/*
  UNR Graduate Community — stylesheet
  Plain CSS, no build step. Organized top to bottom:
  reset -> tokens -> layout -> typography -> components -> page sections -> utilities -> media queries
*/

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

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

body {
  margin: 0;
}

img,
svg {
  max-width: 100%;
  display: block;
}

h1,
h2,
h3,
h4,
p,
figure,
blockquote,
dl,
dd {
  margin: 0;
}

ul,
ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

a {
  color: inherit;
}

button {
  font: inherit;
  color: inherit;
  background: none;
  border: none;
  cursor: pointer;
}

input,
textarea,
select {
  font: inherit;
}

/* ---------- Design tokens ---------- */
:root {
  --color-bg: #ffffff;
  --color-bg-alt: #f4f5f7;
  --color-bg-inset: #edf0f4;
  --color-border: #d9dce2;
  --color-text: #1c2027;
  --color-text-muted: #565d6b;

  --color-accent: #a15c1f;
  --color-accent-dark: #7c460f;
  --color-sage: #46583f;
  --color-sage-dark: #313d2c;
  --color-focus: #2563eb;

  --color-placeholder-bg: #f8f4ec;
  --color-placeholder-border: #cdb98c;
  --color-placeholder-text: #6b5a37;

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

  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-heading: Georgia, Cambria, "Times New Roman", Times, serif;

  --container-width: 75rem;
  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2.5rem;
  --space-5: 4rem;
}

/* ---------- Base ---------- */
body {
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.6;
}

h1,
h2,
h3,
h4 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.25;
  color: var(--color-sage);
}

h1 {
  font-size: clamp(2rem, 1.6rem + 1.6vw, 2.75rem);
}

h2 {
  font-size: clamp(1.5rem, 1.3rem + 0.8vw, 2rem);
}

h3 {
  font-size: 1.25rem;
}

p {
  max-width: 65ch;
}

a {
  text-decoration-thickness: 1px;
  text-underline-offset: 0.15em;
}

a:not([class]) {
  color: var(--color-sage);
}

a:not([class]):hover {
  color: var(--color-accent);
}

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

::selection {
  background: var(--color-accent);
  color: #fff;
}

/* ---------- Layout helpers ---------- */
.wrap {
  max-width: var(--container-width);
  margin-inline: auto;
  padding-inline: var(--space-3);
}

.section {
  padding-block: var(--space-5);
}

.section--alt {
  background: var(--color-bg-alt);
}

.section-heading {
  max-width: 42rem;
  margin-bottom: var(--space-4);
}

.section-heading p {
  color: var(--color-text-muted);
  margin-top: var(--space-1);
}

.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;
}

/* ---------- Skip link ---------- */
.skip-link {
  position: absolute;
  left: 0;
  top: -3rem;
  background: var(--color-sage);
  color: #fff;
  padding: 0.75rem 1.25rem;
  z-index: 100;
  border-radius: 0 0 var(--radius-sm) 0;
  transition: top 0.15s ease;
}

.skip-link:focus {
  top: 0;
}

@media (prefers-reduced-motion: reduce) {
  .skip-link {
    transition: none;
  }
}

/* ---------- Header / Nav ---------- */
.site-header {
  border-bottom: 1px solid var(--color-border);
  background: var(--color-bg);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: var(--space-2);
  gap: var(--space-3);
}

.brand {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
  text-decoration: none;
  line-height: 1.15;
}

.brand__name {
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--color-sage);
  font-size: 1.5rem;
}

.brand__tagline {
  font-family: var(--font-body);
  font-weight: 500;
  color: var(--color-sage);
  font-size: 0.8rem;
  letter-spacing: 0.02em;
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  min-height: 44px;
}

.nav-toggle__icon,
.nav-toggle__icon::before,
.nav-toggle__icon::after {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--color-text);
}

.nav-toggle__icon {
  position: relative;
}

.nav-toggle__icon::before,
.nav-toggle__icon::after {
  content: "";
  position: absolute;
  left: 0;
}

.nav-toggle__icon::before {
  top: -6px;
}

.nav-toggle__icon::after {
  top: 6px;
}

.nav-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-3);
}

.nav-list a {
  color: var(--color-sage);
  text-decoration: none;
  font-weight: 600;
  padding: 0.35rem 0.1rem;
  border-bottom: 2px solid transparent;
}

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

.nav-list a[aria-current="page"] {
  border-bottom-color: var(--color-sage);
}

.nav-list .placeholder-link {
  font-weight: 600;
}

.nav-list a.nav-link--featured {
  font-size: 1.1em;
  font-weight: 700;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 44px;
  padding: 0.7rem 1.4rem;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  font-weight: 600;
  text-decoration: none;
  font-size: 1rem;
}

.btn--primary {
  background: var(--color-sage);
  color: #fff;
}

.btn--primary:hover {
  background: var(--color-sage-dark);
}

.btn--secondary {
  background: transparent;
  color: var(--color-sage);
  border-color: var(--color-sage);
}

.btn--secondary:hover {
  background: var(--color-bg-alt);
}

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-3);
}

/* ---------- Placeholder pattern ---------- */
.placeholder-link {
  color: var(--color-placeholder-text);
  border-bottom: 1px dashed var(--color-placeholder-text);
  text-decoration: none;
  cursor: not-allowed;
}

.placeholder-note {
  font-size: 0.82em;
  font-weight: 400;
  opacity: 0.85;
}

.btn.placeholder-link {
  background: var(--color-placeholder-bg);
  color: var(--color-placeholder-text);
  border: 1px dashed var(--color-placeholder-border);
}

.placeholder-box {
  border: 1px dashed var(--color-placeholder-border);
  background: var(--color-placeholder-bg);
  color: var(--color-placeholder-text);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  text-align: center;
}

.placeholder-box h3 {
  color: var(--color-placeholder-text);
  margin-bottom: var(--space-1);
}

.placeholder-box code {
  display: inline-block;
  margin-top: var(--space-1);
  font-size: 0.85rem;
  background: rgba(0, 0, 0, 0.05);
  padding: 0.15rem 0.4rem;
  border-radius: var(--radius-sm);
}

/* ---------- Hero ---------- */
.hero {
  padding-block: var(--space-5);
  border-bottom: 1px solid var(--color-border);
}

.hero__eyebrow {
  color: var(--color-accent-dark);
  font-weight: 700;
  text-transform: uppercase;
  font-size: 0.85rem;
  letter-spacing: 0.08em;
}

.hero h1 {
  margin-top: var(--space-1);
}

.hero__lede {
  margin-top: var(--space-2);
  font-size: 1.15rem;
  color: var(--color-text-muted);
  max-width: 48rem;
}

.hero__disclaimer {
  margin-top: var(--space-2);
  font-size: 0.9rem;
  color: var(--color-text-muted);
  max-width: 48rem;
}

/* ---------- Calendar ---------- */
.calendar-frame-wrap {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 3;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.calendar-frame-wrap iframe {
  width: 100%;
  height: 100%;
  border: 0;
}

@media (min-width: 640px) {
  .calendar-frame-wrap {
    aspect-ratio: 16 / 9;
  }
}

/* ---------- Discord widget ---------- */
.discord-widget-wrap iframe {
  width: 100%;
  max-width: 350px;
  height: 500px;
  border: 0;
  border-radius: var(--radius-md);
}

/* ---------- Category / resource grids ---------- */
.category-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
  gap: var(--space-3);
}

.category-item {
  border-top: 3px solid var(--color-sage);
  padding: var(--space-3) 0 var(--space-2);
}

.category-item h3 {
  margin-bottom: 0.4rem;
}

.category-item h3 a {
  text-decoration: none;
}

.category-item h3 a:hover {
  color: var(--color-accent);
}

.category-item p {
  color: var(--color-text-muted);
  font-size: 0.97rem;
}

/* ---------- Resource lists ---------- */
.resource-section {
  padding-block: var(--space-4);
  border-bottom: 1px solid var(--color-border);
}

.resource-section:last-child {
  border-bottom: none;
}

.resource-list {
  margin-top: var(--space-2);
  display: grid;
  gap: var(--space-2);
}

.resource-item {
  padding: var(--space-2) 0;
  border-bottom: 1px solid var(--color-border);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--space-1) var(--space-3);
}

.resource-item:last-child {
  border-bottom: none;
}

.resource-item__title {
  font-weight: 600;
}

a.resource-item__title {
  color: var(--color-sage);
  text-decoration: none;
}

a.resource-item__title:hover {
  color: var(--color-accent);
  text-decoration: underline;
}

.resource-item__note {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  flex-basis: 100%;
}

.todo-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--color-placeholder-text);
  background: var(--color-placeholder-bg);
  border: 1px solid var(--color-placeholder-border);
  border-radius: var(--radius-sm);
  padding: 0.1rem 0.4rem;
}

/* ---------- Events categories ---------- */
.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: var(--space-2);
}

.tag {
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: 0.3rem 0.9rem;
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

/* ---------- Get involved ---------- */
.involved-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr));
  gap: var(--space-4);
}

.involved-item h3 {
  margin-bottom: 0.4rem;
}

.involved-item p {
  color: var(--color-text-muted);
}

/* ---------- Forms area (submission placeholders) ---------- */
.submission-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(18rem, 1fr));
  gap: var(--space-3);
  margin-top: var(--space-3);
}

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--color-border);
  background: var(--color-bg-alt);
  padding-block: var(--space-4);
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-bottom: var(--space-2);
}

.footer-nav a {
  color: var(--color-sage);
  text-decoration: none;
  font-weight: 600;
}

.footer-nav a:hover {
  color: var(--color-accent);
}

.disclaimer {
  color: var(--color-text-muted);
  font-size: 0.92rem;
  max-width: 60ch;
}

.footer-meta {
  margin-top: var(--space-2);
  color: var(--color-text-muted);
  font-size: 0.85rem;
}

/* ---------- About page ---------- */
.prose > * + * {
  margin-top: var(--space-2);
}

.prose h2 {
  margin-top: var(--space-4);
}

.prose ul,
.prose ol {
  list-style: disc;
  padding-left: 1.4rem;
}

.prose ul li + li,
.prose ol li + li {
  margin-top: 0.4rem;
}

/* ---------- Small screens ---------- */
@media (max-width: 700px) {
  .js .nav-toggle {
    display: inline-flex;
  }

  .js .site-nav {
    display: none;
    width: 100%;
  }

  .js .site-nav.is-open {
    display: block;
  }

  .js .nav-list {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-2);
    padding-block: var(--space-2);
  }

  .site-header__inner {
    flex-wrap: wrap;
  }
}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  * {
    scroll-behavior: auto !important;
  }
}