* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Segoe UI", Tahoma, sans-serif;
}

:root {
  --bg: #f4f7fb;
  --card: #ffffff;
  --text: #1f2937;
  --muted: #6b7280;
  --line: #e5e7eb;
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --success: #16a34a;
  --danger: #dc2626;
  --secondary: #6b7280;
  --sidebar: #0f172a;
  --sidebar-soft: #1e293b;
  --white: #ffffff;
  --shadow: 0 10px 25px rgba(15, 23, 42, 0.08);
  --radius: 16px;
  --sidebar-width: 280px;
}

html {
  scroll-behavior: smooth;
}

body {
  background: var(--bg);
  color: var(--text);
}

.app-shell {
  min-height: 100vh;
}

/* Sidebar */
.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  width: var(--sidebar-width);
  height: 100vh;
  background: var(--sidebar);
  color: var(--white);
  padding: 18px;
  transform: translateX(-100%);
  transition: transform 0.25s ease;
  z-index: 1200;
  display: flex;
  flex-direction: column;
  gap: 18px;
  overflow-y: auto;
}

.sidebar.open {
  transform: translateX(0);
}

.sidebar-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 10px;
}

.sidebar-header h2 {
  font-size: 22px;
  margin-bottom: 4px;
}

.sidebar-header p {
  font-size: 13px;
  color: #cbd5e1;
}

.sidebar-user {
  display: grid;
  gap: 10px;
}

.sidebar-user-box {
  background: var(--sidebar-soft);
  border-radius: 12px;
  padding: 12px;
}

.sidebar-label {
  display: block;
  font-size: 12px;
  color: #94a3b8;
  margin-bottom: 4px;
}

.sidebar-nav {
  display: grid;
  gap: 10px;
}

.nav-link {
  width: 100%;
  border: none;
  background: transparent;
  color: var(--white);
  text-align: left;
  padding: 12px 14px;
  border-radius: 12px;
  font-size: 15px;
  cursor: pointer;
  transition: 0.2s ease;
}

.nav-link:hover,
.nav-link.active {
  background: var(--primary);
}

.sidebar-footer {
  margin-top: auto;
}

/* Overlay */
.sidebar-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.45);
  z-index: 1100;
  display: none;
}

.sidebar-overlay.show {
  display: block;
}

/* Main content */
.main-content {
  min-height: 100vh;
  transition: margin-left 0.25s ease;
}

.main-content.shifted {
  margin-left: var(--sidebar-width);
}

/* Topbar */
.mobile-topbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(244, 247, 251, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
  padding: 14px 16px;
}

.mobile-topbar-left {
  display: flex;
  align-items: center;
  gap: 12px;
}

.mobile-topbar h1 {
  font-size: 18px;
  margin-bottom: 2px;
}

.mobile-topbar p {
  font-size: 12px;
  color: var(--muted);
}

/* Content */
.content-wrap {
  padding: 16px;
}

/* Cards */
.card {
  background: var(--card);
  border-radius: var(--radius);
  padding: 16px;
  margin-bottom: 16px;
  box-shadow: var(--shadow);
}

.card-header h3 {
  font-size: 18px;
  margin-bottom: 4px;
}

.card-header p {
  color: var(--muted);
  font-size: 13px;
}

/* Dashboard stats */
.dashboard-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 16px;
}

.stat-card {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: var(--white);
  border-radius: 18px;
  padding: 18px 14px;
  text-align: center;
  box-shadow: var(--shadow);
}

.stat-card h3 {
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 8px;
}

.stat-card p {
  font-size: 24px;
  font-weight: 700;
}

/* Forms */
.form-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-top: 14px;
}

.form-group {
  display: flex;
  flex-direction: column;
}

.full-width {
  grid-column: span 1;
}

label {
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 6px;
}

input,
select,
textarea {
  width: 100%;
  min-height: 46px;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px 14px;
  font-size: 15px;
  background: #fff;
}

textarea {
  min-height: 100px;
  resize: vertical;
}

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--primary);
}

/* Search */
.search-form {
  margin-top: 12px;
}

.search-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
}

.search-results {
  margin-top: 14px;
}

.result-card {
  background: #f8fafc;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 14px;
  display: grid;
  gap: 12px;
  margin-bottom: 10px;
}

.result-card h4 {
  font-size: 16px;
  margin-bottom: 8px;
}

.result-card p {
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 4px;
}

/* Titles */
.section-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--primary);
  margin-top: 6px;
}

/* Checkboxes */
.checkbox-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.checkbox-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #f8fafc;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 10px 12px;
}

/* Buttons */
.form-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.btn {
  border: none;
  border-radius: 12px;
  min-height: 46px;
  padding: 12px 16px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: 0.2s ease;
}

.btn:hover {
  opacity: 0.95;
}

.btn-block {
  width: 100%;
}

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

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

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

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

/* Alerts */
.alert {
  padding: 12px 14px;
  border-radius: 12px;
  margin-bottom: 12px;
  font-size: 14px;
}

.alert-success {
  background: #dcfce7;
  color: #166534;
}

.alert-danger {
  background: #fee2e2;
  color: #991b1b;
}

.alert-info {
  background: #dbeafe;
  color: #1e40af;
}

/* Empty */
.empty-state {
  text-align: center;
  color: var(--muted);
  padding: 18px;
}

/* Icon button */
.icon-btn {
  width: 42px;
  height: 42px;
  border: none;
  border-radius: 12px;
  background: #e2e8f0;
  color: #0f172a;
  font-size: 18px;
  cursor: pointer;
}

.mobile-only {
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

/* Loader */
.loader-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.35);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
}

.loader-spinner {
  width: 52px;
  height: 52px;
  border: 5px solid #ffffff;
  border-top: 5px solid var(--primary);
  border-radius: 50%;
  animation: spin 0.9s linear infinite;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* Tablet */
@media (min-width: 768px) {
  .content-wrap {
    padding: 24px;
  }

  .dashboard-grid {
    grid-template-columns: repeat(3, 1fr);
  }

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

  .full-width {
    grid-column: span 2;
  }

  .search-row {
    grid-template-columns: 1fr auto;
  }
}

/* Desktop */
@media (min-width: 992px) {
  .dashboard-grid {
    grid-template-columns: repeat(5, 1fr);
  }

  .content-wrap {
    padding: 24px 28px;
  }

  .mobile-topbar {
    padding: 18px 24px;
  }

  /* Desktop par bhi toggle button visible rahega */
  #openSidebarBtn {
    display: inline-flex !important;
  }

  /* Close button sirf mobile ke liye hide kar do */
  .mobile-only {
    display: none !important;
  }
}