:root {
  --cos-primary: #2563eb;
  --cos-primary-dark: #1d4ed8;
  --cos-primary-soft: #eaf2ff;
  --cos-cyan: #0891b2;
  --cos-navy: #172554;
  --cos-ink: #172033;
  --cos-muted: #64748b;
  --cos-line: #dce4ef;
  --cos-surface: #ffffff;
  --cos-surface-soft: #f5f8fc;
  --cos-success: #0f9f6e;
  --cos-danger: #dc3545;
  --cos-radius-sm: 10px;
  --cos-radius: 18px;
  --cos-shadow-sm: 0 8px 24px rgba(23, 37, 84, 0.08);
  --cos-shadow: 0 20px 50px rgba(23, 37, 84, 0.12);
}

/* Result detail, calculation manual and comparison pages */
.result-detail,
#result-visualizations,
.manual-section {
  scroll-margin-top: 96px;
}

.result-detail {
  width: min(1100px, calc(100% - 2rem));
  margin: 2rem auto 0;
}

.result-detail-heading,
.comparison-hero,
.comparison-card-heading,
.manual-section-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.result-detail-heading {
  margin-bottom: 0.75rem;
  padding: 1.25rem 1.4rem;
  background: linear-gradient(135deg, #eef5ff, #fff);
  border: 1px solid #d9e6f7;
  border-radius: 18px;
}

.result-detail-heading h2,
.comparison-hero h1,
.comparison-card-heading h2,
.manual-section-heading h2,
.parameter-section h2 {
  margin: 0;
  color: var(--cos-navy);
  font-weight: 750;
}

.result-detail .result-card,
.comparison-page .comparison-card {
  width: 100%;
  max-width: none;
  margin: 1rem 0;
}

.result-input-card {
  background: #fbfdff;
}

.result-input-card .card-body > p:last-child,
.result-explanation-card > p:last-child {
  margin-bottom: 0;
}

.result-parameters-card,
.result-visualizations-card {
  box-shadow: 0 16px 38px rgba(30, 64, 175, 0.09);
}

.result-parameters-card .table thead th,
.comparison-table thead th {
  color: var(--cos-navy);
  background: #eef4fb;
  border-bottom-color: #d7e2ef;
}

.result-parameters-card .table tbody tr:last-child td {
  border-bottom: 0;
}

.result-explanation-card {
  background: #fbfcfe;
  box-shadow: none;
}

.manual-page {
  padding-bottom: 3rem;
}

.manual-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(300px, 0.8fr);
  gap: clamp(1.5rem, 4vw, 4rem);
  align-items: center;
  margin-bottom: 1.5rem;
  padding: clamp(1.75rem, 4vw, 3.5rem);
  color: #fff;
  background: linear-gradient(135deg, #102a5c 0%, #194a9a 62%, #2f73df 100%);
  border-radius: 28px;
  box-shadow: 0 22px 54px rgba(15, 42, 92, 0.2);
}

.manual-hero h1 {
  margin: 0 0 0.8rem;
  color: #fff;
  font-size: clamp(2.25rem, 5vw, 4rem);
  letter-spacing: -0.04em;
}

.manual-hero p:not(.eyebrow) {
  max-width: 700px;
  color: rgba(255, 255, 255, 0.82);
  font-size: 1.08rem;
}

.manual-hero .eyebrow {
  color: #bcd6ff;
}

.manual-hero .btn-outline-secondary {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.55);
}

.manual-hero .btn-outline-secondary:hover {
  color: var(--cos-navy);
  background: #fff;
}

.manual-hero-equation {
  padding: 1.5rem;
  color: var(--cos-navy);
  background: rgba(255, 255, 255, 0.96);
  border: 1px solid rgba(255, 255, 255, 0.75);
  border-radius: 20px;
  box-shadow: 0 16px 35px rgba(7, 24, 55, 0.2);
}

.manual-hero-equation > span,
.formula-grid article > span,
.formula-derivations span {
  display: block;
  margin-bottom: 0.55rem;
  color: #64748b;
  font-size: 0.76rem;
  font-weight: 750;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.manual-hero-equation strong {
  display: block;
  margin-bottom: 1rem;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: clamp(1rem, 2vw, 1.2rem);
}

.manual-hero-equation div {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem 0.8rem;
  color: #64748b;
  font-size: 0.88rem;
}

.manual-hero-equation small {
  color: var(--cos-primary);
  font-weight: 800;
}

.manual-layout {
  display: grid;
  grid-template-columns: 235px minmax(0, 1fr);
  gap: 1.5rem;
  align-items: start;
}

.manual-toc {
  position: sticky;
  top: 92px;
  padding: 1.25rem;
  background: #fff;
  border: 1px solid var(--cos-line);
  border-radius: 18px;
  box-shadow: var(--cos-shadow-sm);
}

.manual-toc > p {
  margin: 0 0 0.8rem;
  color: var(--cos-navy);
  font-weight: 750;
}

.manual-toc nav {
  display: grid;
  gap: 0.15rem;
}

.manual-toc a {
  padding: 0.45rem 0.6rem;
  color: #526078;
  border-radius: 9px;
  text-decoration: none;
}

.manual-toc a:hover,
.manual-toc a:focus-visible {
  color: var(--cos-primary-dark);
  background: #edf4ff;
}

.manual-content {
  min-width: 0;
}

.manual-section {
  margin-bottom: 1rem;
  padding: clamp(1.35rem, 3vw, 2rem);
  background: #fff;
  border: 1px solid var(--cos-line);
  border-radius: 22px;
  box-shadow: var(--cos-shadow-sm);
}

.manual-section-heading {
  justify-content: flex-start;
  margin-bottom: 1.25rem;
}

.manual-section-heading > span,
.comparison-card-heading > span {
  display: grid;
  width: 46px;
  height: 46px;
  flex: 0 0 46px;
  place-items: center;
  color: var(--cos-primary);
  background: #edf4ff;
  border-radius: 14px;
  font-size: 1.2rem;
}

.formula-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  margin: 1.25rem 0;
}

.formula-grid article,
.formula-derivations > div {
  padding: 1.15rem;
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: 15px;
}

.formula-grid code,
.formula-derivations code {
  display: block;
  margin-bottom: 0.75rem;
  color: #164996;
  font-size: 0.98rem;
  white-space: normal;
}

.formula-grid p {
  margin-bottom: 0;
  color: #526078;
}

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

.formula-derivations code {
  margin: 0;
}

.manual-note,
.manual-caution {
  margin: 1.25rem 0 0;
  padding: 1rem 1.1rem;
  border-radius: 13px;
}

.manual-note {
  display: flex;
  gap: 0.7rem;
  color: #31527d;
  background: #eef6ff;
}

.manual-caution {
  color: #31527d;
  background: #eef6ff;
  border: 1px solid #cfe3f8;
}

.manual-caution p {
  margin: 0.35rem 0 0;
}

.parameter-section {
  display: grid;
  grid-template-columns: 62px minmax(0, 1fr);
  gap: 1rem;
}

.parameter-number {
  display: grid;
  width: 54px;
  height: 54px;
  place-items: center;
  color: var(--cos-primary-dark);
  background: #edf4ff;
  border-radius: 16px;
  font-weight: 800;
}

.parameter-section h2 {
  margin-bottom: 0.75rem;
  font-size: clamp(1.25rem, 2.4vw, 1.6rem);
}

.parameter-section pre {
  margin: 1rem 0;
  padding: 0.9rem 1rem;
  overflow-x: auto;
  color: #17345f;
  background: #f4f7fb;
  border: 1px solid #e0e7f0;
  border-radius: 12px;
}

.parameter-section pre code {
  color: inherit;
  white-space: pre-wrap;
}

.comparison-page {
  padding-bottom: 3rem;
}

.comparison-hero {
  margin: 0 auto 1.25rem;
  padding: clamp(1.4rem, 3vw, 2.25rem);
  background: linear-gradient(135deg, #eef5ff, #fff);
  border: 1px solid #d9e6f7;
  border-radius: 22px;
}

.comparison-hero h1 {
  margin-bottom: 0.45rem;
  font-size: clamp(1.8rem, 4vw, 2.7rem);
}

.comparison-hero p:last-child {
  max-width: 720px;
  margin-bottom: 0;
  color: #60708a;
}

.comparison-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  justify-content: flex-end;
}

.comparison-card-heading {
  margin-bottom: 1.25rem;
}

.comparison-card-heading .eyebrow {
  margin-bottom: 0.15rem;
}

.comparison-table {
  min-width: 720px;
}

@media (max-width: 991.98px) {
  .manual-hero {
    grid-template-columns: 1fr;
  }

  .manual-layout {
    grid-template-columns: 1fr;
  }

  .manual-toc {
    position: static;
  }

  .manual-toc nav {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .comparison-hero-actions {
    justify-content: flex-start;
  }
}

@media (max-width: 575.98px) {
  .result-detail {
    width: calc(100% - 1rem);
  }

  .result-detail-heading,
  .comparison-card-heading {
    align-items: flex-start;
    flex-direction: column;
  }

  .result-detail-heading .btn,
  .comparison-hero-actions,
  .comparison-hero-actions .btn {
    width: 100%;
  }

  .manual-hero {
    padding: 1.4rem;
    border-radius: 20px;
  }

  .manual-hero-equation {
    padding: 1.1rem;
  }

  .manual-toc nav,
  .formula-grid,
  .formula-derivations {
    grid-template-columns: 1fr;
  }

  .manual-section {
    padding: 1.15rem;
    border-radius: 17px;
  }

  .parameter-section {
    grid-template-columns: 1fr;
  }

  .parameter-number {
    width: 46px;
    height: 46px;
  }
}

html {
  min-height: 100%;
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  margin: 0;
  padding-top: 82px;
  color: var(--cos-ink);
  background:
    radial-gradient(circle at 8% 0%, rgba(37, 99, 235, 0.1), transparent 28rem),
    radial-gradient(circle at 94% 18%, rgba(8, 145, 178, 0.06), transparent 24rem),
    var(--cos-surface-soft);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--cos-primary-dark);
  text-underline-offset: 0.18em;
}

a:hover {
  color: var(--cos-navy);
}

code {
  color: #be185d;
}

textarea {
  resize: vertical;
}

.fixed-top-bar {
  min-height: 72px;
  background: rgba(255, 255, 255, 0.94);
  border-bottom: 1px solid rgba(220, 228, 239, 0.9);
  box-shadow: 0 6px 24px rgba(23, 37, 84, 0.06);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  z-index: 1030;
}

.navbar-brand {
  color: var(--cos-navy);
  letter-spacing: -0.03em;
}

.brand-mark {
  display: inline-grid;
  width: 42px;
  height: 42px;
  margin-right: 0.65rem;
  place-items: center;
  background: linear-gradient(145deg, #eff6ff, #dbeafe);
  border: 1px solid rgba(37, 99, 235, 0.14);
  border-radius: 13px;
  box-shadow: 0 6px 16px rgba(37, 99, 235, 0.12);
}

.brand-mark img {
  display: block;
  border-radius: 50%;
}

.brand-name {
  font-size: 1.08rem;
  font-weight: 800;
}

.brand-name > span {
  color: var(--cos-primary-dark);
}

.navbar-brand:hover {
  color: var(--cos-primary-dark);
}

.fixed-top-bar .nav-link {
  padding: 0.5rem 0.75rem !important;
  color: #475569;
  border-radius: 9px;
  font-size: 0.94rem;
  font-weight: 650;
}

.fixed-top-bar .nav-link:hover,
.fixed-top-bar .nav-link.active {
  color: var(--cos-primary-dark);
  background: #edf4ff;
}

.navbar-user {
  max-width: 220px;
}

.nav-login-link {
  color: #475569;
  text-decoration: none;
}

.nav-login-link:hover {
  color: var(--cos-primary-dark);
}

.site-page > main {
  width: 100%;
}

.cosinor-container {
  width: calc(100% - 2rem);
  max-width: 1100px;
  margin: 1.25rem auto;
  padding: clamp(1.25rem, 2.5vw, 2rem);
  background: var(--cos-surface);
  border: 1px solid rgba(220, 228, 239, 0.9);
  border-radius: var(--cos-radius);
  box-shadow: var(--cos-shadow-sm);
}

.cosinor-container > .card {
  border: 0;
  box-shadow: none !important;
}

.section-header {
  display: flex;
  align-items: center;
  min-height: 48px;
  margin: 0 0 1.25rem;
  padding: 0.75rem 1rem;
  color: var(--cos-navy);
  background: linear-gradient(90deg, #edf4ff, #f8fafc);
  border: 0;
  border-left: 4px solid var(--cos-primary);
  border-radius: var(--cos-radius-sm);
  font-size: clamp(1rem, 2vw, 1.12rem);
  font-weight: 700;
}

.section-title {
  margin-bottom: 1rem;
  padding-bottom: 0.6rem;
  color: var(--cos-navy);
  border-bottom: 1px solid var(--cos-line);
  font-size: 1.2rem;
  font-weight: 700;
}

.section-subheader {
  color: var(--cos-navy);
  font-weight: 700;
}

.form-label {
  color: #334155;
  font-weight: 650;
}

.form-control,
.form-select {
  min-height: 46px;
  border-color: #cbd5e1;
  border-radius: 11px;
  box-shadow: none;
}

textarea.form-control {
  min-height: auto;
}

.form-control:focus,
.form-select:focus {
  border-color: var(--cos-primary);
  box-shadow: 0 0 0 0.22rem rgba(37, 99, 235, 0.14);
}

.btn {
  border-radius: 10px;
  font-weight: 650;
}

.btn-primary {
  background: var(--cos-primary);
  border-color: var(--cos-primary);
}

.btn-primary:hover,
.btn-primary:focus {
  background: var(--cos-primary-dark);
  border-color: var(--cos-primary-dark);
}

.btn-lg {
  min-height: 50px;
  padding: 0.72rem 1.25rem;
}

/* New analysis landing page */
.analysis-hero {
  position: relative;
  padding: clamp(3rem, 7vw, 6.25rem) 1rem clamp(3.25rem, 7vw, 5.75rem);
  overflow: hidden;
  background:
    radial-gradient(circle at 80% 20%, rgba(14, 165, 233, 0.14), transparent 25rem),
    linear-gradient(135deg, #f8fbff 0%, #edf4ff 54%, #f6fbff 100%);
  border-bottom: 1px solid rgba(203, 213, 225, 0.8);
}

.analysis-hero::before {
  position: absolute;
  top: -9rem;
  left: -7rem;
  width: 25rem;
  height: 25rem;
  content: "";
  background: rgba(37, 99, 235, 0.06);
  border-radius: 50%;
  filter: blur(1px);
}

.analysis-hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(420px, 0.95fr);
  gap: clamp(2.25rem, 6vw, 5.5rem);
  align-items: center;
}

.eyebrow {
  display: flex;
  margin: 0 0 0.85rem;
  align-items: center;
  gap: 0.5rem;
  color: var(--cos-primary-dark);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.analysis-hero-copy h1 {
  max-width: 760px;
  margin: 0;
  color: #10204a;
  font-size: clamp(2.55rem, 5.4vw, 4.75rem);
  font-weight: 820;
  letter-spacing: -0.06em;
  line-height: 1.01;
}

.analysis-hero-lead {
  max-width: 680px;
  margin: 1.5rem 0 0;
  color: #4a5a73;
  font-size: clamp(1.05rem, 1.7vw, 1.22rem);
  line-height: 1.7;
}

.analysis-hero-actions {
  display: flex;
  margin-top: 2rem;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.analysis-hero-actions .btn-primary {
  box-shadow: 0 12px 26px rgba(37, 99, 235, 0.22);
}

.trust-row {
  display: flex;
  margin-top: 1.55rem;
  flex-wrap: wrap;
  gap: 0.65rem 1.2rem;
  color: #526078;
  font-size: 0.9rem;
  font-weight: 650;
}

.trust-row i {
  margin-right: 0.28rem;
  color: var(--cos-success);
}

.model-card {
  position: relative;
  padding: 1.25rem;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid rgba(148, 163, 184, 0.32);
  border-radius: 26px;
  box-shadow: 0 30px 70px rgba(30, 64, 175, 0.16);
  backdrop-filter: blur(12px);
}

.model-card::after {
  position: absolute;
  right: -4rem;
  bottom: -5rem;
  width: 12rem;
  height: 12rem;
  content: "";
  background: rgba(14, 165, 233, 0.08);
  border-radius: 50%;
}

.model-card-topline {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  color: #475569;
  font-size: 0.78rem;
  font-weight: 750;
}

.status-pill {
  display: inline-flex;
  padding: 0.3rem 0.58rem;
  align-items: center;
  gap: 0.38rem;
  color: #047857;
  background: #ecfdf5;
  border: 1px solid #a7f3d0;
  border-radius: 999px;
  font-size: 0.7rem;
}

.status-pill > span {
  width: 7px;
  height: 7px;
  background: #10b981;
  border-radius: 50%;
}

.model-wave {
  margin: 0.7rem 0 0.35rem;
}

.model-wave svg {
  display: block;
  width: 100%;
  height: auto;
  overflow: visible;
}

.model-wave .wave-grid {
  fill: none;
  stroke: #dbe6f3;
  stroke-width: 1;
}

.model-wave .wave-area {
  fill: url(#waveFill);
}

.model-wave .wave-line {
  fill: none;
  stroke: var(--cos-primary);
  stroke-linecap: round;
  stroke-width: 4;
}

.model-wave circle {
  fill: #fff;
  stroke: var(--cos-cyan);
  stroke-width: 4;
}

.model-equation {
  position: relative;
  padding: 0.85rem 1rem;
  color: #1e3a8a;
  background: #eff6ff;
  border: 1px solid #dbeafe;
  border-radius: 12px;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: clamp(0.82rem, 1.4vw, 0.94rem);
  font-weight: 650;
  text-align: center;
}

.model-metrics {
  position: relative;
  display: grid;
  margin-top: 1rem;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.5rem;
}

.model-metrics span {
  color: var(--cos-muted);
  font-size: 0.66rem;
  text-align: center;
}

.model-metrics strong {
  display: block;
  margin-bottom: 0.2rem;
  color: var(--cos-navy);
  font-size: 1rem;
}

.capability-strip {
  padding: 0 1rem;
  background: #fff;
  border-bottom: 1px solid var(--cos-line);
}

.capability-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
}

.capability-grid article {
  display: flex;
  min-height: 142px;
  padding: 1.75rem clamp(1rem, 2.5vw, 2rem);
  align-items: center;
  gap: 1rem;
  border-right: 1px solid var(--cos-line);
}

.capability-grid article:first-child {
  border-left: 1px solid var(--cos-line);
}

.capability-icon {
  display: inline-grid;
  flex: 0 0 46px;
  width: 46px;
  height: 46px;
  color: var(--cos-primary-dark);
  font-size: 1.2rem;
  place-items: center;
  background: var(--cos-primary-soft);
  border-radius: 14px;
}

.capability-grid h2 {
  margin: 0 0 0.28rem;
  color: var(--cos-navy);
  font-size: 0.98rem;
  font-weight: 750;
}

.capability-grid p {
  margin: 0;
  color: var(--cos-muted);
  font-size: 0.83rem;
  line-height: 1.5;
}

.analysis-workspace {
  margin-top: clamp(2.5rem, 6vw, 5rem);
  margin-bottom: 2rem;
  padding: clamp(1.35rem, 4vw, 3rem);
  background: #fff;
  border: 1px solid rgba(203, 213, 225, 0.85);
  border-radius: 24px;
  box-shadow: var(--cos-shadow-sm);
  scroll-margin-top: 96px;
}

.workspace-heading {
  display: flex;
  margin-bottom: 2rem;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1.5rem;
}

.workspace-heading h2 {
  margin: 0;
  color: var(--cos-navy);
  font-size: clamp(1.65rem, 3vw, 2.25rem);
  font-weight: 800;
  letter-spacing: -0.035em;
}

.workspace-heading p:not(.eyebrow) {
  margin: 0.55rem 0 0;
  color: var(--cos-muted);
}

.workspace-step {
  display: inline-flex;
  flex: 0 0 auto;
  padding: 0.48rem 0.75rem;
  align-items: center;
  gap: 0.5rem;
  color: #475569;
  background: #f8fafc;
  border: 1px solid var(--cos-line);
  border-radius: 999px;
  font-size: 0.76rem;
  font-weight: 700;
}

.workspace-step strong,
.field-number {
  display: inline-grid;
  width: 24px;
  height: 24px;
  color: #fff;
  place-items: center;
  background: var(--cos-primary);
  border-radius: 50%;
  font-size: 0.72rem;
}

.field-unit,
.field-optional {
  margin-left: 0.32rem;
  padding: 0.14rem 0.38rem;
  color: #64748b;
  background: #f1f5f9;
  border-radius: 5px;
  font-size: 0.67rem;
  font-weight: 700;
  text-transform: uppercase;
}

.analysis-form .form-text {
  margin-top: 0.45rem;
  color: #718096;
  font-size: 0.77rem;
}

.data-entry-header {
  display: flex;
  margin: 0 -0.15rem 0.9rem;
  align-items: end;
  justify-content: space-between;
  gap: 1rem;
}

.data-entry-header h3 {
  margin: 0;
  color: #253553;
  font-size: 1rem;
  font-weight: 750;
}

.data-entry-header p {
  margin: 0.3rem 0 0;
  color: var(--cos-muted);
  font-size: 0.82rem;
}

.data-entry-header > span {
  color: #526078;
  font-size: 0.76rem;
  font-weight: 650;
}

.data-entry-header > span i {
  margin-right: 0.3rem;
  color: var(--cos-primary);
}

.data-field-card {
  height: 100%;
  padding: 1rem;
  background: #f8fafc;
  border: 1px solid #dbe3ee;
  border-radius: 16px;
}

.data-field-card .form-label {
  display: inline-flex;
  margin-bottom: 0.7rem;
  align-items: center;
  gap: 0.5rem;
}

.data-field-hint {
  float: right;
  margin-top: 0.27rem;
  color: var(--cos-muted);
  font-size: 0.72rem;
}

.data-textarea {
  min-height: 250px !important;
  background: #fff;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 0.9rem;
  line-height: 1.65;
}

.input-guidance {
  display: flex;
  padding: 0.85rem 1rem;
  align-items: flex-start;
  gap: 0.8rem;
  color: #624b12;
  background: #fffbeb;
  border: 1px solid #fde68a;
  border-radius: 12px;
}

.input-guidance > i {
  color: #d97706;
  font-size: 1.05rem;
}

.input-guidance strong,
.input-guidance span {
  display: block;
}

.input-guidance strong {
  margin-bottom: 0.1rem;
  font-size: 0.82rem;
}

.input-guidance span {
  font-size: 0.78rem;
  line-height: 1.5;
}

.analysis-submit-row {
  display: flex;
  margin-top: 1.4rem;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
}

.submit-note {
  display: flex;
  max-width: 620px;
  align-items: flex-start;
  gap: 0.55rem;
  color: var(--cos-muted);
  font-size: 0.8rem;
  line-height: 1.5;
}

.submit-note i {
  color: var(--cos-success);
}

.analysis-submit-row .btn {
  flex: 0 0 auto;
  min-width: 205px;
  box-shadow: 0 10px 24px rgba(37, 99, 235, 0.18);
}

.account-callout {
  display: flex;
  margin-top: 1.25rem;
  margin-bottom: 3rem;
  padding: 1.3rem 1.5rem;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  background: linear-gradient(105deg, #eff6ff, #f8fbff);
  border: 1px solid #bfdbfe;
  border-radius: 18px;
}

.account-callout > div {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.account-callout-icon {
  display: inline-grid;
  flex: 0 0 44px;
  width: 44px;
  height: 44px;
  color: var(--cos-primary-dark);
  place-items: center;
  background: #fff;
  border-radius: 13px;
  box-shadow: 0 6px 16px rgba(37, 99, 235, 0.1);
}

.account-callout h2 {
  margin: 0;
  color: var(--cos-navy);
  font-size: 1rem;
  font-weight: 750;
}

.account-callout p {
  margin: 0.25rem 0 0;
  color: var(--cos-muted);
  font-size: 0.82rem;
}

.alert {
  border: 0;
  border-radius: 12px;
}

.table {
  --bs-table-bg: transparent;
  vertical-align: middle;
}

.table thead th {
  color: #334155;
  background: #f1f5f9;
  border-bottom-color: var(--cos-line);
  white-space: nowrap;
}

.example-box,
.text-muted {
  color: var(--cos-muted) !important;
}

.custom-quote {
  padding: 1rem 1.25rem;
  background: #f8fafc;
  border-left: 4px solid var(--cos-primary);
  border-radius: var(--cos-radius-sm);
  font-style: italic;
}

.wrap-long-text {
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.modal {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 1050;
  width: 100%;
  height: 100%;
  overflow: auto;
  padding: 1rem;
  background: rgba(15, 23, 42, 0.62);
  backdrop-filter: blur(4px);
}

.modal.is-open {
  display: block;
}

.login-required-modal.is-open {
  display: flex;
}

.modal-content {
  position: relative;
  width: min(100%, 520px);
  margin: 8vh auto;
  padding: 2rem;
  background: var(--cos-surface);
  border: 0;
  border-radius: var(--cos-radius);
  box-shadow: var(--cos-shadow);
}

.center-modal {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.image-modal-content {
  width: min(95%, 1000px);
  max-height: 90vh;
  overflow: auto;
  padding: 1.5rem;
}

.feature-preview {
  width: 100%;
  max-width: 250px;
  cursor: pointer;
}

.image-modal-content img {
  width: 100%;
  height: auto;
}

.image-modal-content img {
  border-radius: 0;
}

.plot-container {
  width: 100%;
  height: clamp(460px, 42vw, 560px);
  margin-inline: auto;
}

#cosinorPlot,
#periodogramPlot {
  max-width: 1280px;
}

#polarPlot {
  width: min(100%, 700px);
  height: clamp(500px, 60vw, 650px);
}

.results-table {
  min-width: 800px;
}

.account-accordion-button {
  gap: 0.5rem;
}

.login-required-modal {
  align-items: center;
  justify-content: center;
}

.login-required-modal .modal-content {
  width: min(90%, 400px);
  margin: auto;
}

#feedbackButton {
  display: inline-flex;
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 1050;
  min-height: 46px;
  padding: 10px 17px;
  align-items: center;
  gap: 0.55rem;
  color: #fff;
  font-size: 0.9rem;
  font-weight: 700;
  background: var(--cos-navy);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 999px;
  box-shadow: 0 12px 30px rgba(15, 23, 42, 0.24);
  transition: transform 0.2s ease, background 0.2s ease;
}

#feedbackButton:hover,
#feedbackButton:focus-visible {
  color: #fff;
  background: var(--cos-primary-dark);
  transform: translateY(-2px);
}

#feedbackModal {
  display: none;
  position: fixed;
  right: 20px;
  bottom: 82px;
  z-index: 1051;
  width: min(520px, calc(100vw - 40px));
  overflow: hidden;
  background: #fff;
  border: 1px solid rgba(203, 213, 225, 0.9);
  border-radius: 20px;
  box-shadow: 0 24px 70px rgba(15, 23, 42, 0.25);
}

#feedbackModal.is-open {
  display: block;
}

.feedback-header {
  display: flex;
  padding: 1.2rem 1.25rem;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  color: #fff;
  background: linear-gradient(135deg, var(--cos-navy), #1d4ed8);
}

.feedback-heading {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.feedback-icon {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  color: #dbeafe;
  font-size: 1.15rem;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 13px;
}

.feedback-heading p {
  margin: 0 0 0.15rem;
  color: #bfdbfe;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.feedback-heading h2 {
  margin: 0;
  font-size: 1.25rem;
  font-weight: 800;
}

.feedback-close {
  display: grid;
  width: 36px;
  height: 36px;
  place-items: center;
  color: #fff;
  background: rgba(255, 255, 255, 0.1);
  border: 0;
  border-radius: 10px;
}

#feedbackForm {
  padding: 1.25rem;
}

.feedback-invitation {
  margin: 0 0 1rem;
  color: var(--cos-muted);
  font-size: 0.9rem;
  line-height: 1.55;
}

#feedbackForm .form-label,
.settings-form .form-label {
  display: block;
  text-align: left;
}

.feedback-status {
  display: none;
  margin-top: 1rem;
  padding: 0.75rem 0.9rem;
  border-radius: 10px;
  font-size: 0.9rem;
}

.feedback-status.is-error,
.feedback-status.is-success {
  display: block;
}

.feedback-status.is-error {
  color: #991b1b;
  background: #fef2f2;
  border: 1px solid #fecaca;
}

.feedback-status.is-success {
  color: #166534;
  background: #f0fdf4;
  border: 1px solid #bbf7d0;
}

.feedback-actions {
  display: flex;
  margin-top: 1.25rem;
  align-items: center;
  justify-content: flex-end;
  gap: 0.6rem;
}

.close-button {
  position: absolute;
  top: 0.55rem;
  right: 0.85rem;
  color: #475569;
  font-size: 1.65rem;
  line-height: 1;
  background: transparent;
  border: 0;
  cursor: pointer;
}

footer.donation {
  margin-top: 2.5rem;
  padding: 2.5rem 1rem;
  color: #334155;
  text-align: center;
  background: #e8f0fa;
  border-top: 1px solid #d5e0ee;
}

footer.donation img {
  max-width: 220px;
}

.support-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 1.5rem;
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid rgba(148, 163, 184, 0.35);
  border-radius: var(--cos-radius);
}

.support-card-copy {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}

.support-card-icon {
  display: inline-grid;
  flex: 0 0 44px;
  width: 44px;
  height: 44px;
  color: #be123c;
  font-size: 1.25rem;
  place-items: center;
  background: #fff1f2;
  border-radius: 50%;
}

.support-card-button {
  margin: 0.35rem 0 0.65rem;
}

.support-card-note {
  color: var(--cos-muted);
  font-size: 0.78rem;
  line-height: 1.45;
}

.support-card-qr {
  display: block;
  flex: 0 0 auto;
  padding: 0.45rem;
  background: #fff;
  border: 1px solid var(--cos-line);
  border-radius: 14px;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.support-card-qr:hover,
.support-card-qr:focus-visible {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(15, 23, 42, 0.12);
}

.support-card-qr img {
  display: block;
  width: 132px;
  height: 132px;
}

/* Shared content pages */
.content-page,
.account-page {
  padding: clamp(2rem, 5vw, 4.5rem) 1rem 1rem;
}

.content-hero {
  display: grid;
  padding: clamp(1.5rem, 4vw, 3.5rem);
  grid-template-columns: minmax(0, 1.25fr) minmax(320px, 0.75fr);
  align-items: center;
  gap: clamp(2rem, 5vw, 5rem);
  color: #fff;
  background:
    radial-gradient(circle at 90% 10%, rgba(96, 165, 250, 0.34), transparent 18rem),
    linear-gradient(135deg, #0f2856, #173f87);
  border-radius: 28px;
  box-shadow: var(--cos-shadow);
}

.content-hero .eyebrow {
  color: #bfdbfe;
}

.content-hero h1 {
  max-width: 720px;
  margin: 0 0 1rem;
  font-size: clamp(2.1rem, 5vw, 4rem);
  font-weight: 850;
  letter-spacing: -0.055em;
  line-height: 1.02;
}

.content-hero > div > p:not(.eyebrow) {
  max-width: 700px;
  margin: 0;
  color: #dbeafe;
  font-size: clamp(1rem, 2vw, 1.16rem);
  line-height: 1.7;
}

.content-hero-actions {
  display: flex;
  margin-top: 1.5rem;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.content-hero .btn-outline-secondary {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.55);
}

.content-hero .btn-outline-secondary:hover {
  color: var(--cos-navy);
  background: #fff;
}

.about-equation-card {
  padding: 1.5rem;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 20px;
  backdrop-filter: blur(8px);
}

.about-equation-card span {
  display: block;
  margin-bottom: 0.75rem;
  color: #bfdbfe;
  font-size: 0.76rem;
  font-weight: 750;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.about-equation-card strong {
  display: block;
  color: #fff;
  font-family: Georgia, serif;
  font-size: clamp(1.15rem, 2vw, 1.55rem);
  font-weight: 500;
}

.about-equation-card p {
  margin: 1rem 0 0;
  color: #dbeafe;
  line-height: 1.55;
}

.content-grid {
  display: grid;
  margin-top: 1.5rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.5rem;
}

.content-card,
.citation-card,
.account-panel,
.account-hero,
.danger-zone,
.results-hero {
  background: rgba(255, 255, 255, 0.96);
  border: 1px solid rgba(220, 228, 239, 0.95);
  border-radius: var(--cos-radius);
  box-shadow: var(--cos-shadow-sm);
}

.content-card {
  display: flex;
  padding: clamp(1.4rem, 3vw, 2.25rem);
  gap: 1rem;
}

.content-card-wide {
  grid-column: 1 / -1;
}

.content-card-icon {
  display: grid;
  width: 46px;
  height: 46px;
  flex: 0 0 46px;
  place-items: center;
  color: var(--cos-primary-dark);
  font-size: 1.15rem;
  background: #eaf2ff;
  border-radius: 14px;
}

.content-card h2,
.citation-card h2,
.account-panel h2,
.danger-zone h2,
.results-dashboard-heading h2,
.empty-results h2 {
  margin: 0 0 0.75rem;
  color: var(--cos-navy);
  font-size: clamp(1.25rem, 2vw, 1.55rem);
  font-weight: 800;
  letter-spacing: -0.025em;
}

.content-card p {
  color: #475569;
  line-height: 1.7;
}

.feature-check-list {
  display: grid;
  margin: 1rem 0 0;
  padding: 0;
  gap: 0.65rem;
  list-style: none;
}

.feature-check-list li::before {
  margin-right: 0.55rem;
  color: var(--cos-success);
  content: "✓";
  font-weight: 800;
}

.compact-definition-list {
  display: grid;
  margin: 1rem 0 0;
  gap: 0.65rem;
}

.compact-definition-list div {
  display: flex;
  padding: 0.7rem 0.8rem;
  justify-content: space-between;
  gap: 1rem;
  background: #f8fafc;
  border-radius: 10px;
}

.compact-definition-list dt {
  color: var(--cos-navy);
}

.compact-definition-list dd {
  margin: 0;
  color: var(--cos-muted);
  text-align: right;
}

.citation-card {
  display: flex;
  margin-top: 1.5rem;
  padding: clamp(1.4rem, 3vw, 2.25rem);
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.citation-copy {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}

.citation-copy p {
  color: #475569;
}

.citation-copy blockquote {
  margin: 1rem 0 0;
  padding-left: 1rem;
  color: #334155;
  border-left: 3px solid #bfdbfe;
}

/* Results library */
.results-hero {
  display: flex;
  margin: 0.75rem 0 1.5rem;
  padding: clamp(1.4rem, 3vw, 2rem);
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.results-hero h1 {
  margin: 0;
  color: var(--cos-navy);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 850;
  letter-spacing: -0.05em;
}

.results-hero p:not(.eyebrow) {
  margin: 0.45rem 0 0;
  color: var(--cos-muted);
}

.results-workspace-nav {
  display: flex;
  margin: -0.5rem 0 1.5rem;
  padding: 0.35rem;
  gap: 0.35rem;
  background: #eaf0f8;
  border: 1px solid var(--cos-line);
  border-radius: 14px;
}

.results-workspace-nav a,
.results-workspace-nav span {
  display: inline-flex;
  padding: 0.65rem 1rem;
  align-items: center;
  justify-content: center;
  color: #526178;
  font-size: 0.92rem;
  font-weight: 750;
  border-radius: 10px;
  text-decoration: none;
}

.results-workspace-nav a:hover {
  color: var(--cos-primary-dark);
}

.results-workspace-nav .active {
  color: var(--cos-navy);
  background: #fff;
  box-shadow: 0 3px 10px rgba(23, 37, 84, 0.09);
}

.comparison-workspace-heading {
  display: flex;
  margin: 0 0 1rem;
  padding: 1.5rem;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  background: linear-gradient(135deg, #f5f8fc, #fff);
  border: 1px solid var(--cos-line);
  border-radius: var(--cos-radius);
}

.comparison-workspace-heading h2 {
  margin: 0;
  color: var(--cos-navy);
  font-size: clamp(1.45rem, 3vw, 2rem);
  font-weight: 800;
}

.comparison-workspace-heading p:not(.eyebrow) {
  margin: 0.4rem 0 0;
  color: var(--cos-muted);
}

.selected-dataset-chips {
  display: flex;
  margin-bottom: 1.25rem;
  flex-wrap: wrap;
  gap: 0.55rem;
}

.selected-dataset-chips span {
  display: inline-flex;
  padding: 0.45rem 0.75rem;
  align-items: center;
  color: #334155;
  font-size: 0.86rem;
  font-weight: 700;
  background: #eef5ff;
  border: 1px solid #d5e4fa;
  border-radius: 999px;
}

.comparison-empty-state {
  margin-top: 1.5rem;
}

.results-dashboard {
  max-width: none;
  width: 100%;
  margin-inline: 0;
}

.results-dashboard-heading {
  display: flex;
  margin-bottom: 1.25rem;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.results-dashboard-heading h2 {
  margin-bottom: 0;
}

.results-count {
  padding: 0.4rem 0.7rem;
  color: #475569;
  font-size: 0.84rem;
  font-weight: 700;
  background: #f1f5f9;
  border-radius: 999px;
}

.results-toolbar {
  display: flex;
  margin-bottom: 1rem;
  align-items: center;
  gap: 0.5rem;
}

.results-toolbar .form-label {
  margin: 0;
  color: #475569;
  font-size: 0.9rem;
  font-weight: 650;
}

.result-actions {
  display: flex;
  align-items: center;
  gap: 0.45rem;
}

.result-actions form {
  margin: 0;
}

.result-micro-feedback {
  position: relative;
  margin: 1.5rem 0 0;
  padding: 1.5rem;
  background: linear-gradient(135deg, #f7fbff, #fff);
  border: 1px solid #d7e5f7;
  border-radius: var(--cos-radius);
  box-shadow: var(--cos-shadow-sm);
}

.anonymous-result-claim {
  display: flex;
  margin: 1rem 0;
  padding: 1.35rem;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  background: linear-gradient(135deg, #eef7ff, #fff);
  border: 1px solid #cfe0f5;
  border-radius: var(--cos-radius);
  box-shadow: var(--cos-shadow-sm);
}

.anonymous-result-claim[hidden] {
  display: none;
}

.anonymous-result-claim-copy {
  display: flex;
  align-items: flex-start;
  gap: 0.9rem;
}

.anonymous-result-claim-icon {
  display: grid;
  width: 46px;
  height: 46px;
  flex: 0 0 46px;
  place-items: center;
  color: var(--cos-primary-dark);
  font-size: 1.1rem;
  background: #dfeeff;
  border-radius: 14px;
}

.anonymous-result-claim h2 {
  margin: 0;
  color: var(--cos-navy);
  font-size: clamp(1.25rem, 2vw, 1.55rem);
  font-weight: 800;
}

.anonymous-result-claim-copy p:last-child {
  max-width: 720px;
  margin: 0.4rem 0 0;
  color: var(--cos-muted);
}

.anonymous-result-claim-actions {
  display: flex;
  flex: 0 0 auto;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-end;
  gap: 0.5rem;
}

.anonymous-result-claim-actions form {
  margin: 0;
}

.account-retention-note {
  margin: 1rem 0 0;
  color: var(--cos-muted);
  font-size: 0.88rem;
  text-align: center;
}
.result-micro-feedback[hidden],
.result-feedback-comment[hidden],
.result-rating-options[hidden] {
  display: none !important;
}

.result-feedback-copy {
  display: flex;
  padding-right: 2rem;
  align-items: flex-start;
  gap: 0.9rem;
}

.result-feedback-icon {
  display: grid;
  width: 44px;
  height: 44px;
  flex: 0 0 44px;
  place-items: center;
  color: var(--cos-primary-dark);
  background: #e7f0ff;
  border-radius: 14px;
}

.result-feedback-copy h2 {
  margin: 0;
  color: var(--cos-navy);
  font-size: clamp(1.2rem, 2vw, 1.45rem);
  font-weight: 800;
}

.result-feedback-copy p:last-child {
  margin: 0.35rem 0 0;
  color: var(--cos-muted);
}

.result-feedback-dismiss {
  display: grid;
  position: absolute;
  top: 0.9rem;
  right: 0.9rem;
  width: 34px;
  height: 34px;
  place-items: center;
  color: #64748b;
  background: transparent;
  border: 0;
  border-radius: 9px;
}

.result-feedback-dismiss:hover {
  color: var(--cos-navy);
  background: #eef2f7;
}

.result-rating-options {
  display: flex;
  margin-top: 1.15rem;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.result-feedback-comment {
  max-width: 680px;
  margin-top: 1.15rem;
}

.result-feedback-status {
  margin-top: 1rem;
  font-size: 0.92rem;
  font-weight: 650;
}

.result-feedback-status.is-success {
  color: #166534;
}

.result-feedback-status.is-error {
  color: #991b1b;
}

.results-dashboard .results-table th {
  padding-block: 0.8rem;
  color: #475569;
  font-size: 0.78rem;
  letter-spacing: 0.025em;
  text-transform: uppercase;
  background: #f1f5f9;
  white-space: nowrap;
}

.results-dashboard .results-table td {
  padding-block: 0.72rem;
  vertical-align: middle;
}

.empty-results {
  max-width: 620px;
  margin: 2rem auto;
  padding: 3rem 1.5rem;
  text-align: center;
  background: #fff;
  border: 1px solid var(--cos-line);
  border-radius: var(--cos-radius);
  box-shadow: var(--cos-shadow-sm);
}

.empty-results > span {
  display: grid;
  width: 58px;
  height: 58px;
  margin: 0 auto 1rem;
  place-items: center;
  color: var(--cos-primary);
  font-size: 1.4rem;
  background: #eaf2ff;
  border-radius: 18px;
}

.empty-results p {
  color: var(--cos-muted);
}

/* Account area */
.account-hero {
  display: flex;
  padding: clamp(1.4rem, 3vw, 2rem);
  align-items: center;
  gap: 1.1rem;
}

.profile-avatar {
  display: grid;
  width: 66px;
  height: 66px;
  flex: 0 0 66px;
  place-items: center;
  color: #fff;
  font-size: 1.65rem;
  font-weight: 850;
  background: linear-gradient(135deg, var(--cos-primary), #0ea5e9);
  border-radius: 20px;
  box-shadow: 0 10px 24px rgba(37, 99, 235, 0.22);
}

.account-hero-copy {
  min-width: 0;
}

.account-hero-copy h1 {
  margin: 0;
  overflow: hidden;
  color: var(--cos-navy);
  font-size: clamp(1.6rem, 4vw, 2.35rem);
  font-weight: 850;
  letter-spacing: -0.04em;
  text-overflow: ellipsis;
}

.account-hero-copy > p:not(.eyebrow) {
  margin: 0.25rem 0 0;
  overflow-wrap: anywhere;
  color: var(--cos-muted);
}

.account-meta {
  display: flex;
  margin-left: auto;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.4rem;
  color: #64748b;
  font-size: 0.86rem;
}

.account-meta i {
  margin-right: 0.35rem;
  color: var(--cos-success);
}

.account-layout {
  display: grid;
  margin-top: 1.5rem;
  grid-template-columns: minmax(280px, 0.78fr) minmax(0, 1.22fr);
  align-items: start;
  gap: 1.5rem;
}

.account-panel {
  padding: clamp(1.35rem, 3vw, 2rem);
}

.panel-heading {
  display: flex;
  margin-bottom: 1.25rem;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
}

.panel-heading h2 {
  margin-bottom: 0;
}

.panel-heading > i {
  color: #94a3b8;
  font-size: 1.4rem;
}

.profile-data-list {
  display: grid;
  margin: 0;
}

.profile-data-list div {
  display: grid;
  padding: 0.8rem 0;
  grid-template-columns: minmax(110px, 0.8fr) minmax(0, 1.2fr);
  gap: 1rem;
  border-bottom: 1px solid #edf2f7;
}

.profile-data-list dt {
  color: #64748b;
  font-size: 0.84rem;
  font-weight: 650;
}

.profile-data-list dd {
  margin: 0;
  overflow-wrap: anywhere;
  color: #1e293b;
  font-weight: 650;
}

.profile-bio {
  margin-top: 1.25rem;
  padding: 1rem;
  color: #475569;
  background: #f8fafc;
  border-radius: 12px;
}

.profile-bio p {
  margin: 0.4rem 0 0;
}

.settings-accordion .accordion-item {
  overflow: hidden;
  margin-bottom: 0.75rem;
  border: 1px solid var(--cos-line);
  border-radius: 14px !important;
}

.settings-accordion .accordion-button {
  gap: 0.8rem;
  box-shadow: none;
}

.settings-accordion .accordion-button > span:last-child {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.settings-accordion .accordion-button small {
  color: var(--cos-muted);
  font-size: 0.82rem;
  font-weight: 400;
}

.setting-icon {
  display: grid;
  width: 38px;
  height: 38px;
  flex: 0 0 38px;
  place-items: center;
  color: var(--cos-primary-dark);
  background: #eaf2ff;
  border-radius: 11px;
}

.settings-form .form-control {
  min-height: 46px;
}

.settings-note {
  display: flex;
  padding: 0.8rem;
  align-items: flex-start;
  gap: 0.55rem;
  color: #475569;
  font-size: 0.88rem;
  background: #f8fafc;
  border-radius: 10px;
}

.danger-zone {
  display: flex;
  margin-top: 1.5rem;
  padding: 1.25rem 1.5rem;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  border-color: #fecaca;
}

.danger-zone > div {
  display: flex;
  align-items: center;
  gap: 0.9rem;
}

.danger-zone-icon {
  display: grid;
  width: 44px;
  height: 44px;
  flex: 0 0 44px;
  place-items: center;
  color: #b91c1c;
  background: #fef2f2;
  border-radius: 13px;
}

.danger-zone h2 {
  margin-bottom: 0.2rem;
  color: #991b1b;
  font-size: 1.05rem;
}

.danger-zone p {
  margin: 0;
  color: #64748b;
  font-size: 0.9rem;
}

/* Shared account pages */
.auth-page {
  min-height: 100vh;
  padding: clamp(1.25rem, 4vw, 3rem) 1rem;
  justify-content: center;
  background:
    radial-gradient(circle at 15% 15%, rgba(37, 99, 235, 0.2), transparent 25rem),
    radial-gradient(circle at 85% 85%, rgba(14, 165, 233, 0.12), transparent 28rem),
    #f4f7fb;
}

.auth-shell {
  width: min(100%, 480px);
  margin: auto;
}

.auth-brand {
  display: flex;
  width: max-content;
  margin: 0 auto 1.25rem;
  align-items: center;
  gap: 0.75rem;
  color: var(--cos-navy);
  font-size: 1.2rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  text-decoration: none;
}

.auth-brand img {
  border-radius: 50%;
  box-shadow: 0 6px 18px rgba(37, 99, 235, 0.22);
}

.auth-card {
  padding: clamp(1.5rem, 5vw, 2.5rem);
  background: rgba(255, 255, 255, 0.98);
  border: 1px solid rgba(220, 228, 239, 0.9);
  border-radius: 22px;
  box-shadow: var(--cos-shadow);
}

.auth-card-header {
  margin-bottom: 1.75rem;
  text-align: center;
}

.auth-card-header h1 {
  margin: 0;
  color: var(--cos-navy);
  font-size: clamp(1.75rem, 7vw, 2.25rem);
  font-weight: 800;
  letter-spacing: -0.045em;
}

.auth-card-header p:not(.auth-eyebrow) {
  margin: 0.65rem 0 0;
  color: var(--cos-muted);
  line-height: 1.55;
}

.auth-eyebrow {
  margin: 0 0 0.4rem;
  color: var(--cos-primary-dark);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.auth-card .btn[type="submit"] {
  min-height: 48px;
}

.auth-links {
  display: flex;
  margin-top: 1.25rem;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.55rem 1rem;
  color: var(--cos-muted);
  font-size: 0.94rem;
  text-align: center;
}

.auth-links a {
  font-weight: 650;
}

.auth-home-link {
  display: flex;
  width: max-content;
  margin: 1.25rem auto 0;
  align-items: center;
  gap: 0.4rem;
  color: #475569;
  font-size: 0.92rem;
  font-weight: 650;
  text-decoration: none;
}

@media (max-width: 991.98px) {
  .anonymous-result-claim {
    align-items: stretch;
    flex-direction: column;
  }

  .anonymous-result-claim-actions {
    justify-content: flex-start;
  }

  body {
    padding-top: 72px;
  }

  .fixed-top-bar {
    padding-right: 0.75rem !important;
    padding-left: 0.75rem !important;
  }

  .fixed-top-bar .navbar-collapse {
    margin-top: 0.7rem;
    padding: 0 0.25rem;
    border-top: 1px solid var(--cos-line);
  }

  .navbar-user {
    max-width: 100%;
  }

  .cosinor-container {
    width: calc(100% - 1rem);
    margin: 0.75rem auto;
  }

  .analysis-hero-grid {
    grid-template-columns: 1fr;
  }

  .analysis-hero-copy {
    text-align: center;
  }

  .analysis-hero-copy h1,
  .analysis-hero-lead {
    margin-right: auto;
    margin-left: auto;
  }

  .analysis-hero-copy .eyebrow,
  .analysis-hero-actions,
  .trust-row {
    justify-content: center;
  }

  .model-card {
    width: min(100%, 650px);
    margin: auto;
  }

  .capability-grid article {
    padding: 1.35rem 1rem;
    align-items: flex-start;
  }

  .content-hero,
  .account-layout {
    grid-template-columns: 1fr;
  }

  .about-equation-card {
    max-width: 680px;
  }

}

@media (max-width: 767.98px) {
  .comparison-workspace-heading {
    align-items: stretch;
    flex-direction: column;
  }

  .comparison-workspace-heading .btn {
    width: 100%;
  }

  .plot-container {
    height: clamp(350px, 68vw, 440px);
  }

  #polarPlot {
    height: clamp(380px, 90vw, 500px);
  }

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

  .capability-grid article,
  .capability-grid article:first-child {
    min-height: auto;
    border-right: 1px solid var(--cos-line);
    border-bottom: 1px solid var(--cos-line);
    border-left: 1px solid var(--cos-line);
  }

  .capability-grid article:last-child {
    border-bottom: 0;
  }

  .workspace-heading,
  .analysis-submit-row,
  .account-callout {
    align-items: stretch;
    flex-direction: column;
  }

  .workspace-step {
    width: max-content;
  }

  .analysis-submit-row .btn,
  .account-callout .btn {
    width: 100%;
  }

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

  .content-card-wide {
    grid-column: auto;
  }

  .citation-card,
  .results-hero,
  .account-hero,
  .danger-zone {
    align-items: stretch;
    flex-direction: column;
  }

  .citation-card .btn,
  .results-hero .btn,
  .danger-zone .btn {
    width: 100%;
  }

  .account-meta {
    margin-left: 0;
    align-items: flex-start;
  }
}

@media (max-width: 575.98px) {
  .results-workspace-nav {
    display: grid;
    grid-template-columns: 1fr 1fr;
  }

  .auth-page {
    padding: 1rem 0.75rem;
  }

  .auth-card {
    padding: 1.4rem 1.1rem;
    border-radius: 18px;
  }

  .auth-links {
    flex-direction: column;
  }

  .cosinor-container {
    padding: 1rem;
    border-radius: 14px;
  }

  .brand-name {
    font-size: 1rem;
  }

  .analysis-hero {
    padding: 2.5rem 0.35rem 3rem;
  }

  .analysis-hero-copy h1 {
    font-size: clamp(2.3rem, 12vw, 3.35rem);
  }

  .analysis-hero-actions {
    flex-direction: column;
  }

  .analysis-hero-actions .btn {
    width: 100%;
  }

  .trust-row {
    align-items: center;
    flex-direction: column;
  }

  .model-card {
    padding: 1rem;
    border-radius: 20px;
  }

  .model-card-topline {
    align-items: flex-start;
  }

  .model-metrics {
    grid-template-columns: repeat(2, 1fr);
    gap: 0.8rem;
  }

  .analysis-workspace {
    margin-top: 1.5rem;
    padding: 1.15rem;
    border-radius: 18px;
  }

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

  .data-field-card {
    padding: 0.8rem;
  }

  .data-field-hint {
    float: none;
    display: block;
    margin: -0.25rem 0 0.65rem 2.1rem;
  }

  .account-callout {
    margin-right: 0.5rem;
    margin-left: 0.5rem;
  }

  .content-page,
  .account-page {
    padding: 1.25rem 0.5rem 0;
  }

  .content-hero {
    padding: 1.5rem;
    border-radius: 20px;
  }

  .content-hero h1 {
    font-size: clamp(2rem, 11vw, 2.8rem);
  }

  .content-hero-actions {
    flex-direction: column;
  }

  .content-hero-actions .btn {
    width: 100%;
  }

  .content-card,
  .citation-copy {
    flex-direction: column;
  }

  .compact-definition-list div,
  .profile-data-list div {
    grid-template-columns: 1fr;
    gap: 0.25rem;
  }

  .compact-definition-list dd {
    text-align: left;
  }

  .results-dashboard {
    padding: 1rem;
  }

  .results-dashboard-heading {
    align-items: flex-start;
    flex-direction: column;
  }

  .result-actions {
    min-width: max-content;
  }

  .profile-avatar {
    width: 56px;
    height: 56px;
    flex-basis: 56px;
    border-radius: 17px;
  }

  #feedbackButton {
    right: 12px;
    bottom: 12px;
  }

  #feedbackModal {
    right: 10px;
    bottom: 70px;
    width: calc(100vw - 20px);
    max-height: calc(100vh - 90px);
    overflow-y: auto;
    border-radius: 16px;
  }

  footer.donation {
    text-align: left;
  }

  .support-card,
  .support-card-copy {
    align-items: flex-start;
  }

  .support-card {
    flex-direction: column;
    padding: 1.25rem;
  }

  .support-card-qr {
    align-self: center;
  }
}
.version-timeline {
  position: relative;
  max-width: 920px;
  margin: 2rem auto 0;
}

.version-timeline::before {
  position: absolute;
  top: 1rem;
  bottom: 1rem;
  left: 9px;
  width: 2px;
  background: var(--cos-line);
  content: "";
}

.version-entry {
  position: relative;
  padding: 0 0 1.5rem 2.5rem;
}

.version-marker {
  position: absolute;
  top: 1.4rem;
  left: 2px;
  width: 16px;
  height: 16px;
  background: var(--cos-surface);
  border: 4px solid var(--cos-primary);
  border-radius: 50%;
}

.version-card {
  padding: 1.5rem;
  background: var(--cos-surface);
  border: 1px solid var(--cos-line);
  border-radius: 20px;
  box-shadow: var(--cos-shadow-sm);
}

.version-entry-current .version-card {
  border-color: rgba(47, 93, 170, 0.35);
}

.version-card h2 {
  margin-bottom: 0.75rem;
}

.version-card p:last-child,
.version-card ul {
  margin-bottom: 0;
  color: var(--cos-muted);
}

.feedback-trap {
  position: absolute !important;
  left: -10000px !important;
  width: 1px !important;
  height: 1px !important;
  overflow: hidden !important;
}