/* =====================================================
   NDS-JMU WEBSITE STYLES
   =====================================================
   HOW THIS FILE IS ORGANIZED (in order):
     1. Variables      — all colors, fonts, spacing
     2. Base           — resets and defaults
     3. Reusable bits  — section labels, buttons, photos
     4. Hero / header
     5. Sticky nav
     6. About
     7. What We Do
     8. Speakers
     9. Meetings
    10. Project Teams
    11. Leadership
    12. Sponsors
    13. Join / Get Involved
    14. Footer
    15. Mobile (responsive) rules
   To change a color or font everywhere, edit section 1.
   ===================================================== */

/* =====================================================
   1. VARIABLES — change these to restyle the whole site
   ===================================================== */
:root {
  /* Colors (match the posters) */
  --navy:       #1E3244;  /* deep navy — header, footer, dark bars */
  --accent:     #527A9C;  /* muted steel blue — buttons, labels, accents */
  --light:      #F1F1F1;  /* off-white — page background */
  --white:      #FFFFFF;  /* card backgrounds */
  --ink:        #1B1B1B;  /* charcoal body text on light backgrounds */
  --slate:      #6B7B8C;  /* secondary text, captions */
  --steel:      #527A9C;  /* mid blue — photo tint */
  --sky:        #9FC4E3;  /* light powder blue — small labels on navy */
  --line:       #DEE3E8;  /* thin borders on light backgrounds */

  /* Fonts */
  --font-body:    "Inter", "Helvetica Neue", Arial, sans-serif;
  --font-display: "Oswald", "Arial Narrow", sans-serif;      /* big condensed headers */
  --font-mono:    "JetBrains Mono", "Courier New", monospace; /* "// LABELS" */

  /* Spacing — used for section padding */
  --space-section: clamp(72px, 10vw, 128px); /* gap above/below each section */
  --content-width: 1120px;                   /* max width of content */
}

/* =====================================================
   2. BASE
   ===================================================== */
* { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;        /* smooth scrolling to anchors, no JS needed */
  scroll-padding-top: 84px;       /* stops anchors hiding behind the sticky nav */
}

body {
  font-family: var(--font-body);
  background: var(--light);
  color: var(--ink);
  line-height: 1.6;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
}

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

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

/* Every content block sits in a centered column */
.container {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 0 24px;
}

section { padding: var(--space-section) 0; }

/* =====================================================
   3. REUSABLE BITS
   ===================================================== */

/* Gold monospace label, e.g. "// ABOUT" */
.section-label {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  display: block;
  margin-bottom: 16px;
}

/* Big condensed section headline, e.g. "WHO WE ARE" */
.section-headline {
  font-family: var(--font-display);
  font-size: clamp(36px, 5vw, 56px);
  font-weight: 600;
  line-height: 1.05;
  text-transform: uppercase;
  letter-spacing: 0.01em;
  color: var(--navy);
  margin-bottom: 28px;
  text-wrap: balance;
}

/* Buttons */
.btn {
  display: inline-block;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 16px;
  text-decoration: none;
  padding: 14px 32px;
  border: 2px solid transparent;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
}
.btn-primary {                    /* primary button */
  background: var(--accent);
  color: var(--white);
  border-color: var(--accent);
}
.btn-primary:hover { background: #648BAC; border-color: #648BAC; color: var(--white); }
.btn-outline-light {              /* secondary on navy backgrounds */
  background: transparent;
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.45);
}
.btn-outline-light:hover { border-color: var(--white); color: var(--white); }
.btn-outline-dark {               /* secondary on light backgrounds */
  background: transparent;
  color: var(--navy);
  border-color: var(--navy);
}
.btn-outline-dark:hover { background: var(--navy); color: var(--white); }

/* Blue-tinted photo treatment (matches the posters).
   Wrap any <img> in <figure class="tinted-photo"> to get the effect. */
.tinted-photo {
  position: relative;
  overflow: hidden;
  background: var(--navy);
}
.tinted-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(100%) contrast(1.05); /* photo becomes black & white... */
}
.tinted-photo::after {                    /* ...then this blue layer tints it */
  content: "";
  position: absolute;
  inset: 0;
  background: var(--steel);
  mix-blend-mode: multiply;
  pointer-events: none;
}

/* Gold corner brackets (decorative, like the posters).
   Add class "corner-brackets" to a positioned element. */
.corner-brackets::before,
.corner-brackets::after {
  content: "";
  position: absolute;
  width: 22px;
  height: 22px;
  border: 2px solid var(--accent);
  pointer-events: none;
}
.corner-brackets::before { top: 0; left: 0; border-right: none; border-bottom: none; }
.corner-brackets::after  { bottom: 0; right: 0; border-left: none; border-top: none; }

/* =====================================================
   4. HERO / HEADER (navy block at the top)
   ===================================================== */
.hero {
  background: var(--navy);
  color: var(--white);
  padding: 0 0 clamp(72px, 9vw, 120px);
}

/* Thin bar at the very top with two monospace labels */
.hero-topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 20px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
  margin-bottom: clamp(56px, 8vw, 104px);
}
.hero-topbar span {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.18em;
  color: var(--sky);
}

.hero-inner { position: relative; padding: 8px 0 8px 40px; }

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(44px, 7.5vw, 96px);
  font-weight: 700;
  line-height: 1.02;
  text-transform: uppercase;
  max-width: 14ch;
}

/* Gold italic tagline — "From Classroom to Clearance" */
.hero-tagline {
  color: var(--sky);
  font-style: italic;
  font-size: clamp(20px, 2.6vw, 28px);
  margin: 24px 0 16px;
}

.hero-mission {
  font-size: clamp(17px, 1.8vw, 19px);
  color: rgba(255, 255, 255, 0.82);
  max-width: 54ch;
  margin-bottom: 40px;
}

.hero-buttons { display: flex; gap: 16px; flex-wrap: wrap; }

/* =====================================================
   5. STICKY NAV (sits below the hero, sticks on scroll)
   ===================================================== */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(245, 247, 250, 0.88);  /* semi-transparent... */
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);            /* ...with subtle blur */
  border-bottom: 1px solid var(--line);
}
.site-nav.is-stuck { box-shadow: 0 2px 16px rgba(10, 22, 40, 0.08); } /* added by script.js */

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 76px;
}

.nav-wordmark {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 19px;
  letter-spacing: 0.04em;
  color: var(--navy);
  text-decoration: none;
  white-space: nowrap;
}
.nav-wordmark img { height: 64px; width: auto; }

.nav-links {
  display: flex;
  gap: 28px;
  list-style: none;
}
.nav-links a {
  font-size: 15px;
  font-weight: 500;
  color: var(--ink);
  text-decoration: none;
}
.nav-links a:hover { color: var(--steel); }

.nav-join {
  font-size: 14px;
  padding: 9px 22px;
  white-space: nowrap;
}

/* Hamburger button — hidden on desktop, and hidden entirely
   when JavaScript is off (the links just wrap instead) */
.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  padding: 8px 14px;
  color: var(--navy);
  cursor: pointer;
}

/* =====================================================
   6. ABOUT
   ===================================================== */
.about-columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  max-width: 60em;
}
.about-columns p { color: var(--ink); }

.about-footnote {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--slate);
  margin-top: 40px;
}

/* =====================================================
   7. WHAT WE DO (three pillar cards)
   ===================================================== */
.what-we-do { background: var(--white); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }

.pillar-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.pillar-card {
  background: var(--white);
  border: 1px solid var(--line);
  padding: 36px 32px;
}
.pillar-number {
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.14em;
  color: var(--accent);
  display: block;
  margin-bottom: 20px;
}
.pillar-card h3 {
  font-family: var(--font-display);
  font-size: 26px;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--navy);
  margin-bottom: 12px;
}
.pillar-card p { color: var(--slate); font-size: 16px; }

/* =====================================================
   8. SPEAKERS (2x2 grid of cards)
   ===================================================== */
.speaker-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
}

.speaker-card {
  background: var(--white);
  border: 1px solid var(--line);
  display: grid;
  grid-template-columns: 200px 1fr;
}
.speaker-card .tinted-photo { min-height: 240px; }
.speaker-card img { position: absolute; inset: 0; }

.speaker-info { padding: 28px; display: flex; flex-direction: column; justify-content: center; }

.speaker-date {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.14em;
  color: var(--accent);
  margin-bottom: 10px;
}
.speaker-info h3 {
  font-family: var(--font-display);
  font-size: 26px;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--navy);
  line-height: 1.1;
  margin-bottom: 6px;
}
.speaker-title { font-weight: 500; font-size: 15.5px; color: var(--ink); margin-bottom: 8px; }
.speaker-note  { font-size: 14.5px; color: var(--slate); }

/* =====================================================
   9. MEETINGS
   ===================================================== */
.meetings { background: var(--white); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }

/* Navy bar showing day / time / location (like the poster's date bar) */
.meeting-bar {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  background: var(--navy);
  color: var(--white);
  margin: 8px 0 20px;
}
.meeting-bar > div { padding: 24px 32px; }
.meeting-bar > div + div { border-left: 1px solid rgba(255, 255, 255, 0.14); }
.meeting-bar dt {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--sky);
  margin-bottom: 6px;
}
.meeting-bar dd {
  font-family: var(--font-display);
  font-size: clamp(24px, 3vw, 34px);
  font-weight: 600;
  text-transform: uppercase;
}

.meeting-note { color: var(--slate); max-width: 60ch; margin-bottom: 48px; }

/* Semester key-dates list */
.dates-heading {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.16em;
  color: var(--accent);
  margin-bottom: 12px;
}
.dates-table { width: 100%; border-collapse: collapse; }
.dates-table td {
  padding: 14px 8px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}
.dates-table td:first-child {
  font-family: var(--font-mono);
  font-size: 13.5px;
  letter-spacing: 0.06em;
  color: var(--navy);
  white-space: nowrap;
  width: 200px;
  font-weight: 500;
}
.dates-table .date-tag {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.12em;
  color: var(--accent);
  margin-left: 10px;
}

/* =====================================================
   10. PROJECT TEAMS
   ===================================================== */
.projects-intro { max-width: 62ch; color: var(--ink); margin-bottom: 40px; }

.domain-list {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  list-style: none;
  margin-bottom: 44px;
}
.domain-list li {
  font-family: var(--font-mono);
  font-size: 14.5px;
  letter-spacing: 0.1em;
  border: 1px solid var(--navy);
  color: var(--navy);
  padding: 12px 24px;
  background: var(--white);
}

/* =====================================================
   11. LEADERSHIP
   ===================================================== */
.leadership { background: var(--white); border-top: 1px solid var(--line); }

.officer-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-bottom: 56px;
}
.officer-card { border: 1px solid var(--line); background: var(--white); }
.officer-card .tinted-photo { aspect-ratio: 5 / 6; }
.officer-body { padding: 20px 22px 24px; }
.officer-body h3 {
  font-family: var(--font-display);
  font-size: 21px;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--navy);
}
.officer-role {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--accent);
  text-transform: uppercase;
  margin: 4px 0 10px;
}
.officer-bio { font-size: 14px; color: var(--slate); }

/* Faculty advisor line below the officer grid */
.advisor {
  border-top: 1px solid var(--line);
  padding-top: 28px;
  display: flex;
  gap: 24px;
  align-items: baseline;
  flex-wrap: wrap;
}
.advisor-label {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.16em;
  color: var(--accent);
}
.advisor strong { font-size: 18px; color: var(--navy); }
.advisor span:last-child { color: var(--slate); }

/* =====================================================
   12. SPONSORS
   ===================================================== */
.sponsors { background: var(--white); border-top: 1px solid var(--line); }

.sponsors-intro {
  max-width: 62ch;
  color: var(--ink);
  margin-bottom: 48px;
}

/* Grid of sponsor logo cards. Each card is a link. */
.sponsor-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 20px;
  margin-bottom: 40px;
}

.sponsor-card {
  display: flex;
  align-items: center;
  justify-content: center;
  aspect-ratio: 3 / 2;
  padding: 24px;
  background: var(--light);
  border: 1px solid var(--line);
  transition: border-color 0.2s, transform 0.2s;
  text-decoration: none;
}
.sponsor-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}
.sponsor-card img {
  max-width: 100%;
  max-height: 100%;
  width: auto;
  height: auto;
  object-fit: contain;
  /* Slightly desaturate for consistent look; hover restores full color. */
  filter: grayscale(20%);
  transition: filter 0.2s;
}
.sponsor-card:hover img { filter: grayscale(0%); }

.sponsors-cta { margin-top: 8px; }

/* =====================================================
   13. JOIN / GET INVOLVED (navy call-to-action card)
   ===================================================== */
.join-card {
  position: relative;
  background: var(--navy);
  color: var(--white);
  padding: clamp(48px, 7vw, 88px) clamp(32px, 6vw, 80px);
}
.join-card .section-headline { color: var(--white); }
.join-card .section-label { color: var(--sky); } /* powder blue reads better on navy */
.join-card p { color: rgba(255, 255, 255, 0.82); max-width: 52ch; margin-bottom: 36px; }
.join-buttons { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 36px; }

.join-contact {
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.06em;
  display: flex;
  gap: 28px;
  flex-wrap: wrap;
}
.join-contact a { color: var(--sky); text-decoration: none; }
.join-contact a:hover { color: var(--white); text-decoration: underline; }

/* =====================================================
   14. FOOTER
   ===================================================== */
.site-footer {
  background: var(--navy);
  color: rgba(255, 255, 255, 0.7);
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding: 56px 0 40px;
  font-size: 14px;
}
.footer-top {
  display: flex;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}
.footer-identity strong {
  display: block;
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--white);
  margin-bottom: 6px;
}
.footer-links { display: flex; gap: 24px; list-style: none; flex-wrap: wrap; }
.footer-links a { color: rgba(255, 255, 255, 0.7); text-decoration: none; }
.footer-links a:hover { color: var(--white); }

.footer-bottom {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding-top: 24px;
}
.footer-bottom .mono {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--sky);
}

/* =====================================================
   15. MOBILE / RESPONSIVE
   Rules below only apply on smaller screens.
   ===================================================== */

/* Tablets and below */
@media (max-width: 900px) {
  .pillar-grid   { grid-template-columns: 1fr; }
  .speaker-grid  { grid-template-columns: 1fr; }
  .officer-grid  { grid-template-columns: 1fr 1fr; }
  .about-columns { grid-template-columns: 1fr; gap: 20px; }

  /* Mobile nav: hide the link row behind a menu button (JS adds .js to <html>;
     without JS the links simply stay visible and wrap) */
  .js .nav-toggle { display: block; }
  .js .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 0;
    background: var(--light);
    border-bottom: 1px solid var(--line);
    padding: 8px 24px 16px;
  }
  .js .nav-links.is-open { display: flex; }
  .js .nav-links a { display: block; padding: 12px 0; border-bottom: 1px solid var(--line); }
  .nav-inner { flex-wrap: wrap; position: relative; }
  .nav-links:not(.is-open) { flex-wrap: wrap; gap: 12px 20px; } /* no-JS fallback */
}

/* Phones */
@media (max-width: 600px) {
  .speaker-card { grid-template-columns: 1fr; }
  .speaker-card .tinted-photo { min-height: 0; aspect-ratio: 4 / 3; }
  .speaker-card img { position: static; }
  .officer-grid { grid-template-columns: 1fr; }
  .meeting-bar { grid-template-columns: 1fr; }
  .meeting-bar > div + div { border-left: none; border-top: 1px solid rgba(255, 255, 255, 0.14); }
  .hero-inner { padding-left: 24px; }
  .dates-table td:first-child { width: auto; }
}