:root {
  --bg: #0a0b10;
  --bg-alt: #0f1118;
  --surface: #14161f;
  --surface-2: #191c27;
  --border: #262a38;
  --text: #eef0f6;
  --text-muted: #9a9db3;
  --accent: #7c5cff;
  --accent-2: #4fd1ff;
  --accent-gradient: linear-gradient(135deg, #7c5cff 0%, #4fd1ff 100%);
  --radius: 16px;
  --shadow: 0 20px 60px rgba(0,0,0,0.45);
  --container: 1160px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 {
  font-family: 'Space Grotesk', 'Inter', sans-serif;
  line-height: 1.15;
  margin: 0 0 0.5em;
  letter-spacing: -0.02em;
}

p { margin: 0 0 1em; color: var(--text-muted); }

a { color: inherit; text-decoration: none; }

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

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

/* Background glow */
.bg-glow {
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(600px circle at 15% 10%, rgba(124,92,255,0.18), transparent 60%),
    radial-gradient(500px circle at 85% 25%, rgba(79,209,255,0.12), transparent 60%),
    var(--bg);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease, border-color 0.2s ease;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-2px); }

.btn-primary {
  background: var(--accent-gradient);
  color: #fff;
  box-shadow: 0 10px 30px rgba(124,92,255,0.35);
}
.btn-primary:hover { box-shadow: 0 14px 34px rgba(124,92,255,0.5); }

.btn-ghost {
  background: transparent;
  border-color: var(--border);
  color: var(--text);
}
.btn-ghost:hover { border-color: var(--accent); }

.btn-light {
  background: #fff;
  color: #0a0b10;
}

.btn-sm { padding: 10px 20px; font-size: 0.85rem; }
.btn-block { width: 100%; }

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(14px);
  background: rgba(10,11,16,0.7);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
}

.logo {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 1.2rem;
  display: flex;
  align-items: center;
  gap: 6px;
}
.logo-mark { color: var(--accent); }
.logo-accent {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.nav {
  display: flex;
  gap: 32px;
}
.nav a {
  color: var(--text-muted);
  font-size: 0.95rem;
  font-weight: 500;
  transition: color 0.2s ease;
}
.nav a:hover { color: var(--text); }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.nav-toggle span {
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

/* Hero */
.hero {
  padding: 120px 0 80px;
  text-align: center;
}
.hero-inner { max-width: 780px; }
.eyebrow {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent-2);
  background: rgba(79,209,255,0.08);
  border: 1px solid rgba(79,209,255,0.25);
  padding: 6px 16px;
  border-radius: 999px;
  margin-bottom: 20px;
}
.hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.6rem);
  margin-bottom: 20px;
}
.text-gradient {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-sub {
  font-size: 1.1rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}
.hero-actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin: 32px 0 40px;
  flex-wrap: wrap;
}

.eyebrow-live {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.live-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #ff5c7c;
  box-shadow: 0 0 0 rgba(255,92,124,0.5);
  animation: pulse 1.8s infinite;
}
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(255,92,124,0.5); }
  70% { box-shadow: 0 0 0 8px rgba(255,92,124,0); }
  100% { box-shadow: 0 0 0 0 rgba(255,92,124,0); }
}

.event-meta {
  display: flex;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
  font-size: 0.95rem;
  color: var(--text);
  margin-bottom: 8px;
}

/* Countdown */
.countdown {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin: 48px auto 8px;
}
.countdown-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  min-width: 84px;
  padding: 16px 12px;
  text-align: center;
}
.countdown-num {
  display: block;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 2rem;
  font-weight: 700;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.countdown-label {
  font-size: 0.75rem;
  color: var(--text-muted);
}
.countdown-sep {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--text-muted);
}
.countdown-note {
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 40px;
}
.countdown.is-over .countdown-item { opacity: 0.5; }

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  max-width: 700px;
  margin: 0 auto;
}
.stat { text-align: center; }
.stat-num {
  display: block;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--text);
}
.stat-label {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* Trust */
.trust { padding: 32px 0 64px; }
.trust-label {
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 20px;
}
.trust-logos {
  display: flex;
  justify-content: center;
  gap: 40px;
  flex-wrap: wrap;
  opacity: 0.6;
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 600;
  letter-spacing: 0.02em;
}

/* Sections */
.section { padding: 96px 0; }
.section-alt { background: var(--bg-alt); }
.section-head {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 56px;
}
.section-sub { font-size: 1.05rem; }

/* Grid */
.grid { display: grid; gap: 28px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }

/* Cards */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  transition: transform 0.25s ease, border-color 0.25s ease;
}
.card:hover {
  transform: translateY(-4px);
  border-color: rgba(124,92,255,0.4);
}
.card-icon {
  font-size: 1.8rem;
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 14px;
  background: rgba(124,92,255,0.12);
  margin-bottom: 20px;
}
.card h3 { font-size: 1.15rem; margin-bottom: 10px; }
.card p { margin: 0; font-size: 0.95rem; }

/* About */
.about-inner {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 64px;
  align-items: center;
}
.about-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 48px 32px;
  text-align: center;
  box-shadow: var(--shadow);
}
.about-avatar {
  width: 96px;
  height: 96px;
  border-radius: 50%;
  background: var(--accent-gradient);
  color: #fff;
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 1.6rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
}
.about-name { color: var(--text); font-weight: 700; margin: 0; font-size: 1.1rem; }
.about-role { color: var(--text-muted); font-size: 0.9rem; margin: 4px 0 0; }
.about-list {
  list-style: none;
  padding: 0;
  margin: 0 0 28px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* Project cards */
.project-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform 0.25s ease, border-color 0.25s ease;
}
.project-card:hover {
  transform: translateY(-4px);
  border-color: rgba(79,209,255,0.4);
}
.project-thumb {
  height: 160px;
  background: var(--accent-gradient);
}
.thumb-1 { background: linear-gradient(135deg, #7c5cff, #ff6b9d); }
.thumb-2 { background: linear-gradient(135deg, #4fd1ff, #7c5cff); }
.thumb-3 { background: linear-gradient(135deg, #34d399, #4fd1ff); }
.project-body { padding: 24px; }
.tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent-2);
  background: rgba(79,209,255,0.1);
  padding: 4px 12px;
  border-radius: 999px;
  margin-bottom: 12px;
}
.project-body h3 { font-size: 1.1rem; margin-bottom: 8px; }
.project-body p { font-size: 0.9rem; margin: 0; }

/* Testimonials */
.testimonial {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
}
.testimonial p {
  font-size: 0.98rem;
  color: var(--text);
  margin-bottom: 24px;
}
.testimonial-author {
  display: flex;
  align-items: center;
  gap: 12px;
}
.avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--surface-2);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--accent-2);
}
.author-name { margin: 0; font-size: 0.9rem; font-weight: 600; color: var(--text); }
.author-role { margin: 0; font-size: 0.8rem; }

/* CTA Banner */
.cta-banner {
  background: var(--accent-gradient);
  padding: 72px 0;
}
.cta-inner {
  text-align: center;
  max-width: 620px;
}
.cta-inner h2 { color: #fff; }
.cta-inner p { color: rgba(255,255,255,0.85); }

/* Contact */
.contact-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
}
.contact-list {
  list-style: none;
  padding: 0;
  margin: 24px 0;
  display: flex;
  flex-direction: column;
  gap: 14px;
  color: var(--text-muted);
}
.contact-list li { display: flex; align-items: center; gap: 10px; }

.socials { display: flex; gap: 12px; }
.socials a {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text-muted);
  transition: border-color 0.2s ease, color 0.2s ease;
}
.socials a:hover { border-color: var(--accent); color: var(--text); }

.contact-form {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.form-field { margin-bottom: 18px; }
.form-field label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text);
}
.form-field input,
.form-field textarea {
  width: 100%;
  padding: 12px 14px;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text);
  font-family: inherit;
  font-size: 0.95rem;
  resize: vertical;
  transition: border-color 0.2s ease;
}
.form-field input:focus,
.form-field textarea:focus {
  outline: none;
  border-color: var(--accent);
}
.form-note {
  margin: 14px 0 0;
  font-size: 0.85rem;
  text-align: center;
  min-height: 1.2em;
}
.form-note.success { color: #34d399; }
.form-note.error { color: #f87171; }

/* Checkbox / KVKK */
.checkbox-field { margin-bottom: 22px; }
.checkbox-label {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.85rem;
  color: var(--text-muted);
  cursor: pointer;
}
.checkbox-label input[type="checkbox"] {
  width: 18px;
  height: 18px;
  margin-top: 2px;
  flex-shrink: 0;
  accent-color: var(--accent);
}
.checkbox-label a { color: var(--accent-2); text-decoration: underline; }

.kvkk-section h3 {
  font-size: 1.2rem;
  margin-bottom: 16px;
}
.kvkk-section p {
  max-width: 760px;
  font-size: 0.9rem;
}

/* Agenda */
.agenda {
  max-width: 640px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.agenda-item {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 18px 20px;
  border-bottom: 1px solid var(--border);
}
.agenda-item:last-child { border-bottom: none; }
.agenda-time {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  color: var(--accent-2);
  min-width: 60px;
}
.agenda-text { color: var(--text); }

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 32px 0;
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}
.footer-copy { margin: 0; font-size: 0.85rem; }

/* Reveal animation */
[data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
[data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Responsive */
@media (max-width: 900px) {
  .about-inner, .contact-inner {
    grid-template-columns: 1fr;
  }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .hero-stats { grid-template-columns: repeat(2, 1fr); row-gap: 32px; }
}

.nav-cta-mobile { display: none; }

@media (max-width: 720px) {
  .nav, .nav-cta { display: none; }
  .nav-toggle { display: flex; }
  .header-inner.nav-open .nav {
    display: flex;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    background: var(--bg-alt);
    border-bottom: 1px solid var(--border);
    padding: 20px 24px;
    gap: 18px;
  }
  .header-inner.nav-open .nav-cta-mobile {
    display: inline-flex;
    align-self: flex-start;
    margin-top: 6px;
  }
  .grid-3 { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .trust-logos { gap: 24px; font-size: 0.9rem; }
  .countdown { gap: 8px; }
  .countdown-item { min-width: 64px; padding: 12px 8px; }
  .countdown-num { font-size: 1.4rem; }
  .event-meta { flex-direction: column; gap: 6px; }
  .agenda-item { gap: 12px; padding: 14px; }
}