/* ===== achievements.css — плавные переходы + чистый код ===== */
body {
  margin: 0; padding: 0;
  font-family: "Poppins", Arial, sans-serif;
  background: linear-gradient(rgba(0,0,0,0.58), rgba(0,0,0,0.78)),
              url("../images/bg-warm.jpg") center/cover fixed;
  color: #e8dcc0;
  min-height: 100vh;
}

/* Золотые искры */
body::after {
  content: ""; position: fixed; inset: 0; z-index: -1; pointer-events: none;
  background:
    radial-gradient(circle, rgba(255,215,0,0.18) 1.5px, transparent 5px),
    radial-gradient(circle, rgba(255,240,150,0.12) 2px, transparent 6px);
  background-size: 140px 140px, 200px 200px;
  opacity: 0.35;
  animation: spark 18s linear infinite;
}
@keyframes spark { from {background-position:0 0,0 0} to {background-position:300px 600px,-300px -300px} }

/* Шапка */
.site-header {position:fixed;top:0;left:0;width:100%;padding:18px 20px;background:rgba(15,12,8,0.88);backdrop-filter:blur(14px);border-bottom:1px solid rgba(255,215,0,0.2);z-index:1000}
.header-content {max-width:1400px;margin:0 auto;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:15px 20px;padding:0 10px}
.logo h1 {font-size:26px;color:#ffd700;letter-spacing:2px;text-shadow:0 0 12px rgba(255,215,0,0.3);margin:0}
.nav-buttons {display:flex;gap:18px;flex-wrap:wrap;justify-content:center}
.nav-btn {color:#e8dcc0;text-decoration:none;font-weight:600;padding:10px 22px;border:1.5px solid rgba(255,215,0,0.3);border-radius:50px;transition:.3s;white-space:nowrap}
.nav-btn:hover,.nav-btn.active {background:rgba(255,215,0,0.15);border-color:#ffd700;color:#fff;box-shadow:0 0 20px rgba(255,215,0,0.3)}
@media (max-width:950px){.nav-btn{padding:8px 16px;font-size:15px}.logo h1{font-size:23px}}
@media (max-width:700px){.header-content{flex-direction:column;text-align:center}.nav-buttons{order:-1;margin-bottom:8px}}

/* Переключатель — крупный и красивый */
.toggle-container {text-align:center;padding:140px 20px 60px}
.toggle-btn {
  font-size:28px;
  padding:20px 80px;
  background:rgba(255,215,0,0.15);
  color:#fff;
  border:3px solid #ffd700;
  border-radius:60px;
  cursor:pointer;
  transition:all .5s ease;
  box-shadow:0 0 35px rgba(255,215,0,0.3);
}
.toggle-btn:hover {transform:scale(1.06)}
.toggle-btn.active {
  background:#ffd700;
  color:#2c1800;
  box-shadow:0 0 50px rgba(255,215,0,0.5);
}

/* Галерея + ПЛАВНЫЕ АНИМАЦИИ */
.gallery {max-width:1500px;margin:0 auto;padding:0 20px 100px;position:relative}
.gallery-section {
  position: absolute;
  top: 0; left: 20px; right: 20px;
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
  pointer-events: none;
}
.gallery-section.active {
  position: relative;
  opacity: 1;
  transform: translateY(0);
  pointer-events: all;
  z-index: 2;
}

.grid {
  display:grid;
  grid-template-columns:repeat(auto-fill,minmax(340px,1fr));
  gap:40px;
}
.grid img {
  width:100%;
  height:480px;
  object-fit:cover;
  border-radius:22px;
  border:2px solid rgba(255,215,0,0.3);
  box-shadow:0 12px 35px rgba(0,0,0,0.6);
  transition:all .5s ease;
  cursor:pointer;
}
.grid img:hover {
  transform:translateY(-10px) scale(1.03);
  border-color:#ffd700;
  box-shadow:0 25px 50px rgba(0,0,0,0.7),0 0 60px rgba(255,215,0,0.5);
}

/* Футер */
footer {text-align:center;padding:60px 20px;background:rgba(0,0,0,0.78);border-top:1px solid rgba(255,215,0,0.15);backdrop-filter:blur(12px)}
.back-btn {color:#d4c090;font-size:18px;text-decoration:none;font-weight:600}
.back-btn:hover {color:#ffd700}