/* Core styles assumed from global.css */

/* BTS SIO Page - Modern Theme */

body {
  background: linear-gradient(135deg, var(--color-white) 0%, var(--color-gray-50) 100%);
  position: relative;
}

body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="%23f0f0f0" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
  opacity: 0.5;
  z-index: -1;
}

.page-container { 
  padding-top: 6rem; 
  max-width: 1200px;
  margin: 0 auto;
  padding-left: 2rem;
  padding-right: 2rem;
}

header { 
  text-align: center; 
  padding: 0; 
  margin-bottom: 6rem;
  opacity: 0;
  transform: translateY(30px);
  animation: fadeInUp 1s ease-out 0.3s forwards;
}

header h1 { 
  font-size: clamp(2.5rem, 6vw, 4rem);
  line-height: 1.2; 
  border: none;
  color: var(--color-gray-900);
  font-weight: 700;
  margin-bottom: 0;
}

section {
  background: var(--color-white);
  padding: 3rem;
  border-radius: 12px;
  box-shadow: var(--shadow-subtle);
  margin-bottom: 2rem;
  opacity: 0;
  transform: translateY(30px);
  animation: fadeInUp 1s ease-out 0.6s forwards;
}

h2 {
  color: var(--color-accent);
  font-size: 1.75rem;
  margin-bottom: 1.5rem;
  font-weight: 600;
}

p {
  color: var(--color-gray-500);
  line-height: 1.7;
  margin-bottom: 2rem;
  font-size: 1.1rem;
}

ul { 
  padding-left: 0; 
  margin-bottom: 2rem; 
}

li { 
  margin-bottom: 1rem; 
  position: relative; 
  list-style: none; 
  padding-left: 2rem;
  color: var(--color-gray-500);
  line-height: 1.6;
}

li::before {
  content: "→"; 
  color: var(--color-accent); 
  position: absolute;
  left: 0; 
  font-size: 1.2em; 
  line-height: 1; 
  top: 0;
  font-weight: 600;
}

.certification-logos {
  display: grid; 
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 2rem; 
  margin: 3rem 0; 
  padding: 2.5rem;
  background: var(--color-gray-50); 
  border-radius: 12px;
  border: 1px solid rgba(0, 0, 0, 0.1);
}

.certification-logos img {
  width: 100%; 
  height: auto; 
  transition: var(--transition-smooth);
  filter: grayscale(0.3) opacity(0.8); 
  border-radius: 8px;
  margin: 0 auto; 
  display: block;
}

.certification-logos img:hover {
  transform: translateY(-5px) scale(1.05);
  filter: grayscale(0) opacity(1);
  box-shadow: var(--shadow-medium);
}

.lycee-image {
  max-width: 100%; 
  border-radius: 12px;
  margin: 2.5rem auto; 
  display: block;
  border: 1px solid rgba(0, 0, 0, 0.1);
  box-shadow: var(--shadow-medium);
  transition: var(--transition-smooth);
}

.lycee-image:hover {
  transform: scale(1.02);
  box-shadow: var(--shadow-strong);
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}