:root {
  --primary: #cc0000;
  --primary-rgb: 204, 0, 0;
  --secondary: #000000;
  --dark: #333333;
  --light: #f8f8f8;
  --gray: #6c757d;
  --lightgray: #a1a1a1;
  --darkgray: #616161;
}

*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Arial', sans-serif;
  background-color: var(--light);
  color: var(--dark);
  line-height: 1.6;
  font-size: 16px;
}

/* Screen Reader Only */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* Layout */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 15px;
}

.container-wide {
  width: 100%;
  max-width: 1600px;
  margin: 0 auto;
  padding: 0 15px;
}

section {
  padding: 40px 0;
}

p {
  margin-bottom: 1rem;
  line-height: 1.6;
}

/* Header */
header {
  background-color: var(--secondary);
  color: white;
  padding: 0;
  box-shadow: 0 2px 5px rgba(0,0,0,0.1);
  position: sticky;
  top: 0;
  z-index: 1000;
  height: 60px;
}

.header-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 15px;
  height: 100%;
}

.logo {
  display: flex;
  align-items: center;
}

.logo img {
  margin-right: 8px;
  height: 35px;
  width: auto;
}

.logo h1 {
  margin: 0;
  font-size: 1.2rem;
  white-space: nowrap;
}

.program-toggle {
  display: none;
}

.program-toggle a {
  color: white;
  text-decoration: none;
  font-weight: 500;
  transition: color 0.3s ease;
}

.program-toggle a:hover,
.program-toggle a.active {
  color: var(--primary);
}

/* Mobile Menu Toggle */
.menu-toggle {
  display: flex;
  flex-direction: column;
  justify-content: space-around;
  width: 30px;
  height: 22px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 0;
  z-index: 1001;
}

.menu-toggle span {
  height: 3px;
  width: 100%;
  background: white;
  display: block;
  transition: all 0.3s ease-in-out;
  border-radius: 1px;
  transform-origin: center;
}

/* Hamburger to X animation */
.menu-toggle.active span:nth-child(1) {
  transform: translateY(9.5px) rotate(45deg);
}

.menu-toggle.active span:nth-child(2) {
  opacity: 0;
  transform: translateX(-10px);
}

.menu-toggle.active span:nth-child(3) {
  transform: translateY(-9.5px) rotate(-45deg);
}

/* Nav */
nav {
  position: absolute;
  top: 60px;
  left: 0;
  right: 0;
  background-color: var(--secondary);
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease-out;
  z-index: 999;
  border-top: 1px solid rgba(255,255,255,0.05);
}

nav.open {
  max-height: calc(100vh - 60px);
  overflow-y: auto;
  box-shadow: 0 4px 8px rgba(0,0,0,0.2);
  z-index: 1002;
}

nav ul {
  display: flex;
  flex-direction: column;
  list-style: none;
  margin: 0;
  padding: 10px 0;
}

nav ul li {
  position: relative;
  margin: 0;
  text-align: center;
  border-bottom: 1px solid rgba(255,255,255,0.05);
}

nav ul li:last-child {
  border-bottom: none;
}

nav ul li a {
  color: white;
  text-decoration: none;
  font-weight: 500;
  text-transform: uppercase;
  font-size: 0.9rem;
  letter-spacing: 0.5px;
  padding: 14px 15px;
  display: block;
  width: 100%;
  transition: background-color 0.2s ease, color 0.2s ease;
}

nav ul li a:hover,
nav ul li a.active {
  background-color: rgba(204, 0, 0, 0.2);
  color: #fff;
}

nav ul li a.active {
  font-weight: bold;
}

/* Sub-Navigation */
.sub-navigation {
  background-color: var(--dark);
  padding: 10px 0;
  border-bottom: 3px solid var(--primary);
  box-shadow: 0 2px 5px rgba(0,0,0,0.1);
  width: 100%;
  text-align: center;
  position: relative;
  min-height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.sub-navigation .container {
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
  width: 100%;
}

.sub-nav-toggle {
  display: block;
  padding: 8px 15px;
  background-color: #4f4f4f;
  color: white;
  border: 1px solid #777;
  border-radius: 5px;
  cursor: pointer;
  font-size: 0.9rem;
  font-weight: 500;
  line-height: 1.4;
  transition: background-color 0.3s, border-color 0.3s;
  z-index: 901;
}

.sub-nav-toggle:hover {
  background-color: #5f5f5f;
  border-color: #888;
}

.sub-nav-tabs {
  display: none;
  position: absolute;
  top: calc(100% + 3px);
  left: 0;
  right: 0;
  background-color: var(--dark);
  z-index: 900;
  box-shadow: 0 3px 5px rgba(0,0,0,0.15);
  flex-direction: column;
  align-items: stretch;
  gap: 1px;
  border-top: 1px solid rgba(255,255,255,0.1);
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease-out, padding 0.3s ease-out;
  padding: 0 10px;
}

.sub-nav-tabs.open {
  display: flex;
  max-height: 300px;
  padding: 10px;
  overflow-y: auto;
  z-index: 902;
}

.sub-nav-tabs .tab-item {
  padding: 10px 15px;
  color: white;
  background-color: transparent;
  border: none;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  text-decoration: none;
  font-weight: 500;
  transition: background-color 0.2s, color 0.2s;
  text-align: center;
  border-radius: 3px;
  text-transform: uppercase;
  font-size: 0.85rem;
  letter-spacing: 0.5px;
  display: block;
}

.sub-nav-tabs .tab-item:last-child {
  border-bottom: none;
}

.sub-nav-tabs .tab-item:hover {
  background-color: rgba(255, 255, 255, 0.1);
  color: white;
}

.sub-nav-tabs .tab-item.active {
  background-color: var(--primary);
  color: #ffffff;
  border-color: var(--primary);
  font-weight: 600;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 10px 20px;
  background: var(--primary);
  color: #ffffff;
  text-decoration: none;
  border-radius: 4px;
  font-weight: bold;
  transition: all 0.3s;
  border: 2px solid transparent;
  text-align: center;
  cursor: pointer;
  font-size: 0.9rem;
}

.btn:hover {
  background: #a30000;
  border-color: #a30000;
  transform: translateY(-2px);
  box-shadow: 0 2px 5px rgba(0,0,0,0.2);
}

.btn-outline {
  background: transparent;
  color: var(--primary);
  border-color: var(--primary);
}

.btn-outline:hover {
  background: var(--primary);
  color: white;
}

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

.btn-secondary:hover {
  background: var(--darkgray);
  border-color: var(--darkgray);
}

/* Section Headers */
.section-header {
  text-align: center;
  margin-bottom: 30px;
  position: relative;
}

.section-header h2 {
  color: #1a1a1a;
  font-size: 1.8rem;
  margin-bottom: 10px;
  text-transform: uppercase;
  font-weight: bold;
}

.section-header p {
  color: var(--gray);
  max-width: 90%;
  margin: 0 auto;
  line-height: 1.6;
  font-size: 0.95rem;
}

/* Page Headers */
.page-header {
  background-color: var(--secondary);
  color: white;
  padding: 30px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
  z-index: 1;
}

.page-header::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background-color: rgba(204, 0, 0, 0.7);
  z-index: 3;
}

.page-header::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: 1;
}

.page-header .container {
  position: relative;
  z-index: 2;
  padding: 0 15px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.page-header h1 {
  margin: 0 0 10px 0;
  font-size: 1.8rem;
  text-transform: uppercase;
  max-width: 95%;
}

.page-header p {
  font-size: 1rem;
  max-width: 90%;
  margin: 0 auto;
}

/* Red Sponsors Bar */
.red-sponsors-bar {
  background-color: var(--primary);
  display: flex;
  align-items: center;
  overflow: hidden;
  height: 80px;
}

.sponsors-label {
  flex: 0 0 auto;
  padding: 0 30px;
  border-right: 2px solid rgba(255, 255, 255, 0.3);
  white-space: nowrap;
}

.sponsors-label h3 {
  margin: 0;
  color: white;
  font-size: 1.1rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  background: linear-gradient(
    90deg,
    rgba(255, 255, 255, 0.8) 0%,
    rgba(255, 255, 255, 1) 25%,
    rgba(255, 255, 255, 0.8) 50%,
    rgba(255, 255, 255, 1) 75%,
    rgba(255, 255, 255, 0.8) 100%
  );
  background-size: 200% auto;
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: flagWave 3s linear infinite;
}

@keyframes flagWave {
  0%   { background-position: 0% center; }
  100% { background-position: 200% center; }
}

/* Carousel track */
.sponsors-carousel {
  flex: 1;
  overflow: hidden;
  position: relative;
}

.sponsors-track {
  display: flex;
  align-items: center;
  gap: 60px;
  padding: 0 40px;
  width: max-content;
  animation: scroll-sponsors 18s linear infinite;
}

.sponsors-track:hover {
  animation-play-state: paused;
}

/* Duplicated sets keep the scroll seamless — 25% = one full set width */
@keyframes scroll-sponsors {
  0%   { transform: translateX(0); }
  100% { transform: translateX(-25%); }
}

.footer-sponsor-logo {
  width: 110px;
  height: 70px;
  display: block;
  background-color: white;
  border-radius: 6px;
  transition: all 0.3s ease;
  box-shadow: 0 2px 8px rgba(0,0,0,0.2);
  background-size: contain;
  background-repeat: no-repeat;
  background-position: center;
  overflow: hidden;
  position: relative;
  cursor: pointer;
}

.footer-sponsor-logo a {
  display: block;
  width: 100%;
  height: 100%;
  padding: 5px;
}

.footer-sponsor-logo.elliott {
  background-image: url('../images/sponsors/Elliott.png');
}

.footer-sponsor-logo.haas {
  background-image: url('../images/sponsors/haas.jpg');
}

.footer-sponsor-logo:hover {
  transform: translateY(-5px) scale(1.05);
  box-shadow: 0 8px 20px rgba(0,0,0,0.4);
  border: 2px solid rgba(255,255,255,0.8);
}

.footer-sponsor-logo.placeholder {
  border: 2px dashed rgba(255,255,255,0.3);
  background-color: rgba(255,255,255,0.1);
  background-image: none;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
}

.footer-sponsor-logo.placeholder:hover {
  border-color: rgba(255,255,255,0.8);
  background-color: rgba(255,255,255,0.2);
}

.footer-sponsor-logo.placeholder .placeholder-text {
  color: rgba(255,255,255,0.8);
  font-size: 0.7rem;
  text-align: center;
  padding: 5px;
  transition: color 0.3s ease;
}

.footer-sponsor-logo.placeholder:hover .placeholder-text {
  color: white;
}

.footer-sponsor-cta {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
}

.sponsor-btn {
  background-color: rgba(255,255,255,0.15);
  color: white;
  padding: 8px 12px;
  border-radius: 4px;
  font-size: 0.8rem;
  text-decoration: none;
  transition: all 0.3s ease;
  border: 1px solid rgba(255,255,255,0.3);
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}

.sponsor-btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
  transition: left 0.5s ease;
}

.sponsor-btn:hover {
  background-color: rgba(255,255,255,0.25);
  transform: translateY(-2px);
  border-color: rgba(255,255,255,0.6);
  box-shadow: 0 4px 12px rgba(0,0,0,0.2);
}

.sponsor-btn:hover::before {
  left: 100%;
}

/* Mobile: 768px+ */
@media (min-width: 768px) {
  .container-wide {
    padding: 0 20px;
  }

  section {
    padding: 60px 0;
  }

  .btn {
    padding: 12px 24px;
    font-size: 1rem;
  }

  header {
    height: 70px;
  }

  .logo img {
    height: 40px;
    margin-right: 10px;
  }

  .logo h1 {
    font-size: 1.5rem;
  }

  .program-toggle {
    display: block;
  }

  .menu-toggle {
    display: none;
  }

  nav {
    position: static;
    max-height: none;
    overflow: visible;
    background-color: transparent;
    border-top: none;
    box-shadow: none;
    display: block;
  }

  nav.open {
    max-height: none;
    overflow: visible;
    box-shadow: none;
  }

  nav ul {
    flex-direction: row;
    padding: 0;
  }

  nav ul li {
    margin-left: 20px;
    text-align: left;
    border-bottom: none;
  }

  nav ul li:first-child {
    margin-left: 0;
  }

  nav ul li a {
    padding: 10px 0;
    width: auto;
    font-weight: bold;
    background-color: transparent;
    position: relative;
  }

  nav ul li a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--primary);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform 0.3s ease;
  }

  nav ul li a:hover::after,
  nav ul li a.active::after {
    transform: scaleX(1);
    transform-origin: left;
  }

  nav ul li a:hover,
  nav ul li a.active {
    background-color: transparent;
    color: #ffffff;
  }

  .sub-navigation {
    padding: 15px 0;
    height: auto;
    min-height: 56px;
  }

  .sub-nav-toggle {
    display: none;
  }

  .sub-nav-tabs {
    display: flex !important;
    position: static;
    flex-direction: row;
    background-color: transparent;
    padding: 0;
    box-shadow: none;
    border-top: none;
    gap: 10px;
    align-items: center;
    width: auto;
    max-height: none;
    overflow: visible;
  }

  .sub-nav-tabs .tab-item {
    padding: 10px 20px;
    border: 1px solid rgba(255, 255, 255, 0.3);
    font-size: 0.9rem;
    border-radius: 5px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.3);
  }

  .sub-nav-tabs .tab-item:last-child {
    border-bottom: 1px solid rgba(255, 255, 255, 0.3);
  }

  .sub-nav-tabs .tab-item.active {
    box-shadow: inset 0 1px 3px rgba(0,0,0,0.2);
  }

  .section-header {
    margin-bottom: 40px;
  }

  .section-header h2 {
    font-size: 2rem;
    margin-bottom: 15px;
  }

  .section-header p {
    max-width: 700px;
    font-size: 1rem;
  }

  .page-header {
    padding: 40px 0;
  }

  .page-header h1 {
    font-size: 2.5rem;
  }

  .page-header p {
    font-size: 1.1rem;
    max-width: 800px;
  }

  .footer-sponsor-cta {
    width: auto;
    justify-content: flex-end;
  }
}

/* Desktop: 1024px+ */
@media (min-width: 1024px) {
  .container-wide {
    max-width: 1600px;
    padding: 0 30px;
  }

  .footer-sponsor-logo {
    width: 150px;
    height: 90px;
  }

  .footer-sponsor-logo.placeholder .placeholder-text {
    font-size: 0.8rem;
  }

  .sponsor-btn {
    font-size: 0.85rem;
  }
}

/* Large Desktop: 1200px+ */
@media (min-width: 1200px) {
  .page-header h1 {
    font-size: 2.8rem;
  }

  .page-header p {
    font-size: 1.2rem;
  }
}

/* TV / Presentation: 1920px+ */
@media (min-width: 1920px) {
  body {
    font-size: 18px;
  }

  header {
    height: 80px;
  }

  .header-container {
    max-width: 1800px;
  }

  .logo img {
    height: 52px;
  }

  .logo h1 {
    font-size: 1.8rem;
  }

  nav ul li a {
    font-size: 1.05rem;
    letter-spacing: 0.8px;
  }

  .container {
    max-width: 1600px;
    padding: 0 40px;
  }

  .container-wide {
    max-width: 2000px;
    padding: 0 60px;
  }

  section {
    padding: 80px 0;
  }

  .section-header h2 {
    font-size: 2.8rem;
  }

  .section-header p {
    font-size: 1.2rem;
    max-width: 900px;
  }

  .page-header {
    padding: 60px 0;
  }

  .page-header h1 {
    font-size: 3.5rem;
  }

  .page-header p {
    font-size: 1.4rem;
  }

  .btn {
    padding: 14px 30px;
    font-size: 1.1rem;
  }

  .footer-sponsor-logo {
    width: 180px;
    height: 110px;
  }
}

/* ─── Easter eggs: Aperture Science theme ────────────────────────────────────── */

/* Classified puzzle entry badge */
.classified-badge {
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.55rem;
    font-weight: 700;
    letter-spacing: 2px;
    color: rgba(204, 0, 0, 0.6);
    border: 1px solid rgba(204, 0, 0, 0.3);
    padding: 3px 8px;
    border-radius: 2px;
    cursor: pointer;
    user-select: none;
    text-transform: uppercase;
    transition: color 0.3s ease, border-color 0.3s ease, text-shadow 0.3s ease;
    animation: classified-pulse 3s ease-in-out infinite;
    white-space: nowrap;
    margin-left: 12px;
    flex-shrink: 0;
}

.classified-badge:hover {
    color: rgba(204, 0, 0, 1);
    border-color: rgba(204, 0, 0, 0.7);
    text-shadow: 0 0 8px rgba(204, 0, 0, 0.5);
}

@keyframes classified-pulse {
    0%, 100% { opacity: 0.5; }
    50% { opacity: 1; }
}

@media (max-width: 767px) {
    .classified-badge {
        display: none;
    }
}

/* Treasure hunt marks */
.hunt-mark {
    display: inline-block;
    font-size: 0.7em;
    color: rgba(204, 0, 0, 0.25);
    cursor: pointer;
    transition: color 0.3s ease, text-shadow 0.3s ease;
    vertical-align: middle;
    user-select: none;
}

.hunt-mark:hover {
    color: rgba(204, 0, 0, 0.8);
    text-shadow: 0 0 8px rgba(204, 0, 0, 0.5);
}

/* Konami code modal */
.aperture-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.85);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    animation: aperture-fadein 0.2s ease;
}

@keyframes aperture-fadein {
    from { opacity: 0; }
    to   { opacity: 1; }
}

.aperture-modal {
    background: #0a0a0a;
    border: 1px solid #f97316;
    border-radius: 4px;
    max-width: 540px;
    width: 100%;
    font-family: 'Courier New', Courier, monospace;
    box-shadow: 0 0 40px rgba(249, 115, 22, 0.25), 0 0 80px rgba(249, 115, 22, 0.1);
    animation: aperture-slidein 0.25s ease;
}

@keyframes aperture-slidein {
    from { transform: translateY(20px); opacity: 0; }
    to   { transform: translateY(0);    opacity: 1; }
}

.aperture-header {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
    border-bottom: 1px solid rgba(249, 115, 22, 0.3);
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 3px;
    color: #f97316;
    text-transform: uppercase;
}

.aperture-logo {
    font-size: 1.1rem;
    color: #f97316;
}

.aperture-close {
    margin-left: auto;
    cursor: pointer;
    opacity: 0.5;
    transition: opacity 0.15s;
    font-size: 0.9rem;
    line-height: 1;
    padding: 2px 4px;
}

.aperture-close:hover {
    opacity: 1;
}

.aperture-body {
    padding: 24px 20px 20px;
}

.aperture-speaker {
    font-size: 0.65rem;
    letter-spacing: 2px;
    color: rgba(249, 115, 22, 0.5);
    text-transform: uppercase;
    margin: 0 0 14px;
}

.aperture-quote {
    font-size: 1rem;
    color: #fcd34d;
    line-height: 1.65;
    margin: 0 0 20px;
}

.aperture-footer {
    font-size: 0.7rem;
    color: rgba(249, 115, 22, 0.35);
    letter-spacing: 1px;
    margin: 0;
    border-top: 1px solid rgba(249, 115, 22, 0.1);
    padding-top: 14px;
}

/* Idle "Are you still there?" toast */
.aperture-idle-toast {
    position: fixed;
    bottom: 24px;
    right: 24px;
    background: #0a0a0a;
    border: 1px solid rgba(249, 115, 22, 0.4);
    border-radius: 4px;
    padding: 12px 18px;
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.8rem;
    color: #f97316;
    letter-spacing: 1px;
    display: flex;
    align-items: center;
    gap: 10px;
    z-index: 9998;
    box-shadow: 0 0 20px rgba(249, 115, 22, 0.15);
    opacity: 0;
    transform: translateY(12px);
    transition: opacity 0.4s ease, transform 0.4s ease;
    pointer-events: none;
}

.aperture-idle-toast.aperture-toast-show {
    opacity: 1;
    transform: translateY(0);
}

.aperture-toast-icon {
    font-size: 1rem;
    animation: aperture-spin 4s linear infinite;
    display: inline-block;
}

@keyframes aperture-spin {
    from { transform: rotate(0deg); }
    to   { transform: rotate(360deg); }
}