/* ==========================================================================
   HK Design System -- Notion-inspired, enterprise-grade.
   Stylesheet duy nhất cho website đặt lịch nha khoa.
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Design Tokens
   -------------------------------------------------------------------------- */
:root {
    /* Typography */
    --hk-font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --hk-font-size-xs: 12px;
    --hk-font-size-sm: 13px;
    --hk-font-size-base: 14px;
    --hk-font-size-md: 15px;
    --hk-font-size-lg: 16px;
    --hk-font-size-xl: 18px;
    --hk-font-size-2xl: 20px;
    --hk-font-size-3xl: 24px;
    --hk-font-size-4xl: 32px;

    /* Color -- Light theme */
    --hk-text-primary: #37352f;
    --hk-text-secondary: rgba(55, 53, 47, 0.65);
    --hk-text-muted: rgba(55, 53, 47, 0.5);
    --hk-text-hint: rgba(55, 53, 47, 0.35);
    --hk-bg-page: #ffffff;
    --hk-bg-surface: #ffffff;
    --hk-bg-surface-raised: #ffffff;
    --hk-bg-hover: rgba(55, 53, 47, 0.06);
    --hk-bg-active: rgba(55, 53, 47, 0.12);
    --hk-bg-subtle: #fafaf9;
    --hk-border-light: rgba(55, 53, 47, 0.09);
    --hk-border-default: rgba(55, 53, 47, 0.16);
    --hk-border-strong: rgba(55, 53, 47, 0.3);
    --hk-icon-default: rgba(55, 53, 47, 0.55);
    --hk-icon-muted: rgba(55, 53, 47, 0.35);

    /* Brand + semantics */
    --hk-color-primary: #111827;
    --hk-color-primary-hover: #000000;
    --hk-color-accent: #0ea5a4; /* teal -- nha khoa, sạch, không loè */
    --hk-color-accent-hover: #0d9488;
    --hk-color-accent-soft: rgba(14, 165, 164, 0.1);
    --hk-color-success: #059669;
    --hk-color-success-soft: rgba(5, 150, 105, 0.12);
    --hk-color-danger: #dc2626;
    --hk-color-danger-soft: rgba(220, 38, 38, 0.1);
    --hk-color-warning: #d97706;
    --hk-color-warning-soft: rgba(217, 119, 6, 0.12);
    --hk-color-info: #0891b2;
    --hk-color-info-soft: rgba(8, 145, 178, 0.12);

    /* Shape */
    --hk-radius-sm: 4px;
    --hk-radius-md: 6px;
    --hk-radius-lg: 8px;
    --hk-radius-xl: 12px;
    --hk-radius-full: 9999px;

    /* Shadow */
    --hk-shadow-card: rgba(15, 15, 15, 0.08) 0 0 0 1px;
    --hk-shadow-sm: rgba(15, 15, 15, 0.05) 0 0 0 1px, rgba(15, 15, 15, 0.08) 0 3px 6px;
    --hk-shadow-md: rgba(15, 15, 15, 0.05) 0 0 0 1px, rgba(15, 15, 15, 0.1) 0 5px 10px,
        rgba(15, 15, 15, 0.15) 0 15px 40px;

    /* Spacing rhythm (used sparingly via utility classes) */
    --hk-space-xs: 4px;
    --hk-space-sm: 8px;
    --hk-space-md: 12px;
    --hk-space-lg: 16px;
    --hk-space-xl: 24px;
    --hk-space-2xl: 32px;
    --hk-space-3xl: 48px;

    /* Motion */
    --hk-duration-fast: 120ms;
    --hk-duration-normal: 200ms;
    --hk-ease-out: cubic-bezier(0.16, 1, 0.3, 1);

    /* Bootstrap overrides (used by .form-control, .alert, .table v.v.) */
    --bs-body-bg: var(--hk-bg-page);
    --bs-body-color: var(--hk-text-primary);
    --bs-border-color: var(--hk-border-default);
    --bs-link-color: var(--hk-color-accent);
    --bs-link-hover-color: var(--hk-color-accent-hover);
}

[data-theme='dark'] {
    --hk-text-primary: rgba(255, 255, 255, 0.86);
    --hk-text-secondary: rgba(255, 255, 255, 0.6);
    --hk-text-muted: rgba(255, 255, 255, 0.45);
    --hk-text-hint: rgba(255, 255, 255, 0.3);
    --hk-bg-page: #1a1a1a;
    --hk-bg-surface: #202020;
    --hk-bg-surface-raised: #2a2a2a;
    --hk-bg-hover: rgba(255, 255, 255, 0.06);
    --hk-bg-active: rgba(255, 255, 255, 0.12);
    --hk-bg-subtle: #252525;
    --hk-border-light: rgba(255, 255, 255, 0.08);
    --hk-border-default: rgba(255, 255, 255, 0.14);
    --hk-border-strong: rgba(255, 255, 255, 0.28);
    --hk-icon-default: rgba(255, 255, 255, 0.6);
    --hk-icon-muted: rgba(255, 255, 255, 0.35);
    --hk-color-primary: #f3f4f6;
    --hk-color-primary-hover: #ffffff;
    --hk-color-accent: #2dd4bf;
    --hk-color-accent-hover: #5eead4;
    --hk-color-accent-soft: rgba(45, 212, 191, 0.12);
    --hk-color-success: #34d399;
    --hk-color-success-soft: rgba(52, 211, 153, 0.14);
    --hk-color-danger: #f87171;
    --hk-color-danger-soft: rgba(248, 113, 113, 0.14);
    --hk-color-warning: #fbbf24;
    --hk-color-warning-soft: rgba(251, 191, 36, 0.14);
    --hk-color-info: #38bdf8;
    --hk-color-info-soft: rgba(56, 189, 248, 0.14);
    --hk-shadow-card: rgba(255, 255, 255, 0.07) 0 0 0 1px;
    --hk-shadow-sm: rgba(255, 255, 255, 0.06) 0 0 0 1px, rgba(0, 0, 0, 0.4) 0 3px 6px;
    --hk-shadow-md: rgba(255, 255, 255, 0.06) 0 0 0 1px, rgba(0, 0, 0, 0.45) 0 8px 18px;

    --bs-body-bg: var(--hk-bg-page);
    --bs-body-color: var(--hk-text-primary);
    --bs-border-color: var(--hk-border-default);
}

/* --------------------------------------------------------------------------
   2. Reset + Base
   -------------------------------------------------------------------------- */
*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--hk-font-sans);
    font-size: var(--hk-font-size-base);
    line-height: 1.55;
    color: var(--hk-text-primary);
    background: var(--hk-bg-page);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    transition: background-color var(--hk-duration-normal) var(--hk-ease-out);
}

h1,
h2,
h3,
h4,
h5,
h6 {
    color: var(--hk-text-primary);
    font-weight: 600;
    letter-spacing: -0.011em;
    margin: 0;
}

p {
    margin: 0;
}

a {
    color: var(--hk-color-accent);
    text-decoration: none;
    transition: color var(--hk-duration-fast) var(--hk-ease-out);
}

a:hover {
    color: var(--hk-color-accent-hover);
}

/* Material Symbols sizing tweak */
.material-symbols-rounded {
    font-variation-settings: 'opsz' 20, 'wght' 400, 'FILL' 0, 'GRAD' 0;
    vertical-align: middle;
    line-height: 1;
    user-select: none;
}

.material-symbols-rounded.is-filled {
    font-variation-settings: 'opsz' 20, 'wght' 500, 'FILL' 1, 'GRAD' 0;
}

/* --------------------------------------------------------------------------
   3. Layout primitives
   -------------------------------------------------------------------------- */
.hk-shell {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.hk-main {
    flex: 1 1 auto;
    padding-top: 24px;
    padding-bottom: 64px;
}

.hk-container {
    width: 100%;
    max-width: 1180px;
    margin: 0 auto;
    padding: 0 24px;
}

@media (max-width: 768px) {
    .hk-container {
        padding: 0 16px;
    }
}

.hk-stack {
    display: flex;
    flex-direction: column;
}

.hk-stack > * + * {
    margin-top: var(--hk-stack-gap, 16px);
}

/* --------------------------------------------------------------------------
   4. Navbar
   -------------------------------------------------------------------------- */
.hk-navbar {
    position: sticky;
    top: 0;
    z-index: 1020;
    background: var(--hk-bg-surface);
    border-bottom: 1px solid var(--hk-border-light);
    backdrop-filter: saturate(180%) blur(8px);
}

.hk-navbar__inner {
    height: 56px;
    display: flex;
    align-items: center;
    gap: 24px;
}

.hk-navbar__brand {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: var(--hk-font-size-md);
    font-weight: 600;
    color: var(--hk-text-primary);
    letter-spacing: -0.01em;
}

.hk-navbar__brand:hover {
    color: var(--hk-text-primary);
}

.hk-navbar__brand .material-symbols-rounded {
    color: var(--hk-color-accent);
    font-variation-settings: 'opsz' 24, 'wght' 500, 'FILL' 1, 'GRAD' 0;
    font-size: 24px;
}

.hk-navbar__nav {
    display: flex;
    align-items: center;
    gap: 4px;
    list-style: none;
    margin: 0;
    padding: 0;
}

.hk-navbar__link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 10px;
    border-radius: var(--hk-radius-md);
    color: var(--hk-text-secondary);
    font-size: var(--hk-font-size-sm);
    font-weight: 500;
    transition: background-color var(--hk-duration-fast) var(--hk-ease-out),
        color var(--hk-duration-fast) var(--hk-ease-out);
}

.hk-navbar__link:hover {
    background: var(--hk-bg-hover);
    color: var(--hk-text-primary);
}

.hk-navbar__link.is-active {
    color: var(--hk-text-primary);
    box-shadow: inset 0 -2px 0 0 var(--hk-color-accent);
    border-radius: 0;
}

.hk-navbar__spacer {
    flex: 1 1 auto;
}

.hk-navbar__actions {
    display: flex;
    align-items: center;
    gap: 8px;
    list-style: none;
    margin: 0;
    padding: 0;
}

.hk-navbar__user {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 4px 10px 4px 4px;
    border-radius: var(--hk-radius-full);
    background: transparent;
    border: 1px solid var(--hk-border-light);
    color: var(--hk-text-primary);
    font-size: var(--hk-font-size-sm);
    font-weight: 500;
    cursor: pointer;
}

.hk-navbar__user:hover {
    background: var(--hk-bg-hover);
    color: var(--hk-text-primary);
}

.hk-navbar__avatar {
    width: 24px;
    height: 24px;
    border-radius: var(--hk-radius-full);
    background: var(--hk-color-accent-soft);
    color: var(--hk-color-accent);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
}

.hk-theme-toggle {
    background: transparent;
    border: 1px solid var(--hk-border-light);
    color: var(--hk-icon-default);
    width: 32px;
    height: 32px;
    border-radius: var(--hk-radius-md);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background-color var(--hk-duration-fast) var(--hk-ease-out),
        color var(--hk-duration-fast) var(--hk-ease-out);
}

.hk-theme-toggle:hover {
    background: var(--hk-bg-hover);
    color: var(--hk-text-primary);
}

.hk-theme-toggle .material-symbols-rounded {
    font-size: 18px;
}

[data-theme='light'] .hk-theme-toggle__icon--dark {
    display: inline-block;
}

[data-theme='light'] .hk-theme-toggle__icon--light {
    display: none;
}

[data-theme='dark'] .hk-theme-toggle__icon--dark {
    display: none;
}

[data-theme='dark'] .hk-theme-toggle__icon--light {
    display: inline-block;
}

.hk-navbar__menu {
    background: var(--hk-bg-surface-raised);
    border: 1px solid var(--hk-border-default);
    border-radius: var(--hk-radius-lg);
    box-shadow: var(--hk-shadow-md);
    padding: 4px;
    min-width: 180px;
    margin-top: 8px;
}

.hk-navbar__menu .dropdown-item,
.hk-navbar__menu button.dropdown-item {
    width: 100%;
    text-align: left;
    background: transparent;
    border: 0;
    padding: 8px 10px;
    border-radius: var(--hk-radius-md);
    color: var(--hk-text-primary);
    font-size: var(--hk-font-size-sm);
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.hk-navbar__menu .dropdown-item:hover,
.hk-navbar__menu button.dropdown-item:hover {
    background: var(--hk-bg-hover);
    color: var(--hk-text-primary);
}

/* --------------------------------------------------------------------------
   5. Page header / titles
   -------------------------------------------------------------------------- */
.hk-page-header {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 24px;
}

.hk-page-title {
    font-size: var(--hk-font-size-3xl);
    font-weight: 700;
    color: var(--hk-text-primary);
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.hk-page-subtitle {
    margin-top: 4px;
    font-size: var(--hk-font-size-sm);
    color: var(--hk-text-secondary);
}

.hk-section-title {
    font-size: var(--hk-font-size-xl);
    font-weight: 600;
    color: var(--hk-text-primary);
    letter-spacing: -0.012em;
    margin-bottom: 12px;
}

.hk-eyebrow {
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-size: var(--hk-font-size-xs);
    color: var(--hk-text-muted);
    font-weight: 600;
}

/* --------------------------------------------------------------------------
   6. Hero (no gradient -- subtle surface + restrained accent)
   -------------------------------------------------------------------------- */
.hk-hero {
    background: var(--hk-bg-subtle);
    border: 1px solid var(--hk-border-light);
    border-radius: var(--hk-radius-xl);
    padding: 48px 40px;
    margin-bottom: 32px;
    position: relative;
    overflow: hidden;
}

.hk-hero::before {
    content: '';
    position: absolute;
    top: -120px;
    right: -120px;
    width: 320px;
    height: 320px;
    border-radius: 50%;
    background: var(--hk-color-accent-soft);
    pointer-events: none;
    z-index: 0;
}

.hk-hero__inner {
    position: relative;
    z-index: 1;
    max-width: 720px;
}

.hk-hero__eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: var(--hk-bg-surface);
    border: 1px solid var(--hk-border-light);
    color: var(--hk-color-accent);
    border-radius: var(--hk-radius-full);
    padding: 4px 12px;
    font-size: var(--hk-font-size-xs);
    font-weight: 600;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    margin-bottom: 16px;
}

.hk-hero__eyebrow .material-symbols-rounded {
    font-size: 14px;
}

.hk-hero__title {
    font-size: clamp(28px, 4vw, 40px);
    font-weight: 700;
    line-height: 1.15;
    letter-spacing: -0.025em;
    color: var(--hk-text-primary);
    margin-bottom: 12px;
}

.hk-hero__subtitle {
    font-size: var(--hk-font-size-lg);
    color: var(--hk-text-secondary);
    line-height: 1.55;
    margin-bottom: 24px;
}

.hk-hero__meta {
    display: flex;
    flex-wrap: wrap;
    gap: 16px 24px;
    margin-top: 20px;
    color: var(--hk-text-muted);
    font-size: var(--hk-font-size-sm);
}

.hk-hero__meta-item {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.hk-hero__meta-item .material-symbols-rounded {
    font-size: 16px;
    color: var(--hk-color-accent);
}

/* --------------------------------------------------------------------------
   7. Buttons
   -------------------------------------------------------------------------- */
.hk-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    font-family: inherit;
    font-size: var(--hk-font-size-sm);
    font-weight: 500;
    line-height: 1;
    padding: 9px 16px;
    border-radius: var(--hk-radius-md);
    border: 1px solid transparent;
    cursor: pointer;
    text-decoration: none;
    transition: background-color var(--hk-duration-fast) var(--hk-ease-out),
        color var(--hk-duration-fast) var(--hk-ease-out),
        border-color var(--hk-duration-fast) var(--hk-ease-out),
        transform var(--hk-duration-fast) var(--hk-ease-out);
    white-space: nowrap;
    user-select: none;
}

.hk-btn:focus,
.hk-btn:focus-visible {
    outline: none;
    box-shadow: 0 0 0 2px var(--hk-bg-page), 0 0 0 4px var(--hk-border-strong);
}

.hk-btn:active {
    transform: translateY(1px);
}

.hk-btn .material-symbols-rounded {
    font-size: 16px;
}

.hk-btn--primary {
    background: var(--hk-color-primary);
    color: #ffffff;
    border-color: var(--hk-color-primary);
}

.hk-btn--primary:hover {
    background: var(--hk-color-primary-hover);
    color: #ffffff;
}

[data-theme='dark'] .hk-btn--primary {
    color: #111827;
}

[data-theme='dark'] .hk-btn--primary:hover {
    color: #111827;
}

.hk-btn--accent {
    background: var(--hk-color-accent);
    color: #ffffff;
    border-color: var(--hk-color-accent);
}

.hk-btn--accent:hover {
    background: var(--hk-color-accent-hover);
    color: #ffffff;
}

[data-theme='dark'] .hk-btn--accent {
    color: #0b1f1d;
}

.hk-btn--ghost {
    background: transparent;
    color: var(--hk-text-primary);
    border-color: var(--hk-border-default);
}

.hk-btn--ghost:hover {
    background: var(--hk-bg-hover);
    color: var(--hk-text-primary);
}

.hk-btn--subtle {
    background: var(--hk-bg-subtle);
    color: var(--hk-text-primary);
    border-color: var(--hk-border-light);
}

.hk-btn--subtle:hover {
    background: var(--hk-bg-hover);
}

.hk-btn--danger {
    background: transparent;
    color: var(--hk-color-danger);
    border-color: var(--hk-border-default);
}

.hk-btn--danger:hover {
    background: var(--hk-color-danger-soft);
    color: var(--hk-color-danger);
    border-color: var(--hk-color-danger-soft);
}

.hk-btn--link {
    background: transparent;
    border: 0;
    color: var(--hk-text-secondary);
    padding: 6px 4px;
}

.hk-btn--link:hover {
    color: var(--hk-text-primary);
    background: transparent;
}

.hk-btn--sm {
    padding: 6px 12px;
    font-size: var(--hk-font-size-xs);
}

.hk-btn--lg {
    padding: 12px 22px;
    font-size: var(--hk-font-size-md);
}

.hk-btn--block {
    width: 100%;
}

/* --------------------------------------------------------------------------
   8. Surface / Card
   -------------------------------------------------------------------------- */
.hk-surface {
    background: var(--hk-bg-surface);
    border-radius: var(--hk-radius-lg);
    box-shadow: var(--hk-shadow-card);
    padding: 20px;
}

.hk-surface--elevated {
    box-shadow: var(--hk-shadow-sm);
}

.hk-surface--padded {
    padding: 28px;
}

.hk-surface--inset {
    background: var(--hk-bg-subtle);
    box-shadow: inset 0 0 0 1px var(--hk-border-light);
}

.hk-card {
    background: var(--hk-bg-surface);
    border-radius: var(--hk-radius-lg);
    box-shadow: var(--hk-shadow-card);
    overflow: hidden;
    transition: box-shadow var(--hk-duration-normal) var(--hk-ease-out),
        transform var(--hk-duration-normal) var(--hk-ease-out);
    display: flex;
    flex-direction: column;
}

.hk-card__header,
.hk-card__body,
.hk-card__footer {
    padding: 16px 20px;
}

.hk-card__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--hk-border-light);
    font-weight: 600;
    color: var(--hk-text-primary);
    background: var(--hk-bg-surface);
}

.hk-card__body {
    flex: 1 1 auto;
}

.hk-card__footer {
    border-top: 1px solid var(--hk-border-light);
    background: var(--hk-bg-surface);
    display: flex;
    align-items: center;
    gap: 8px;
}

.hk-card--service {
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    height: 100%;
}

.hk-card--service:hover {
    box-shadow: var(--hk-shadow-sm);
    transform: translateY(-1px);
}

.hk-card--staff {
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    height: 100%;
}

/* --------------------------------------------------------------------------
   9. Form
   -------------------------------------------------------------------------- */
.hk-field {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-bottom: 18px;
}

.hk-field__label {
    font-size: var(--hk-font-size-sm);
    color: var(--hk-text-secondary);
    font-weight: 500;
    letter-spacing: 0.005em;
}

.hk-field__hint {
    font-size: var(--hk-font-size-xs);
    color: var(--hk-text-muted);
}

/* Bootstrap form-control overrides */
.form-control,
.form-select {
    background-color: var(--hk-bg-surface);
    border: 1px solid var(--hk-border-default);
    color: var(--hk-text-primary);
    border-radius: var(--hk-radius-md);
    padding: 9px 12px;
    font-size: var(--hk-font-size-sm);
    line-height: 1.4;
    box-shadow: none;
    transition: border-color var(--hk-duration-fast) var(--hk-ease-out),
        background-color var(--hk-duration-fast) var(--hk-ease-out);
}

.form-control::placeholder {
    color: var(--hk-text-hint);
}

.form-control:hover,
.form-select:hover {
    border-color: var(--hk-border-strong);
}

.form-control:focus,
.form-select:focus {
    background-color: var(--hk-bg-surface);
    border-color: var(--hk-border-strong);
    color: var(--hk-text-primary);
    outline: none;
    box-shadow: none !important;
}

.form-text {
    color: var(--hk-text-muted);
    font-size: var(--hk-font-size-xs);
    margin-top: 4px;
}

.form-label {
    color: var(--hk-text-secondary);
    font-size: var(--hk-font-size-sm);
    font-weight: 500;
    margin-bottom: 6px;
}

.form-check {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding-left: 0;
}

.form-check-input {
    width: 16px;
    height: 16px;
    border: 1px solid var(--hk-border-default);
    background-color: var(--hk-bg-surface);
    border-radius: var(--hk-radius-sm);
    margin: 0;
    box-shadow: none !important;
    cursor: pointer;
    flex-shrink: 0;
}

.form-check-input:focus {
    outline: none;
    box-shadow: none !important;
    border-color: var(--hk-border-strong);
}

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

.form-check-label {
    font-size: var(--hk-font-size-sm);
    color: var(--hk-text-primary);
    cursor: pointer;
    margin: 0;
}

/* --------------------------------------------------------------------------
   10. Alerts (giữ class .alert-success / .alert-danger -- Playwright dùng)
   -------------------------------------------------------------------------- */
.alert {
    border-radius: var(--hk-radius-md);
    padding: 12px 16px 12px 14px;
    border: 0;
    border-left: 3px solid transparent;
    font-size: var(--hk-font-size-sm);
    line-height: 1.5;
    margin-bottom: 16px;
    display: flex;
    align-items: flex-start;
    gap: 10px;
    color: var(--hk-text-primary);
    background: var(--hk-bg-subtle);
}

.alert .material-symbols-rounded {
    font-size: 18px;
    margin-top: 1px;
    flex-shrink: 0;
}

.alert > .alert-body {
    flex: 1 1 auto;
    min-width: 0;
}

.alert > .alert-body ul {
    margin: 4px 0 0 18px;
    padding: 0;
}

.alert .btn-close {
    margin-left: auto;
    background: none;
    border: 0;
    width: 18px;
    height: 18px;
    padding: 0;
    color: var(--hk-text-muted);
    opacity: 1;
    cursor: pointer;
}

.alert .btn-close::before {
    content: '\00d7';
    font-size: 18px;
    line-height: 1;
}

.alert-success {
    background: var(--hk-color-success-soft);
    border-left-color: var(--hk-color-success);
    color: var(--hk-text-primary);
}

.alert-success .material-symbols-rounded {
    color: var(--hk-color-success);
}

.alert-danger {
    background: var(--hk-color-danger-soft);
    border-left-color: var(--hk-color-danger);
    color: var(--hk-text-primary);
}

.alert-danger .material-symbols-rounded {
    color: var(--hk-color-danger);
}

/* --------------------------------------------------------------------------
   11. Badges (.badge giữ tên cho Playwright; các biến thể custom hk-badge--*)
   -------------------------------------------------------------------------- */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 2px 8px;
    font-size: var(--hk-font-size-xs);
    font-weight: 500;
    line-height: 1.4;
    border-radius: var(--hk-radius-sm);
    background: var(--hk-bg-subtle);
    color: var(--hk-text-secondary);
    letter-spacing: 0.005em;
    border: 0;
    text-transform: none;
    white-space: nowrap;
}

.badge .material-symbols-rounded {
    font-size: 12px;
}

.hk-badge--pending {
    background: var(--hk-color-warning-soft);
    color: var(--hk-color-warning);
}

.hk-badge--confirmed {
    background: var(--hk-color-info-soft);
    color: var(--hk-color-info);
}

.hk-badge--done {
    background: var(--hk-color-success-soft);
    color: var(--hk-color-success);
}

.hk-badge--cancelled {
    background: var(--hk-bg-hover);
    color: var(--hk-text-secondary);
}

.hk-badge--no-show {
    background: var(--hk-color-danger-soft);
    color: var(--hk-color-danger);
}

.hk-badge--success {
    background: var(--hk-color-success-soft);
    color: var(--hk-color-success);
}

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

.hk-badge--accent {
    background: var(--hk-color-accent-soft);
    color: var(--hk-color-accent);
}

.hk-badge--soft {
    background: var(--hk-bg-subtle);
    color: var(--hk-text-secondary);
}

/* --------------------------------------------------------------------------
   12. Table
   -------------------------------------------------------------------------- */
.table {
    width: 100%;
    color: var(--hk-text-primary);
    margin-bottom: 0;
    border-color: var(--hk-border-light);
    --bs-table-bg: transparent;
    --bs-table-color: var(--hk-text-primary);
    --bs-table-border-color: var(--hk-border-light);
    --bs-table-striped-bg: var(--hk-bg-subtle);
    --bs-table-striped-color: var(--hk-text-primary);
    --bs-table-hover-bg: var(--hk-bg-hover);
    --bs-table-hover-color: var(--hk-text-primary);
}

.table > thead {
    background: var(--hk-bg-subtle);
}

.table > thead th {
    font-size: var(--hk-font-size-xs);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--hk-text-muted);
    font-weight: 600;
    padding: 10px 14px;
    border-bottom: 1px solid var(--hk-border-light);
    background: var(--hk-bg-subtle);
}

.table > tbody td {
    padding: 12px 14px;
    border-bottom: 1px solid var(--hk-border-light);
    color: var(--hk-text-primary);
    font-size: var(--hk-font-size-sm);
    vertical-align: middle;
    background: transparent;
}

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

.table-light,
.table > thead.table-light {
    background: var(--hk-bg-subtle);
    --bs-table-bg: var(--hk-bg-subtle);
    --bs-table-color: var(--hk-text-secondary);
}

.table-responsive {
    border-radius: var(--hk-radius-lg);
    overflow: hidden;
    border: 1px solid var(--hk-border-light);
    background: var(--hk-bg-surface);
}

/* --------------------------------------------------------------------------
   13. Stat cards (admin dashboard)
   -------------------------------------------------------------------------- */
.hk-stat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 12px;
    margin-bottom: 24px;
}

.hk-stat {
    background: var(--hk-bg-surface);
    border-radius: var(--hk-radius-lg);
    box-shadow: var(--hk-shadow-card);
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.hk-stat__head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
}

.hk-stat__icon {
    width: 32px;
    height: 32px;
    border-radius: var(--hk-radius-md);
    background: var(--hk-bg-subtle);
    color: var(--hk-icon-default);
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.hk-stat__icon .material-symbols-rounded {
    font-size: 18px;
}

.hk-stat__icon--accent {
    background: var(--hk-color-accent-soft);
    color: var(--hk-color-accent);
}

.hk-stat__icon--success {
    background: var(--hk-color-success-soft);
    color: var(--hk-color-success);
}

.hk-stat__icon--warning {
    background: var(--hk-color-warning-soft);
    color: var(--hk-color-warning);
}

.hk-stat__icon--info {
    background: var(--hk-color-info-soft);
    color: var(--hk-color-info);
}

.hk-stat__icon--danger {
    background: var(--hk-color-danger-soft);
    color: var(--hk-color-danger);
}

.hk-stat__icon--neutral {
    background: var(--hk-bg-subtle);
    color: var(--hk-text-secondary);
}

/* card-body .small giữ nguyên cho Playwright (test tìm `.card-body .small`) */
.hk-stat .card-body {
    padding: 0;
    background: transparent;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.hk-stat .card-body .small {
    font-size: var(--hk-font-size-xs);
    color: var(--hk-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-weight: 600;
}

.hk-stat__value {
    font-size: var(--hk-font-size-3xl);
    font-weight: 700;
    color: var(--hk-text-primary);
    letter-spacing: -0.02em;
    line-height: 1.05;
}

/* --------------------------------------------------------------------------
   14. Sidebar (admin)
   -------------------------------------------------------------------------- */
.hk-sidebar {
    background: var(--hk-bg-surface);
    border-radius: var(--hk-radius-lg);
    box-shadow: var(--hk-shadow-card);
    padding: 8px;
    margin-bottom: 16px;
}

.hk-sidebar__item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 12px;
    border-radius: var(--hk-radius-md);
    color: var(--hk-text-secondary);
    font-size: var(--hk-font-size-sm);
    font-weight: 500;
    transition: background-color var(--hk-duration-fast) var(--hk-ease-out),
        color var(--hk-duration-fast) var(--hk-ease-out);
}

.hk-sidebar__item .material-symbols-rounded {
    font-size: 18px;
    color: var(--hk-icon-default);
}

.hk-sidebar__item:hover {
    background: var(--hk-bg-hover);
    color: var(--hk-text-primary);
}

.hk-sidebar__item:hover .material-symbols-rounded {
    color: var(--hk-text-primary);
}

.hk-sidebar__item.is-active {
    background: var(--hk-bg-active);
    color: var(--hk-text-primary);
    box-shadow: inset 3px 0 0 0 var(--hk-color-accent);
}

.hk-sidebar__item.is-active .material-symbols-rounded {
    color: var(--hk-color-accent);
}

/* --------------------------------------------------------------------------
   15. Definition list (chi tiết lịch hẹn)
   -------------------------------------------------------------------------- */
.hk-dl {
    display: grid;
    grid-template-columns: 140px 1fr;
    gap: 10px 16px;
    margin: 0;
}

.hk-dl dt {
    font-size: var(--hk-font-size-xs);
    color: var(--hk-text-muted);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    padding-top: 2px;
}

.hk-dl dd {
    margin: 0;
    color: var(--hk-text-primary);
    font-size: var(--hk-font-size-sm);
}

@media (max-width: 640px) {
    .hk-dl {
        grid-template-columns: 1fr;
        gap: 4px 0;
    }

    .hk-dl dd {
        margin-bottom: 8px;
    }
}

/* --------------------------------------------------------------------------
   16. Service card
   -------------------------------------------------------------------------- */
.hk-service__title {
    font-size: var(--hk-font-size-md);
    font-weight: 600;
    color: var(--hk-text-primary);
    line-height: 1.35;
}

.hk-service__desc {
    font-size: var(--hk-font-size-sm);
    color: var(--hk-text-secondary);
    line-height: 1.55;
    margin: 4px 0 0;
}

.hk-service__meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: auto;
    padding-top: 12px;
    border-top: 1px dashed var(--hk-border-light);
}

.hk-service__price {
    color: var(--hk-color-accent);
    font-weight: 600;
    font-size: var(--hk-font-size-md);
}

.hk-service__actions {
    display: flex;
    gap: 8px;
    margin-top: 12px;
}

/* Staff card */
.hk-staff__name {
    font-size: var(--hk-font-size-md);
    font-weight: 600;
    color: var(--hk-text-primary);
}

.hk-staff__role {
    font-size: var(--hk-font-size-xs);
    color: var(--hk-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    font-weight: 600;
}

.hk-staff__bio {
    font-size: var(--hk-font-size-sm);
    color: var(--hk-text-secondary);
    line-height: 1.55;
    margin-top: 4px;
}

.hk-staff__hours {
    margin-top: 8px;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: var(--hk-font-size-xs);
    color: var(--hk-text-secondary);
}

.hk-staff__hours .material-symbols-rounded {
    font-size: 14px;
    color: var(--hk-icon-default);
}

/* --------------------------------------------------------------------------
   17. Grid helpers (12-col fluid using CSS grid; Bootstrap rows still work)
   -------------------------------------------------------------------------- */
.hk-grid {
    display: grid;
    gap: 16px;
}

.hk-grid--services {
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
}

.hk-grid--staffs {
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
}

.hk-split {
    display: grid;
    grid-template-columns: 240px 1fr;
    gap: 24px;
    align-items: start;
}

@media (max-width: 900px) {
    .hk-split {
        grid-template-columns: 1fr;
    }
}

.hk-split--narrow {
    grid-template-columns: 220px 1fr;
}

/* --------------------------------------------------------------------------
   18. Footer
   -------------------------------------------------------------------------- */
.hk-footer {
    border-top: 1px solid var(--hk-border-light);
    background: var(--hk-bg-surface);
    padding: 20px 0;
    color: var(--hk-text-muted);
    font-size: var(--hk-font-size-xs);
    margin-top: 64px;
}

.hk-footer__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    flex-wrap: wrap;
}

/* --------------------------------------------------------------------------
   19. Auth shell (login / register)
   -------------------------------------------------------------------------- */
.hk-auth {
    display: grid;
    place-items: center;
    min-height: calc(100vh - 56px);
    padding: 32px 16px;
}

.hk-auth__card {
    width: 100%;
    max-width: 440px;
    background: var(--hk-bg-surface);
    border-radius: var(--hk-radius-xl);
    box-shadow: var(--hk-shadow-md);
    padding: 36px;
}

.hk-auth__title {
    font-size: var(--hk-font-size-3xl);
    font-weight: 700;
    color: var(--hk-text-primary);
    letter-spacing: -0.02em;
    margin-bottom: 4px;
}

.hk-auth__sub {
    font-size: var(--hk-font-size-sm);
    color: var(--hk-text-secondary);
    margin-bottom: 24px;
}

.hk-auth__divider {
    margin: 20px 0 16px;
    text-align: center;
    color: var(--hk-text-muted);
    font-size: var(--hk-font-size-xs);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    position: relative;
}

.hk-auth__divider::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--hk-border-light);
    z-index: 0;
}

.hk-auth__divider span {
    background: var(--hk-bg-surface);
    padding: 0 12px;
    position: relative;
    z-index: 1;
}

.hk-auth__footer {
    text-align: center;
    margin-top: 18px;
    color: var(--hk-text-secondary);
    font-size: var(--hk-font-size-sm);
}

/* --------------------------------------------------------------------------
   20. Pagination tweaks (Bootstrap pagination)
   -------------------------------------------------------------------------- */
.pagination {
    gap: 4px;
}

.page-item .page-link {
    border-radius: var(--hk-radius-md);
    border: 1px solid var(--hk-border-light);
    background: var(--hk-bg-surface);
    color: var(--hk-text-secondary);
    font-size: var(--hk-font-size-sm);
    padding: 6px 10px;
    box-shadow: none;
}

.page-item .page-link:hover {
    background: var(--hk-bg-hover);
    color: var(--hk-text-primary);
    border-color: var(--hk-border-default);
}

.page-item.active .page-link {
    background: var(--hk-color-primary);
    border-color: var(--hk-color-primary);
    color: #ffffff;
}

[data-theme='dark'] .page-item.active .page-link {
    color: #111827;
}

.page-item.disabled .page-link {
    background: var(--hk-bg-subtle);
    color: var(--hk-text-hint);
    border-color: var(--hk-border-light);
}

/* --------------------------------------------------------------------------
   21. Misc utilities
   -------------------------------------------------------------------------- */
.hk-text-muted {
    color: var(--hk-text-muted);
}

.hk-text-secondary {
    color: var(--hk-text-secondary);
}

.hk-text-accent {
    color: var(--hk-color-accent);
}

.hk-divider {
    border: 0;
    border-top: 1px solid var(--hk-border-light);
    margin: 16px 0;
}

.hk-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 16px;
    flex-wrap: wrap;
}

.hk-empty {
    background: var(--hk-bg-subtle);
    border-radius: var(--hk-radius-lg);
    padding: 32px 24px;
    text-align: center;
    color: var(--hk-text-muted);
    font-size: var(--hk-font-size-sm);
    border: 1px dashed var(--hk-border-default);
}

.hk-empty .material-symbols-rounded {
    color: var(--hk-icon-muted);
    font-size: 32px;
    display: block;
    margin: 0 auto 8px;
}

/* --------------------------------------------------------------------------
   22. Bootstrap dropdown override
   -------------------------------------------------------------------------- */
.dropdown-menu {
    background: var(--hk-bg-surface-raised);
    color: var(--hk-text-primary);
    border: 1px solid var(--hk-border-default);
    border-radius: var(--hk-radius-lg);
    box-shadow: var(--hk-shadow-md);
    padding: 4px;
}

.dropdown-item {
    color: var(--hk-text-primary);
    border-radius: var(--hk-radius-sm);
    padding: 8px 10px;
    font-size: var(--hk-font-size-sm);
}

.dropdown-item:hover,
.dropdown-item:focus {
    background: var(--hk-bg-hover);
    color: var(--hk-text-primary);
}

.dropdown-item.text-danger {
    color: var(--hk-color-danger) !important;
}

.dropdown-item.text-danger:hover {
    background: var(--hk-color-danger-soft);
}

/* --------------------------------------------------------------------------
   23. Responsive helpers
   -------------------------------------------------------------------------- */
@media (max-width: 768px) {
    .hk-page-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }

    .hk-hero {
        padding: 32px 24px;
    }

    .hk-auth__card {
        padding: 28px 24px;
    }
}

/* --------------------------------------------------------------------------
   24. Print
   -------------------------------------------------------------------------- */
@media print {
    .hk-navbar,
    .hk-footer,
    .hk-theme-toggle {
        display: none !important;
    }
}