/* =====================================================================
   KW Billing — Reusable components
   ===================================================================== */

/* ---------------------------------------------------------------------
   Buttons
   --------------------------------------------------------------------- */
.btn {
    --bs-btn-border-radius: var(--radius-sm);
    font-weight: 500;
    font-size: .9rem;
    padding: .5rem .95rem;
    min-height: var(--control-height);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: .4rem;
    transition: background-color .15s ease, border-color .15s ease, color .15s ease;
}

.btn-sm {
    min-height: 34px;
    padding: .3rem .65rem;
    font-size: .82rem;
}

.btn-lg {
    min-height: 50px;
    padding: .7rem 1.4rem;
    font-size: 1rem;
}

.btn-icon {
    min-width: var(--control-height);
    padding: .4rem;
    justify-content: center;
}
.btn-icon.btn-sm { min-width: 34px; }

.btn-primary {
    --bs-btn-bg: var(--primary);
    --bs-btn-border-color: var(--primary);
    --bs-btn-hover-bg: var(--primary-hover);
    --bs-btn-hover-border-color: var(--primary-hover);
    --bs-btn-active-bg: var(--primary-hover);
    --bs-btn-active-border-color: var(--primary-hover);
    --bs-btn-disabled-bg: var(--primary);
    --bs-btn-disabled-border-color: var(--primary);
}

.btn-success {
    --bs-btn-bg: var(--success);
    --bs-btn-border-color: var(--success);
    --bs-btn-hover-bg: #15803d;
    --bs-btn-hover-border-color: #15803d;
}

.btn-warning {
    --bs-btn-bg: var(--warning);
    --bs-btn-border-color: var(--warning);
    --bs-btn-color: #fff;
    --bs-btn-hover-bg: #b45309;
    --bs-btn-hover-border-color: #b45309;
    --bs-btn-hover-color: #fff;
}

.btn-danger {
    --bs-btn-bg: var(--danger);
    --bs-btn-border-color: var(--danger);
    --bs-btn-hover-bg: #b91c1c;
    --bs-btn-hover-border-color: #b91c1c;
}

.btn-outline-secondary {
    --bs-btn-color: var(--text-secondary);
    --bs-btn-border-color: var(--border);
    --bs-btn-hover-bg: var(--background);
    --bs-btn-hover-color: var(--text);
    --bs-btn-hover-border-color: #d1d5db;
    background: var(--surface);
}

.btn-light {
    background: var(--surface);
    border-color: var(--border);
    color: var(--text);
}
.btn-light:hover {
    background: var(--background);
    border-color: #d1d5db;
    color: var(--text);
}

.btn:disabled,
.btn.disabled {
    opacity: .6;
    cursor: not-allowed;
}

/* ---------------------------------------------------------------------
   Cards
   --------------------------------------------------------------------- */
.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.card-header {
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    padding: 14px 18px;
    font-weight: 600;
    border-radius: var(--radius-md) var(--radius-md) 0 0 !important;
}

.card-body { padding: 18px; }
.card-footer {
    background: var(--surface);
    border-top: 1px solid var(--border);
    padding: 14px 18px;
}

/* ---------------------------------------------------------------------
   Stat cards
   --------------------------------------------------------------------- */
.stat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 14px;
    margin-bottom: 22px;
}

.stat-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 16px 18px;
    box-shadow: var(--shadow-sm);
}

.stat-card .stat-label {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: .78rem;
    text-transform: uppercase;
    letter-spacing: .04em;
    color: var(--text-secondary);
    font-weight: 600;
    margin-bottom: 8px;
}

.stat-card .stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    line-height: 1.2;
    color: var(--text);
    word-break: break-word;
}

.stat-card .stat-hint {
    font-size: .78rem;
    color: var(--text-secondary);
    margin-top: 4px;
}

.stat-card.is-primary { border-left: 3px solid var(--primary); }
.stat-card.is-success { border-left: 3px solid var(--success); }
.stat-card.is-warning { border-left: 3px solid var(--warning); }
.stat-card.is-danger  { border-left: 3px solid var(--danger); }

/* ---------------------------------------------------------------------
   Badges
   --------------------------------------------------------------------- */
.badge {
    font-weight: 600;
    font-size: .72rem;
    letter-spacing: .02em;
    padding: .35em .6em;
    border-radius: 999px;
    text-transform: uppercase;
}

.badge-paid,
.badge-completed   { background: var(--success-light); color: var(--success); }

.badge-partial,
.badge-pending     { background: var(--warning-light); color: var(--warning); }

.badge-unpaid      { background: var(--danger-light);  color: var(--danger); }

.badge-cancelled   { background: #f3f4f6; color: var(--text-secondary); }

.badge-neutral     { background: var(--background); color: var(--text-secondary); }

/* ---------------------------------------------------------------------
   Forms
   --------------------------------------------------------------------- */
.form-label {
    font-size: .85rem;
    font-weight: 600;
    color: var(--text);
    margin-bottom: .35rem;
}

.form-control,
.form-select {
    min-height: var(--control-height);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: .92rem;
    padding: .5rem .75rem;
    color: var(--text);
    background-color: var(--surface);
}

.form-control:focus,
.form-select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, .12);
    outline: none;
}

.form-control::placeholder { color: #9ca3af; }

.form-control:disabled,
.form-select:disabled {
    background: var(--background);
    color: var(--text-secondary);
}

textarea.form-control { min-height: 90px; }

.input-group-text {
    background: var(--background);
    border: 1px solid var(--border);
    color: var(--text-secondary);
    min-height: var(--control-height);
    font-size: .92rem;
}

.form-text {
    font-size: .78rem;
    color: var(--text-secondary);
}

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

.is-invalid,
.form-control.is-invalid,
.form-select.is-invalid {
    border-color: var(--danger);
}
.invalid-feedback { font-size: .78rem; }

/* ---------------------------------------------------------------------
   Tables
   --------------------------------------------------------------------- */
.table {
    --bs-table-bg: transparent;
    margin-bottom: 0;
    font-size: .9rem;
    color: var(--text);
}

.table > thead > tr > th {
    background: var(--background);
    border-bottom: 1px solid var(--border);
    color: var(--text-secondary);
    font-weight: 600;
    font-size: .76rem;
    text-transform: uppercase;
    letter-spacing: .04em;
    padding: 11px 14px;
    white-space: nowrap;
}

.table > tbody > tr > td {
    border-bottom: 1px solid var(--border);
    padding: 12px 14px;
    vertical-align: middle;
}

.table > tbody > tr:last-child > td { border-bottom: 0; }

.table-hover > tbody > tr:hover > td { background: var(--background); }

.table-wrap {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    border-radius: var(--radius-md);
}

/* ---------------------------------------------------------------------
   Alerts
   --------------------------------------------------------------------- */
.alert {
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    font-size: .9rem;
    padding: .75rem 1rem;
}

.alert-danger {
    background: var(--danger-light);
    border-color: #fecaca;
    color: #991b1b;
}
.alert-success {
    background: var(--success-light);
    border-color: #bbf7d0;
    color: #166534;
}
.alert-warning {
    background: var(--warning-light);
    border-color: #fde68a;
    color: #92400e;
}
.alert-info {
    background: var(--primary-light);
    border-color: #bfdbfe;
    color: #1e40af;
}

/* ---------------------------------------------------------------------
   Empty state
   --------------------------------------------------------------------- */
.empty-state {
    text-align: center;
    padding: 48px 20px;
    color: var(--text-secondary);
}

.empty-state i {
    font-size: 2.5rem;
    color: #cbd5e1;
    display: block;
    margin-bottom: 12px;
}

.empty-state h3 {
    font-size: 1rem;
    color: var(--text);
    margin-bottom: 6px;
}

.empty-state p {
    font-size: .88rem;
    margin-bottom: 16px;
}

/* ---------------------------------------------------------------------
   Loading
   --------------------------------------------------------------------- */
.loading-block {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 40px 16px;
    color: var(--text-secondary);
    font-size: .88rem;
}

.skeleton {
    background: linear-gradient(90deg, #eef2f6 25%, #e2e8f0 37%, #eef2f6 63%);
    background-size: 400% 100%;
    animation: skeleton-shimmer 1.4s ease infinite;
    border-radius: var(--radius-sm);
    height: 14px;
}

@keyframes skeleton-shimmer {
    0%   { background-position: 100% 50%; }
    100% { background-position: 0 50%; }
}

/* ---------------------------------------------------------------------
   Dividers / misc
   --------------------------------------------------------------------- */
.section-title {
    font-size: .78rem;
    text-transform: uppercase;
    letter-spacing: .05em;
    font-weight: 700;
    color: var(--text-secondary);
    margin: 0 0 10px;
}

.money { font-variant-numeric: tabular-nums; white-space: nowrap; }
.money-due { color: var(--danger); font-weight: 600; }
.money-paid { color: var(--success); font-weight: 600; }

.mono { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }

.divider { height: 1px; background: var(--border); border: 0; margin: 16px 0; }

/* SweetAlert2 tone alignment */
.swal2-popup { font-family: inherit; border-radius: var(--radius-md); }
.swal2-title { font-size: 1.1rem !important; }
.swal2-styled.swal2-confirm { background-color: var(--primary) !important; }
.swal2-styled.swal2-cancel { background-color: #6b7280 !important; }