/* ============================================================
   UI-UX Pro Max — enhancement layer cho client frontend
   Spec: UI-UX-PRO-MAX.md (nguon skill:
   https://github.com/nextlevelbuilder/ui-ux-pro-max-skill)
   Nguyen tac:
   - Chi dung bien var(--vs-*) san co -> tuong thich ca 6 theme
     (modern/classic/bold/minimal/impeccable/grooming).
   - Prefix uupm- de khong dung do voi .vs-* va theme override.
   - Hairline-first, khong glass/gradient-text/neon/bounce.
   - Breakpoint chuan du an: 1200 / 991 / 767 / 575.
   ============================================================ */

:root {
    /* Motion tokens (khong phai mau sac, an toan cho moi theme) */
    --uupm-ease-out: cubic-bezier(0.16, 1, 0.3, 1);
    --uupm-dur-feedback: 180ms; /* button press: 150-200ms (motion.csv Subtle) */
    --uupm-dur-card: 250ms;     /* card hover: 200-300ms (motion.csv Standard) */
    --uupm-focus-ring: 0 0 0 3px var(--vs-border-strong, rgba(13, 148, 136, .35));
    scroll-padding-top: 88px; /* sticky header khong che focus (ux-guidelines) */
}

/* ===== 1. Prose: measure + line-height tieng Viet ===== */
.uupm-prose {
    max-width: 72ch;
    line-height: 1.75;
    letter-spacing: .002em;
}
.uupm-prose h1,
.uupm-prose h2 {
    text-wrap: balance;
    line-height: 1.25;
}

/* ===== 2. Button feedback: 1 authored micro-moment ===== */
.uupm-btn {
    font-weight: 700;
    min-height: 44px;
    transition: color var(--uupm-dur-feedback) var(--uupm-ease-out),
        background-color var(--uupm-dur-feedback) var(--uupm-ease-out),
        border-color var(--uupm-dur-feedback) var(--uupm-ease-out),
        transform var(--uupm-dur-feedback) var(--uupm-ease-out),
        box-shadow var(--uupm-dur-card) var(--uupm-ease-out);
}
.uupm-btn:hover {
    transform: translateY(-1px);
}
.uupm-btn:active {
    transform: translateY(0);
}
.uupm-btn:disabled,
.uupm-btn[aria-disabled="true"] {
    cursor: not-allowed;
    opacity: .55;
    transform: none;
}

/* Focus thay the outline: ring dung border-strong cua theme */
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
[role="button"]:focus-visible,
.uupm-card:focus-within {
    outline: none;
    box-shadow: var(--uupm-focus-ring);
    outline-offset: 2px;
}

/* ===== 3. Product/service card: hover lift (E-commerce rule) ===== */
.uupm-card {
    background: var(--vs-surface);
    border: 1px solid var(--vs-border);
    border-radius: var(--vs-radius, 12px);
    transition: transform var(--uupm-dur-card) var(--uupm-ease-out),
        box-shadow var(--uupm-dur-card) var(--uupm-ease-out),
        border-color var(--uupm-dur-card) var(--uupm-ease-out);
}
.uupm-card:hover,
.uupm-card:focus-within {
    transform: translateY(-4px);
    box-shadow: var(--vs-shadow-lg);
    border-color: var(--vs-border-strong, var(--vs-border));
}
.uupm-card__media img {
    width: 100%;
    aspect-ratio: 4 / 3;
    object-fit: cover;
    border-radius: var(--vs-radius-sm, 8px) var(--vs-radius-sm, 8px) 0 0;
}
.uupm-card__body {
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

/* Gia + CTA: 1 primary, toi da 2 secondary (cognitive load) */
.uupm-price {
    font-weight: 800;
    color: var(--vs-primary);
}
.uupm-price--old {
    font-weight: 500;
    color: var(--vs-gray-600);
    text-decoration: line-through;
}

/* ===== 4. Trust / social proof (Veterinary must-have) ===== */
.uupm-testimonial {
    background: var(--vs-surface);
    border: 1px solid var(--vs-border);
    border-radius: var(--vs-radius, 12px);
    padding: 24px;
}
.uupm-testimonial blockquote {
    margin: 0 0 16px;
    font-style: italic;
    color: var(--vs-gray-900);
    line-height: 1.75;
    max-width: 65ch;
}
.uupm-stars {
    color: var(--vs-accent);
    letter-spacing: 2px;
}
/* Badge khan cap: cam + chu theo theme, khong dung gray tren nen mau */
.uupm-badge-emergency {
    display: inline-flex;
    align-items: center;
    min-height: 44px;
    padding: 8px 16px;
    border-radius: 999px;
    background: var(--vs-accent);
    color: var(--vs-surface);
    font-weight: 700;
    white-space: nowrap;
    transition: background-color var(--uupm-dur-feedback) var(--uupm-ease-out),
        transform var(--uupm-dur-feedback) var(--uupm-ease-out);
}
.uupm-badge-emergency:hover {
    transform: translateY(-1px);
}

/* Chip/badge: giu 1 dong, tranparent disclosure day du */
.uupm-chip {
    display: inline-flex;
    align-items: center;
    max-width: 100%;
    min-height: 32px;
    padding: 4px 12px;
    border: 1px solid var(--vs-border);
    border-radius: 999px;
    background: var(--vs-surface-alt);
    color: var(--vs-gray-900);
    font-size: 13px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* ===== 5. Section rhythm: tight groups, generous separation ===== */
.uupm-section {
    padding: 48px 0;
    scroll-margin-top: 88px;
}
.uupm-section__head {
    margin-bottom: 32px;
    max-width: 72ch;
}
.uupm-section__head > * + * {
    margin-top: 8px;
}
.uupm-grid-features {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

/* ===== 6. Skeleton loading (static khi reduced-motion) ===== */
.uupm-skeleton {
    border-radius: var(--vs-radius-sm, 8px);
    background: linear-gradient(90deg,
        var(--vs-surface-alt) 25%,
        var(--vs-bg-soft, var(--vs-surface-alt)) 50%,
        var(--vs-surface-alt) 75%);
    background-size: 200% 100%;
    animation: uupm-shimmer 1400ms linear infinite;
}
@keyframes uupm-shimmer {
    from { background-position: 200% 0; }
    to { background-position: -200% 0; }
}

/* ===== 7. Carousel controls: pause/play luon thay duoc ===== */
.uupm-carousel__controls {
    display: flex;
    gap: 8px;
    align-items: center;
}
.uupm-carousel__controls button {
    min-width: 44px;
    min-height: 44px;
    border: 1px solid var(--vs-border);
    border-radius: 50%;
    background: var(--vs-surface);
    color: var(--vs-gray-900);
    cursor: pointer;
    transition: border-color var(--uupm-dur-feedback) var(--uupm-ease-out),
        transform var(--uupm-dur-feedback) var(--uupm-ease-out);
}
.uupm-carousel__controls button:hover {
    border-color: var(--vs-border-strong, var(--vs-primary));
    transform: translateY(-1px);
}

/* ===== 8. Browser surfaces theo palette (Impeccable craft floor) ===== */
::selection {
    background: var(--vs-primary);
    color: var(--vs-surface);
}

/* ===== 9. Responsive (breakpoint du an) ===== */
@media (max-width: 1200px) {
    .uupm-grid-features {
        grid-template-columns: repeat(3, 1fr);
        gap: 20px;
    }
}
@media (max-width: 991px) {
    .uupm-grid-features {
        grid-template-columns: repeat(2, 1fr);
    }
    .uupm-section {
        padding: 40px 0;
    }
}
@media (max-width: 767px) {
    .uupm-grid-features {
        grid-template-columns: 1fr;
    }
    .uupm-section {
        padding: 32px 0;
    }
    /* Thumb zone: CTA chinh de voi trong nua duoi man hinh */
    .uupm-sticky-cta {
        position: sticky;
        bottom: calc(env(safe-area-inset-bottom, 0px) + 16px);
        z-index: 50;
    }
}
@media (max-width: 575px) {
    .uupm-section {
        padding: 24px 0;
    }
    .uupm-section__head {
        margin-bottom: 24px;
    }
    .uupm-testimonial {
        padding: 16px;
    }
}

/* ===== 10. Reduced motion: render trang thai cuoi tinh ===== */
@media (prefers-reduced-motion: reduce) {
    .uupm-btn,
    .uupm-card,
    .uupm-badge-emergency,
    .uupm-carousel__controls button {
        transition: none;
        transform: none;
    }
    .uupm-card:hover,
    .uupm-card:focus-within,
    .uupm-btn:hover {
        transform: none;
    }
    .uupm-skeleton {
        animation: none;
        background: var(--vs-surface-alt);
    }
}