:root {
  --primary-bg: #0f172a;
  --secondary-bg: #1e293b;
  --accent-color: #7c3aed;
  --accent-hover: #8b5cf6;
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --glass-bg: rgba(30, 41, 59, 0.7);
  --glass-border: rgba(255, 255, 255, 0.1);
  --success: #10b981;
  --danger: #ef4444;
}

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

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background-color: var(--primary-bg);
  color: var(--text-main);
  padding: 2rem;
  line-height: 1.5;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
}

h2 {
  font-size: 1.875rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  color: var(--text-main);
  border-left: 4px solid var(--accent-color);
  padding-left: 1rem;
}

.table-container {
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-radius: 1rem;
  overflow-x: auto;
  /* Changed from hidden to allow scrolling on mobile */
  margin-bottom: 2.5rem;
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

th {
  background: rgba(124, 58, 237, 0.1);
  color: var(--text-muted);
  font-weight: 600;
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  padding: 1rem;
  border-bottom: 1px solid var(--glass-border);
}

td {
  padding: 1rem;
  border-bottom: 1px solid var(--glass-border);
  font-size: 0.875rem;
  color: var(--text-main);
  transition: background-color 0.2s;
}

tr:hover td {
  background: rgba(255, 255, 255, 0.03);
}

[contenteditable] {
  outline: none;
  padding: 0.25rem 0.5rem;
  border-radius: 0.25rem;
  transition: background-color 0.2s;
}

[contenteditable]:focus {
  background: rgba(124, 58, 237, 0.2);
  box-shadow: 0 0 0 2px var(--accent-color);
}

.total-row {
  background: rgba(124, 58, 237, 0.05);
  font-weight: 700;
}

.total-row td {
  border-bottom: none;
  color: var(--accent-color);
  font-size: 1.125rem;
}

/* BUTTONS */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.5rem 1rem;
  border-radius: 0.5rem;
  font-weight: 600;
  font-size: 0.875rem;
  cursor: pointer;
  transition: all 0.2s;
  border: none;
  gap: 0.5rem;
  text-decoration: none;
}

.btn-primary {
  background: var(--accent-color);
  color: white;
}

.btn-primary:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
}

.btn-danger {
  background: rgba(239, 68, 68, 0.1);
  color: var(--danger);
  border: 1px solid rgba(239, 68, 68, 0.2);
}

.btn-danger:hover {
  background: var(--danger);
  color: white;
}

.btn-copy {
  background: rgba(124, 58, 237, 0.1);
  color: var(--accent-color);
  border: 1px solid rgba(124, 58, 237, 0.2);
}

.btn-copy:hover {
  background: var(--accent-color);
  color: white;
}

.btn-paste {
  margin-top: 1rem;
  width: 100%;
  border: 2px dashed var(--glass-border);
  background: transparent;
  color: var(--text-muted);
}

.btn-paste:hover {
  border-color: var(--accent-color);
  color: var(--accent-color);
  background: rgba(124, 58, 237, 0.05);
}

.actions-cell {
  display: flex;
  gap: 0.5rem;
}

.export-container {
  margin-top: 2rem;
  display: flex;
  justify-content: flex-end;
}

.status-badge {
  padding: 0.25rem 0.75rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 600;
}

.status-present {
  background: rgba(16, 185, 129, 0.1);
  color: var(--success);
}

.status-absent {
  background: rgba(239, 68, 68, 0.1);
  color: var(--danger);
}

.status-pending {
  background: rgba(245, 158, 11, 0.1);
  color: #f59e0b;
}

/* RESPONSIVE DESIGN */
@media (max-width: 768px) {
  body {
    padding: 1rem;
  }

  h2 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
  }

  th,
  td {
    padding: 0.75rem 0.5rem;
    font-size: 0.8rem;
    min-width: 120px;
    /* Ensures columns don't squash too much */
  }

  .actions-cell {
    flex-direction: column;
    gap: 0.25rem;
  }

  .btn {
    padding: 0.4rem 0.75rem;
    font-size: 0.75rem;
  }

  .export-container {
    justify-content: center;
  }

  .btn-primary {
    width: 100%;
  }
}