/* =====================================================================
   VINAMEDICAL — Base: reset, kiểu chữ nền, tiện ích bố cục
   Phụ thuộc: tokens.css (nạp trước)
   ===================================================================== */

/* ---------- Reset gọn ---------- */
*, *::before, *::after { box-sizing: border-box; }

* { margin: 0; }

html {
  /* overflow-x: clip chặn tràn ngang mà KHÔNG tạo vùng cuộn mới, nên
     position: sticky của header và các khối dính vẫn hoạt động bình thường.
     (overflow-x: hidden sẽ phá sticky vì biến thẻ thành vùng cuộn.) */
  overflow-x: clip;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--vm-header-h) + var(--vm-space-6));
  -moz-tab-size: 4;
  tab-size: 4;
}

body {
  background: var(--vm-bg);
  color: var(--vm-text);
  font-family: var(--vm-font-body);
  font-size: var(--vm-text-base);
  line-height: var(--vm-leading-normal);
  font-weight: var(--vm-weight-normal);
  letter-spacing: var(--vm-tracking-snug);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  min-height: 100dvh;
  overflow-x: hidden;
  transition: background-color var(--vm-dur-base) var(--vm-ease-out),
              color var(--vm-dur-base) var(--vm-ease-out);
}

body.vm-no-scroll { overflow: hidden; }

img, svg, video, canvas, picture, iframe {
  display: block;
  max-width: 100%;
}
img, video { height: auto; }

input, button, textarea, select {
  font: inherit;
  color: inherit;
  letter-spacing: inherit;
}

button { background: none; border: 0; cursor: pointer; }

p, h1, h2, h3, h4, h5, h6 { overflow-wrap: break-word; }

ul[class], ol[class] { list-style: none; padding: 0; }

table { border-collapse: collapse; width: 100%; }

hr {
  border: 0;
  border-top: 1px solid var(--vm-border);
  margin-block: var(--vm-space-8);
}

::selection {
  background: color-mix(in srgb, var(--vm-primary-500) 26%, transparent);
  color: var(--vm-text);
}

/* Thanh cuộn mảnh, hợp tông */
* { scrollbar-width: thin; scrollbar-color: var(--vm-border-strong) transparent; }
*::-webkit-scrollbar { width: 10px; height: 10px; }
*::-webkit-scrollbar-track { background: transparent; }
*::-webkit-scrollbar-thumb {
  background: var(--vm-border-strong);
  border-radius: var(--vm-radius-pill);
  border: 3px solid var(--vm-bg);
}
*::-webkit-scrollbar-thumb:hover { background: var(--vm-neutral-400); }

/* ---------- Tiêu đề ---------- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--vm-font-display);
  font-weight: var(--vm-weight-bold);
  line-height: var(--vm-leading-tight);
  letter-spacing: var(--vm-tracking-tight);
  color: var(--vm-text);
  text-wrap: balance;
}
h1 { font-size: var(--vm-text-4xl); font-weight: var(--vm-weight-black); }
h2 { font-size: var(--vm-text-3xl); }
h3 { font-size: var(--vm-text-2xl); }
h4 { font-size: var(--vm-text-xl); }
h5 { font-size: var(--vm-text-lg); }
h6 { font-size: var(--vm-text-md); font-weight: var(--vm-weight-semi); }

p { text-wrap: pretty; }

a {
  color: var(--vm-link);
  text-decoration: none;
  transition: color var(--vm-dur-fast) var(--vm-ease-out);
}
a:hover { color: var(--vm-link-hover); }

strong, b { font-weight: var(--vm-weight-semi); }

small { font-size: var(--vm-text-sm); }

/* ---------- Tiêu điểm bàn phím ---------- */
:where(a, button, input, textarea, select, summary, [tabindex]):focus-visible {
  outline: 2px solid var(--vm-primary-500);
  outline-offset: 2px;
  border-radius: var(--vm-radius-xs);
}
:focus:not(:focus-visible) { outline: none; }

/* Bỏ qua tới nội dung chính */
.vm-skip {
  position: absolute;
  left: var(--vm-space-4);
  top: -100px;
  z-index: var(--vm-z-toast);
  padding: var(--vm-space-3) var(--vm-space-5);
  background: var(--vm-brand);
  color: var(--vm-text-on-brand);
  border-radius: var(--vm-radius-sm);
  font-weight: var(--vm-weight-semi);
  transition: top var(--vm-dur-base) var(--vm-ease-out);
}
.vm-skip:focus { top: var(--vm-space-4); color: var(--vm-text-on-brand); }

/* ---------- Bố cục ---------- */
.vm-container {
  width: 100%;
  max-width: var(--vm-container);
  margin-inline: auto;
  padding-inline: var(--vm-gutter);
}
.vm-container--narrow { max-width: var(--vm-container-narrow); }
.vm-container--wide { max-width: var(--vm-container-wide); }

.vm-section { padding-block: var(--vm-section-y); position: relative; }
.vm-section--sm { padding-block: var(--vm-section-y-sm); }
.vm-section--tight { padding-block: clamp(2rem, 3vw, 3rem); }
.vm-section--subtle { background: var(--vm-bg-subtle); }
.vm-section--muted { background: var(--vm-bg-muted); }
.vm-section--dark {
  background: var(--vm-grad-deep);
  color: var(--vm-text-on-deep);
}
.vm-section--dark h1, .vm-section--dark h2,
.vm-section--dark h3, .vm-section--dark h4 { color: #ffffff; }
.vm-section--dark .vm-section-head__desc { color: var(--vm-text-on-deep-soft); }

.vm-grid { display: grid; gap: var(--vm-space-6); }
.vm-grid--2 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 320px), 1fr)); }
.vm-grid--3 { grid-template-columns: repeat(auto-fill, minmax(min(100%, 300px), 1fr)); }
.vm-grid--4 { grid-template-columns: repeat(auto-fill, minmax(min(100%, 250px), 1fr)); }
.vm-grid--5 { grid-template-columns: repeat(auto-fill, minmax(min(100%, 200px), 1fr)); }

.vm-stack { display: flex; flex-direction: column; gap: var(--vm-space-4); }
.vm-row { display: flex; align-items: center; gap: var(--vm-space-3); flex-wrap: wrap; }
.vm-row--between { justify-content: space-between; }
.vm-row--center { justify-content: center; }
.vm-row--end { justify-content: flex-end; }

/* ---------- Đầu section dùng chung ---------- */
.vm-section-head {
  display: flex;
  flex-direction: column;
  gap: var(--vm-space-3);
  margin-bottom: clamp(2rem, 3.5vw, 3.25rem);
  max-width: 760px;
}
.vm-section-head--center { margin-inline: auto; text-align: center; align-items: center; }
.vm-section-head--split {
  max-width: none;
  flex-direction: row;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--vm-space-8);
  flex-wrap: wrap;
}
.vm-section-head--split .vm-section-head__body { max-width: 680px; }

.vm-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--vm-space-2);
  font-family: var(--vm-font-display);
  font-size: var(--vm-text-xs);
  font-weight: var(--vm-weight-bold);
  letter-spacing: var(--vm-tracking-caps);
  text-transform: uppercase;
  color: var(--vm-brand);
}
.vm-eyebrow::before {
  content: "";
  width: 26px;
  height: 2px;
  border-radius: 2px;
  background: var(--vm-grad-cta);
}
.vm-section-head--center .vm-eyebrow::after {
  content: "";
  width: 26px;
  height: 2px;
  border-radius: 2px;
  background: var(--vm-grad-cta);
}

.vm-section-head__title { font-size: var(--vm-text-3xl); }
.vm-section-head__desc {
  color: var(--vm-text-soft);
  font-size: var(--vm-text-md);
  line-height: var(--vm-leading-relaxed);
}

/* ---------- Tiện ích ---------- */
.vm-sr-only {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}
.vm-hide { display: none !important; }
.vm-text-center { text-align: center; }
.vm-text-brand { color: var(--vm-brand); }
.vm-text-cta { color: var(--vm-cta); }
.vm-text-soft { color: var(--vm-text-soft); }
.vm-text-muted { color: var(--vm-text-muted); }
.vm-lead {
  font-size: var(--vm-text-lg);
  line-height: var(--vm-leading-relaxed);
  color: var(--vm-text-soft);
}
.vm-mt-0 { margin-top: 0; }
.vm-mt-4 { margin-top: var(--vm-space-4); }
.vm-mt-6 { margin-top: var(--vm-space-6); }
.vm-mt-8 { margin-top: var(--vm-space-8); }
.vm-mt-12 { margin-top: var(--vm-space-12); }
.vm-mb-6 { margin-bottom: var(--vm-space-6); }
.vm-mb-8 { margin-bottom: var(--vm-space-8); }
.vm-full-bleed { width: 100%; }

/* Cắt chữ theo số dòng */
.vm-clamp-1, .vm-clamp-2, .vm-clamp-3, .vm-clamp-4 {
  display: -webkit-box;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.vm-clamp-1 { -webkit-line-clamp: 1; line-clamp: 1; }
.vm-clamp-2 { -webkit-line-clamp: 2; line-clamp: 2; }
.vm-clamp-3 { -webkit-line-clamp: 3; line-clamp: 3; }
.vm-clamp-4 { -webkit-line-clamp: 4; line-clamp: 4; }

/* Khung ảnh giữ tỉ lệ + zoom mềm khi hover */
.vm-media {
  position: relative;
  overflow: hidden;
  background: var(--vm-bg-muted);
  border-radius: var(--vm-radius-lg);
}
.vm-media > img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--vm-dur-slower) var(--vm-ease-out);
}
.vm-media--4x3 { aspect-ratio: 4 / 3; }
.vm-media--16x9 { aspect-ratio: 16 / 9; }
.vm-media--1x1 { aspect-ratio: 1 / 1; }
.vm-media--3x2 { aspect-ratio: 3 / 2; }
.vm-media--contain { background: var(--vm-neutral-0); }
.vm-media--contain > img { object-fit: contain; padding: var(--vm-space-5); }
:is(a, .vm-card, .vm-product-card):hover .vm-media > img { transform: scale(1.06); }

/* ---------- Nền trang trí ---------- */
.vm-bg-grid {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, color-mix(in srgb, var(--vm-primary-500) 9%, transparent) 1px, transparent 1px),
    linear-gradient(to bottom, color-mix(in srgb, var(--vm-primary-500) 9%, transparent) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 30%, transparent 78%);
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 30%, transparent 78%);
}
.vm-bg-dots {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: radial-gradient(color-mix(in srgb, var(--vm-primary-500) 22%, transparent) 1px, transparent 1px);
  background-size: 22px 22px;
  mask-image: radial-gradient(ellipse 70% 70% at 50% 50%, #000 20%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 70% 70% at 50% 50%, #000 20%, transparent 75%);
}
.vm-bg-blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  opacity: 0.4;
  pointer-events: none;
  z-index: 0;
}
.vm-bg-blob--brand { background: var(--vm-primary-400); }
.vm-bg-blob--cta { background: var(--vm-accent-400); }

/* ---------- Hoạt cảnh khi cuộn tới ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(22px);
  transition:
    opacity var(--vm-dur-slow) var(--vm-ease-out),
    transform var(--vm-dur-slow) var(--vm-ease-out);
  transition-delay: var(--vm-reveal-delay, 0ms);
  will-change: opacity, transform;
}
[data-reveal="left"]  { transform: translateX(-28px); }
[data-reveal="right"] { transform: translateX(28px); }
/* Màn hình hẹp: độ dịch phải nhỏ hơn lề trang (16px), nếu không phần tử
   sẽ thò ra ngoài mép trong lúc chờ hiện. */
@media (max-width: 600px) {
  [data-reveal="left"]  { transform: translateX(-12px); }
  [data-reveal="right"] { transform: translateX(12px); }
}
[data-reveal="zoom"]  { transform: scale(0.94); }
[data-reveal="fade"]  { transform: none; }
[data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

@keyframes vm-fade-up {
  from { opacity: 0; transform: translateY(18px); }
  to { opacity: 1; transform: none; }
}
@keyframes vm-fade-in { from { opacity: 0; } to { opacity: 1; } }
@keyframes vm-pulse-ring {
  0%   { box-shadow: 0 0 0 0 color-mix(in srgb, var(--vm-accent-500) 55%, transparent); }
  70%  { box-shadow: 0 0 0 18px transparent; }
  100% { box-shadow: 0 0 0 0 transparent; }
}
@keyframes vm-float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}
@keyframes vm-marquee {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}
@keyframes vm-shimmer {
  from { background-position: -140% 0; }
  to { background-position: 240% 0; }
}
@keyframes vm-spin { to { transform: rotate(360deg); } }

/* ---------- Tôn trọng thiết lập giảm chuyển động ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
  [data-reveal] { opacity: 1; transform: none; }
}

/* ---------- In ấn ---------- */
@media print {
  .vm-header, .vm-footer, .vm-to-top, .vm-quick-contact, .vm-drawer { display: none !important; }
  body { background: #fff; color: #000; }
  .vm-section { padding-block: 1rem; }
}

/* =====================================================================
   HIỆU ỨNG NỀN NÂNG CAO
   Đúc kết từ khảo sát nguồn mở (open-props, meshgrad, css-doodle…),
   viết lại hoàn toàn bằng biến --vm-*, không phụ thuộc thư viện ngoài.
   ===================================================================== */

/* --- Mesh gradient: nhiều radial-gradient chồng lên nhau, ~0 KB --- */
.vm-mesh {
  position: relative;
  isolation: isolate;
  background-color: var(--vm-primary-950);
  background-image:
    radial-gradient(at 12% 18%, color-mix(in srgb, var(--vm-primary-500) 55%, transparent) 0px, transparent 55%),
    radial-gradient(at 82% 12%, color-mix(in srgb, var(--vm-primary-300) 38%, transparent) 0px, transparent 50%),
    radial-gradient(at 68% 78%, color-mix(in srgb, var(--vm-accent-600) 42%, transparent) 0px, transparent 55%),
    radial-gradient(at 22% 88%, color-mix(in srgb, var(--vm-primary-400) 34%, transparent) 0px, transparent 50%),
    radial-gradient(at 50% 45%, color-mix(in srgb, var(--vm-primary-600) 30%, transparent) 0px, transparent 60%);
  color: #fff;
}

/* Phiên bản sáng, hợp với section nội dung */
.vm-mesh--light {
  background-color: var(--vm-bg-subtle);
  background-image:
    radial-gradient(at 10% 10%, color-mix(in srgb, var(--vm-primary-100) 90%, transparent) 0px, transparent 50%),
    radial-gradient(at 90% 20%, color-mix(in srgb, var(--vm-accent-100) 70%, transparent) 0px, transparent 45%),
    radial-gradient(at 60% 95%, color-mix(in srgb, var(--vm-primary-100) 80%, transparent) 0px, transparent 50%);
  color: var(--vm-text);
}

/* --- Gradient xoay chậm: @property cho phép nội suy kiểu <angle> --- */
@property --vm-angle {
  syntax: "<angle>";
  initial-value: 0deg;
  inherits: false;
}

.vm-aurora {
  --vm-angle: 0deg;
  background: conic-gradient(from var(--vm-angle) at 50% 50%,
    var(--vm-primary-800), var(--vm-accent-600), var(--vm-primary-500),
    var(--vm-primary-900), var(--vm-primary-800));
  animation: vm-rotate-angle 22s linear infinite;
}
@keyframes vm-rotate-angle { to { --vm-angle: 360deg; } }

/* Dự phòng khi trình duyệt chưa hỗ trợ @property */
@supports not (background: conic-gradient(from 0deg, red, blue)) {
  .vm-aurora {
    background: linear-gradient(120deg, var(--vm-primary-800), var(--vm-accent-600),
                var(--vm-primary-500), var(--vm-primary-900));
    background-size: 300% 300%;
    animation: vm-slide-gradient 18s ease-in-out infinite;
  }
  @keyframes vm-slide-gradient {
    0%, 100% { background-position: 0% 50%; }
    50%      { background-position: 100% 50%; }
  }
}

/* --- Hạt nhiễu mịn: khử hiện tượng "chuối màu" trên nền gradient lớn --- */
.vm-noise { position: relative; isolation: isolate; }
.vm-noise::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  opacity: 0.05;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* --- Chữ tô gradient --- */
.vm-gradient-text {
  background: var(--vm-grad-brand);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.vm-gradient-text--cta { background: var(--vm-grad-cta); -webkit-background-clip: text; background-clip: text; }

/* --- Dải cuộn ngang có điểm dừng: thay carousel ở màn hình nhỏ, 0 KB JS --- */
.vm-scroller {
  display: flex;
  gap: var(--vm-space-5);
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scroll-padding-inline: var(--vm-gutter);
  padding-bottom: var(--vm-space-3);
  scrollbar-width: none;
  -ms-overflow-style: none;
}
.vm-scroller::-webkit-scrollbar { display: none; }
.vm-scroller > * {
  flex: 0 0 min(88vw, 320px);
  scroll-snap-align: start;
}

/* --- Đường kẻ trang trí mềm giữa hai section --- */
.vm-divider {
  height: 1px;
  border: 0;
  background: linear-gradient(90deg, transparent,
              color-mix(in srgb, var(--vm-brand) 32%, transparent), transparent);
  margin: 0;
}