/* UTILITY CLASSES                            */
/* Reusable single-purpose helpers.           */
/* Convention: u-[property]-[value]           */

/* Display */
.u-hidden     { display: none !important; }
.u-block      { display: block; }
.u-flex       { display: flex; }
.u-inline-flex { display: inline-flex; }
.u-grid       { display: grid; }

/* Flexbox shortcuts */
.u-flex-col      { display: flex; flex-direction: column; }
.u-flex-center   { display: flex; align-items: center; }
.u-flex-between  { display: flex; align-items: center; justify-content: space-between; }
.u-flex-wrap     { flex-wrap: wrap; }
.u-flex-1        { flex: 1; }
.u-flex-shrink-0 { flex-shrink: 0; }
.u-items-start   { align-items: flex-start; }
.u-items-center  { align-items: center; }
.u-justify-center    { justify-content: center; }
.u-justify-between   { justify-content: space-between; }

/* Gap */
.u-gap-2  { gap: 2px; }
.u-gap-3  { gap: 3px; }
.u-gap-4  { gap: 4px; }
.u-gap-5  { gap: 5px; }
.u-gap-6  { gap: 6px; }
.u-gap-8  { gap: 8px; }
.u-gap-10 { gap: 10px; }
.u-gap-12 { gap: 12px; }
.u-gap-14 { gap: 14px; }
.u-gap-16 { gap: 16px; }

/* Text alignment */
.u-text-left   { text-align: left; }
.u-text-center { text-align: center; }
.u-text-right  { text-align: right; }

/* Font size */
.u-text-2xs { font-size: 9px; }
.u-text-xs  { font-size: 10px; }
.u-text-sm  { font-size: 11px; }
.u-text-base { font-size: 12px; }
.u-text-md  { font-size: 13px; }
.u-text-lg  { font-size: 14px; }
.u-text-xl  { font-size: 15px; }
.u-text-2xl { font-size: 16px; }
.u-text-3xl { font-size: 18px; }
.u-text-4xl { font-size: 20px; }
.u-text-5xl { font-size: 24px; }
.u-text-6xl { font-size: 36px; }

/* Font weight */
.u-font-normal   { font-weight: 400; }
.u-font-medium   { font-weight: 500; }
.u-font-semibold { font-weight: 600; }
.u-font-bold     { font-weight: 700; }

/* Text style helpers */
.u-uppercase  { text-transform: uppercase; }
.u-italic     { font-style: italic; }
.u-truncate   { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.u-pre-wrap   { white-space: pre-wrap; }
.u-mono       { font-family: monospace; }
.u-tracking   { letter-spacing: 0.04em; }
.u-tracking-wide { letter-spacing: 0.5px; }

/* Text colors */
.u-color-gray-300 { color: #d1d5db; }
.u-color-gray-400 { color: #9ca3af; }
.u-color-gray-500 { color: #6b7280; }
.u-color-gray-700 { color: #374151; }
.u-color-gray-800 { color: #1f2937; }
.u-color-gray-900 { color: #111827; }
.u-color-red      { color: #dc2626; }
.u-color-red-600  { color: #dc2626; }
.u-color-red-500  { color: #ef4444; }
.u-color-orange   { color: #d97706; }
.u-color-amber    { color: #f59e0b; }
.u-color-yellow   { color: #eab308; }
.u-color-green    { color: #16a34a; }
.u-color-green-600 { color: #059669; }
.u-color-emerald  { color: #10b981; }
.u-color-blue     { color: #3b82f6; }
.u-color-blue-700 { color: #1d4ed8; }
.u-color-indigo   { color: #6366f1; }
.u-color-purple   { color: #7c3aed; }
.u-color-white    { color: #fff; }

/* Background colors */
.u-bg-white    { background: #fff; }
.u-bg-gray-50  { background: #f9fafb; }
.u-bg-gray-100 { background: #f3f4f6; }
.u-bg-gray-200 { background: #e5e7eb; }
.u-bg-red-50   { background: #fef2f2; }
.u-bg-green-50 { background: #f0fdf4; }
.u-bg-blue-50  { background: #eff6ff; }
.u-bg-amber-50 { background: #fffbeb; }
.u-bg-amber-100 { background: #fef3c7; }

/* Padding */
.u-p-0   { padding: 0; }
.u-p-4   { padding: 4px; }
.u-p-8   { padding: 8px; }
.u-p-10  { padding: 10px; }
.u-p-12  { padding: 12px; }
.u-p-14  { padding: 14px; }
.u-p-16  { padding: 16px; }
.u-p-20  { padding: 20px; }
.u-p-24  { padding: 24px; }
.u-p-32  { padding: 32px; }
.u-px-8  { padding-left: 8px; padding-right: 8px; }
.u-px-12 { padding-left: 12px; padding-right: 12px; }
.u-px-14 { padding-left: 14px; padding-right: 14px; }
.u-px-16 { padding-left: 16px; padding-right: 16px; }
.u-px-20 { padding-left: 20px; padding-right: 20px; }
.u-py-0  { padding-top: 0; padding-bottom: 0; }
.u-py-4  { padding-top: 4px; padding-bottom: 4px; }
.u-py-8  { padding-top: 8px; padding-bottom: 8px; }
.u-py-12 { padding-top: 12px; padding-bottom: 12px; }
.u-py-16 { padding-top: 16px; padding-bottom: 16px; }
.u-py-40 { padding-top: 40px; padding-bottom: 40px; }
.u-py-64 { padding-top: 64px; padding-bottom: 64px; }
.u-pt-0  { padding-top: 0; }
.u-pt-8  { padding-top: 8px; }

/* Margin */
.u-m-0  { margin: 0; }
.u-mb-0  { margin-bottom: 0; }
.u-mb-2  { margin-bottom: 2px; }
.u-mb-4  { margin-bottom: 4px; }
.u-mb-8  { margin-bottom: 8px; }
.u-mb-10 { margin-bottom: 10px; }
.u-mb-12 { margin-bottom: 12px; }
.u-mb-16 { margin-bottom: 16px; }
.u-mb-20 { margin-bottom: 20px; }
.u-mt-0  { margin-top: 0; }
.u-mt-2  { margin-top: 2px; }
.u-mt-4  { margin-top: 4px; }
.u-mt-8  { margin-top: 8px; }
.u-mt-10 { margin-top: 10px; }
.u-mt-12 { margin-top: 12px; }
.u-mr-4  { margin-right: 4px; }
.u-mr-6  { margin-right: 6px; }
.u-mr-8  { margin-right: 8px; }
.u-ml-2  { margin-left: 2px; }
.u-ml-auto { margin-left: auto; }

/* Width / Height */
.u-w-full { width: 100%; }
.u-h-full { height: 100%; }
.u-min-w-0 { min-width: 0; }
.u-min-h-80 { min-height: 80px; }

/* Grid */
.u-col-span-full { grid-column: 1 / -1; }

/* Border / Radius */
.u-rounded-0   { border-radius: 0; }
.u-rounded-sm  { border-radius: 4px; }
.u-rounded     { border-radius: 6px; }
.u-rounded-md  { border-radius: 8px; }
.u-rounded-lg  { border-radius: 10px; }
.u-rounded-xl  { border-radius: 12px; }
.u-rounded-full { border-radius: 9999px; }
.u-border       { border: 1px solid #e5e7eb; }
.u-border-b     { border-bottom: 1px solid #e5e7eb; }
.u-border-t     { border-top: 1px solid #e5e7eb; }
.u-border-none  { border: none; }

/* Overflow */
.u-overflow-hidden { overflow: hidden; }
.u-overflow-auto   { overflow-y: auto; }
.u-overflow-x-auto { overflow-x: auto; }

/* Cursor */
.u-cursor-pointer    { cursor: pointer; }
.u-cursor-not-allowed { cursor: not-allowed; }

/* Position */
.u-relative { position: relative; }

/* Grid templates */
.u-grid-cols-3 { grid-template-columns: repeat(3, 1fr); }
.u-grid-cols-4 { grid-template-columns: repeat(4, 1fr); }

/* Skeleton / Shimmer (unified) */
.skl {
    background: linear-gradient(90deg, #e5e7eb 25%, #f3f4f6 50%, #e5e7eb 75%);
    background-size: 200% 100%;
    animation: skl-shimmer 1.2s ease-in-out infinite;
    border-radius: 4px;
    display: block;
}

@keyframes skl-shimmer {
    0%   { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* Skeleton size helpers */
.skl-circle { border-radius: 50%; }
.skl-pill   { border-radius: 99px; }
.skl-card   { border-radius: 6px; }
.skl-noshrink { flex-shrink: 0; }

/* Skeleton layout containers */
.skl-row {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 16px;
    border-bottom: 1px solid #f3f4f6;
}

.skl-stat-card {
    background: #fff;
    border-radius: 12px;
    padding: 14px 16px;
    display: flex;
    align-items: center;
    gap: 12px;
    border: 1.5px solid #f1f5f9;
}

.skl-page {
    padding: 20px;
    height: 100%;
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.skl-header-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.skl-col {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.skl-col-6 { gap: 6px; }

.skl-tabs {
    display: flex;
    gap: 8px;
}

.skl-avatar-row {
    display: flex;
    align-items: center;
    gap: 14px;
    padding-bottom: 16px;
    border-bottom: 1px solid #f1f5f9;
}

.skl-cal-cell {
    border: 1px solid #f0f2f5;
    padding: 6px 8px;
    min-height: 80px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.skl-cal-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
}

.skl-db-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 20px;
    border-bottom: 1px solid #f1f5f9;
}

.skl-flex-fill   { flex: 1; }
.skl-flex-fill-r { flex: 1; border-radius: 12px; min-height: 280px; }

/* Common component patterns */

/* Empty state */
.u-empty-state {
    text-align: center;
    padding: 48px 0;
    color: #9ca3af;
}
.u-empty-state i {
    font-size: 20px;
    display: block;
    margin-bottom: 8px;
}

/* Loading spinner block */
.u-loading-state {
    text-align: center;
    padding: 48px 0;
    color: #6b7280;
}
.u-loading-state i {
    font-size: 20px;
    display: block;
    margin-bottom: 8px;
}

/* Error state */
.u-error-state {
    text-align: center;
    padding: 48px 0;
    color: #dc2626;
}
.u-error-state i {
    font-size: 20px;
    display: block;
    margin-bottom: 8px;
}

/* Readonly input look */
.u-input-readonly {
    background: #f3f4f6;
    cursor: not-allowed;
}

/* Code tag */
.u-code {
    background: #f3f4f6;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 12px;
    font-family: monospace;
}

/* Pill badge base */
.u-pill {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 2px 8px;
    border-radius: 99px;
    font-size: 10px;
    font-weight: 600;
}

/* Item card (picker, service catalog) */
.u-card {
    border: 1px solid #e5e7eb;
    border-radius: 8px;
    padding: 12px;
    background: #fff;
    transition: all 0.15s;
}

/* Section heading with left accent bar */
.u-section-bar {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 2px solid #e5e7eb;
}

/* Required asterisk */
.u-required { color: #e53e3e; }

/* Faded secondary text after main text */
.u-hint {
    color: #9ca3af;
    font-weight: 400;
    font-size: 11px;
}

/* Summary box (used in payment dialogs) */
.u-summary-box {
    background: #f9fafb;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 12px 14px;
    margin-bottom: 16px;
}

.u-summary-row {
    display: flex;
    justify-content: space-between;
    font-size: 13px;
    margin-bottom: 8px;
}
.u-summary-row:last-child { margin-bottom: 0; }

.u-summary-total {
    display: flex;
    justify-content: space-between;
    font-size: 16px;
    font-weight: 700;
    padding-top: 8px;
    border-top: 2px solid #e5e7eb;
}

/* Modal widths */
.u-modal-sm { max-width: 380px; }
.u-modal-md { max-width: 420px; }
.u-modal-lg { max-width: 480px; }

/* Payment modal */
.pay-modal {
    width: 92%;
    max-width: 480px;
    padding: 0;
    text-align: left;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    max-height: calc(100vh - 40px);
}
.pay-modal .slide-panel-header { border-radius: 0; }
.pay-modal .prefilled-info-box { margin: 16px 20px 0; border-radius: 10px; }
.pay-modal .form-actions { padding-top: 0; margin-top: 0; }

/* Confirm button secondary (was missing) */
.confirm-btn-secondary {
    background: #f3f4f6;
    color: #374151;
}
.confirm-btn-secondary:hover { background: #e5e7eb; }

/* Panel header/footer pattern */
.u-panel-header {
    padding: 14px 20px;
    border-bottom: 1px solid #e5e7eb;
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
    background: #f8fafc;
}

.u-panel-footer {
    border-top: 1.5px solid #e5e7eb;
    padding: 12px 20px;
    display: flex;
    gap: 8px;
    flex-shrink: 0;
    background: #fff;
}

/* Back button (used in slide panel, picker) */
.u-back-btn {
    display: flex;
    align-items: center;
    gap: 5px;
    padding: 5px 10px;
    border: 1.5px solid #e2e8f0;
    border-radius: 7px;
    background: #fff;
    color: #374151;
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
}

/* Stepper button (qty +/−) */
.u-stepper-btn {
    width: 20px;
    height: 20px;
    border-radius: 4px;
    border: 1px solid #e2e8f0;
    background: #f8fafc;
    color: #374151;
    font-size: 12px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Category group heading */
.u-group-title {
    font-size: 10px;
    font-weight: 700;
    color: #9ca3af;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 8px;
}

/* Action button — gray cancel */
.u-btn-gray {
    background: #6b7280;
    color: #fff;
}
.u-btn-gray:hover { background: #4b5563; }

/* Quick POS button */
.u-btn-pos {
    display: flex;
    align-items: center;
    gap: 5px;
    padding: 0 12px;
    height: 32px;
    background: var(--calendar-green);
    color: #fff;
    border: none;
    border-radius: 12px;
    font-size: 0.78rem;
    font-weight: 600;
    cursor: pointer;
    font-family: inherit;
    transition: all 0.15s;
}

/* Provider color dot */
.u-provider-dot {
    display: inline-block;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    margin-right: 8px;
}

/* Bootstrap compat shim — the only Bootstrap classes still in live markup, verbatim from 5.3. */

/* Reboot leftovers: the app's `* { margin: 0 }` is specificity 0, so these element rules won and must stay. */
h1, h2, h3, h4, h5, h6 { margin-bottom: 0.5rem; line-height: 1.2; }

.d-flex        { display: flex !important; }
.d-none        { display: none !important; }
.d-block       { display: block !important; }
.align-items-center { align-items: center !important; }
.justify-content-between { justify-content: space-between !important; }
.flex-wrap     { flex-wrap: wrap !important; }
.gap-2         { gap: 0.5rem !important; }
.w-100         { width: 100% !important; }

.text-center   { text-align: center !important; }
.text-start    { text-align: left !important; }
.text-end      { text-align: right !important; }

.mt-1 { margin-top: 0.25rem !important; }
.mt-2 { margin-top: 0.5rem !important; }
.mt-3 { margin-top: 1rem !important; }
.mb-1 { margin-bottom: 0.25rem !important; }
.mb-2 { margin-bottom: 0.5rem !important; }
.mb-3 { margin-bottom: 1rem !important; }
.p-2  { padding: 0.5rem !important; }
.p-3  { padding: 1rem !important; }

.badge {
    display: inline-block;
    padding: 0.35em 0.65em;
    font-size: 0.75em;
    font-weight: 700;
    line-height: 1;
    color: #fff;
    text-align: center;
    white-space: nowrap;
    vertical-align: baseline;
    border-radius: 0.375rem;
}

/* Button variants base.css doesn't already define */
.btn-success { background-color: #198754; border-color: #198754; color: #fff; }
.btn-warning { background-color: #ffc107; border-color: #ffc107; color: #000; }
.btn-outline-secondary {
    color: #6c757d;
    background-color: transparent;
    border: 1px solid #6c757d;
}
.btn-outline-secondary:hover { color: #fff; background-color: #6c757d; }