@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

:root {
  --primary: #4f46e5;
  /* Indigo 600 */
  --primary-hover: #4338ca;
  /* Indigo 700 */
  --secondary: #64748b;
  /* Slate 500 */
  --success: #10b981;
  /* Emerald 500 */
  --danger: #ef4444;
  /* Red 500 */
  --warning: #f59e0b;
  /* Amber 500 */
  --info: #3b82f6;
  /* Blue 500 */

  --bg-body: #f1f5f9;
  /* Slate 100 */
  --bg-card: #ffffff;
  --text-main: #0f172a;
  /* Slate 900 */
  --text-muted: #64748b;
  /* Slate 500 */

  --sidebar-bg: #0f172a;
  /* Slate 900 */
  --sidebar-hover: #1e293b;
  /* Slate 800 */
  --sidebar-active: #334155;
  /* Slate 700 */

  --radius: 0.5rem;
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -1px rgb(0 0 0 / 0.06);
}

html {
  font-size: 14px;
}

@media (min-width: 768px) {
  html {
    font-size: 15px;
    /* Slightly larger base size for readability */
  }
}

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background-color: var(--bg-body);
  color: var(--text-main);
  margin-bottom: 0;
  overflow-x: hidden;
}

/* Layout & Wrapper */
#wrapper {
  overflow-x: hidden;
  display: flex;
  transition: margin-left 0.3s ease;
}

#wrapper.toggled #sidebar-wrapper {
  margin-left: -260px;
}

#sidebar-wrapper {
  min-height: 100vh;
  margin-left: 0;
  width: 260px;
  flex-shrink: 0;
  background-color: var(--sidebar-bg);
  border-right: 1px solid #1e293b;
  transition: margin-left 0.3s ease;
}

#page-content-wrapper {
  width: 100%;
  flex-grow: 1;
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 600;
  color: var(--text-main);
  letter-spacing: -0.025em;
}

.text-muted {
  color: var(--text-muted) !important;
}

/* Sidebar Styles */
.sidebar-heading {
  font-size: 1.1rem;
  font-weight: 700;
  color: #fff;
  padding: 1.5rem;
  display: flex;
  align-items: center;
  border-bottom: 1px solid #1e293b;
  margin-bottom: 1rem;
}

.list-group-item {
  background-color: transparent;
  border: none;
  color: #94a3b8;
  /* Slate 400 */
  padding: 0.75rem 1.5rem;
  font-weight: 500;
  transition: all 0.2s;
  font-size: 0.95rem;
}

.list-group-item:hover {
  background-color: var(--sidebar-hover);
  color: #fff;
  padding-left: 1.75rem;
  /* Slide effect */
}

.list-group-item.active {
  background-color: var(--sidebar-active);
  color: #fff;
  border-left: 3px solid var(--primary);
}

.sidebar-group-header {
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.75rem;
  color: #64748b;
  padding: 0.5rem 1.5rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.sidebar-group-header .bi-chevron-down {
  transition: transform 0.2s;
}

.sidebar-group-header.collapsed .bi-chevron-down {
  transform: rotate(-90deg);
}

/* Buttons */
.btn {
  border-radius: var(--radius);
  font-weight: 500;
  padding: 0.5rem 1rem;
  box-shadow: var(--shadow-sm);
  transition: all 0.2s;
}

.btn:active {
  transform: translateY(1px);
}

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

.btn-primary:hover,
.btn-primary:focus {
  background-color: var(--primary-hover);
  border-color: var(--primary-hover);
  box-shadow: 0 0 0 0.2rem rgba(79, 70, 229, 0.25);
}

/* Cards */
.card {
  border: none;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  background-color: var(--bg-card);
  overflow: hidden;
  margin-bottom: 1.5rem;
}

.card-header {
  background-color: #fff;
  border-bottom: 1px solid #e2e8f0;
  padding: 1.25rem 1.5rem;
  font-weight: 600;
}

/* Forms */
.form-control,
.form-select {
  border-radius: var(--radius);
  border: 1px solid #e2e8f0;
  padding: 0.6rem 0.8rem;
  box-shadow: var(--shadow-sm);
}

.form-control:focus,
.form-select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 0.2rem rgba(79, 70, 229, 0.1);
}

.required-field::after {
  content: " *";
  color: var(--danger);
  margin-left: 4px;
}

/* Tables */
.table {
  margin-bottom: 0;
}

.table thead th {
  background-color: #f8fafc;
  color: var(--text-muted);
  font-weight: 600;
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  border-bottom: 1px solid #e2e8f0;
  padding: 1rem;
}

.table td {
  padding: 1rem;
  vertical-align: middle;
  border-bottom: 1px solid #f1f5f9;
}

.table-hover tbody tr:hover {
  background-color: #f8fafc;
}

/* Navbar */
.navbar-custom {
  background-color: var(--bg-card);
  border-bottom: 1px solid #e2e8f0;
  box-shadow: var(--shadow-sm);
  padding: 0.75rem 1.5rem;
}

.navbar-brand {
  font-weight: 700;
  color: var(--primary) !important;
  font-size: 1.25rem;
}