@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@600;700;800&family=Open+Sans:wght@400;600;700&display=swap');

:root {
  --primary: #764ba2;
  --secondary: #667eea;
  --accent: #ff758c;
  --dark: #2d3748;
  --dark-strong: #1c2938;
  --light: #f7fafc;
  --surface: rgba(255, 255, 255, 0.92);
  --border: rgba(118, 75, 162, 0.18);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: 'Open Sans', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background-color: var(--light);
  background-image: radial-gradient(circle at top left, rgba(118, 75, 162, 0.12), transparent 22%),
                    radial-gradient(circle at bottom right, rgba(255, 117, 140, 0.1), transparent 20%);
  color: var(--dark-strong);
  line-height: 1.6;
}

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 8%;
  background: rgba(255,255,255,0.92);
  border-bottom: 1px solid rgba(179, 143, 251, 0.18);
  backdrop-filter: blur(14px);
  position: sticky;
  top: 0;
  z-index: 100;
}
.logo { font-size: 1.9rem; font-weight: 800; color: var(--primary); letter-spacing: 1px; text-shadow: 0 1px 2px rgba(115, 55, 178, 0.35); }
nav a { margin-left: 22px; text-decoration: none; color: var(--dark-strong); font-weight: 600; transition: color 0.3s, transform 0.3s; position: relative; }
nav a:hover { color: var(--accent); transform: translateY(-1px); }
nav a.active { color: var(--accent); }
nav a.active::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: -6px;
  height: 3px;
  background: var(--accent);
  border-radius: 999px;
}

.hero {
  text-align: center;
  padding: 110px 5% 80px;
  background: linear-gradient(135deg, var(--secondary) 0%, var(--primary) 55%, #5b3ec8 100%);
  color: #fff;
  position: relative;
  overflow: hidden;
}
.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 30% 20%, rgba(255,255,255,0.18), transparent 26%),
              radial-gradient(circle at 70% 80%, rgba(255,255,255,0.12), transparent 18%);
  pointer-events: none;
}
.hero h1 { font-size: clamp(2.8rem, 4vw, 3.6rem); margin-bottom: 16px; font-family: 'Montserrat', sans-serif; font-weight: 900; letter-spacing: 0.04em; text-shadow: 0 10px 30px rgba(0,0,0,0.14); }
.hero h2 { font-size: clamp(1.35rem, 2vw, 1.8rem); font-weight: 500; opacity: 0.95; margin-bottom: 24px; font-family: 'Montserrat', sans-serif; }
.hero p { max-width: 720px; margin: 0 auto 28px; font-size: 1.05rem; opacity: 0.95; line-height: 1.8; }
.hero .button-row { justify-content: center; }

h1, h2, h3 {
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
}

.page-content { max-width: 1040px; margin: 40px auto 50px; padding: 0 20px 60px; }
.intro-card, .content-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 32px;
  box-shadow: 0 20px 50px rgba(105, 63, 220, 0.1);
  margin-bottom: 28px;
}
.intro-card h2, .content-card h2 { color: var(--dark-strong); }
.intro-card p, .content-card p { color: rgba(31, 15, 61, 0.86); }

.footer-info {
  max-width: 700px;
  margin: 24px auto 0;
  text-align: left;
}

.footer-info h4 {
  color: #f4edff;
  margin-bottom: 12px;
}

.footer-info ul {
  margin-top: 12px;
  padding-left: 20px;
  color: #d8d0ff;
}

.footer-info li {
  margin-bottom: 8px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 26px;
  background: linear-gradient(135deg, var(--secondary), var(--primary));
  color: white;
  text-decoration: none;
  border-radius: 999px;
  font-weight: 700;
  margin-top: 10px;
  transition: transform 0.25s ease, box-shadow 0.25s ease, opacity 0.25s ease;
  box-shadow: 0 14px 30px rgba(118, 75, 162, 0.18);
}
.btn.secondary {
  background: linear-gradient(135deg, var(--primary), var(--accent));
}
.btn:hover {
  transform: translateY(-2px);
  opacity: 0.98;
}
.btn:focus-visible {
  outline: 3px solid rgba(167, 139, 250, 0.65);
  outline-offset: 4px;
}

.button-row { display: flex; gap: 12px; flex-wrap: wrap; }

.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 20px; }
.section-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 16px;
}
.section-link {
  text-decoration: none;
  color: var(--primary);
  background: #f4edff;
  padding: 10px 14px;
  border-radius: 999px;
  font-weight: 600;
  transition: transform 0.2s ease, background 0.2s ease;
}
.section-link:hover {
  transform: translateY(-2px);
  background: #e9dcff;
}
.category-section {
  margin-top: 30px;
}
.category-section h2 {
  margin-bottom: 18px;
  color: var(--primary);
}
.card {
  background: var(--light);
  padding: 20px;
  border-radius: 15px;
  border: 1px solid #e2e8f0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.card h3 { margin-bottom: 4px; color: var(--primary); }
.card img {
  width: 100%;
  height: 160px;
  object-fit: cover;
  border-radius: 12px;
  margin-bottom: 6px;
}
.card-meta {
  font-size: 0.95rem;
  color: var(--accent);
  font-weight: 600;
}
.card {
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}
.card:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 24px rgba(0,0,0,0.08);
}
.card.active {
  border-color: var(--primary);
  box-shadow: 0 14px 28px rgba(118, 75, 162, 0.12);
}

.university-details {
  margin-top: 8px;
  padding: 16px 18px;
  border-radius: 16px;
  background: #f5f0ff;
  border: 1px solid #d8c4ff;
  display: none;
}
.university-details.active {
  display: block;
}
.university-details h4 {
  margin-bottom: 8px;
  color: var(--primary);
}
.university-details p {
  margin-bottom: 10px;
}

ul { padding-left: 20px; }
li { margin-bottom: 8px; }

footer {
  background: #100821;
  color: #d8c7ff;
  padding: 40px 5%;
  text-align: center;
  border-top: 1px solid rgba(255,255,255,0.07);
}
footer h3 {
  margin-bottom: 10px;
}
footer p {
  opacity: 0.85;
}
footer a {
  color: #d8c7ff;
}

.quick-tests {
  margin-top: 30px;
  padding: 24px;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.24);
}

.quick-tests h3 {
  margin-bottom: 18px;
  color: var(--dark-strong);
}

.quick-tests .button-row {
  justify-content: center;
}

.quiz-form {
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.quiz-question {
  background: rgba(255, 255, 255, 0.94);
  border: 1px solid rgba(196, 180, 255, 0.55);
  border-radius: 18px;
  padding: 20px 22px;
}
.quiz-question h3 {
  margin-bottom: 12px;
  color: var(--dark-strong);
}
.quiz-options {
  display: grid;
  gap: 12px;
}
.quiz-options label {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  background: #faf5ff;
  padding: 12px 14px;
  border-radius: 14px;
  border: 1px solid rgba(196, 180, 255, 0.45);
  cursor: pointer;
  transition: border-color 0.2s ease, transform 0.2s ease, background 0.2s ease;
}
.quiz-options label:hover {
  border-color: rgba(139, 92, 246, 0.55);
  transform: translateX(2px);
  background: #fff;
}
.quiz-options input {
  margin-top: 3px;
}
.quiz-result {
  margin-top: 20px;
  padding: 20px;
  border-radius: 18px;
  background: linear-gradient(180deg, rgba(255,255,255,0.98), #f1f6ff);
  border: 1px solid rgba(139, 92, 246, 0.18);
  color: var(--dark-strong);
}
.quiz-result h3 {
  margin-bottom: 8px;
}

@media (max-width: 768px) {
  header { flex-direction: column; gap: 12px; }
  nav a { margin: 0 8px; }
  .hero h1 { font-size: 2.2rem; }
  .button-row { flex-direction: column; }
  .page-content { padding: 0 16px 50px; }
}

@media (min-width: 992px) {
  .quiz-card-row {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 24px;
  }
  .quiz-subcard {
    padding: 24px;
    border-radius: 24px;
    background: rgba(255, 255, 255, 0.96);
    border: 1px solid rgba(196, 180, 255, 0.6);
    box-shadow: 0 18px 45px rgba(132, 90, 238, 0.08);
  }
}

.quiz-subcard h3 {
  margin-bottom: 16px;
  color: var(--dark-strong);
}

.form-field,
.form-textarea {
  width: 100%;
  padding: 14px 16px;
  border-radius: 16px;
  border: 1px solid rgba(139, 92, 246, 0.22);
  background: rgba(255, 255, 255, 0.96);
  font-size: 1rem;
  margin-top: 8px;
}

.form-textarea {
  min-height: 150px;
  resize: vertical;
}

label {
  display: block;
  font-weight: 600;
  color: var(--dark-strong);
}