/* ===== RESET & VARIABLES ===== */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --clr-bg: #0a0a12;
  --clr-surface: #12121e;
  --clr-surface-2: #1a1a2e;
  --clr-text: #e8e8f0;
  --clr-text-muted: #8888a0;
  --clr-primary: #6c5ce7;
  --clr-secondary: #00cec9;
  --clr-accent: #fd79a8;
  --clr-gold: #fdcb6e;
  --clr-gradient: linear-gradient(135deg, #6c5ce7, #00cec9);
  --clr-gradient-warm: linear-gradient(135deg, #fd79a8, #fdcb6e);
  --font-title: 'Outfit', sans-serif;
  --font-body: 'Inter', sans-serif;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 8px 32px rgba(0,0,0,.35);
  --transition: .35s cubic-bezier(.4,0,.2,1);
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: var(--font-body);
  background: var(--clr-bg);
  color: var(--clr-text);
  line-height: 1.7;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { cursor: pointer; border: none; font-family: inherit; }

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== NAV ===== */
#navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: 16px 0;
  transition: var(--transition);
}

#navbar.scrolled {
  background: rgba(10,10,18,.92);
  backdrop-filter: blur(16px);
  padding: 10px 0;
  box-shadow: 0 4px 30px rgba(0,0,0,.3);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-title);
  font-weight: 700;
  font-size: 1.25rem;
}

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

.nav-links {
  display: flex;
  list-style: none;
  gap: 32px;
}

.nav-links a {
  font-size: .9rem;
  font-weight: 500;
  position: relative;
  padding: 4px 0;
  transition: var(--transition);
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--clr-gradient);
  transition: var(--transition);
}

.nav-links a:hover::after,
.nav-links a.active::after { width: 100%; }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  padding: 6px;
}

.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--clr-text);
  border-radius: 2px;
  transition: var(--transition);
}

/* ===== HERO with SLIDER ===== */
#hero {
  position: relative;
  height: 100vh;
  min-height: 700px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero-slider {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 1.2s ease-in-out;
}

.slide.active { opacity: 1; }

.slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scale(1.02);
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    rgba(10,10,18,.2) 0%,
    rgba(10,10,18,.4) 50%,
    rgba(10,10,18,.7) 100%
  );
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 0 24px;
  animation: fadeUp .9s ease-out;
}

.hero-badge {
  display: inline-block;
  padding: 8px 24px;
  background: rgba(108,92,231,.25);
  border: 1px solid rgba(108,92,231,.4);
  border-radius: 50px;
  font-size: .9rem;
  font-weight: 500;
  color: var(--clr-secondary);
  margin-bottom: 24px;
  backdrop-filter: blur(8px);
}

.hero-title {
  font-family: var(--font-title);
  font-size: clamp(2.5rem, 6vw, 5rem);
  font-weight: 900;
  line-height: 1.1;
  margin-bottom: 16px;
  letter-spacing: -1px;
}

.hero-highlight {
  background: var(--clr-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-family: var(--font-title);
  font-size: clamp(1rem, 2.5vw, 1.5rem);
  font-weight: 300;
  color: var(--clr-text-muted);
  margin-bottom: 32px;
}

.hero-details {
  display: flex;
  justify-content: center;
  gap: 32px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.hero-detail-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 1rem;
  color: var(--clr-text-muted);
}

.detail-icon { font-size: 1.2rem; }

.hero-btn {
  display: inline-block;
  padding: 14px 40px;
  background: var(--clr-gradient);
  border-radius: 50px;
  font-weight: 600;
  font-size: 1rem;
  color: #fff;
  transition: var(--transition);
  box-shadow: 0 4px 25px rgba(108,92,231,.4);
}

.hero-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 35px rgba(108,92,231,.55);
}

/* Slider dots */
.slider-dots {
  position: absolute;
  bottom: 90px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
  display: flex;
  gap: 10px;
}

.slider-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(255,255,255,.3);
  cursor: pointer;
  transition: var(--transition);
  border: none;
}

.slider-dot.active {
  background: var(--clr-secondary);
  transform: scale(1.3);
}

.hero-scroll-indicator {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
}

.scroll-mouse {
  width: 26px;
  height: 42px;
  border: 2px solid rgba(255,255,255,.3);
  border-radius: 14px;
  display: flex;
  justify-content: center;
  padding-top: 8px;
}

.scroll-dot {
  width: 4px;
  height: 10px;
  background: var(--clr-secondary);
  border-radius: 4px;
  animation: scrollDot 1.8s ease-in-out infinite;
}

@keyframes scrollDot {
  0%, 100% { opacity: 1; transform: translateY(0); }
  50% { opacity: .3; transform: translateY(10px); }
}

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

/* ===== SECTION COMMON ===== */
section { padding: 100px 0; }

.section-header { text-align: center; margin-bottom: 60px; }

.section-tag {
  display: inline-block;
  padding: 6px 20px;
  border-radius: 30px;
  font-size: .8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2px;
  background: rgba(108,92,231,.15);
  color: var(--clr-primary);
  margin-bottom: 16px;
}

.section-title {
  font-family: var(--font-title);
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 800;
  line-height: 1.2;
}

.section-desc {
  margin-top: 12px;
  font-size: .95rem;
  color: var(--clr-text-muted);
}

.accent {
  background: var(--clr-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ===== ABOUT ===== */
#about { background: var(--clr-bg); }

.about-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
}

.about-card {
  background: var(--clr-surface);
  border: 1px solid rgba(255,255,255,.06);
  border-radius: var(--radius);
  padding: 36px 28px;
  text-align: center;
  transition: var(--transition);
}

.about-card:hover {
  transform: translateY(-6px);
  border-color: rgba(108,92,231,.3);
  box-shadow: 0 12px 40px rgba(108,92,231,.12);
}

.about-card-icon { font-size: 2.5rem; margin-bottom: 16px; }

.about-card h3 {
  font-family: var(--font-title);
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.about-card p {
  font-size: .92rem;
  color: var(--clr-text-muted);
  line-height: 1.6;
}

/* ===== CATEGORIES — Tabs + Panels ===== */
#categories { background: var(--clr-surface); }

.category-tabs {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 40px;
}

.cat-tab {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 24px 32px;
  background: var(--clr-surface-2);
  border: 2px solid rgba(255,255,255,.06);
  border-radius: var(--radius);
  color: var(--clr-text-muted);
  transition: var(--transition);
  min-width: 150px;
  position: relative;
  overflow: hidden;
}

.cat-tab::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: transparent;
  transition: var(--transition);
}

.cat-tab:hover {
  border-color: rgba(108,92,231,.3);
  color: var(--clr-text);
  transform: translateY(-4px);
}

.cat-tab.active {
  border-color: var(--clr-primary);
  color: var(--clr-text);
  background: rgba(108,92,231,.08);
  box-shadow: 0 8px 30px rgba(108,92,231,.2);
}

.cat-tab.active::before { background: var(--clr-gradient); }

.cat-tab-icon { font-size: 2rem; }

.cat-tab-label {
  font-family: var(--font-title);
  font-weight: 700;
  font-size: 1.1rem;
}

.cat-tab-age {
  font-size: .75rem;
  font-weight: 500;
  padding: 3px 12px;
  border-radius: 30px;
  background: rgba(255,255,255,.06);
}

/* === Activity Panels === */
.activity-panels { position: relative; }

.activity-panel {
  display: none;
  animation: panelFadeIn .4s ease;
}

.activity-panel.active { display: block; }

@keyframes panelFadeIn {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid rgba(255,255,255,.08);
}

.panel-header h3 {
  font-family: var(--font-title);
  font-size: 1.4rem;
  font-weight: 700;
}

.activity-count {
  padding: 6px 16px;
  border-radius: 30px;
  font-size: .8rem;
  font-weight: 600;
  background: rgba(108,92,231,.15);
  color: var(--clr-primary);
}

.activity-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 14px;
}

.activity-item {
  background: var(--clr-surface-2);
  border: 1px solid rgba(255,255,255,.05);
  border-radius: var(--radius-sm);
  padding: 20px 24px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.activity-item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--clr-gradient);
  opacity: 0;
  transition: var(--transition);
}

.activity-item:hover {
  border-color: rgba(108,92,231,.2);
  transform: translateX(4px);
  box-shadow: 0 4px 20px rgba(0,0,0,.2);
}

.activity-item:hover::before { opacity: 1; }

.activity-name {
  font-family: var(--font-title);
  font-weight: 600;
  font-size: 1rem;
  margin-bottom: 6px;
  color: var(--clr-text);
}

.activity-leader {
  font-size: .85rem;
  color: var(--clr-text-muted);
  display: flex;
  align-items: center;
  gap: 6px;
}

.activity-leader::before {
  content: '👤';
  font-size: .8rem;
}

.activity-desc {
  display: none;
  font-size: .88rem;
  color: var(--clr-text-muted);
  line-height: 1.7;
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px solid rgba(255,255,255,.06);
}

.activity-desc::before {
  content: 'Amacı: ';
  font-weight: 700;
  color: var(--clr-secondary);
}

.activity-item.expanded .activity-desc {
  display: block;
  animation: descFadeIn .3s ease;
}

@keyframes descFadeIn {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: translateY(0); }
}

.activity-item::after {
  content: '▼';
  position: absolute;
  right: 20px;
  top: 22px;
  font-size: .65rem;
  color: var(--clr-text-muted);
  transition: var(--transition);
}

.activity-item.expanded::after {
  transform: rotate(180deg);
  color: var(--clr-primary);
}

/* ===== INFO ===== */
#info { background: var(--clr-bg); }

.info-wrapper {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.info-left .section-tag { display: inline-block; margin-bottom: 16px; }
.info-left .section-title { text-align: left; margin-bottom: 40px; }

.countdown {
  display: flex;
  gap: 20px;
}

.countdown-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  background: rgba(108,92,231,.1);
  border: 1px solid rgba(108,92,231,.2);
  border-radius: var(--radius);
  padding: 20px 24px;
  min-width: 90px;
}

.countdown-num {
  font-family: var(--font-title);
  font-size: 2.2rem;
  font-weight: 800;
  background: var(--clr-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.countdown-label {
  font-size: .75rem;
  font-weight: 500;
  color: var(--clr-text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-top: 4px;
}

.info-card {
  background: var(--clr-surface);
  border: 1px solid rgba(255,255,255,.06);
  border-radius: var(--radius);
  padding: 36px;
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.info-row {
  display: flex;
  align-items: center;
  gap: 16px;
}

.info-icon {
  font-size: 1.6rem;
  width: 50px;
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(108,92,231,.12);
  border-radius: 12px;
  flex-shrink: 0;
}

.info-row strong {
  font-family: var(--font-title);
  font-size: 1rem;
  display: block;
  margin-bottom: 2px;
}

.info-row p {
  font-size: .9rem;
  color: var(--clr-text-muted);
}

/* ===== FOOTER ===== */
#footer {
  background: var(--clr-surface);
  padding: 60px 0 30px;
  border-top: 1px solid rgba(255,255,255,.06);
}

.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand { max-width: 300px; }

.footer-brand .logo-icon,
.footer-brand .logo-text {
  display: inline;
  font-family: var(--font-title);
  font-weight: 700;
}

.footer-desc {
  margin-top: 12px;
  font-size: .88rem;
  color: var(--clr-text-muted);
  line-height: 1.6;
}

.footer-links {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
}

.footer-links a {
  font-size: .9rem;
  color: var(--clr-text-muted);
  transition: var(--transition);
}

.footer-links a:hover { color: var(--clr-primary); }

.footer-hashtag {
  font-family: var(--font-title);
  font-weight: 600;
  font-size: 1rem;
  background: var(--clr-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.footer-bottom {
  text-align: center;
  padding-top: 24px;
  border-top: 1px solid rgba(255,255,255,.06);
}

.footer-bottom p {
  font-size: .8rem;
  color: var(--clr-text-muted);
}

/* ===== ANIMATIONS ===== */
[data-animate] {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity .7s ease, transform .7s ease;
}

[data-animate].visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 992px) {
  .info-wrapper { grid-template-columns: 1fr; gap: 40px; }
  .info-left .section-title { text-align: center; }
  .countdown { justify-content: center; }
  .activity-list { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: var(--clr-surface);
    flex-direction: column;
    padding: 100px 40px 40px;
    gap: 20px;
    transition: var(--transition);
    box-shadow: -8px 0 30px rgba(0,0,0,.3);
  }

  .nav-links.open { right: 0; }
  .nav-toggle { display: flex; }

  .nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }
  .nav-toggle.active span:nth-child(2) { opacity: 0; }
  .nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
  }

  .cat-tab {
    min-width: 120px;
    padding: 18px 20px;
  }

  .cat-tab-icon { font-size: 1.5rem; }
  .cat-tab-label { font-size: .95rem; }

  .countdown { flex-wrap: wrap; }
  .countdown-item { min-width: 70px; padding: 16px 18px; }
  .countdown-num { font-size: 1.6rem; }
  .hero-details { flex-direction: column; gap: 12px; }
}

@media (max-width: 480px) {
  .hero-title { font-size: 2rem; }
  .hero-subtitle { font-size: .95rem; }
  section { padding: 60px 0; }
  .section-title { font-size: 1.6rem; }
  .category-tabs { gap: 8px; }
  .cat-tab { min-width: 70px; padding: 14px 12px; }
  .cat-tab-label { font-size: .8rem; }
  .cat-tab-age { font-size: .65rem; padding: 2px 8px; }
}