:root {
  --tw-ink: #0f172a;
  --tw-muted: #475569;
  --tw-border: rgba(15, 23, 42, 0.12);
  --tw-surface: #ffffff;
  --tw-bg: #f8fafc;
  --tw-primary: #10b981;
  --tw-primary-dark: #059669;
  --tw-danger: #ef4444;
  --tw-warning: #f59e0b;
}

body {
  background: #f8fafc;
  color: var(--tw-ink);
}

/* Layout */
.container {
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 1rem;
  padding-right: 1rem;
}
.container-fluid {
  width: 100%;
  padding-left: 1rem;
  padding-right: 1rem;
}
.row {
  display: flex;
  flex-wrap: wrap;
  margin-left: -0.75rem;
  margin-right: -0.75rem;
}
.row > [class*="col-"] {
  padding-left: 0.75rem;
  padding-right: 0.75rem;
}

.col-12 { width: 100%; }
.col-6 { width: 50%; }
.col-4 { width: 33.3333%; }
.col-3 { width: 25%; }

@media (min-width: 576px) {
  .col-sm-6 { width: 50%; }
}
@media (min-width: 768px) {
  .col-md-4 { width: 33.3333%; }
  .col-md-6 { width: 50%; }
  .col-md-8 { width: 66.6667%; }
}
@media (min-width: 992px) {
  .col-lg-2 { width: 16.6667%; }
  .col-lg-3 { width: 25%; }
  .col-lg-4 { width: 33.3333%; }
}

/* Spacing helpers (subset) */
.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: 0.25rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-3 { margin-bottom: 1rem; }
.mb-4 { margin-bottom: 1.5rem; }
.mb-5 { margin-bottom: 2rem; }
.mt-2 { margin-top: 0.5rem; }
.mt-1 { margin-top: 0.25rem; }
.mt-3 { margin-top: 1rem; }
.mt-4 { margin-top: 1.5rem; }
.mt-5 { margin-top: 2rem; }
.py-4 { padding-top: 1.5rem; padding-bottom: 1.5rem; }
.py-5 { padding-top: 2rem; padding-bottom: 2rem; }
.py-2 { padding-top: 0.5rem; padding-bottom: 0.5rem; }
.px-2 { padding-left: 0.5rem; padding-right: 0.5rem; }
.px-3 { padding-left: 0.75rem; padding-right: 0.75rem; }
.me-2 { margin-right: 0.5rem; }
.ms-2 { margin-left: 0.5rem; }
.p-3 { padding: 1rem; }
.p-4 { padding: 1.5rem; }
.p-5 { padding: 2rem; }

/* Flex helpers */
.d-flex { display: flex; }
.d-inline-flex { display: inline-flex; }
.flex-wrap { flex-wrap: wrap; }
.flex-column { flex-direction: column; }
.flex-fill { flex: 1 1 0%; }
.align-items-center { align-items: center; }
.align-items-end { align-items: flex-end; }
.justify-content-between { justify-content: space-between; }
.justify-content-center { justify-content: center; }
.gap-2 { gap: 0.5rem; }
.gap-3 { gap: 0.75rem; }

/* Typography */
.text-muted { color: var(--tw-muted); }
.text-secondary { color: #64748b; }
.text-success { color: var(--tw-primary); }
.text-danger { color: var(--tw-danger); }
.text-dark { color: #111827; }
.text-white { color: #ffffff; }
.text-white-50 { color: rgba(255, 255, 255, 0.5); }
.text-white-75 { color: rgba(255, 255, 255, 0.75); }
.text-center { text-align: center; }
.text-end { text-align: right; }
.small { font-size: 0.875rem; }
.lead { font-size: 1.125rem; }
.display-4 { font-size: clamp(2rem, 4vw, 3rem); }
.fs-6 { font-size: 1rem; }
.fs-5 { font-size: 1.125rem; }
.fs-4 { font-size: 1.25rem; }
.fw-bold { font-weight: 700; }
.fw-semibold { font-weight: 600; }
.text-uppercase { text-transform: uppercase; }

/* Cards */
.card {
  background: var(--tw-surface);
  border: 1px solid var(--tw-border);
  border-radius: 1.25rem;
  box-shadow: 0 12px 28px rgba(2, 6, 23, 0.08);
}
.card-body { padding: 1.5rem; }
.card-header {
  background: rgba(255, 255, 255, 0.7);
  border-bottom: 1px solid var(--tw-border);
}
.shadow { box-shadow: 0 12px 28px rgba(2, 6, 23, 0.10); }
.shadow-sm { box-shadow: 0 8px 18px rgba(2, 6, 23, 0.08); }
.shadow-lg { box-shadow: 0 18px 40px rgba(2, 6, 23, 0.15); }
.border { border: 1px solid var(--tw-border); }
.border-0 { border: 0; }
.rounded { border-radius: 0.5rem; }
.rounded-4 { border-radius: 1.25rem; }
.rounded-3 { border-radius: 1rem; }
.rounded-circle { border-radius: 9999px; }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  font-weight: 700;
  border-radius: 0.9rem;
  padding: 0.65rem 1.1rem;
  border: 1px solid transparent;
  text-decoration: none;
  cursor: pointer;
}
.btn-lg { padding: 0.85rem 1.3rem; font-size: 1rem; }
.btn-sm { padding: 0.4rem 0.8rem; font-size: 0.85rem; }
.btn-success {
  background: var(--tw-primary);
  color: #fff;
  border-color: var(--tw-primary);
  box-shadow: 0 10px 22px rgba(16, 185, 129, 0.2);
}
.btn-success:hover { background: var(--tw-primary-dark); border-color: var(--tw-primary-dark); }
.btn-outline-success { color: var(--tw-primary); border-color: rgba(16, 185, 129, 0.4); background: transparent; }
.btn-outline-secondary { color: #475569; border-color: rgba(100, 116, 139, 0.4); background: transparent; }
.btn-outline-light { color: #fff; border-color: rgba(255, 255, 255, 0.6); background: transparent; }
.btn-light { background: #fff; color: var(--tw-ink); border-color: rgba(148, 163, 184, 0.3); }
.btn-danger { background: var(--tw-danger); color: #fff; border-color: var(--tw-danger); }
.btn-secondary { background: #334155; color: #fff; border-color: #334155; }
.btn-primary { background: #0ea5e9; color: #fff; border-color: #0ea5e9; }
.btn-warning { background: var(--tw-warning); color: #111827; border-color: var(--tw-warning); }

/* Forms */
.form-label { display: block; font-weight: 600; margin-bottom: 0.35rem; color: #334155; }
.form-control,
.form-select {
  width: 100%;
  border-radius: 0.85rem;
  border: 1px solid rgba(15, 23, 42, 0.16);
  padding: 0.65rem 0.85rem;
  background: #fff;
}
.form-control:focus,
.form-select:focus {
  outline: 2px solid rgba(16, 185, 129, 0.35);
  border-color: rgba(16, 185, 129, 0.6);
}
.input-group { display: flex; align-items: stretch; }
.input-group-text {
  display: inline-flex;
  align-items: center;
  padding: 0.65rem 0.85rem;
  background: #f1f5f9;
  border: 1px solid rgba(15, 23, 42, 0.16);
  border-right: 0;
  border-radius: 0.85rem 0 0 0.85rem;
}
.input-group .form-select,
.input-group .form-control {
  border-radius: 0 0.85rem 0.85rem 0;
}

/* Tables */
.table {
  width: 100%;
  border-collapse: collapse;
  background: #fff;
}
.table th,
.table td { padding: 0.75rem; border: 1px solid rgba(15, 23, 42, 0.12); }
.table-light th { background: #f8fafc; }
.table-bordered { border: 1px solid rgba(15, 23, 42, 0.12); }
.table-striped tbody tr:nth-child(odd) { background: #f8fafc; }
.table-hover tbody tr:hover { background: rgba(16, 185, 129, 0.08); }
.table-dark th { background: #0f172a; color: #fff; }
.table-success { background: rgba(16, 185, 129, 0.12); }
.table-primary { background: rgba(14, 165, 233, 0.12); }
.align-middle td { vertical-align: middle; }
.table-responsive { overflow-x: auto; }

/* Badges & Alerts */
.badge {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  padding: 0.25rem 0.6rem;
  font-size: 0.75rem;
  font-weight: 700;
}
.bg-success { background: var(--tw-primary); color: #fff; }
.bg-success.bg-opacity-10 { background: rgba(16, 185, 129, 0.1); color: var(--tw-primary); }
.bg-warning { background: var(--tw-warning); color: #111827; }
.bg-danger { background: var(--tw-danger); color: #fff; }
.bg-dangger { background: var(--tw-danger); color: #fff; }
.bg-secondary { background: #64748b; color: #fff; }
.bg-dark { background: #0f172a; color: #fff; }
.bg-primary { background: #0ea5e9; color: #fff; }
.bg-info { background: #38bdf8; color: #0f172a; }
.text-bg-success { background: var(--tw-primary); color: #fff; padding: 0.25rem 0.6rem; border-radius: 999px; font-size: 0.75rem; font-weight: 700; }
.bg-light { background: #f8fafc; }
.bg-opacity-10 { background-color: rgba(15, 23, 42, 0.08); }
.alert {
  padding: 0.85rem 1rem;
  border-radius: 0.85rem;
  border: 1px solid rgba(15, 23, 42, 0.12);
  background: #f8fafc;
}
.alert-secondary { background: #f1f5f9; }
.alert-info { background: #e0f2fe; border-color: rgba(56, 189, 248, 0.35); }

/* Misc */
.d-none { display: none !important; }
@media (min-width: 768px) {
  .d-md-block { display: block !important; }
  .flex-md-row { flex-direction: row; }
}

.text-decoration-none { text-decoration: none; }
.w-100 { width: 100%; }
.h-100 { height: 100%; }
.min-vh-100 { min-height: 100vh; }
.bg-gradient { background: linear-gradient(135deg, #e0eafc 0%, #cfdef3 100%); }
.app-soft-gradient { background: linear-gradient(135deg, #e0eafc 0%, #cfdef3 100%); }
.letter-spacing { letter-spacing: 0.08em; }