:root {
  --accent: #56d1ff;
  --bg: #050914;
  --bg-soft: #0b1324;
  --panel: rgba(9, 15, 31, 0.82);
  --panel-strong: rgba(8, 13, 27, 0.94);
  --panel-soft: rgba(255, 255, 255, 0.04);
  --line: rgba(148, 163, 184, 0.18);
  --line-strong: rgba(148, 163, 184, 0.3);
  --text: #f8fbff;
  --muted: #9fb1c7;
  --shadow: 0 30px 80px rgba(0, 0, 0, 0.35);
  --radius-xl: 30px;
  --radius-lg: 24px;
  --radius-md: 18px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  overflow-x: clip;
  background:
    radial-gradient(circle at 0% 0%, rgba(86, 209, 255, 0.14), transparent 28%),
    radial-gradient(circle at 100% 12%, rgba(159, 136, 255, 0.12), transparent 24%),
    radial-gradient(circle at 50% 100%, rgba(255, 127, 103, 0.1), transparent 28%),
    linear-gradient(180deg, #040813 0%, #08111f 45%, #040813 100%);
  color: var(--text);
  font-family: "Sora", sans-serif;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 34px 34px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.4), transparent 90%);
}

a {
  color: inherit;
}

.site-shell {
  position: relative;
  max-width: 1400px;
  margin: 0 auto;
  padding: 24px 20px 48px;
}

.topbar {
  display: grid;
  grid-template-columns: auto minmax(260px, 1fr) auto;
  align-items: center;
  gap: 16px;
  margin-bottom: 22px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 12px 18px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
  backdrop-filter: blur(16px);
  box-shadow: var(--shadow);
  font-weight: 700;
  letter-spacing: -0.03em;
  text-decoration: none;
}

.brand::before {
  content: "";
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 24px var(--accent);
}

.top-links {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: flex-end;
  justify-self: end;
}

.top-search {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.top-search input {
  border-radius: 999px;
  padding-inline: 18px;
}

.search-submit {
  flex-shrink: 0;
  border-radius: 999px;
  padding: 14px 18px;
}

.top-links a,
.footer-links a {
  padding: 11px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.03);
  color: var(--muted);
  text-decoration: none;
  transition: transform 0.18s ease, border-color 0.18s ease, color 0.18s ease;
  white-space: nowrap;
}

.top-links a:hover,
.footer-links a:hover {
  transform: translateY(-1px);
  border-color: var(--line-strong);
  color: var(--text);
}

.layout-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(200px, 220px);
  grid-template-areas: "content ad";
  gap: 24px;
  align-items: start;
}

.content-stack {
  grid-area: content;
  display: grid;
  gap: 24px;
  min-width: 0;
}

.hero-panel,
.page-hero,
.calc-stage,
.related-section,
.site-footer,
.ad-rail,
.ad-floor {
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  background: var(--panel);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
  min-width: 0;
}

.hero-panel,
.page-hero,
.calc-stage,
.related-section,
.site-footer {
  padding: 28px;
}

.ad-rail,
.ad-floor {
  margin-top: 32px;
  padding: 18px;
}

.ad-rail {
  grid-area: ad;
  position: sticky;
  top: 24px;
}

.ad-label,
.hero-kicker,
.page-index,
.section-kicker,
.card-order,
.card-rank {
  margin: 0;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
}

.hero-panel h1,
.page-hero h1 {
  margin: 14px 0 0;
  font-size: clamp(2.6rem, 7vw, 4.9rem);
  line-height: 0.95;
  letter-spacing: -0.06em;
}

.hero-panel p:not(.hero-kicker),
.page-summary,
.site-footer p:last-child {
  margin: 12px 0 0;
  max-width: 46rem;
  color: var(--muted);
  line-height: 1.65;
}

.quick-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 22px;
}

.stat-chip {
  padding: 18px;
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 22px;
  background: var(--panel-soft);
}

.stat-chip span {
  display: block;
  color: var(--muted);
  font-size: 0.92rem;
}

.stat-chip strong {
  display: block;
  margin-top: 8px;
  font-size: 1.05rem;
  letter-spacing: -0.03em;
}

.home-grid,
.related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
}

.calc-link-card,
.related-card {
  position: relative;
  display: grid;
  gap: 10px;
  min-height: 180px;
  padding: 20px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.02)),
    rgba(255, 255, 255, 0.02);
  text-decoration: none;
  transition: transform 0.18s ease, border-color 0.18s ease, background 0.18s ease;
}

.calc-link-card::before {
  content: "";
  width: 44px;
  height: 44px;
  border-radius: 16px;
  background: var(--card-accent, var(--accent));
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.24);
}

.calc-link-card:hover,
.related-card:hover {
  transform: translateY(-3px);
  border-color: rgba(255, 255, 255, 0.18);
}

.card-title,
.related-card strong,
.site-footer h2 {
  margin: 0;
  letter-spacing: -0.04em;
}

.card-title {
  font-size: 1.18rem;
}

.card-blurb,
.related-card span {
  margin: 0;
  color: var(--muted);
  line-height: 1.55;
}

.card-meta {
  margin-top: auto;
  color: #dff7ff;
  font-size: 0.92rem;
}

.home-inline-ad {
  grid-column: 1 / -1;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--panel);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.home-inline-ad .adsbygoogle {
  min-height: 180px;
}

.mobile-calc-ad {
  display: none;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--panel);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
  min-width: 0;
  text-align: center;
}

.mobile-calc-ad .adsbygoogle {
  width: 320px;
  max-width: 100%;
  min-height: 50px;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--muted);
  font-size: 0.92rem;
}

.breadcrumb a {
  text-decoration: none;
}

.card-head {
  display: flex;
  justify-content: space-between;
  align-items: start;
  gap: 18px;
}

.card-head h2 {
  margin: 8px 0 0;
  font-size: 1.55rem;
  letter-spacing: -0.04em;
}

.card-note {
  margin: 0;
  max-width: 24rem;
  color: var(--muted);
  line-height: 1.6;
  text-align: right;
}

.scientific-display,
.calc-form,
.gpa-rows {
  display: grid;
  gap: 14px;
  min-width: 0;
}

.calc-form label,
.scientific-display label {
  display: grid;
  gap: 8px;
  min-width: 0;
  font-size: 0.95rem;
  color: #dce6f2;
}

input,
select,
textarea {
  min-width: 0;
  max-width: 100%;
  width: 100%;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 16px;
  padding: 15px 16px;
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
  font: inherit;
}

input[type="date"],
input[type="time"] {
  font-size: 0.95rem;
  padding-inline: 12px;
}

input[type="date"]::-webkit-datetime-edit,
input[type="time"]::-webkit-datetime-edit {
  overflow: hidden;
  padding: 0;
}

textarea {
  resize: vertical;
}

input::placeholder {
  color: #8496ac;
}

input[type="date"]::-webkit-calendar-picker-indicator {
  filter: invert(1) brightness(1.2);
}

select {
  appearance: none;
}

.scientific-display input {
  font-family: "IBM Plex Mono", monospace;
  font-size: 1.05rem;
}

.helper-text {
  margin: 0;
  color: var(--muted);
  font-size: 0.88rem;
}

.form-result-grid,
.field-row,
.gpa-row,
.scientific-layout {
  display: grid;
  gap: 16px;
}

.form-result-grid {
  grid-template-columns: minmax(0, 1.15fr) minmax(280px, 0.85fr);
  align-items: start;
}

.form-result-grid > * {
  min-width: 0;
}

.content-stack > * {
  min-width: 0;
  overflow-x: clip;
}

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

.form-group {
  display: grid;
  gap: 14px;
}

.scientific-layout {
  grid-template-columns: minmax(0, 1.6fr) minmax(280px, 0.8fr);
}

.scientific-pad {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
}

button {
  border: 0;
  border-radius: 16px;
  padding: 15px 16px;
  background: var(--accent);
  color: #04111d;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.18s ease, filter 0.18s ease;
}

button:hover {
  transform: translateY(-1px);
  filter: brightness(1.03);
}

.scientific-pad button {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
  font-weight: 600;
}

.equals {
  background: var(--accent) !important;
  color: #04111d !important;
}

.secondary-button {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text);
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.form-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.result-panel {
  display: grid;
  gap: 12px;
  padding: 20px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 22px;
  background: var(--panel-strong);
}

.result-label {
  margin: 0;
  color: var(--muted);
  font-size: 0.82rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.result-value {
  margin: 0;
  font-size: clamp(2.2rem, 5vw, 3.4rem);
  line-height: 0.96;
  letter-spacing: -0.06em;
}

.result-footnote {
  margin: 0;
  color: var(--muted);
  line-height: 1.55;
}

.result-metrics {
  display: grid;
  gap: 12px;
}

.result-metrics > div {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding-top: 12px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.result-metrics span {
  color: var(--muted);
}

.gpa-row {
  grid-template-columns: minmax(0, 1.5fr) minmax(110px, 0.8fr) minmax(110px, 0.8fr) auto;
  align-items: end;
}

.gpa-row button {
  padding-inline: 14px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.related-card {
  min-height: 0;
}

.hidden-block {
  display: none;
}

.ad-slot .adsbygoogle {
  min-height: 560px;
}

.ad-floor .adsbygoogle {
  min-height: 180px;
}

.noscript-banner {
  margin-top: 18px;
  padding: 14px 18px;
  border-radius: 16px;
  background: #2b1320;
  color: #ffe5ef;
}

@media (max-width: 1080px) {
  .layout-grid,
  .form-result-grid,
  .scientific-layout {
    grid-template-columns: 1fr;
  }

  .layout-grid {
    grid-template-areas:
      "content"
      "ad";
  }

  .ad-rail {
    position: static;
  }

  .ad-slot .adsbygoogle {
    min-height: 240px;
  }
}

@media (max-width: 760px) {
  .site-shell {
    padding: 16px 14px 36px;
  }

  .topbar {
    grid-template-columns: minmax(0, 1fr) auto;
    grid-template-areas:
      "brand links"
      "search search";
    align-items: center;
    justify-content: space-between;
    gap: 12px;
  }

  .brand {
    grid-area: brand;
  }

  .top-links {
    grid-area: links;
  }

  .hero-panel,
  .page-hero,
  .calc-stage,
  .related-section,
  .site-footer {
    padding: 22px 18px;
  }

  .quick-stats,
  .field-row,
  .gpa-row {
    grid-template-columns: 1fr;
  }

  .card-head,
  .result-metrics > div {
    align-items: start;
  }

  .top-search {
    grid-area: search;
    grid-column: 1 / -1;
    width: 100%;
  }

  .top-search {
    flex-direction: column;
  }

  .top-search input,
  .search-submit {
    width: 100%;
  }

  input[type="date"],
  input[type="time"] {
    font-size: 0.88rem;
    padding-inline: 10px;
  }

  .top-links {
    justify-self: end;
    align-self: center;
  }

  .ad-rail {
    display: none;
  }

  .layout-grid {
    grid-template-areas: "content";
  }

  .mobile-calc-ad {
    display: block;
  }

  .mobile-calc-ad .adsbygoogle {
    min-height: 50px;
  }

  .card-note {
    text-align: left;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .calc-link-card,
  .related-card,
  .top-links a,
  .footer-links a,
  button {
    transition: none;
  }
}