/* Claude & Coffee — see SPEC.md for the visual system. */

:root {
  --kraft: #F3ECE0;
  --milk: #FBF7F1;
  --espresso: #2A1C14;
  --roast: #6B4A36;
  --crema: #E7C9A0;
  --clay: #C4673F;

  --display: "Fraunces", Georgia, "Times New Roman", serif;
  --body: "Instrument Sans", system-ui, -apple-system, "Segoe UI", sans-serif;

  --space-section: clamp(3.5rem, 9vw, 6.5rem);
}

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

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

body {
  margin: 0;
  background-color: var(--kraft);
  /* Faint kraft-paper mottling. */
  background-image:
    radial-gradient(circle at 18% 12%, rgb(107 74 54 / 0.05), transparent 40%),
    radial-gradient(circle at 85% 70%, rgb(107 74 54 / 0.04), transparent 45%);
  background-attachment: fixed;
  color: var(--espresso);
  font-family: var(--body);
  font-size: 1.0625rem;
  line-height: 1.6;
}

h1,
h2,
.wordmark,
.board-date {
  font-family: var(--display);
  font-optical-sizing: auto;
  font-variation-settings: "SOFT" 100, "WONK" 1;
  font-weight: 500;
  line-height: 1.15;
  margin: 0;
}

h1 {
  font-size: clamp(2rem, 6vw, 3.25rem);
  letter-spacing: -0.01em;
  max-width: 18ch;
}

h2 {
  font-size: clamp(1.5rem, 3.5vw, 2rem);
  margin-bottom: 0.75rem;
}

p {
  margin: 0;
  max-width: 65ch;
}

a {
  color: var(--espresso);
  text-decoration-color: var(--clay);
  text-decoration-thickness: 2px;
  text-underline-offset: 0.2em;
}

a:hover {
  text-decoration-thickness: 3px;
}

:focus-visible {
  outline: 3px solid var(--clay);
  outline-offset: 3px;
  border-radius: 2px;
}

.wrap {
  width: 100%;
  max-width: 1040px;
  margin-inline: auto;
  padding-inline: 1.25rem;
}

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

/* Header */

.site-header {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.25rem 1rem;
  padding-block: 1.25rem;
}

.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.375rem;
  font-weight: 600;
  text-decoration: none;
  white-space: nowrap;
}

.wordmark-mark {
  width: 1.75rem;
  height: 1.75rem;
  flex: none;
  color: var(--roast);
}

.header-link {
  font-weight: 500;
  white-space: nowrap;
}

/* Hero + menu board */

.hero {
  display: grid;
  gap: 2rem;
  padding-top: clamp(2rem, 6vw, 4.5rem);
}

.board {
  position: relative;
  padding: clamp(1.5rem, 5vw, 2.5rem);
  background-color: var(--espresso);
  background-image: radial-gradient(ellipse at 30% 20%, rgb(107 74 54 / 0.35), transparent 70%);
  color: var(--milk);
  border: 10px solid var(--roast);
  border-radius: 6px;
  box-shadow:
    inset 0 0 0 1px rgb(231 201 160 / 0.25),
    inset 0 2px 14px rgb(0 0 0 / 0.45),
    0 14px 30px -12px rgb(42 28 20 / 0.45);
  animation: board-settle 700ms cubic-bezier(0.2, 0.8, 0.3, 1) both;
}

/* Inner chalk line, like a framed chalkboard. */
.board::before {
  content: "";
  position: absolute;
  inset: 0.5rem;
  border: 1px solid rgb(231 201 160 / 0.3);
  border-radius: 2px;
  pointer-events: none;
}

.board-heading {
  font-size: 1.125rem;
  font-style: italic;
  font-weight: 400;
  color: var(--crema);
  margin-bottom: 0.25rem;
}

.board-date {
  font-size: clamp(2.25rem, 8vw, 3.25rem);
  font-weight: 600;
  color: var(--crema);
  max-width: none;
}

.board-details {
  margin: 1.5rem 0 0;
  padding-top: 1.25rem;
  border-top: 1px dashed rgb(231 201 160 / 0.45);
  display: grid;
  gap: 0.875rem;
}

.board-row {
  display: grid;
  gap: 0.125rem;
}

.board-details dt {
  font-size: 0.875rem;
  color: var(--crema);
}

.board-details dd {
  margin: 0;
  font-size: 1.125rem;
  font-weight: 500;
}

.board-address {
  display: block;
  font-size: 1rem;
  font-weight: 400;
  color: var(--crema);
}

.board-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.75rem;
}

.board :focus-visible {
  outline-color: var(--crema);
}

.schedule-note {
  color: var(--roast);
}

@keyframes board-settle {
  from {
    opacity: 0;
    transform: translateY(10px) rotate(-0.6deg);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* Buttons */

.button {
  display: inline-block;
  padding: 0.75rem 1.25rem;
  border: 2px solid var(--clay);
  border-radius: 999px;
  background: var(--clay);
  color: #fff;
  font: inherit;
  font-weight: 600;
  line-height: 1.2;
  text-decoration: none;
  cursor: pointer;
}

.button:hover {
  background: var(--espresso);
  border-color: var(--espresso);
}

.board .button:hover {
  background: var(--milk);
  border-color: var(--milk);
  color: var(--espresso);
}

.button-outline {
  background: transparent;
  border-color: var(--crema);
  color: var(--milk);
}

/* Sections */

.about,
.signup,
.past {
  margin-top: var(--space-section);
}

/* Signup */

.signup-form {
  display: grid;
  gap: 1rem;
  max-width: 26rem;
  margin-top: 1.25rem;
}

.field {
  display: grid;
  gap: 0.375rem;
}

.field label {
  font-weight: 600;
}

.optional {
  font-weight: 400;
  color: var(--roast);
}

.field input {
  width: 100%;
  padding: 0.75rem 0.875rem;
  background: var(--milk);
  color: var(--espresso);
  border: 1.5px solid var(--roast);
  border-radius: 6px;
  font: inherit;
}

.field input:focus-visible {
  outline-offset: 1px;
}

.signup-form .button {
  justify-self: start;
}

.signup-thanks {
  display: none;
  margin-top: 1rem;
  padding: 0.875rem 1rem;
  background: var(--milk);
  border-left: 4px solid var(--clay);
  border-radius: 4px;
  font-weight: 500;
}

.signup-thanks:target {
  display: block;
}

/* Past meetups */

.past-list {
  list-style: none;
  margin: 1rem 0 0;
  padding: 0;
  max-width: 65ch;
}

.past-list li {
  padding-block: 0.75rem;
  border-bottom: 1px solid var(--crema);
}

.past-date {
  font-weight: 600;
}

/* Footer */

.site-footer {
  margin-top: var(--space-section);
  padding-block: 2rem 2.5rem;
  border-top: 1px solid var(--crema);
  display: grid;
  gap: 0.5rem;
  color: var(--roast);
  font-size: 0.9375rem;
}

.disclaimer {
  color: var(--espresso);
}

/* Wide screens: description left, menu board right. */

@media (min-width: 800px) {
  .hero {
    grid-template-columns: 1fr minmax(0, 27rem);
    column-gap: 3rem;
    row-gap: 1.5rem;
  }

  .hero-intro {
    grid-column: 1;
    align-self: end;
  }

  .board {
    grid-column: 2;
    grid-row: 1 / span 2;
  }

  .schedule-note {
    grid-column: 1;
    grid-row: 2;
    align-self: start;
  }

  .board-row {
    grid-template-columns: 6.5rem 1fr;
    gap: 1rem;
  }

  .board-details dt {
    padding-top: 0.2rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .board {
    animation: none;
  }
}