:root {
  color-scheme: dark;
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #0B0E11;
  color: #F7FAFC;
  accent-color: #D9A74A;
  text-rendering: optimizeLegibility;
  line-height: 1.5;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background: radial-gradient(circle at top left, rgba(217, 167, 74, 0.12), transparent 28%),
    radial-gradient(circle at bottom right, rgba(0, 177, 94, 0.1), transparent 28%),
    #0B0E11;
}

button,
a {
  font: inherit;
}

a {
  color: inherit;
  text-decoration: none;
}

img,
svg {
  display: block;
  max-width: 100%;
}

.app-shell {
  display: flex;
  min-height: 100vh;
  flex-direction: column;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.5rem 2rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.brand {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 3rem;
  height: 3rem;
  border-radius: 1rem;
  background: linear-gradient(135deg, #D9A74A, #F3C969);
  color: #0B0E11;
  font-weight: 800;
  font-size: 1.3rem;
}

.eyebrow {
  margin: 0 0 0.5rem;
  color: #93A0B7;
  letter-spacing: 0.12em;
  font-size: 0.82rem;
  text-transform: uppercase;
}

.topbar h1,
.hero h2,
.info-panel h2,
.feature-card h3,
.info-list h4 {
  margin: 0;
}

.topbar h1 {
  font-size: clamp(1.35rem, 1.9vw, 2rem);
  color: #ffffff;
}

.primary-nav {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.primary-nav a,
.primary-nav .button {
  color: #cbd5e1;
}

.primary-nav a:hover,
.primary-nav .button:hover {
  color: #ffffff;
}

button,
.button {
  border: none;
  cursor: pointer;
  padding: 0.95rem 1.4rem;
  border-radius: 999px;
  transition: transform 180ms ease, background-color 180ms ease, color 180ms ease;
}

.button-primary {
  background: #D9A74A;
  color: #0B0E11;
}

.button-secondary {
  background: rgba(255, 255, 255, 0.08);
  color: #F7FAFC;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.button:hover {
  transform: translateY(-1px);
}

.hidden {
  display: none !important;
}

.hero {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 2rem;
  align-items: center;
  padding: 3rem 2rem;
}

.hero-copy h2 {
  font-size: clamp(2.4rem, 4vw, 3.6rem);
  line-height: 1.05;
  max-width: 54rem;
  margin: 0 0 1rem;
  color: #ffffff;
}

.hero-copy p {
  max-width: 42rem;
  color: #c8d4e2;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 2rem;
}

.hero-visual {
  display: grid;
  place-items: center;
}

.visual-panel span {
  display: inline-flex;
  padding: 0.85rem 1rem;
  margin: 0.25rem;
  border-radius: 999px;
  background: rgba(217, 167, 74, 0.14);
  color: #f7f9fb;
  font-weight: 600;
}

.auth-shell {
  display: grid;
  justify-items: center;
  padding: 4rem 2rem;
}

.auth-panel,
.admin-panel {
  width: min(100%, 44rem);
  max-width: 48rem;
  border-radius: 2rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  padding: 2rem;
}

.auth-header {
  margin-bottom: 2rem;
}

.auth-header h2,
.admin-panel h2 {
  margin: 0.25rem 0 0.75rem;
  color: #ffffff;
}

.auth-header p,
.admin-panel p {
  color: #c8d4e2;
  margin: 0;
}

.auth-form {
  display: grid;
  gap: 1rem;
}

.auth-form label {
  color: #e2e8f0;
  font-weight: 600;
}

.auth-form input {
  width: 100%;
  border-radius: 1rem;
  border: 1px solid rgba(255, 255, 255, 0.13);
  background: rgba(255, 255, 255, 0.06);
  color: #f7fafc;
  padding: 1rem;
}

.auth-form input:focus {
  outline: 2px solid rgba(217, 167, 74, 0.5);
  outline-offset: 2px;
}

.status-text {
  margin: 0;
  color: #c8d4e2;
  font-size: 0.95rem;
}

.dashboard-header {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: flex-start;
  margin-bottom: 1.5rem;
}

.dashboard-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(14rem, 1fr));
}

.dashboard-card {
  border-radius: 1.25rem;
  padding: 1.5rem;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.department-shell {
  padding: 2rem 1rem 4rem;
}

.department-panel {
  width: min(100%, 76rem);
  display: grid;
  gap: 1.5rem;
}

.department-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.department-search {
  display: grid;
  gap: 0.75rem;
}

.department-search label {
  font-weight: 600;
  color: #e2e8f0;
}

.department-search input {
  width: 100%;
  border-radius: 1rem;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.06);
  color: #f7fafc;
  padding: 1rem;
}

.department-list {
  display: grid;
  gap: 1rem;
}

.department-card {
  border-radius: 1.75rem;
  padding: 1.5rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.department-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
}

.department-card h3 {
  margin: 0;
  font-size: 1.2rem;
}

.department-description {
  margin: 0 0 1rem;
  color: #c8d4e2;
}

.department-details {
  display: grid;
  gap: 0.5rem;
  grid-template-columns: repeat(auto-fit, minmax(12rem, 1fr));
  color: #a9b7c7;
  margin-bottom: 1rem;
}

.department-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.status-pill {
  display: inline-flex;
  padding: 0.55rem 0.95rem;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 700;
}

.status-active {
  background: rgba(34, 197, 94, 0.16);
  color: #9ae6b4;
}

.status-inactive {
  background: rgba(248, 113, 113, 0.16);
  color: #fecaca;
}

.empty-state {
  margin: 0;
  color: #c8d4e2;
  padding: 2rem;
  text-align: center;
}

.class-shell {
  padding: 2rem 1rem 4rem;
}

.class-panel {
  width: min(100%, 76rem);
  display: grid;
  gap: 1.5rem;
}

.class-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.class-search {
  display: grid;
  gap: 0.75rem;
}

.class-search label {
  font-weight: 600;
  color: #e2e8f0;
}

.class-search input,
.class-search select {
  width: 100%;
  border-radius: 1rem;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.06);
  color: #f7fafc;
  padding: 1rem;
}

.class-filters {
  display: grid;
  gap: 0.75rem;
  grid-template-columns: repeat(auto-fit, minmax(12rem, 1fr));
}

.class-list {
  display: grid;
  gap: 1rem;
}

.class-card {
  border-radius: 1.75rem;
  padding: 1.5rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.class-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
}

.class-card h3 {
  margin: 0;
  font-size: 1.2rem;
}

.class-details {
  display: grid;
  gap: 0.5rem;
  grid-template-columns: repeat(auto-fit, minmax(12rem, 1fr));
  color: #a9b7c7;
  margin-bottom: 1rem;
}

.class-description {
  margin: 0 0 1rem;
  color: #c8d4e2;
}

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(11, 14, 17, 0.8);
  display: grid;
  place-items: center;
  padding: 1.5rem;
  z-index: 999;
}

.modal-card {
  width: min(100%, 36rem);
  border-radius: 1.75rem;
  background: rgba(15, 23, 42, 0.98);
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 36px 80px rgba(0, 0, 0, 0.45);
  padding: 2rem;
}

.modal-form {
  display: grid;
  gap: 1rem;
}

.modal-form h2 {
  margin: 0;
  color: #ffffff;
}

.modal-form label {
  color: #e2e8f0;
  font-weight: 600;
}

.modal-form input,
.modal-form textarea,
.modal-form select {
  width: 100%;
  border-radius: 1rem;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.06);
  color: #f7fafc;
  padding: 1rem;
}

.modal-form textarea {
  min-height: 7rem;
  resize: vertical;
}

.modal-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: flex-end;
}

/* Calendar styles */
.calendar-wrapper {
  display: grid;
  gap: 1rem;
}
.calendar-header {
  display:flex;
  align-items:center;
  gap:1rem;
  justify-content:center;
}
.calendar-grid {
  display:grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 0.5rem;
}
.calendar-weekday {
  text-align:center;
  font-weight:700;
  color:#cbd5e1;
}
.calendar-cell {
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.04);
  border-radius: 0.5rem;
  padding: 0.5rem;
  min-height: 4.5rem;
}
.calendar-cell.empty {
  background: transparent;
  border: none;
}
.cal-date { font-weight:700; }
.cal-counts { color:#a9b7c7; font-size:0.85rem; margin-top:0.35rem; }

@media (max-width: 780px) {
  .topbar,
  .department-header {
    flex-direction: column;
    align-items: stretch;
  }

  .department-search {
    width: 100%;
  }
}

.dashboard-card h4 {
  margin: 0 0 0.75rem;
  color: #ffffff;
}

.dashboard-card p {
  margin: 0;
  color: #c8d4e2;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(16rem, 1fr));
  gap: 1.5rem;
  padding: 2rem;
}

.feature-card,
.info-panel,
.info-list > div {
  border-radius: 1.5rem;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  padding: 1.75rem;
}

.feature-card h3 {
  color: #ffffff;
  margin-bottom: 0.85rem;
}

.feature-card p {
  color: #c8d4e2;
}

.info-panel {
  display: grid;
  grid-template-columns: 1.3fr 0.9fr;
  gap: 1.5rem;
  padding: 2rem;
  margin: 0 2rem 2rem;
}

.info-panel h2 {
  font-size: clamp(1.9rem, 3vw, 2.6rem);
  color: #ffffff;
}

.info-panel p {
  color: #cbd5e1;
  max-width: 42rem;
}

.info-list {
  display: grid;
  gap: 1rem;
}

.info-list h4 {
  color: #ffffff;
  margin-bottom: 0.5rem;
}

.info-list p {
  color: #a9b7c7;
}

.site-footer {
  padding: 1.5rem 2rem;
  margin-top: auto;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  color: #7f8fa4;
}

@media (max-width: 920px) {
  .hero,
  .info-panel {
    grid-template-columns: 1fr;
  }

  .features-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 720px) {
  .topbar {
    flex-direction: column;
    align-items: flex-start;
  }

  .hero {
    padding: 2rem 1.5rem;
  }

  .features-grid {
    grid-template-columns: 1fr;
  }

  .info-panel,
  .feature-card {
    padding: 1.5rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}