/* =========================================================
   Activity Tracker Dashboard - Modern Light Theme
   Clean, high-contrast, easy-on-the-eyes UI
   ========================================================= */

/* Bootstrap variable overrides */
:root{
  --bs-body-font-family: "Inter", system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  --bs-body-bg: #f6f7fb;
  --bs-body-color: #0f172a;

  --bs-primary: #2563eb;
  --bs-secondary: #64748b;
  --bs-success: #16a34a;
  --bs-danger: #dc2626;
  --bs-warning: #d97706;
  --bs-info: #0891b2;

  --bs-border-color: #e2e8f0;
  --bs-link-color: var(--bs-primary);
  --bs-link-hover-color: #1d4ed8;

  --app-bg: var(--bs-body-bg);
  --app-surface: #ffffff;
  --app-surface-2: #fbfcff;
  --app-border: var(--bs-border-color);
  --app-text: var(--bs-body-color);
  --app-muted: #64748b;
  --app-muted-2: #94a3b8;
  --shadow-soft: 0 14px 36px rgba(15, 23, 42, 0.08);
  --shadow-card: 0 10px 24px rgba(15, 23, 42, 0.06);
}

*{ box-sizing: border-box; }

html, body{ height:100%; }

body.app-body{
  background: radial-gradient(1200px 600px at 20% 0%, rgba(37, 99, 235, 0.08), transparent 55%),
              radial-gradient(900px 500px at 90% 10%, rgba(22, 163, 74, 0.06), transparent 50%),
              var(--app-bg);
  color: var(--app-text);
  font-family: var(--bs-body-font-family);
}

/* -------- Navbar -------- */
.app-nav{
  background: rgba(255,255,255,0.86);
  border-bottom: 1px solid var(--app-border);
  backdrop-filter: blur(12px);
}

.navbar-brand{
  letter-spacing: -0.01em;
}

.brand-badge{
  width: 34px; height: 34px;
  border-radius: 12px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--bs-primary);
  background: linear-gradient(135deg, rgba(37,99,235,0.14), rgba(8,145,178,0.10));
  border: 1px solid rgba(37,99,235,0.20);
  box-shadow: 0 6px 14px rgba(37,99,235,0.12);
}

.navbar .nav-link{
  color: var(--app-muted);
  border-radius: 12px;
  padding: .5rem .75rem;
  margin-right: .25rem;
  transition: background .15s ease, color .15s ease, transform .15s ease;
}

.navbar .nav-link:hover{
  color: var(--app-text);
  background: rgba(37,99,235,0.08);
}

.navbar .nav-link.active,
.navbar .nav-link[aria-current="page"]{
  color: #1d4ed8;
  background: rgba(37,99,235,0.12);
  font-weight: 600;
}

.navbar .btn.btn-outline-secondary{
  border-color: rgba(100,116,139,0.35) !important;
}

.navbar .btn.btn-outline-secondary:hover{
  background: rgba(100,116,139,0.10) !important;
}

/* -------- Page header helpers -------- */
.page-header{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap: 1rem;
  margin-bottom: 1rem;
}

.page-title{
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0;
}

.page-subtitle{
  color: var(--app-muted);
  margin-top: .2rem;
}

/* -------- Cards -------- */
.card{
  background: var(--app-surface);
  border: 1px solid var(--app-border);
  border-radius: 16px;
  box-shadow: 0 1px 0 rgba(15,23,42,0.02);
}

.card .card-body{
  padding: 1.15rem;
}

.card:hover{
  box-shadow: var(--shadow-card);
}

.card .display-6{
  font-weight: 750;
  letter-spacing: -0.02em;
}

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

.table thead th{
  background: #f8fafc;
  color: #334155;
  font-weight: 700;
  border-bottom: 1px solid var(--app-border) !important;
}

.table td, .table th{
  vertical-align: middle;
  border-color: var(--app-border);
}

.table-hover tbody tr:hover{
  background: rgba(37,99,235,0.04);
}

/* -------- Forms -------- */
.form-control, .form-select{
  border-radius: 12px;
  border-color: var(--app-border);
}

.form-control:focus, .form-select:focus{
  border-color: rgba(37,99,235,0.45);
  box-shadow: 0 0 0 .25rem rgba(37,99,235,0.12);
}

.form-check-input{
  border-color: rgba(100,116,139,0.45);
}

.form-check-input:checked{
  background-color: var(--bs-primary);
  border-color: var(--bs-primary);
}

/* -------- Buttons -------- */
.btn{
  border-radius: 12px;
  font-weight: 600;
}

.btn-primary{
  box-shadow: 0 10px 22px rgba(37,99,235,0.16);
}

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

.btn-outline-primary{
  border-color: rgba(37,99,235,0.35);
}

.btn-outline-primary:hover{
  background: rgba(37,99,235,0.10);
  border-color: rgba(37,99,235,0.50);
}

/* -------- Badges -------- */
.badge-soft{
  color: #166534;
  border-radius: 999px;
  padding: .35rem .55rem;
  font-weight: 700;
  border: 1px solid transparent;
}

.badge-soft-success{
  color: #166534;
  background: rgba(22,163,74,0.12);
  border-color: rgba(22,163,74,0.20);
}

.badge-soft-danger{
  color: #991b1b;
  background: rgba(220,38,38,0.10);
  border-color: rgba(220,38,38,0.18);
}

.badge-soft-warning{
  color: #92400e;
  background: rgba(217,119,6,0.12);
  border-color: rgba(217,119,6,0.18);
}

.badge-soft-secondary{
  color: #334155;
  background: rgba(100,116,139,0.10);
  border-color: rgba(100,116,139,0.18);
}

/* -------- Alerts -------- */
.alert-modern{
  border-radius: 14px;
  border: 1px solid var(--app-border);
  box-shadow: 0 12px 26px rgba(15,23,42,0.06);
}

.alert-success{
  background: rgba(22,163,74,0.10);
  border-color: rgba(22,163,74,0.22);
  color: #14532d;
}

.alert-danger{
  background: rgba(220,38,38,0.08);
  border-color: rgba(220,38,38,0.18);
  color: #7f1d1d;
}

.alert-warning{
  background: rgba(217,119,6,0.10);
  border-color: rgba(217,119,6,0.22);
  color: #7c2d12;
}

.alert-info{
  background: rgba(8,145,178,0.10);
  border-color: rgba(8,145,178,0.20);
  color: #164e63;
}

/* -------- Misc -------- */
.small-muted{
  color: var(--app-muted);
}

.code{
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  font-size: .92em;
  padding: .08rem .35rem;
  border-radius: .5rem;
  background: rgba(100,116,139,0.10);
  border: 1px solid rgba(100,116,139,0.18);
}

.app-footer{
  color: var(--app-muted);
  border-top: 1px solid var(--app-border);
  background: rgba(255,255,255,0.55);
  backdrop-filter: blur(8px);
}

/* Pagination */
.pagination .page-link{
  border-radius: 12px !important;
  margin: 0 .15rem;
  border-color: var(--app-border);
  color: var(--app-muted);
}

.pagination .page-item.active .page-link{
  background: rgba(37,99,235,0.12);
  border-color: rgba(37,99,235,0.25);
  color: #1d4ed8;
  font-weight: 700;
}

/* Mobile spacing tweaks */
@media (max-width: 576px){
  .card .card-body{ padding: .95rem; }
  .page-title{ font-size: 1.18rem; }
  .navbar .nav-link{ margin-right: 0; }
}