61;
  --lumen-bg: #0e1622;
  --lumen-surface: #162235;
  --lumen-surface-raised: #1d2c42;
  --lumen-text: #f3f6fa;
  --lumen-muted: #aab7c8;
  --lumen-border: #2c3e55;
  --lumen-focus: rgba(91, 143, 220, 0.3);
  --lumen-shadow: 0 18px 45px rgba(0, 0, 0, 0.26);
}

html,
body {
  background: var(--lumen-bg);
  color: var(--lumen-text);
}

body.lumen-app {
  min-height: 100dvh;
  background:
    radial-gradient(circle at 5% 0%, rgba(36, 78, 154, 0.09), transparent 34rem),
    var(--lumen-bg);
}

.lumen-app .title,
.lumen-app .subtitle,
.lumen-app .label,
.lumen-app strong,
.lumen-app .content,
.lumen-app .modal-card-title {
  color: var(--lumen-text);
}

.lumen-app .has-text-grey,
.lumen-app .has-text-grey-light,
.lumen-app .help {
  color: var(--lumen-muted) !important;
}

.lumen-app .box,
.lumen-app .card,
.lumen-app .modal-card-head,
.lumen-app .modal-card-body,
.lumen-app .modal-card-foot,
.lumen-app .panel,
.lumen-app .notification:not(.is-danger):not(.is-success):not(.is-warning) {
  background: var(--lumen-surface);
  color: var(--lumen-text);
  border-color: var(--lumen-border);
  box-shadow: var(--lumen-shadow);
}

.lumen-app .input,
.lumen-app .textarea,
.lumen-app .select select {
  background: var(--lumen-surface-raised);
  border-color: var(--lumen-border);
  color: var(--lumen-text);
}

.lumen-app .input::placeholder,
.lumen-app .textarea::placeholder {
  color: var(--lumen-muted);
}

.lumen-app .input:focus,
.lumen-app .textarea:focus,
.lumen-app .select select:focus,
.lumen-app button:focus-visible,
.lumen-app a:focus-visible {
  border-color: var(--lumen-blue);
  box-shadow: 0 0 0 4px var(--lumen-focus);
  outline: none;
}

.lumen-app .button.is-link,
.lumen-app .button.is-primary {
  background: var(--lumen-blue);
  border-color: transparent;
  color: #fff;
}

.lumen-app .button.is-warning,
.lumen-app .button.lumen-accent {
  background: var(--lumen-orange);
  border-color: transparent;
  color: #fff;
}

.lumen-app .button.is-light,
.lumen-app .button.is-white {
  background: var(--lumen-surface-raised);
  border-color: var(--lumen-border);
  color: var(--lumen-text);
}

.lumen-app hr {
  background-color: var(--lumen-border);
}

.lumen-app .result-card.is-viewed {
  background: color-mix(in srgb, var(--lumen-blue) 12%, var(--lumen-surface));
}

.lumen-app .results-scroll,
.lumen-app .filters-col.is-drawer {
  background: var(--lumen-surface) !important;
  border-color: var(--lumen-border) !important;
}

.lumen-app-bar {
  position: sticky;
  inset-block-start: 0;
  z-index: 40;
  border-bottom: 1px solid var(--lumen-border);
  background: color-mix(in srgb, var(--lumen-bg) 88%, transparent);
  backdrop-filter: blur(16px);
}

.lumen-app-bar__inner {
  width: min(1120px, calc(100% - 2rem));
  min-height: 64px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.lumen-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  color: var(--lumen-text);
  font-weight: 800;
  letter-spacing: 0.08em;
}

.lumen-brand:hover { color: var(--lumen-blue); }

.lumen-brand__mark {
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  border-radius: 11px;
  color: #fff;
  background: linear-gradient(145deg, var(--lumen-blue), var(--lumen-orange));
  box-shadow: 0 8px 22px rgba(36, 78, 154, 0.24);
}

.lumen-nav-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.theme-toggle {
  width: 42px;
  height: 42px;
  padding: 0;
  border: 1px solid var(--lumen-border);
  border-radius: 12px;
  color: var(--lumen-text);
  background: var(--lumen-surface);
  cursor: pointer;
}

.theme-toggle--floating {
  position: fixed;
  right: 1rem;
  bottom: 1rem;
  z-index: 80;
  box-shadow: var(--lumen-shadow);
}

.lumen-page {
  width: min(920px, calc(100% - 2rem));
  margin: 0 auto;
  padding: clamp(1.5rem, 4vw, 3.5rem) 0 7rem;
}

.lumen-upload-page {
  width: min(1120px, calc(100% - 2rem));
  padding-top: clamp(1rem, 2.5vw, 1.75rem);
}

.lumen-eyebrow {
  margin-bottom: 0.5rem;
  color: var(--lumen-orange);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.upload-intro {
  margin-bottom: 1.5rem;
}

.upload-intro .title {
  margin-bottom: 0.6rem;
  font-size: clamp(1.8rem, 5vw, 2.7rem);
}

.upload-intro--compact {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1.5rem;
  margin-bottom: 0.85rem;
}

.upload-intro--compact .lumen-eyebrow { margin-bottom: 0.2rem; }
.upload-intro--compact .title {
  margin-bottom: 0;
  font-size: clamp(1.7rem, 3vw, 2.15rem);
}

.upload-intro--compact .subtitle {
  max-width: 440px;
  color: var(--lumen-muted);
  text-align: right;
}

.upload-flow {
  display: grid;
  gap: 0.75rem;
}

.flow-card {
  padding: clamp(0.9rem, 2vw, 1.15rem);
  border: 1px solid var(--lumen-border);
  border-radius: 17px;
  background: var(--lumen-surface);
  box-shadow: var(--lumen-shadow);
}

.flow-heading {
  display: flex;
  align-items: flex-start;
  gap: 0.8rem;
  margin-bottom: 1.2rem;
}

.flow-number {
  flex: 0 0 32px;
  width: 32px;
  height: 32px;
  display: grid;
  place-items: center;
  border-radius: 10px;
  color: #fff;
  background: var(--lumen-blue);
  font-weight: 800;
}

.flow-heading--compact {
  align-items: center;
  margin-bottom: 0.8rem;
}

.flow-heading--compact .help { margin-top: 0; }

.capture-card {
  display: grid;
  grid-template-columns: minmax(185px, 0.32fr) minmax(0, 1fr);
  align-items: center;
  gap: 0.65rem 1rem;
}

.capture-card .flow-heading { margin-bottom: 0; }

.capture-zone {
  position: relative;
  display: flex;
  align-items: center;
  min-height: 78px;
  padding: 0.75rem 1rem;
  border: 2px dashed color-mix(in srgb, var(--lumen-blue) 55%, var(--lumen-border));
  border-radius: 14px;
  background: color-mix(in srgb, var(--lumen-blue) 6%, var(--lumen-surface));
  transition: border-color 160ms ease, transform 160ms ease, background 160ms ease;
}

.capture-zone:hover {
  border-color: var(--lumen-orange);
  transform: translateY(-1px);
}

.capture-zone input {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  cursor: pointer;
}

.capture-icon {
  color: var(--lumen-blue);
  font-size: 1.6rem;
}

.capture-zone__content {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  min-width: 0;
  text-align: left;
}

.capture-feedback {
  grid-column: 2;
  display: grid;
  grid-template-columns: minmax(180px, 0.8fr) minmax(260px, 1.2fr);
  gap: 0.55rem;
}

.file-summary {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  min-width: 0;
  margin-top: 0;
  padding: 0.55rem 0.65rem;
  border-radius: 11px;
  background: var(--lumen-surface-raised);
  border: 1px solid var(--lumen-border);
}

.file-summary__text { min-width: 0; }

.file-summary__text strong {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.file-preview {
  width: 42px;
  height: 42px;
  flex: 0 0 42px;
  object-fit: cover;
  border-radius: 8px;
  background: var(--lumen-bg);
}

.analysis-status {
  display: flex;
  align-items: center;
  min-height: 54px;
  margin-top: 0;
  padding: 0.6rem 0.75rem;
  border-radius: 11px;
  color: var(--lumen-muted);
  background: color-mix(in srgb, var(--lumen-blue) 7%, var(--lumen-surface));
}

.analysis-status.is-busy i { animation: lumen-spin 900ms linear infinite; }
.analysis-status.is-error { color: #b42318; background: rgba(180, 35, 24, 0.1); }
.analysis-status.is-ready { color: #137a45; background: rgba(19, 122, 69, 0.1); }

@keyframes lumen-spin { to { transform: rotate(360deg); } }

.context-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.7rem;
  padding: 0.6rem 0.7rem;
  border: 1px solid color-mix(in srgb, var(--lumen-orange) 35%, var(--lumen-border));
  border-radius: 12px;
  background: color-mix(in srgb, var(--lumen-orange) 7%, var(--lumen-surface));
}

.metadata-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.metadata-field.is-wide { grid-column: 1 / -1; }

.metadata-grid--compact {
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.7rem 0.75rem;
}

.metadata-grid--compact .metadata-field {
  min-width: 0;
  margin-bottom: 0;
}

.metadata-grid--compact .span-2 { grid-column: span 2; }
.metadata-grid--compact .span-3 { grid-column: span 3; }

.metadata-grid--compact .label {
  margin-bottom: 0.32rem;
  font-size: 0.84rem;
}

.metadata-grid--compact .select select {
  min-height: 2.4em;
  height: 2.4em;
  font-size: 0.92rem;
}

.metadata-field.is-confirmed > .label::after {
  content: "\2713";
  display: inline-grid;
  place-items: center;
  width: 17px;
  height: 17px;
  margin-left: 0.4rem;
  border-radius: 50%;
  color: #fff;
  background: #137a45;
  font-size: 0.68rem;
  line-height: 1;
}

.suggestion-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.32rem;
  min-height: 36px;
  margin-top: 0.32rem;
}

.suggestion-chip,
.topic-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  min-height: 36px;
  padding: 0.36rem 0.58rem;
  border: 1px solid var(--lumen-border);
  border-radius: 999px;
  color: var(--lumen-text);
  background: var(--lumen-surface-raised);
  font-size: 0.79rem;
  cursor: pointer;
}

.suggestion-chip:hover,
.topic-chip:hover {
  border-color: var(--lumen-blue);
  color: var(--lumen-blue);
}

.suggestion-chip.is-selected,
.topic-chip.is-selected {
  border-color: var(--lumen-blue);
  color: #fff;
  background: var(--lumen-blue);
}

.suggestion-score {
  color: var(--lumen-blue);
  font-size: 0.76rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.suggestion-chip.is-selected .suggestion-score { color: inherit; }

.confidence-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #d92d20;
}

.confidence-dot.is-medium { background: #f79009; }
.confidence-dot.is-high { background: #12b76a; }

.suggestion-empty {
  color: var(--lumen-muted);
  font-size: 0.82rem;
}

.selected-topics {
  display: flex;
  flex-wrap: wrap;
  gap: 0.32rem;
  margin-bottom: 0.35rem;
}

.selected-topics:empty::after {
  content: "Todavía no elegiste temas";
  color: var(--lumen-muted);
  font-size: 0.85rem;
}

.other-topics {
  margin-top: 0.45rem;
  border-top: 1px solid var(--lumen-border);
  padding-top: 0.45rem;
}

.other-topics summary {
  color: var(--lumen-blue);
  font-weight: 700;
  cursor: pointer;
}

.other-topics-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.35rem;
  margin-top: 0.5rem;
}

.other-topic-button {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  width: 100%;
  padding: 0.48rem 0.58rem;
  border: 1px solid var(--lumen-border);
  border-radius: 10px;
  color: var(--lumen-text);
  text-align: left;
  background: var(--lumen-surface-raised);
  cursor: pointer;
}

.optional-fields {
  grid-column: 1 / -1;
  border-top: 1px solid var(--lumen-border);
  padding-top: 0.55rem;
}

.optional-fields summary {
  color: var(--lumen-blue);
  font-weight: 700;
  cursor: pointer;
}

.optional-hint {
  color: var(--lumen-muted);
  font-weight: 500;
}

.optional-field-body {
  max-width: calc(50% - 0.375rem);
  margin-top: 0.6rem;
}

.sticky-submit {
  position: sticky;
  bottom: 0.75rem;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.65rem 0.75rem;
  border: 1px solid var(--lumen-border);
  border-radius: 16px;
  background: color-mix(in srgb, var(--lumen-surface) 92%, transparent);
  backdrop-filter: blur(14px);
  box-shadow: var(--lumen-shadow);
}

.sticky-submit .button { min-width: 180px; }

@media (max-width: 900px) {
  .metadata-grid--compact {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    grid-auto-flow: dense;
  }
  .metadata-grid--compact .subject-field,
  .metadata-grid--compact .professor-field { grid-column: span 1; }
  .metadata-grid--compact .span-3 { grid-column: span 2; }
  .other-topics-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .optional-field-body { max-width: 100%; }
}

@media (max-width: 680px) {
  .lumen-app-bar__inner,
  .lumen-page { width: min(100% - 1rem, 920px); }
  .lumen-nav-actions .nav-label { display: none; }
  .upload-intro--compact { display: block; }
  .upload-intro--compact .subtitle {
    max-width: none;
    margin-top: 0.3rem;
    text-align: left;
  }
  .capture-card { grid-template-columns: 1fr; }
  .capture-card .flow-heading { margin-bottom: 0.1rem; }
  .capture-feedback {
    grid-column: 1;
    grid-template-columns: 1fr;
  }
  .metadata-grid,
  .metadata-grid--compact { grid-template-columns: 1fr; }
  .metadata-grid--compact .span-2,
  .metadata-grid--compact .span-3,
  .metadata-grid--compact .professor-field,
  .metadata-field.is-wide,
  .optional-fields { grid-column: auto; }
  .suggestion-chip,
  .topic-chip,
  .other-topic-button { min-height: 40px; }
  .metadata-grid--compact .select select {
    min-height: 2.7em;
    height: 2.7em;
  }
  .other-topics-list { grid-template-columns: 1fr; }
  .context-card,
  .sticky-submit { align-items: stretch; flex-direction: column; }
  .sticky-submit .button { width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}