/*--------------------------------------------------------------*/
/* Chamber Section Styles */
/*--------------------------------------------------------------*/
.chamber-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--space-8);
  margin-top: var(--space-8);
}

.chamber-card {
  background: var(--surface);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-1);
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  align-items: center;
  transition: box-shadow 0.3s, transform 0.3s, border-color 0.3s;
  min-height: 340px;
}
.chamber-card:hover {
  border-color: var(--accent-2);
  box-shadow: var(--shadow-2);
  transform: translateY(-6px) scale(1.03);
}
.chamber-card img {
  width: 110px;
  height: auto;
  margin-bottom: var(--space-5);
  border-radius: var(--radius-sm);
  box-shadow: 0 4px 16px rgba(255,51,51,0.2);
  background: #fff;
}
.chamber-desc {
  color: var(--muted);
  font-size: var(--fs-400);
  line-height: 1.7;
  margin-top: var(--space-4);
  text-align: left;
}
.chamber-card:focus-within, .chamber-card:active {
  outline: none;
  box-shadow: var(--ring);
  border-color: var(--accent);
}
.chamber-card {
  cursor: pointer;
}
.chamber-card img {
  outline: none;
}
.chamber-card img:focus {
  box-shadow: var(--ring);
}
.chamber-card {
  transition: box-shadow 0.3s, transform 0.3s, border-color 0.3s;
}
.chamber-card h3 {
  color: var(--accent);
  font-size: var(--fs-500);
  margin-bottom: var(--space-3);
}
.chamber-card:last-child .chamber-desc {
  color: var(--accent-2);
}
/*
  YFYD — Youth For Youth Development
  Premium, modern, accessible CSS for a flagship event site.
  Tech: Pure CSS (no frameworks). Mobile-first, responsive.
*/

/*--------------------------------------------------------------
  CSS Reset & Base
--------------------------------------------------------------*/
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

:root {
  /* Color system - Reddish Theme */
  --bg: #1a0505;               /* deep dark red background */
  --surface: #2d0f0f;          /* elevated red surface */
  --text: #ffe6e6;             /* light pinkish text */
  --muted: #d8b5b5;            /* muted red text */
  --accent: #ff3333;           /* vibrant red accent */
  --accent-2: #ff6b35;         /* orange-red accent */
  --border: #4d1a1a;           /* dark red borders */

  /* Typography */
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Ubuntu, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
  --leading: 1.6;
  --fs-900: clamp(2rem, 4.5vw, 4rem);
  --fs-700: clamp(1.5rem, 2.8vw, 2.4rem);
  --fs-600: clamp(1.25rem, 2vw, 1.6rem);
  --fs-500: 1.125rem;
  --fs-400: 1rem;
  --fs-300: 0.95rem;

  /* Spacing */
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-8: 3rem;
  --space-12: 5rem;

  /* Effects */
  --radius: 14px;
  --radius-sm: 10px;
  --shadow-1: 0 10px 30px rgba(0,0,0,0.35);
  --shadow-2: 0 20px 40px rgba(0,0,0,0.35);
  --ring: 0 0 0 3px color-mix(in oklab, var(--accent), white 25%);
}

body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--text);
  background: var(--bg);
  line-height: var(--leading);
  text-rendering: optimizeLegibility;
}

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

.container {
  width: min(1120px, 92vw);
  margin-inline: auto;
}

.narrow { width: min(820px, 92vw); }

.section { position: relative; }
.section-pad { padding: var(--space-12) 0; }
.section-lead { color: var(--muted); font-size: var(--fs-500); }

.alt { background: linear-gradient(180deg, var(--surface), transparent 40%);
       border-top: 1px solid var(--border);
       border-bottom: 1px solid var(--border); }

/*--------------------------------------------------------------
  Accessibility helpers
--------------------------------------------------------------*/
.skip-link {
  position: absolute; left: -9999px; top: -9999px;
}
.skip-link:focus {
  left: var(--space-4); top: var(--space-4); background: var(--accent);
  color: #000; padding: var(--space-3) var(--space-4); border-radius: var(--radius-sm);
}

:focus-visible { outline: none; box-shadow: var(--ring); border-radius: 8px; }

/*--------------------------------------------------------------
  Header & Nav
--------------------------------------------------------------*/
.site-header {
  position: sticky; top: 0; z-index: 1000;
  background: linear-gradient(135deg, rgba(26, 5, 5, 0.98) 0%, rgba(45, 15, 15, 0.96) 50%, rgba(35, 10, 10, 0.97) 100%);
  backdrop-filter: blur(15px);
  border-bottom: 1px solid rgba(255, 51, 51, 0.4);
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.7), 0 4px 40px rgba(255, 51, 51, 0.15);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; padding: var(--space-4) 0; }

.brand { display: inline-flex; align-items: center; gap: var(--space-4); color: #ffffff; text-decoration: none; }
.brand-logo { 
  height: 50px; 
  width: auto; 
  object-fit: contain;
  filter: drop-shadow(0 2px 8px rgba(255, 255, 255, 0.3)) drop-shadow(0 0 12px rgba(255, 51, 51, 0.4)) brightness(1.1);
  transition: filter 0.3s ease;
}
.brand-logo:hover {
  filter: drop-shadow(0 2px 10px rgba(255, 255, 255, 0.5)) drop-shadow(0 0 18px rgba(255, 51, 51, 0.6)) brightness(1.2);
}
.brand-mark { font-weight: 800; letter-spacing: 1px; }
.brand-text { color: #f7fafc; font-size: var(--fs-300); }

.site-nav ul { display: flex; gap: var(--space-5); list-style: none; margin: 0; padding: 0; }
.site-nav a { color: #ffffff; text-decoration: none; font-size: var(--fs-400); position: relative; }
.site-nav a::after { content: ""; position: absolute; left: 0; bottom: -6px; width: 0; height: 2px; background: var(--accent);
  transition: width 240ms ease; }
.site-nav a:hover::after, .site-nav a[aria-current="page"]::after { width: 100%; }

.nav-toggle { display: none; background: transparent; border: 1px solid rgba(255, 255, 255, 0.3); padding: var(--space-3); border-radius: 10px; cursor: pointer; }
.nav-toggle-bar { display: block; width: 22px; height: 2px; background: #ffffff; margin: 4px 0; 
  transition: transform 260ms ease, opacity 260ms ease; }

@media (max-width: 840px) {
  .nav-toggle { display: inline-flex; flex-direction: column; }
  .site-nav { 
    position: fixed; 
    inset: 60px 0 auto 0; 
    background: 
      linear-gradient(135deg, 
        rgba(26, 5, 5, 0.97) 0%, 
        rgba(45, 15, 15, 0.95) 50%, 
        rgba(26, 5, 5, 0.97) 100%);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 51, 51, 0.35);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
    transform: translateY(-100%); 
    transition: transform 260ms ease; 
    z-index: 999; 
    visibility: hidden; 
    opacity: 0;
  }
  .site-nav.open { transform: translateY(0); visibility: visible; opacity: 1; }
  .site-nav ul { flex-direction: column; gap: var(--space-4); padding: var(--space-5); }
  .site-nav a { 
    color: var(--text);
    background: linear-gradient(135deg, 
      rgba(255, 51, 51, 0.08) 0%, 
      rgba(255, 107, 53, 0.05) 100%);
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius-sm);
    border: 1px solid rgba(255, 51, 51, 0.15);
    display: block;
    transition: all 240ms ease;
    font-weight: 500;
  }
  .site-nav a:hover {
    background: linear-gradient(135deg, 
      rgba(255, 51, 51, 0.18) 0%, 
      rgba(255, 107, 53, 0.12) 100%);
    border-color: rgba(255, 51, 51, 0.35);
    transform: translateX(4px);
    box-shadow: 0 4px 12px rgba(255, 51, 51, 0.25);
  }
  
  /* Hamburger to X animation */
  .nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) { 
    transform: translateY(10px) rotate(45deg); 
  }
  .nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) { 
    opacity: 0; 
  }
  .nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) { 
    transform: translateY(-10px) rotate(-45deg); 
  }
  
  /* Improve brand layout on mobile */
  .brand { gap: var(--space-3); }
  .brand-text { display: none; }
  .brand-logo { height: 40px; }
  
  /* Fix header height */
  .header-inner { min-height: 60px; }
}

/*--------------------------------------------------------------
  Hero
--------------------------------------------------------------*/
.hero { padding: var(--space-12) 0 var(--space-8); overflow: clip; }
.hero-bg { position: absolute; inset: 0; z-index: -1;
  background:
    radial-gradient(1200px 600px at 85% -20%, color-mix(in oklab, var(--accent), white 12%), transparent 55%),
    radial-gradient(900px 450px at -10% 20%, color-mix(in oklab, var(--accent-2), white 15%), transparent 60%),
    linear-gradient(180deg, #1a0505, #1a0505);
}
.hero-inner { text-align: left; }
.hero-title { 
  font-size: var(--fs-900); 
  font-weight: 900;
  letter-spacing: 8px;
  margin: 0 0 var(--space-4);
  background: linear-gradient(135deg, #ffffff 0%, #fafafa 15%, #f0f0f0 30%, #faf0e6 45%, #e6e6e6 60%, #dc3232 75%, #e63232 85%, #d22828 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-transform: uppercase;
  filter: drop-shadow(0 0 20px rgba(220, 50, 50, 0.5)) drop-shadow(0 4px 8px rgba(0, 0, 0, 0.8));
}
.hero-event-name { 
  font-size: clamp(3rem, 7vw, 6rem);
  font-weight: 900;
  letter-spacing: 6px;
  background: linear-gradient(90deg, var(--accent) 0%, var(--accent-2) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin: 0 0 var(--space-5);
  text-transform: uppercase;
  line-height: 1.1;
}
.hero-sub { color: var(--muted); font-size: var(--fs-500); margin-bottom: var(--space-6); }
.hero-ctas { display: flex; gap: var(--space-4); flex-wrap: wrap; }

/*--------------------------------------------------------------
  Buttons
--------------------------------------------------------------*/
.button { display: inline-flex; align-items: center; justify-content: center; text-decoration: none; cursor: pointer;
  font-weight: 650; border-radius: 999px; padding: 0.8rem 1.3rem; border: 1px solid var(--border); transition: transform 160ms ease, box-shadow 160ms ease, background 160ms ease; }
.button:hover { transform: translateY(-1px); box-shadow: var(--shadow-1); }
.button:active { transform: translateY(0); box-shadow: none; }

.button-primary { background: var(--accent); color: #1a0505; border-color: color-mix(in oklab, var(--accent), #000 20%); }
.button-primary:hover { background: color-mix(in oklab, var(--accent), white 10%); }

.button-outline { background: transparent; color: var(--text); border-color: var(--accent-2); }
.button-outline:hover { background: color-mix(in oklab, var(--accent-2), #000 85%); }

.cta-inline { margin-top: var(--space-5); }

/*--------------------------------------------------------------
  Grid & Cards
--------------------------------------------------------------*/
.grid-2 { display: grid; grid-template-columns: 1.2fr 0.8fr; gap: var(--space-8); align-items: start; }
@media (max-width: 960px) { .grid-2 { grid-template-columns: 1fr; } }

.feature-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow-1); padding: var(--space-6); }
.feature-list { display: grid; gap: var(--space-5); }
.feature-item { display: grid; grid-template-columns: 28px 1fr; align-items: start; gap: var(--space-4); }
.feature-icon { color: var(--accent-2); font-size: 1.1rem; }

/*--------------------------------------------------------------
  About / Vision / Mission sections
--------------------------------------------------------------*/
.section h2 { font-size: var(--fs-700); margin: 0 0 var(--space-4); }
.section p { font-size: var(--fs-400); color: var(--muted); }

.mission-list {
  list-style: none;
  padding: 0;
  margin: var(--space-5) 0 0;
}

.mission-list li {
  padding: var(--space-4);
  margin-bottom: var(--space-4);
  background: rgba(255, 51, 51, 0.08);
  border-left: 4px solid var(--accent);
  border-radius: var(--radius-sm);
  color: var(--muted);
  font-size: var(--fs-400);
  line-height: 1.7;
}

.mission-list li::before {
  content: "▸";
  color: var(--accent);
  font-weight: bold;
  margin-right: var(--space-3);
}

/*--------------------------------------------------------------
  Sponsors
--------------------------------------------------------------*/
.sponsor-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-6); margin-top: var(--space-6); }
@media (max-width: 1024px) { .sponsor-grid { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 720px) { .sponsor-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 480px) { .sponsor-grid { grid-template-columns: 1fr; } }

.sponsor-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow-1); padding: var(--space-5); display: grid; gap: var(--space-4); }
.logo-placeholder { display: grid; place-items: center; height: 84px; border: 1px dashed var(--border); border-radius: var(--radius-sm); color: var(--muted); font-weight: 700; letter-spacing: 1px; }
.sponsor-meta h3 { margin: 0 0 6px; font-size: var(--fs-500); }
.sponsor-meta p { margin: 0; }

/*--------------------------------------------------------------
  Contact
--------------------------------------------------------------*/
.contact-details { list-style: none; padding: 0; margin: var(--space-5) 0 0; color: var(--muted); }
.contact-details li { margin-bottom: var(--space-3); }

/*--------------------------------------------------------------
  Event Showcase
--------------------------------------------------------------*/
.event-showcase {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 500px;
  background: linear-gradient(135deg, rgba(255, 51, 51, 0.12) 0%, rgba(255, 107, 53, 0.1) 100%);
  border: 2px solid var(--border);
  border-radius: var(--radius);
  position: relative;
  overflow: hidden;
}

.event-showcase::before {
  content: "";
  position: absolute;
  top: -50%;
  right: -50%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(255, 51, 51, 0.18) 0%, transparent 70%);
  border-radius: 50%;
  animation: float 8s ease-in-out infinite;
}

.event-showcase::after {
  content: "";
  position: absolute;
  bottom: -30%;
  left: -30%;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(255, 107, 53, 0.15) 0%, transparent 70%);
  border-radius: 50%;
  animation: float 10s ease-in-out infinite reverse;
}

@keyframes float {
  0%, 100% { transform: translateY(0px) translateX(0px); }
  50% { transform: translateY(-20px) translateX(15px); }
}

.event-name-wrapper {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: var(--space-8);
  max-width: 600px;
}

.event-name {
  font-size: clamp(3.5rem, 8vw, 7rem);
  font-weight: 900;
  letter-spacing: 8px;
  background: linear-gradient(90deg, var(--accent) 0%, var(--accent-2) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin: 0 0 var(--space-4) 0;
  text-transform: uppercase;
  line-height: 1.1;
  animation: slide-up 800ms ease-out;
}

@keyframes slide-up {
  from {
    opacity: 0;
    transform: translateY(40px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.event-tagline {
  font-size: var(--fs-600);
  color: var(--accent);
  font-weight: 600;
  letter-spacing: 2px;
  margin-bottom: var(--space-5);
  text-transform: uppercase;
  opacity: 0.95;
}

@media (max-width: 768px) {
  .event-showcase {
    min-height: 400px;
  }
  
  .event-name {
    letter-spacing: 4px;
  }
  
  .event-name-wrapper {
    padding: var(--space-6);
  }
}

/*--------------------------------------------------------------
  IMPERIUM Page Styles
--------------------------------------------------------------*/
.rounds-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-6);
  margin: var(--space-8) 0;
}

.round-card {
  background: rgba(255, 51, 51, 0.08);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--space-6);
  transition: all 300ms ease;
}

.round-card:hover {
  border-color: var(--accent-2);
  transform: translateY(-5px);
  box-shadow: 0 10px 30px rgba(255, 51, 51, 0.25);
}

.round-number {
  display: inline-block;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-2) 100%);
  color: #1a0505;
  padding: var(--space-2) var(--space-4);
  border-radius: 20px;
  font-weight: 700;
  font-size: 0.85rem;
  margin-bottom: var(--space-4);
}

.round-card h3 {
  color: var(--text);
  margin: var(--space-4) 0 var(--space-3) 0;
  font-size: var(--fs-600);
}

.round-card p {
  color: var(--muted);
  margin: 0;
  line-height: 1.7;
}

.prizes-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--space-6);
  margin: var(--space-8) 0;
}

.prize-card {
  background: linear-gradient(135deg, rgba(255, 107, 53, 0.12) 0%, rgba(255, 51, 51, 0.08) 100%);
  border: 2px solid var(--border);
  border-radius: var(--radius);
  padding: var(--space-6);
  text-align: center;
  transition: all 300ms ease;
  position: relative;
  overflow: hidden;
}

.prize-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--accent) 0%, var(--accent-2) 100%);
}

.prize-card:hover {
  border-color: var(--accent);
  transform: translateY(-8px);
  box-shadow: 0 15px 40px rgba(255, 51, 51, 0.3);
}

.prize-rank {
  display: inline-block;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-2) 100%);
  color: #1a0505;
  padding: var(--space-2) var(--space-4);
  border-radius: 20px;
  font-weight: 700;
  font-size: 0.8rem;
  margin-bottom: var(--space-3);
}

.prize-card h3 {
  color: var(--text);
  margin: var(--space-3) 0 var(--space-4) 0;
  font-size: var(--fs-600);
}

.prize-amount {
  color: var(--accent);
  font-weight: 700;
  font-size: var(--fs-600);
  margin: var(--space-4) 0;
}

.prize-card p {
  color: var(--muted);
  margin: 0;
  font-size: var(--fs-300);
  line-height: 1.6;
}

.feature-list {
  list-style: none;
  padding: 0;
  margin: var(--space-4) 0;
}

.feature-list li {
  padding: var(--space-3) 0;
  color: var(--muted);
  font-size: var(--fs-500);
}

.cta-section {
  text-align: center;
}

.cta-section h2 {
  color: var(--text);
  margin-bottom: var(--space-4);
}

.cta-section p {
  color: var(--muted);
  font-size: var(--fs-500);
  margin-bottom: var(--space-6);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

@media (max-width: 768px) {
  .rounds-grid,
  .criteria-list,
  .prizes-grid {
    grid-template-columns: 1fr;
  }
  
  .round-card,
  .prize-card {
    padding: var(--space-4);
  }
}

/*--------------------------------------------------------------
  Footer
--------------------------------------------------------------*/
.site-footer { border-top: 1px solid var(--border); padding: var(--space-6) 0; background: linear-gradient(180deg, transparent, #0a0f22); }
.footer-inner { display: flex; align-items: center; justify-content: space-between; gap: var(--space-4); }
.footer-nav a { color: var(--muted); text-decoration: none; margin-left: var(--space-4); }
.footer-nav a:hover { color: var(--text); }
@media (max-width: 720px) { .footer-inner { flex-direction: column; align-items: flex-start; } }

/*--------------------------------------------------------------
  Animations & Motion
--------------------------------------------------------------*/
[data-animate] { opacity: 0; transform: translateY(16px); will-change: transform, opacity; }
[data-animate].in-view { opacity: 1; transform: none; transition: opacity 480ms ease, transform 480ms ease; }

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .site-nav a::after { transition: none; }
  .button { transition: none; }
  [data-animate] { transition: none; }
}