:root {
  --primary: #1e3a8a;
  --primary-hover: #1e40af;
  --secondary: #0d9488;
  --bg-main: #f8fafc;
  --bg-card: #ffffff;
  --text-main: #0f172a;
  --text-muted: #64748b;
  --border-color: #e2e8f0;
  --danger-bg: #fee2e2;
  --danger-text: #b91c1c;
  --danger-border: #fca5a5;
  --warning-bg: #fef3c7;
  --warning-text: #92400e;
  --success-bg: #dcfce7;
  --success-text: #15803d;
  --info-bg: #e0f2fe;
  --info-text: #0369a1;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background-color: var(--bg-main);
  color: var(--text-main);
  line-height: 1.5;
  font-size: 13px;
}

.app-container {
  display: flex;
  height: 100vh;
  overflow: hidden;
  position: relative;
}

/* Sidebar */
.sidebar {
  width: 240px;
  background-color: #0f172a;
  color: #f8fafc;
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  z-index: 10;
}

.sidebar-header {
  padding: 16px 14px;
  border-bottom: 1px solid #1e293b;
}

.sidebar-header h2 {
  font-size: 15px;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 2px;
}

.sidebar-header .subtitle {
  font-size: 10px;
  color: #94a3b8;
  line-height: 1.3;
}

.sidebar-nav {
  flex: 1;
  padding: 12px 8px;
  overflow-y: auto;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  margin-bottom: 3px;
  border-radius: 6px;
  color: #cbd5e1;
  text-decoration: none;
  font-weight: 500;
  font-size: 13px;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease;
}

.nav-item:hover {
  background-color: #1e293b;
  color: #ffffff;
}

.nav-item.active {
  background-color: var(--primary);
  color: #ffffff;
}

.sidebar-footer {
  padding: 12px;
  border-top: 1px solid #1e293b;
  background-color: #0b1120;
}

.user-badge {
  display: flex;
  flex-direction: column;
  margin-bottom: 10px;
  gap: 2px;
}

.user-name {
  font-weight: 600;
  color: #ffffff;
  font-size: 12px;
  word-break: break-word;
}

.user-email {
  font-size: 10px;
  color: #94a3b8;
  word-break: break-all;
}

.user-role {
  font-size: 10px;
  color: #38bdf8;
  line-height: 1.3;
}

/* Main Content Wrapper */
.main-wrapper {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  min-width: 0;
}

/* Top Bar */
.top-bar {
  min-height: 56px;
  background: var(--bg-card);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 16px;
  flex-wrap: wrap;
  gap: 8px;
  flex-shrink: 0;
}

.top-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-main);
  white-space: nowrap;
}

.top-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.top-actions select {
  max-width: 220px;
  font-size: 12px;
  padding: 6px 8px;
  text-overflow: ellipsis;
}

.top-actions .btn {
  padding: 6px 12px;
  font-size: 12px;
  white-space: nowrap;
}

.content-area {
  flex: 1;
  overflow-y: auto;
  padding: 16px;
}

/* Cards & Grid */
.summary-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
  margin-bottom: 16px;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 12px 14px;
  box-shadow: 0 1px 2px rgba(0,0,0,0.04);
}

.stat-card .label {
  font-size: 11px;
  color: var(--text-muted);
  font-weight: 500;
  margin-bottom: 4px;
}

.stat-card .value {
  font-size: 17px;
  font-weight: 700;
  color: var(--text-main);
}

.stat-card.danger {
  border-color: var(--danger-border);
  background-color: #fff5f5;
}

.stat-card.danger .value {
  color: var(--danger-text);
}

.stat-card.warning {
  border-color: #fde68a;
  background-color: #fffbeb;
}

.stat-card.warning .value {
  color: var(--warning-text);
}

.stat-card.success .value {
  color: var(--success-text);
}

/* Warnings Box */
.warning-box {
  background-color: var(--warning-bg);
  border: 1px solid #fde68a;
  color: var(--warning-text);
  padding: 12px 16px;
  border-radius: 8px;
  margin-bottom: 16px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 12px;
}

.warning-box.danger {
  background-color: var(--danger-bg);
  border-color: var(--danger-border);
  color: var(--danger-text);
}

.warning-box-title {
  font-weight: 700;
  font-size: 13px;
  display: flex;
  align-items: center;
  gap: 6px;
}

/* Tables */
.table-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 1px 2px rgba(0,0,0,0.04);
  margin-bottom: 16px;
}

.table-header {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}

.table-title {
  font-size: 14px;
  font-weight: 700;
}

.table-responsive {
  width: 100%;
  overflow-x: auto;
}

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

th {
  background-color: #f8fafc;
  padding: 8px 10px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border-color);
  white-space: nowrap;
}

td {
  padding: 10px 10px;
  border-bottom: 1px solid var(--border-color);
  font-size: 12px;
}

tr:hover td {
  background-color: #f1f5f9;
}

tr.gap-row td {
  background-color: #fef2f2;
}

/* Badges */
.badge {
  display: inline-block;
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 10px;
  font-weight: 600;
  white-space: nowrap;
}

.badge-draft { background: #f1f5f9; color: #475569; }
.badge-to_pay { background: var(--info-bg); color: var(--info-text); }
.badge-planned { background: #fef3c7; color: #b45309; }
.badge-paid { background: var(--success-bg); color: var(--success-text); }
.badge-cancelled { background: #fee2e2; color: #991b1b; }
.badge-postponed { background: #f3e8ff; color: #7e22ce; }
.badge-gap { background: #fee2e2; color: #b91c1c; font-weight: 700; }
.badge-normal { background: #e0e7ff; color: #3730a3; }
.badge-critical { background: #fee2e2; color: #991b1b; }
.badge-high { background: #ffedd5; color: #9a3412; }
.badge-info { background: var(--info-bg); color: var(--info-text); }
.badge-success { background: var(--success-bg); color: var(--success-text); }
.badge-secondary { background: #e2e8f0; color: #334155; }

.allocation-box {
  background: #f8fafc;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  padding: 12px;
  margin: 12px 0;
}

.alloc-row {
  display: grid;
  grid-template-columns: 1.5fr 1.5fr 1.5fr auto 1.2fr 1.5fr auto;
  gap: 6px;
  align-items: center;
  margin-bottom: 8px;
}

/* Buttons & Inputs */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  padding: 6px 12px;
  font-size: 12px;
  font-weight: 500;
  border-radius: 5px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.15s ease;
  text-decoration: none;
}

.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-hover); }
.btn-secondary { background: #e2e8f0; color: #1e293b; }
.btn-secondary:hover { background: #cbd5e1; }
.btn-success { background: var(--secondary); color: #fff; }
.btn-success:hover { background: #0f766e; }
.btn-danger { background: #ef4444; color: #fff; }
.btn-danger:hover { background: #dc2626; }
.btn-sm { padding: 3px 6px; font-size: 11px; }

input, select, textarea {
  padding: 6px 10px;
  border: 1px solid var(--border-color);
  border-radius: 5px;
  font-size: 12px;
  color: var(--text-main);
  background-color: #ffffff;
  outline: none;
  font-family: inherit;
}

input:focus, select:focus, textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 2px rgba(30, 58, 138, 0.15);
}

.form-group {
  margin-bottom: 12px;
}

.form-group label {
  display: block;
  font-size: 11px;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 3px;
}

.form-row {
  display: flex;
  gap: 10px;
}

.form-row .form-group {
  flex: 1;
}

/* Modals */
.modal-overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(15, 23, 42, 0.65);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  backdrop-filter: blur(2px);
  padding: 16px;
}

.modal-content {
  background: #ffffff;
  border-radius: 10px;
  width: 100%;
  max-width: 600px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.15), 0 10px 10px -5px rgba(0, 0, 0, 0.05);
}

.modal-content.modal-lg {
  max-width: 920px;
  width: 100%;
}

.allocation-box {
  background: #f8fafc;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 12px;
  overflow-x: auto;
}

.alloc-header-row {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(0, 1.25fr) minmax(0, 1.25fr) minmax(0, 1fr) 46px minmax(0, 1.1fr) 32px;
  gap: 6px;
  font-size: 10px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-bottom: 6px;
  padding: 0 4px;
  min-width: 660px;
}

.alloc-row {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(0, 1.25fr) minmax(0, 1.25fr) minmax(0, 1fr) 46px minmax(0, 1.1fr) 32px;
  gap: 6px;
  align-items: center;
  margin-bottom: 8px;
  min-width: 660px;
}

.alloc-row select,
.alloc-row input[type="text"],
.alloc-row input[type="number"] {
  width: 100%;
  min-width: 0;
  max-width: 100%;
  box-sizing: border-box;
  text-overflow: ellipsis;
  font-size: 12px;
  padding: 6px 8px;
}

.alloc-row button {
  padding: 4px 6px;
  line-height: 1;
}

.alloc-balance-card {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  padding: 8px 12px;
  border-radius: 6px;
  font-size: 12px;
  margin-top: 8px;
  border: 1px solid var(--border-color);
  background-color: #ffffff;
}

.modal-header {
  padding: 14px 18px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-title {
  font-size: 15px;
  font-weight: 700;
}

.modal-body {
  padding: 16px 18px;
}

.modal-footer {
  padding: 12px 18px;
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  background-color: #f8fafc;
}

/* Auth Overlay Screen */
#auth-overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(15, 23, 42, 0.85);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  padding: 16px;
}

.auth-card {
  background: #ffffff;
  border-radius: 12px;
  width: 100%;
  max-width: 440px;
  padding: 28px 24px;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  text-align: center;
}

.auth-card h2 {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 6px;
}

.auth-card .auth-sub {
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 20px;
  line-height: 1.4;
}

.auth-card .google-btn {
  width: 100%;
  padding: 10px 16px;
  font-size: 14px;
  font-weight: 600;
  border-radius: 6px;
  background-color: #1e3a8a;
  color: #ffffff;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: background 0.15s ease;
}

.auth-card .google-btn:hover {
  background-color: #1e40af;
}

.auth-divider {
  display: flex;
  align-items: center;
  text-align: center;
  margin: 20px 0;
  color: var(--text-muted);
  font-size: 11px;
}

.auth-divider::before, .auth-divider::after {
  content: '';
  flex: 1;
  border-bottom: 1px solid var(--border-color);
}

.auth-divider:not(:empty)::before {
  margin-right: .5em;
}

.auth-divider:not(:empty)::after {
  margin-left: .5em;
}

/* Helper details row */
.details-row {
  background-color: #f8fafc;
  padding: 10px 14px;
  font-size: 11px;
  border-left: 3px solid var(--primary);
}

/* Tablet & Responsive adjustments (768px - 1024px) */
@media (max-width: 900px) {
  .sidebar {
    width: 180px;
  }
  .sidebar-header {
    padding: 12px 10px;
  }
  .sidebar-header h2 {
    font-size: 13px;
  }
  .sidebar-header .subtitle {
    font-size: 9px;
  }
  .nav-item {
    padding: 7px 8px;
    font-size: 12px;
    gap: 6px;
  }
  .top-bar {
    padding: 8px 12px;
  }
  .top-title {
    font-size: 14px;
  }
  .top-actions {
    gap: 6px;
  }
  .top-actions select {
    max-width: 160px;
    font-size: 11px;
  }
  .top-actions .btn {
    font-size: 11px;
    padding: 5px 8px;
  }
  .content-area {
    padding: 12px;
  }
  .summary-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
  }
  .stat-card {
    padding: 10px 12px;
  }
  .stat-card .value {
    font-size: 15px;
  }
  .alloc-header-row {
    display: none;
  }
  .alloc-row {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    background: #f8fafc;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 8px;
    gap: 6px;
    margin-bottom: 10px;
  }
}