/* ===== Body & Fonts ===== */
body {
  font-family: -apple-system, BlinkMacSystemFont, "Arial", sans-serif;
  background: linear-gradient(135deg, #0b0f25, #1b1f3e, #3b3f7a, #4f46e5);
  background-size: 300% 300%;
  animation: gradientShift 30s ease infinite;
  color: #e2e8f0;
  padding: 2rem;
  overflow-x: hidden;
}
@keyframes gradientShift {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}
h1, h2, h3 { font-weight: 600; }
h1 span {
  background: linear-gradient(270deg, #8b5cf6, #4f46e5, #0f172a);
  background-size: 600% 600%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: textGradient 8s ease infinite;
}
@keyframes textGradient {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}
p { color: #c3c1ff; margin-top: 4px; margin-bottom: 8px; }

/* ===== Schedule Rows ===== */
.schedule-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
  margin-bottom: 1rem;
  align-items: stretch;
  opacity: 0;
  transform: translateY(20px);
  animation: fadeInUp 0.6s forwards;
}
.schedule-row:nth-child(1) { animation-delay: 0.1s; }
.schedule-row:nth-child(2) { animation-delay: 0.2s; }
.schedule-row:nth-child(3) { animation-delay: 0.3s; }
.schedule-row:nth-child(4) { animation-delay: 0.4s; }
@keyframes fadeInUp {
  to { opacity: 1; transform: translateY(0); }
}

/* ===== Schedule Cards ===== */
.schedule-card {
  position: relative;
  background: rgba(30, 41, 59, 0.55);
  backdrop-filter: blur(12px) saturate(150%);
  border-radius: 16px;
  padding: 16px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  border: 1px solid rgba(139, 92, 246, 0.15);
  box-shadow: 0 4px 12px rgba(0,0,0,0.2);
  transition: all 0.25s ease-in-out;
  overflow: hidden;
  z-index: 1;
  will-change: transform, box-shadow, border-color;
  --mouseX: 0;
  --mouseY: 0;
}
.schedule-card:hover {
  box-shadow: 0 8px 16px rgba(139, 92, 246, 0.15), 0 12px 24px rgba(0,0,0,0.1);
  border-color: rgba(139, 92, 246, 0.25);
  outline: 1px solid rgba(139,92,246,0.2);
  outline-offset: -2px;
  transform: translateY(-6px) translateX(calc(var(--mouseX) * 0.03)) translateY(calc(var(--mouseY) * 0.03));
}
.schedule-card h3 {
  color: #e0d7ff;
  text-shadow: 0 0 4px rgba(139,92,246,0.15);
  transition: all 0.3s ease;
}
.schedule-card:hover h3 { text-shadow: 0 0 6px rgba(139,92,246,0.25); }
.schedule-card p { color: #c3c1ff; }

/* ===== Dropdown Menu & Button ===== */
#dayDropdownBtn {
  cursor: pointer;
  background: linear-gradient(135deg, #8b5cf6, #4f46e5);
  background-size: 400% 400%;
  color: #fff;
  font-weight: 500;
  border-radius: 12px;
  padding: 0.5rem 1rem;
  transition: all 0.3s ease;
  animation: buttonGradient 8s ease infinite;
}
@keyframes buttonGradient {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}
#dayDropdownBtn:hover { filter: brightness(1.1); box-shadow: 0 5px 15px rgba(139,92,246,0.4); }
#dayDropdown {
  background: rgba(30,41,59,0.95);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 10px 20px rgba(139,92,246,0.3);
  z-index: 50;
}
.dropdown-item { transition: all 0.2s ease; }
.dropdown-item:hover {
  background: linear-gradient(135deg, #8b5cf6, #4f46e5);
  color: #fff;
}

/* ===== Scrollbar ===== */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-thumb { background: linear-gradient(to bottom, #8b5cf6, #4f46e5); border-radius: 3px; }
::-webkit-scrollbar-track { background: #0f172a; }

/* ===== Letter Day Clock ===== */
.day-clock-wrapper { display: flex; justify-content: center; margin-bottom: 2rem; }
.day-clock-card {
  background: rgba(30, 41, 59, 0.55);
  backdrop-filter: blur(15px) saturate(180%);
  border: 1px solid rgba(139, 92, 246, 0.25);
  border-radius: 20px;
  padding: 1.25rem 2rem;
  text-align: center;
  box-shadow: 0 6px 16px rgba(0,0,0,0.35);
  transition: all 0.3s ease;
  max-width: 280px;
  width: 100%;
}
.day-clock-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 24px rgba(139,92,246,0.35);
  border-color: rgba(139,92,246,0.4);
}
.day-clock-card h2 {
  font-size: 1.75rem;
  font-weight: 600;
  background: linear-gradient(90deg, #a78bfa, #4f46e5, #60a5fa);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-size: 200% 200%;
  animation: textShift 6s ease infinite;
  margin-bottom: 0.25rem;
}
.day-clock-card p { color: #c3c1ff; font-size: 0.9rem; opacity: 0.9; }
@keyframes textShift { 0% { background-position: 0% 50%; } 50% { background-position: 100% 50%; } 100% { background-position: 0% 50%; } }

/* ===== Mobile Layout ===== */
@media (max-width: 768px) {
  .schedule-day {
    display: flex;
    flex-direction: column;
    gap: 1rem;
  }

  .schedule-row {
    display: contents; /* keeps cards in flow without extra divs */
  }

  .schedule-card {
    width: 100%;
    max-width: 100%;
    margin: 0 auto;
  }
}