/* ========= RESET ========= */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: "Segoe UI", Arial, sans-serif;
  background: linear-gradient(135deg, #0f172a, #1e293b);
  color: #e5e7eb;
  min-height: 100vh;
}

/* ========= HEADER ========= */
header {
  text-align: center;
  padding: 60px 20px 30px;
}

header h1 {
  font-size: 38px;
  font-weight: 700;
  margin-bottom: 10px;
}

header p {
  font-size: 18px;
  color: #cbd5f5;
}

/* ========= MAIN CARD ========= */
.container {
  max-width: 900px;
  margin: 30px auto;
  background: #ffffff;
  color: #1f2937;
  border-radius: 14px;
  padding: 40px;
  box-shadow: 0 20px 40px rgba(0,0,0,0.3);
}

/* ========= FEATURES ========= */
.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
  margin-bottom: 40px;
}

.feature {
  background: #f8fafc;
  border-radius: 10px;
  padding: 20px;
  border-left: 5px solid #2563eb;
}

.feature h3 {
  font-size: 18px;
  margin-bottom: 8px;
}

.feature p {
  font-size: 14px;
  color: #4b5563;
}

/* ========= ACTION BUTTONS ========= */
.actions {
  display: flex;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
}

.actions a {
  text-decoration: none;
  padding: 14px 30px;
  font-size: 16px;
  border-radius: 10px;
  font-weight: 600;
  transition: 0.2s;
}

/* Student Button */
.actions a.student {
  background: #2563eb;
  color: #ffffff;
}

.actions a.student:hover {
  background: #1d4ed8;
}

/* Admin Button */
.actions a.admin {
  background: #0f172a;
  color: #ffffff;
}

.actions a.admin:hover {
  background: #020617;
}

/* ========= FOOTER ========= */
footer {
  text-align: center;
  margin-top: 40px;
  padding: 20px;
  font-size: 14px;
  color: #cbd5f5;
}

/* ========= MOBILE ========= */
@media (max-width: 600px) {
  header h1 {
    font-size: 28px;
  }

  .container {
    padding: 25px;
  }
}