/* ============================================================
   Tokens
   ============================================================ */
:root {
  --color-bg: #faf7f2;
  --color-fg: #1f2024;
  --color-accent: #1e6fb8;
  --color-accent-2: #8b6f4e;
  --color-neutral: #c9c2b6;

  --color-fg-soft: #4a4b50;
  --color-bg-soft: #f1ece4;
  --color-rule: #e2dcd1;

  --font-serif: "Fraunces", "Iowan Old Style", Georgia, serif;
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI",
    Roboto, sans-serif;

  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 3rem;
  --space-8: 4rem;

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;

  --shadow-soft: 0 1px 2px rgba(31, 32, 36, 0.04),
    0 4px 16px rgba(31, 32, 36, 0.06);
}

/* ============================================================
   Reset / base
   ============================================================ */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-fg);
  font-family: var(--font-sans);
  font-size: 1.0625rem;
  line-height: 1.6;
  font-feature-settings: "ss01", "cv11";
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--color-accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

a:hover {
  text-decoration-thickness: 2px;
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
[type="radio"]:focus-visible + span {
  outline: 3px solid var(--color-accent);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

h1,
h2,
h3 {
  font-family: var(--font-serif);
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.01em;
  margin: 0 0 var(--space-4);
}

h1 {
  font-size: clamp(2rem, 4vw, 2.75rem);
}

h2 {
  font-size: clamp(1.4rem, 2.4vw, 1.75rem);
  margin-top: var(--space-7);
}

h3 {
  font-size: 1.25rem;
}

p {
  margin: 0 0 var(--space-4);
}

p + p {
  margin-top: 0;
}

blockquote {
  margin: var(--space-6) 0;
  padding: var(--space-5) var(--space-6);
  border-left: 3px solid var(--color-accent);
  background: var(--color-bg-soft);
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-style: italic;
  line-height: 1.4;
  color: var(--color-fg);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ============================================================
   Layout
   ============================================================ */
.container {
  width: 100%;
  max-width: 960px;
  margin: 0 auto;
  padding: 0 var(--space-5);
}

main.container {
  padding-top: var(--space-7);
  padding-bottom: var(--space-8);
}

main.essay,
.essay {
  max-width: 640px;
}

main.essay article > p,
.essay > p {
  font-size: 1.125rem;
}

.lede {
  font-size: 1.25rem;
  color: var(--color-fg-soft);
  margin-bottom: var(--space-6);
}

/* ============================================================
   Header / nav
   ============================================================ */
.site-header {
  border-bottom: 1px solid var(--color-rule);
  background: var(--color-bg);
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: saturate(1.2) blur(8px);
  -webkit-backdrop-filter: saturate(1.2) blur(8px);
}

.site-header > .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-5);
  padding-top: var(--space-4);
  padding-bottom: var(--space-4);
  flex-wrap: wrap;
}

.site-title {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 1.125rem;
  letter-spacing: -0.01em;
  color: var(--color-fg);
  text-decoration: none;
}

.nav-list {
  display: flex;
  gap: var(--space-5);
  list-style: none;
  margin: 0;
  padding: 0;
  flex-wrap: wrap;
}

.nav-list a {
  display: inline-block;
  padding: var(--space-2) 0;
  color: var(--color-fg-soft);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.9375rem;
  letter-spacing: 0.02em;
  border-bottom: 2px solid transparent;
  transition: color 0.15s ease, border-color 0.15s ease;
}

.nav-list a:hover {
  color: var(--color-fg);
}

.nav-list a.is-active {
  color: var(--color-fg);
  border-bottom-color: var(--color-accent);
}

/* ============================================================
   Intro / tool
   ============================================================ */
.intro {
  text-align: center;
  margin-bottom: var(--space-7);
}

.intro h1 {
  margin-bottom: var(--space-3);
}

.intro .lede {
  max-width: 520px;
  margin-left: auto;
  margin-right: auto;
}

.tool {
  margin-bottom: var(--space-8);
}

.tool-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 360px);
  gap: var(--space-7);
  align-items: start;
}

.tool-inputs {
  border: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: var(--space-5);
}

/* ============================================================
   Field controls
   ============================================================ */
.field {
  display: grid;
  gap: var(--space-2);
}

.field-label {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-3);
  font-weight: 500;
  font-size: 0.9375rem;
  color: var(--color-fg);
  letter-spacing: 0.01em;
}

.field-value {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 1rem;
  color: var(--color-accent);
  font-variant-numeric: tabular-nums;
}

.field-buttons {
  border: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: var(--space-2);
}

.field-buttons > legend.field-label {
  padding: 0;
  margin-bottom: var(--space-2);
}

.weather-pills {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.weather-pill {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-4);
  border: 1px solid var(--color-rule);
  border-radius: 999px;
  background: var(--color-bg);
  color: var(--color-fg-soft);
  font-size: 0.9375rem;
  font-weight: 500;
  min-height: 40px;
  font-variant-numeric: tabular-nums;
}

.weather-pill-icon {
  font-size: 1.1em;
  line-height: 1;
}

.weather-pill--loading,
.weather-pill--error {
  font-style: italic;
  opacity: 0.75;
}

.weather-impact {
  margin: 0 0 var(--space-2);
  font-size: 0.875rem;
  font-style: italic;
  font-weight: 600;
  color: var(--color-fg-soft);
  line-height: 1.4;
}

.weather-impact:empty {
  display: none;
}

.field-toggle {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-3);
  font-size: 0.875rem;
  color: var(--color-fg-soft);
  cursor: pointer;
  user-select: none;
}

.field-toggle input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: var(--color-accent);
  cursor: pointer;
}

.button-radio input[type="radio"]:disabled + span {
  opacity: 0.5;
  cursor: not-allowed;
}

.button-radio input[type="radio"]:disabled:checked + span {
  background: var(--color-accent);
  color: var(--color-bg);
  border-color: var(--color-accent);
  opacity: 0.85;
}

/* meta row beneath a field — used by the meetings calendar UI */
.field-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-3);
  margin: var(--space-1) 0 0;
  font-size: 0.8125rem;
  color: var(--color-fg-soft);
}

.field-meta:empty {
  display: none;
}

.link-button {
  background: none;
  border: 0;
  padding: 0;
  font: inherit;
  font-size: inherit;
  color: var(--color-accent);
  cursor: pointer;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

.link-button:hover {
  text-decoration-thickness: 2px;
}

.link-button:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

/* slider */
input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  background: transparent;
  width: 100%;
  height: 28px;
  margin: 0;
  cursor: pointer;
}

input[type="range"]::-webkit-slider-runnable-track {
  height: 6px;
  background: var(--color-rule);
  border-radius: 999px;
}

input[type="range"]::-moz-range-track {
  height: 6px;
  background: var(--color-rule);
  border-radius: 999px;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--color-accent);
  border: 3px solid var(--color-bg);
  margin-top: -7px;
  box-shadow: 0 1px 3px rgba(31, 32, 36, 0.2);
}

input[type="range"]::-moz-range-thumb {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--color-accent);
  border: 3px solid var(--color-bg);
  box-shadow: 0 1px 3px rgba(31, 32, 36, 0.2);
}

/* button-radio */
.button-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.button-radio {
  position: relative;
  cursor: pointer;
}

.button-radio input[type="radio"] {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.button-radio span {
  display: inline-block;
  padding: var(--space-2) var(--space-4);
  border: 1px solid var(--color-rule);
  border-radius: 999px;
  background: var(--color-bg);
  color: var(--color-fg-soft);
  font-size: 0.9375rem;
  font-weight: 500;
  transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
  min-height: 40px;
  display: inline-flex;
  align-items: center;
}

.button-radio:hover span {
  border-color: var(--color-fg-soft);
  color: var(--color-fg);
}

.button-radio input[type="radio"]:checked + span {
  background: var(--color-accent);
  color: var(--color-bg);
  border-color: var(--color-accent);
}

/* ============================================================
   Result panel
   ============================================================ */
.tool-result {
  background: var(--color-bg-soft);
  border: 1px solid var(--color-rule);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  text-align: center;
  box-shadow: var(--shadow-soft);
  position: sticky;
  top: 96px;
}

.result-label {
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-fg-soft);
  margin: 0 0 var(--space-2);
  font-weight: 500;
}

.result-score {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 4.5rem;
  line-height: 1;
  color: var(--color-accent);
  margin: 0 0 var(--space-1);
  font-variant-numeric: tabular-nums;
}

.result-verdict {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 1.25rem;
  color: var(--color-fg);
  margin: 0 0 var(--space-5);
}

.result-figure {
  margin: 0;
  display: grid;
  gap: var(--space-3);
  justify-items: center;
}

.result-figure img {
  width: 200px;
  height: 200px;
  border-radius: var(--radius-md);
  background: var(--color-neutral);
  object-fit: cover;
  border: 1px solid var(--color-rule);
}

.result-figure figcaption {
  font-size: 0.9375rem;
  color: var(--color-fg-soft);
  font-style: italic;
  max-width: 28ch;
  line-height: 1.4;
}

/* ============================================================
   Theories
   ============================================================ */
.theories {
  list-style: none;
  counter-reset: theory;
  padding: 0;
  margin: var(--space-7) 0 0;
  display: grid;
  gap: var(--space-5);
}

.theory {
  counter-increment: theory;
  background: var(--color-bg);
  border: 1px solid var(--color-rule);
  border-radius: var(--radius-md);
  padding: var(--space-5) var(--space-6);
  position: relative;
}

.theory::before {
  content: counter(theory, decimal-leading-zero);
  position: absolute;
  top: var(--space-4);
  right: var(--space-5);
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--color-neutral);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.05em;
}

.theory-text {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 1.125rem;
  line-height: 1.5;
  color: var(--color-fg);
  margin: 0 0 var(--space-3);
  padding-right: var(--space-6);
}

.theory-source {
  font-size: 0.875rem;
  color: var(--color-fg-soft);
  font-weight: 500;
  margin: 0;
}

/* ============================================================
   Footer
   ============================================================ */
.site-footer {
  border-top: 1px solid var(--color-rule);
  margin-top: var(--space-8);
  padding: var(--space-6) 0;
  background: var(--color-bg-soft);
  color: var(--color-fg-soft);
  font-size: 0.9375rem;
}

.site-footer p {
  margin: 0;
}

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 880px) {
  .tool-grid {
    grid-template-columns: 1fr;
  }
  .tool-result {
    position: static;
  }
}

@media (max-width: 640px) {
  .container {
    padding-left: var(--space-4);
    padding-right: var(--space-4);
  }

  main.container {
    padding-top: var(--space-5);
    padding-bottom: var(--space-7);
  }

  .site-header > .container {
    gap: var(--space-3);
  }

  .nav-list {
    gap: var(--space-4);
  }

  .result-score {
    font-size: 3.5rem;
  }

  .result-figure img {
    width: 160px;
    height: 160px;
  }

  blockquote {
    font-size: 1.125rem;
    padding: var(--space-4);
  }

  .theory {
    padding: var(--space-4) var(--space-5);
  }

  .theory-text {
    font-size: 1rem;
    padding-right: var(--space-5);
  }
}

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