/* Minimal Notion-like layout and UI */
:root {
  --bg: #f7f7f9;
  --surface: #ffffff;
  --sidebar-bg: #ffffff;
  --border: #e5e7eb;
  --text: #1f2937; /* slate-800 */
  --muted: #6b7280; /* slate-500 */
  --primary: #4f46e5; /* indigo-600 */
  --primary-ink: #ffffff;
  --hover: #f3f4f6;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Layout */
.layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  height: 100vh;
}

.sidebar {
  background: var(--sidebar-bg);
  border-right: 1px solid var(--border);
  padding: 16px 12px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
}

.brand {
  font-weight: 700;
  font-size: 16px;
  color: var(--text);
  padding: 8px 10px;
  border-radius: 8px;
}

.nav {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.nav hr {
  width: 100%;
  border: none;
  border-top: 1px solid var(--border);
  margin: 8px 0;
}

.nav-link {
  display: block;
  padding: 8px 10px;
  border-radius: 8px;
  color: var(--text);
  text-decoration: none;
}
.nav-link:hover { background: var(--hover); }
.nav-link.active { background: rgba(79,70,229,0.12); color: #3730a3; }

.sidebar .logout {
  margin-top: auto;
  padding-top: 8px;
  border-top: 1px solid var(--border);
}

.main {
  overflow: auto;
  padding: 28px 40px;
  min-width: 0;
}

/* Page container to keep readable line length */
.page {
  max-width: 980px;
  margin: 0 auto;
}

h1, h2, h3 { margin: 0 0 12px; font-weight: 700; }
p { margin: 0 0 12px; color: var(--text); }

/* UI elements */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 12px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: #f9fafb;
  color: var(--text);
  text-decoration: none;
  cursor: pointer;
}
.btn:hover { background: var(--hover); }
.btn-primary { background: var(--primary); border-color: var(--primary); color: var(--primary-ink); }
.btn-primary:hover { filter: brightness(0.95); }
.btn-link { background: transparent; border-color: transparent; color: var(--primary); padding-left: 0; }
.btn-sm { padding: 4px 8px; font-size: 12px; }

label { display: block; margin: 8px 0 4px; color: var(--muted); font-size: 14px; }
.muted { color: var(--muted); }
input[type="text"], input[type="password"], textarea {
  width: 100%;
  padding: 10px 12px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--surface);
}
.form-row { margin-bottom: 14px; }
.checkbox { display: flex; align-items: center; gap: 8px; }

.alert {
  padding: 10px 12px;
  border-radius: 10px;
  margin: 10px 0 14px;
  border: 1px solid var(--border);
  background: #f9fafb;
}
.alert-success { background: #ecfdf5; color: #065f46; border-color: #a7f3d0; }
.alert-danger { background: #fef2f2; color: #991b1b; border-color: #fecaca; }

/* Spinner */
.spinner {
  display: none;
  width: 40px; height: 40px;
  border: 4px solid #f3f3f3;
  border-top: 4px solid var(--primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin: 16px auto;
}
@keyframes spin { 0% { transform: rotate(0deg); } 100% { transform: rotate(360deg); } }

/* Modal */
.modal {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.4);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
  z-index: 1000;
}
.modal-content {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  max-width: 800px;
  width: 100%;
  max-height: 80vh;
  overflow: auto;
  padding: 16px;
  box-shadow: 0 10px 25px rgba(0,0,0,0.15);
}
.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 10px;
}

/* Tables (if dashboard renders a table) */
table { width: 100%; border-collapse: collapse; background: var(--surface); }
th, td { border-bottom: 1px solid var(--border); padding: 10px 12px; text-align: left; }
th { background: #f9fafb; color: #111827; font-weight: 600; }

/* Table toolbar */
.table-toolbar { display: flex; justify-content: flex-end; align-items: center; margin: 8px 0; gap: 8px; }
.icon-btn { padding: 6px; border-radius: 8px; border: 1px solid transparent; cursor: pointer; font-size: 16px; }
.icon-btn:hover { background: var(--hover); }

/* Editable cell affordance */
td.editable { transition: background-color 0.15s ease; }
td.editable:hover { background: #f9fafb; }
td.editable span { cursor: text; }

/* Content container used in dashboard */
#table-container { overflow: auto; max-height: 60vh; background: var(--surface); border: 1px solid var(--border); border-radius: 10px; }

/* Bulk actions bar */
.bulk-actions { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 10px 12px; background: var(--surface); border: 1px solid var(--border); border-radius: 10px; margin-top: 10px; }
.bulk-info { color: var(--muted); }

/* Responsive */
@media (max-width: 900px) {
  .layout { grid-template-columns: 1fr; }
  .sidebar { position: relative; height: auto; border-right: none; border-bottom: 1px solid var(--border); }
  .main { padding: 20px 16px; }
  .page { max-width: 100%; }
}