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

body {
  font-family: system-ui, -apple-system, sans-serif;
  color: #1a1a2e;
  background: #f5f5f7;
  line-height: 1.6;
}

nav {
  background: #1a1a2e;
  padding: 1rem 2rem;
  display: flex;
  align-items: center;
  gap: 2rem;
}

nav .logo {
  color: #e94560;
  font-weight: 700;
  font-size: 1.25rem;
  text-decoration: none;
}

nav a {
  color: #ccc;
  text-decoration: none;
  font-size: 0.95rem;
  transition: color 0.2s;
}

nav a:hover, nav a.active { color: #fff; }

.hero {
  background: linear-gradient(135deg, #1a1a2e 0%, #16213e 60%, #0f3460 100%);
  color: #fff;
  padding: 5rem 2rem;
  text-align: center;
}

.hero h1 { font-size: 2.8rem; margin-bottom: 1rem; }
.hero p  { font-size: 1.1rem; color: #aac; max-width: 560px; margin: 0 auto 2rem; }

.btn {
  display: inline-block;
  padding: 0.75rem 1.75rem;
  border-radius: 6px;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  border: none;
  font-size: 1rem;
  transition: opacity 0.2s;
}

.btn:hover { opacity: 0.85; }
.btn-primary { background: #e94560; color: #fff; }
.btn-secondary { background: transparent; color: #e94560; border: 2px solid #e94560; }

.container { max-width: 1000px; margin: 0 auto; padding: 3rem 2rem; }

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

.card {
  background: #fff;
  border-radius: 10px;
  padding: 1.75rem;
  box-shadow: 0 2px 8px rgba(0,0,0,0.07);
}

.card h3 { margin-bottom: 0.5rem; color: #0f3460; }
.card p  { color: #555; font-size: 0.95rem; margin-bottom: 1rem; }

h2 { font-size: 1.8rem; margin-bottom: 0.5rem; }
.subtitle { color: #666; margin-bottom: 2rem; }

.team { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1.5rem; }

.member {
  background: #fff;
  border-radius: 10px;
  padding: 1.5rem;
  text-align: center;
  box-shadow: 0 2px 8px rgba(0,0,0,0.07);
}

.avatar {
  width: 64px; height: 64px;
  border-radius: 50%;
  background: #0f3460;
  color: #fff;
  font-size: 1.5rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 0.75rem;
}

form { display: flex; flex-direction: column; gap: 1rem; max-width: 520px; }

label { font-size: 0.9rem; font-weight: 600; color: #333; }

input, textarea {
  padding: 0.65rem 0.9rem;
  border: 1px solid #ccc;
  border-radius: 6px;
  font-size: 1rem;
  font-family: inherit;
  transition: border-color 0.2s;
}

input:focus, textarea:focus { outline: none; border-color: #0f3460; }
textarea { resize: vertical; min-height: 100px; }

.hidden { display: none !important; }

.success-msg {
  background: #d4edda;
  color: #155724;
  border: 1px solid #c3e6cb;
  border-radius: 6px;
  padding: 0.9rem 1.2rem;
  margin-top: 0.5rem;
}

/* ── Ad banner ─────────────────────────────────────────────────── */
.ad-banner {
  display: flex;
  align-items: center;
  gap: 1rem;
  background: #0f3460;
  color: #fff;
  padding: .75rem 2rem;
  position: relative;
  animation: fadeIn .4s ease;
}

@keyframes fadeIn { from { opacity: 0; transform: translateY(-6px); } to { opacity: 1; transform: none; } }

.ad-banner .ad-badge {
  font-size: .65rem;
  font-weight: 700;
  letter-spacing: .06em;
  background: #e94560;
  color: #fff;
  padding: .15rem .45rem;
  border-radius: 3px;
  flex-shrink: 0;
}

.ad-banner .ad-image,
.ad-banner .ad-video {
  width: 56px;
  height: 56px;
  border-radius: 6px;
  object-fit: cover;
  flex-shrink: 0;
}

.ad-banner .ad-text { flex: 1; }
.ad-banner .ad-text strong { display: block; font-size: .95rem; }
.ad-banner .ad-text span { font-size: .82rem; color: #aac; }

.ad-banner .ad-cta {
  font-size: .82rem;
  font-weight: 600;
  color: #fff;
  border: 1px solid rgba(255,255,255,.4);
  padding: .35rem .8rem;
  border-radius: 4px;
  text-decoration: none;
  white-space: nowrap;
  flex-shrink: 0;
  transition: background .2s;
}

.ad-banner .ad-cta:hover { background: rgba(255,255,255,.1); }

.ad-banner .ad-close {
  background: none;
  border: none;
  color: #aac;
  font-size: 1.1rem;
  cursor: pointer;
  padding: .2rem .4rem;
  flex-shrink: 0;
}

footer {
  text-align: center;
  padding: 2rem;
  color: #888;
  font-size: 0.85rem;
  border-top: 1px solid #e0e0e0;
}

.nav-user { display: flex; align-items: center; gap: .75rem; }
.nav-username { color: #fff; font-size: .95rem; }
.nav-logout-btn {
  background: transparent;
  border: 1px solid rgba(255,255,255,.4);
  color: #ccc;
  font-size: .8rem;
  padding: .2rem .6rem;
  border-radius: 4px;
  cursor: pointer;
  transition: color .2s, border-color .2s;
}
.nav-logout-btn:hover { color: #fff; border-color: #fff; }