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

html { scroll-behavior: smooth; }

body { -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }

/* Scrollbar */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: #f8fafc; }
::-webkit-scrollbar-thumb { background: #15803d; border-radius: 10px; }
::-webkit-scrollbar-thumb:hover { background: #166534; }

/* Header */
#header { background: transparent; transition: all 0.3s ease; }
#header.scrolled {
  background: rgba(5, 46, 22, 0.92);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  box-shadow: 0 1px 20px rgba(0,0,0,0.15);
}
#header.scrolled nav { padding-top: 0.875rem; padding-bottom: 0.875rem; }

/* Nav underline */
.nav-link { position: relative; }
.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: #4ade80;
  transition: width 0.3s ease;
}
.nav-link:hover::after,
.nav-link.active::after { width: 100%; }

/* Reveal */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }

/* Fade in */
@keyframes fadeUp { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }
.fade-in { opacity: 0; animation: fadeUp 0.7s ease-out forwards; }

/* Calendar */
.cal-row { border-bottom: 1px solid rgba(255,255,255,0.05); transition: background 0.2s; }
.cal-row:last-child { border-bottom: none; }
.cal-row:hover { background: rgba(255,255,255,0.02); }
.cal-cell-active { background: rgba(34,197,94,0.12); border: 1px solid rgba(34,197,94,0.2); }
.cal-cell-inactive { background: rgba(255,255,255,0.03); border: 1px solid rgba(255,255,255,0.05); }

/* Mobile calendar */
.month-chip {
  display: inline-flex; align-items: center; justify-content: center;
  width: 36px; height: 36px; border-radius: 8px;
  font-size: 11px; font-weight: 600;
}
.month-chip.active { background: rgba(34,197,94,0.15); color: #4ade80; border: 1px solid rgba(34,197,94,0.25); }
.month-chip.inactive { background: rgba(255,255,255,0.04); color: rgba(255,255,255,0.25); border: 1px solid rgba(255,255,255,0.06); }

/* Modal */
#login-modal { display: none; }
#login-modal.active { display: flex; }
.modal-enter { animation: modalIn 0.25s ease-out; }
@keyframes modalIn { from { opacity: 0; transform: scale(0.97) translateY(8px); } to { opacity: 1; transform: scale(1) translateY(0); } }

::selection { background: #22c55e; color: white; }
input:focus, button:focus-visible { outline: none; }
section { scroll-margin-top: 72px; }

@media (max-width: 768px) { .reveal { transform: translateY(16px); } }