/* ============================================================
   BiliTool.Vn Premium Academic UI Layer v1.3.1
   Intent: clinical-grade, modern, refined, accessible.
   ============================================================ */

:root {
  --premium-ink: #07111f;
  --premium-ink-soft: #334155;
  --premium-muted: #64748b;
  --premium-line: rgba(15, 23, 42, 0.10);
  --premium-blue: #0f5f8f;
  --premium-blue-deep: #073b5f;
  --premium-teal: #0f766e;
  --premium-green: #17693a;
  --premium-gold: #b7791f;
  --premium-red: #b42318;
  --premium-bg: #eef6fb;
  --premium-card: rgba(255, 255, 255, 0.86);
  --premium-card-strong: rgba(255, 255, 255, 0.96);
  --premium-shadow-sm: 0 10px 28px rgba(8, 45, 77, 0.10);
  --premium-shadow-md: 0 22px 60px rgba(8, 45, 77, 0.16);
  --premium-shadow-lg: 0 32px 90px rgba(8, 45, 77, 0.22);
  --premium-radius-sm: 14px;
  --premium-radius-md: 22px;
  --premium-radius-lg: 32px;
  --premium-ease: cubic-bezier(.2, .8, .2, 1);
}

html {
  scroll-behavior: smooth;
}

body {
  color: var(--premium-ink);
  background:
    radial-gradient(circle at 8% -8%, rgba(47, 128, 237, .20), transparent 30%),
    radial-gradient(circle at 92% 0%, rgba(15, 118, 110, .18), transparent 32%),
    linear-gradient(135deg, #f8fcff 0%, #eef6fb 42%, #f7fbff 100%);
  background-attachment: fixed;
  letter-spacing: -0.006em;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: -1;
  background-image:
    linear-gradient(rgba(15, 95, 143, .035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(15, 95, 143, .035) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: linear-gradient(to bottom, rgba(0,0,0,.9), rgba(0,0,0,.12));
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: -1;
  opacity: .12;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160' viewBox='0 0 160 160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)' opacity='.35'/%3E%3C/svg%3E");
}

::selection {
  background: rgba(15, 95, 143, .18);
  color: var(--premium-ink);
}

:focus-visible {
  outline: 3px solid rgba(15, 95, 143, .38) !important;
  outline-offset: 3px !important;
  border-radius: 12px;
}

.bilitool-layout {
  min-height: 100dvh;
}

.sidebar {
  background:
    linear-gradient(180deg, rgba(4, 18, 35, .96) 0%, rgba(7, 46, 73, .96) 48%, rgba(5, 73, 82, .95) 100%) !important;
  border-right: 1px solid rgba(255,255,255,.12);
  box-shadow: 20px 0 70px rgba(7, 17, 31, .28);
  backdrop-filter: blur(22px);
}

.sidebar::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(circle at 22% 12%, rgba(90, 200, 250, .24), transparent 24%),
    linear-gradient(90deg, rgba(255,255,255,.08), transparent 38%);
}

.sidebar-header,
.sidebar-nav,
.nav-item-vn {
  position: relative;
  z-index: 1;
}

.sidebar-logo {
  gap: 12px;
}

.sidebar-logo i {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border-radius: 16px;
  color: #fff !important;
  background:
    linear-gradient(145deg, rgba(76, 201, 240, .95), rgba(15, 95, 143, .95)),
    radial-gradient(circle at 30% 20%, rgba(255,255,255,.8), transparent 32%);
  box-shadow: 0 16px 34px rgba(76, 201, 240, .25), inset 0 1px 0 rgba(255,255,255,.42);
}

.logo-name {
  font-weight: 900;
  letter-spacing: -0.035em;
}

.logo-tagline {
  color: rgba(226, 246, 255, .78) !important;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.nav-link-vn {
  margin: 4px 12px;
  border-radius: 16px !important;
  border: 1px solid transparent;
  transition: transform .22s var(--premium-ease), background .22s var(--premium-ease), border-color .22s var(--premium-ease), box-shadow .22s var(--premium-ease);
}

.nav-link-vn:hover {
  transform: translateX(3px);
  background: rgba(255,255,255,.10) !important;
  border-color: rgba(255,255,255,.14);
}

.nav-link-vn.active {
  background: linear-gradient(135deg, rgba(255,255,255,.18), rgba(255,255,255,.08)) !important;
  border-color: rgba(125, 211, 252, .28);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.16), 0 12px 30px rgba(0,0,0,.12);
}

.main-content,
.content-wrapper,
.page-content {
  background: transparent !important;
}

.main-content {
  position: relative;
}

.page-header,
.calculator-header,
.card-form-header {
  position: relative;
}

.card-form,
.ket-qua-card,
.info-card,
.guide-card,
.history-card,
.admin-card,
.xh-card,
.integration-card,
.content-card,
.faq-card,
.contact-card,
.disclaimer-card,
.intro-card {
  background: var(--premium-card) !important;
  border: 1px solid rgba(255,255,255,.74) !important;
  box-shadow: var(--premium-shadow-md) !important;
  backdrop-filter: blur(20px) saturate(1.18);
  -webkit-backdrop-filter: blur(20px) saturate(1.18);
}

.card-form,
.ket-qua-card {
  border-radius: var(--premium-radius-lg) !important;
  overflow: hidden;
}

.card-form {
  position: relative;
  isolation: isolate;
}

.card-form::before,
.ket-qua-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,.92), transparent);
  z-index: 2;
}

.card-form::after {
  content: "";
  position: absolute;
  top: -80px;
  right: -90px;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(15, 95, 143, .12), transparent 65%);
  z-index: -1;
}

.card-form-header {
  padding: 22px 26px !important;
  background:
    linear-gradient(135deg, rgba(255,255,255,.90), rgba(236, 248, 255, .74)) !important;
  border-bottom: 1px solid rgba(15, 23, 42, .08) !important;
}

.card-form-header h1 {
  font-size: clamp(1.15rem, 1.5vw, 1.55rem) !important;
  font-weight: 900 !important;
  color: var(--premium-ink) !important;
  letter-spacing: -0.035em;
}

.form-section {
  padding: 22px 26px !important;
  border-bottom: 1px solid rgba(15, 23, 42, .075) !important;
}

.section-label {
  font-size: .94rem !important;
  color: var(--premium-ink) !important;
  letter-spacing: -0.015em;
}

.section-badge {
  background: linear-gradient(145deg, var(--premium-blue), var(--premium-teal)) !important;
  box-shadow: 0 10px 22px rgba(15, 95, 143, .22);
}

.input-mode-toggle {
  padding: 5px !important;
  background: rgba(15, 23, 42, .055) !important;
  border: 1px solid rgba(15,23,42,.06);
  border-radius: 18px !important;
}

.toggle-btn {
  border-radius: 14px !important;
  min-height: 40px;
  color: var(--premium-ink-soft) !important;
}

.toggle-btn.active {
  color: var(--premium-blue-deep) !important;
  background: linear-gradient(180deg, #fff, #f7fbff) !important;
  box-shadow: 0 10px 22px rgba(15, 95, 143, .12), inset 0 1px 0 #fff !important;
}

.form-control {
  min-height: 44px;
  border: 1px solid rgba(15,23,42,.12) !important;
  border-radius: 15px !important;
  background: rgba(255,255,255,.88) !important;
  box-shadow: inset 0 1px 0 rgba(255,255,255,.92), 0 1px 2px rgba(15,23,42,.03);
}

.form-control:hover {
  border-color: rgba(15, 95, 143, .34) !important;
}

.form-control:focus {
  border-color: var(--premium-blue) !important;
  box-shadow: 0 0 0 4px rgba(15, 95, 143, .13), 0 12px 24px rgba(15,95,143,.08) !important;
}

.unit-badge,
.optional-badge,
.thoi-gian-tinh {
  border-radius: 999px !important;
  background: rgba(15,95,143,.08) !important;
  border: 1px solid rgba(15,95,143,.12) !important;
  color: var(--premium-blue-deep) !important;
}

.checkbox-vn,
.checkbox-container-vn {
  display: flex !important;
  align-items: flex-start !important;
  gap: 10px !important;
  min-height: 44px;
  padding: 10px 12px !important;
  background: rgba(255,255,255,.62) !important;
  border: 1px solid rgba(15,23,42,.10) !important;
  border-radius: 16px !important;
  transition: transform .2s var(--premium-ease), border-color .2s var(--premium-ease), box-shadow .2s var(--premium-ease), background .2s var(--premium-ease) !important;
}

.checkbox-vn:hover,
.checkbox-container-vn:hover {
  transform: translateY(-1px);
  background: rgba(255,255,255,.90) !important;
  border-color: rgba(15,95,143,.28) !important;
  box-shadow: 0 12px 24px rgba(15,95,143,.08);
}

.checkbox-box,
.checkmark-vn {
  width: 20px !important;
  height: 20px !important;
  flex: 0 0 20px !important;
  display: inline-flex !important;
  align-items: center !important;
  justify-content: center !important;
  margin-top: 1px !important;
  border: 2px solid rgba(100,116,139,.35) !important;
  border-radius: 7px !important;
}

.checkbox-container-vn input[type="checkbox"] {
  position: absolute !important;
  opacity: 0 !important;
  pointer-events: none !important;
}

.checkbox-container-vn input[type="checkbox"]:checked + .checkmark-vn {
  border-color: var(--premium-blue) !important;
  background: linear-gradient(145deg, var(--premium-blue), var(--premium-teal)) !important;
  box-shadow: 0 8px 18px rgba(15,95,143,.18);
}

.checkbox-container-vn input[type="checkbox"]:checked + .checkmark-vn::after {
  content: "\2714";
  color: #fff;
  font-size: .72rem;
  font-weight: 900;
}

.checkbox-container-vn input[type="checkbox"]:focus-visible + .checkmark-vn,
.checkbox-vn input[type="checkbox"]:focus-visible + .checkbox-box {
  outline: 3px solid rgba(15,95,143,.32);
  outline-offset: 2px;
}

.checkbox-grid {
  display: grid !important;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px !important;
  margin: 10px 0 14px !important;
}

.checkbox-grid .checkbox-label,
.nguyen-co-grid .checkbox-label {
  color: var(--premium-ink-soft) !important;
  font-size: .84rem !important;
  font-weight: 650;
  line-height: 1.35;
}

.checkbox-grid .text-danger {
  color: #b42318 !important;
}

.form-section h5 {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 16px 0 8px !important;
  color: var(--premium-ink) !important;
  font-size: .92rem !important;
  font-weight: 900 !important;
}

.etcoc-row {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid rgba(15,23,42,.075);
}

.btn-calculate,
.btn-primary-vn,
.btn-them-bn,
.btn-action-primary {
  border: 0 !important;
  color: #fff !important;
  background:
    linear-gradient(135deg, #0f5f8f 0%, #0f766e 52%, #17693a 100%) !important;
  box-shadow: 0 18px 42px rgba(15, 95, 143, .26), inset 0 1px 0 rgba(255,255,255,.28) !important;
  transition: transform .22s var(--premium-ease), box-shadow .22s var(--premium-ease), filter .22s var(--premium-ease) !important;
}

.btn-calculate {
  min-height: 54px;
  border-radius: 18px !important;
  font-size: 1rem !important;
  font-weight: 900 !important;
  letter-spacing: .01em;
}

.btn-calculate:hover,
.btn-primary-vn:hover,
.btn-them-bn:hover,
.btn-action-primary:hover {
  transform: translateY(-2px);
  filter: saturate(1.08) brightness(1.02);
  box-shadow: 0 24px 52px rgba(15, 95, 143, .34), inset 0 1px 0 rgba(255,255,255,.34) !important;
}

.btn-calculate:active,
.btn-primary-vn:active {
  transform: translateY(0) scale(.99);
}

.ket-qua-card {
  position: relative;
  animation: premium-rise .48s var(--premium-ease) both;
}

.ket-qua-header {
  padding: 18px 22px !important;
  background: rgba(255,255,255,.64) !important;
}

.ket-qua-body {
  padding: 24px !important;
}

.muc-do-badge-huge {
  border-radius: 24px !important;
  box-shadow: 0 22px 54px rgba(7, 17, 31, .20), inset 0 1px 0 rgba(255,255,255,.22) !important;
  position: relative;
  overflow: hidden;
}

.muc-do-badge-huge::after {
  content: "";
  position: absolute;
  inset: -80% -20%;
  background: linear-gradient(120deg, transparent 35%, rgba(255,255,255,.30), transparent 62%);
  transform: translateX(-60%);
  animation: premium-sheen 5.2s ease-in-out infinite;
}

.thong-so-grid,
.khoang-cach-grid,
.nice-threshold-grid {
  gap: 14px !important;
}

.thong-so-item,
.khoang-cach-item,
.nice-th-item {
  background: rgba(255,255,255,.72) !important;
  border: 1px solid rgba(15,23,42,.08) !important;
  border-radius: 18px !important;
  box-shadow: 0 10px 22px rgba(15,23,42,.045);
}

.ts-label,
.nice-th-label {
  color: var(--premium-muted) !important;
  font-weight: 800 !important;
  letter-spacing: .055em !important;
}

.ts-value,
.nice-th-value {
  color: var(--premium-ink) !important;
}

.nice-alert,
.khuyen-nghi-box,
.can-thiep-box,
.reference-box {
  border-radius: 20px !important;
  border: 1px solid rgba(15,23,42,.08) !important;
  box-shadow: 0 12px 26px rgba(15,23,42,.055);
}

.bili-chart-container,
.nomogram-wrapper {
  background: rgba(255,255,255,.80) !important;
  border: 1px solid rgba(15,23,42,.08) !important;
  border-radius: 24px !important;
  box-shadow: var(--premium-shadow-sm);
}

.ket-qua-card {
  border-left-width: 0 !important;
}

.ket-qua-header {
  justify-content: space-between !important;
  min-height: 58px;
  background:
    linear-gradient(135deg, rgba(255,255,255,.92), rgba(235,248,252,.76)) !important;
}

.ket-qua-title {
  color: var(--premium-teal);
  font-size: .72rem;
  font-weight: 900;
  letter-spacing: .12em;
  text-transform: uppercase;
}

.thoi-gian-tinh {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 7px 10px;
  border-radius: 999px;
  color: var(--premium-ink-soft) !important;
  background: rgba(15,95,143,.07);
  border: 1px solid rgba(15,95,143,.10);
  font-weight: 800;
}

.thoi-gian-tinh::before {
  content: "\f017";
  font-family: "Font Awesome 5 Free";
  font-weight: 900;
  color: var(--premium-blue);
}

.muc-do-badge-huge {
  min-height: 92px;
  display: grid !important;
  gap: 8px;
  padding: 20px 22px !important;
  border-radius: 28px !important;
  text-align: center;
  letter-spacing: -.025em;
}

.muc-do-badge-huge > div:first-child {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  font-size: clamp(1.35rem, 2.3vw, 1.78rem);
  font-weight: 950;
}

.muc-do-badge-huge > div:first-child i {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  color: #17693a;
  background: rgba(255,255,255,.92);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.8), 0 10px 22px rgba(0,0,0,.16);
}

.muc-do-badge-huge > div:nth-child(2) {
  margin: 0 auto !important;
  width: fit-content;
  background: rgba(255,255,255,.20) !important;
  border: 1px solid rgba(255,255,255,.24);
  backdrop-filter: blur(8px);
}

.thong-so-row {
  grid-template-columns: repeat(4, minmax(0, 1fr)) !important;
  gap: 12px !important;
  margin: 16px 0 18px !important;
}

.thong-so-item {
  min-height: 74px;
  padding: 14px 15px !important;
  background:
    linear-gradient(180deg, rgba(255,255,255,.94), rgba(248,251,253,.86)) !important;
}

.thong-so-item .ts-label {
  margin-bottom: 5px;
  font-size: .70rem !important;
  text-transform: uppercase;
}

.thong-so-item .ts-value {
  font-size: .98rem !important;
  line-height: 1.35;
}

.khoang-cach-grid {
  margin-top: -2px;
}

.khoang-cach-item {
  position: relative;
  padding: 16px 18px !important;
  background:
    linear-gradient(145deg, rgba(255,255,255,.96), rgba(241,250,247,.84)) !important;
  overflow: hidden;
}

.khoang-cach-item::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 4px;
  background: linear-gradient(180deg, var(--premium-blue), var(--premium-teal));
}

.khoang-cach-item span {
  color: var(--premium-muted) !important;
  font-size: .74rem !important;
  font-weight: 850;
  letter-spacing: .04em;
  text-transform: uppercase;
}

.khoang-cach-item strong {
  display: block;
  margin-top: 4px;
  font-size: 1rem !important;
  letter-spacing: -.02em;
}

.khuyen-nghi-box {
  position: relative;
  padding: 18px 20px !important;
  background:
    linear-gradient(145deg, rgba(255,255,255,.98), rgba(241,250,247,.86)) !important;
  border-left: 5px solid currentColor !important;
}

.khuyen-nghi-title {
  color: var(--premium-ink) !important;
  font-size: .98rem !important;
  letter-spacing: -.015em;
}

.khuyen-nghi-title i {
  width: 32px;
  height: 32px;
  display: inline-grid;
  place-items: center;
  border-radius: 12px;
  color: #fff;
  background: linear-gradient(145deg, var(--premium-blue), var(--premium-teal));
  box-shadow: 0 10px 18px rgba(15,95,143,.18);
}

.khuyen-nghi-chinh {
  color: var(--premium-ink-soft) !important;
  font-size: .94rem !important;
  line-height: 1.65 !important;
}

.theo-doi-tiep,
.tai-kham-badge,
.nice-repeat-box {
  border: 1px solid rgba(15,95,143,.10) !important;
  background: rgba(15,95,143,.055) !important;
  border-radius: 16px !important;
}

.nice-thresholds-box,
.nice-references {
  background: rgba(255,255,255,.78) !important;
  border: 1px solid rgba(15,23,42,.08) !important;
  border-radius: 20px !important;
  box-shadow: 0 12px 26px rgba(15,23,42,.045);
}

.nice-thresholds-title,
.nice-ref-title {
  color: var(--premium-ink) !important;
  font-weight: 900 !important;
}

.nice-thresholds-grid {
  gap: 14px !important;
}

.nice-th-item {
  border: 1px solid rgba(15,23,42,.07) !important;
  border-radius: 16px !important;
  box-shadow: none !important;
}

.action-buttons {
  display: grid !important;
  grid-template-columns: 1fr 1fr !important;
  gap: 12px !important;
}

.action-buttons .btn-primary-vn {
  grid-column: 1 / -1 !important;
}

.btn-copy,
.btn-print {
  min-height: 46px;
  border-radius: 16px !important;
  font-weight: 850 !important;
}

.huong-dan-ban-dau {
  position: relative;
  overflow: hidden;
  background:
    linear-gradient(145deg, rgba(255,255,255,.96), rgba(241,249,252,.88)) !important;
  border: 1px solid rgba(255,255,255,.76);
  box-shadow: var(--premium-shadow-md) !important;
}

.huong-dan-ban-dau::before {
  content: "";
  position: absolute;
  top: -120px;
  right: -100px;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(15,95,143,.14), transparent 68%);
}

.huong-dan-ban-dau > * {
  position: relative;
  z-index: 1;
}

.hd-icon {
  width: 58px;
  height: 58px;
  display: grid;
  place-items: center;
  border-radius: 22px;
  color: #fff !important;
  background: linear-gradient(145deg, var(--premium-blue), var(--premium-teal));
  box-shadow: 0 18px 36px rgba(15,95,143,.22);
  font-size: 1.9rem !important;
}

.huong-dan-ban-dau h2 {
  color: var(--premium-blue) !important;
  font-size: clamp(1.28rem, 2vw, 1.6rem) !important;
  font-weight: 950 !important;
  letter-spacing: -.045em;
}

.huong-dan-ban-dau h3 {
  color: var(--premium-ink-soft) !important;
  font-size: .98rem !important;
  font-weight: 750 !important;
  line-height: 1.45;
}

.huong-dan-ban-dau p {
  margin-top: 16px;
  padding: 14px 16px !important;
  color: var(--premium-ink-soft) !important;
  background: rgba(15,95,143,.055);
  border: 0 !important;
  border-left: 4px solid rgba(15,95,143,.22) !important;
  border-radius: 0 16px 16px 0;
}

.update-list,
.nguyen-tac-chieu-den {
  padding: 16px 18px;
  border: 1px solid rgba(15,23,42,.075);
  border-radius: 20px;
  background: rgba(255,255,255,.70);
  box-shadow: 0 12px 24px rgba(15,23,42,.04);
}

.update-list h4,
.nguyen-tac-chieu-den h4 {
  color: var(--premium-ink) !important;
  font-size: .92rem !important;
  line-height: 1.35;
}

.update-list ul,
.nguyen-tac-chieu-den ul {
  margin: 0;
  padding: 0;
}

.update-list li,
.nguyen-tac-chieu-den li {
  color: var(--premium-ink-soft) !important;
  line-height: 1.55;
  padding: 6px 0 !important;
}

.ref-link a {
  padding: 10px 12px;
  border-radius: 999px;
  background: rgba(15,95,143,.07);
  border: 1px solid rgba(15,95,143,.11);
  text-decoration: none !important;
}

.lang-dropdown-btn,
.sidebar-toggle,
.btn-reset,
.modal-close,
.btn-icon {
  transition: transform .18s var(--premium-ease), background .18s var(--premium-ease), box-shadow .18s var(--premium-ease) !important;
}

.lang-dropdown-btn:hover,
.sidebar-toggle:hover,
.btn-reset:hover,
.modal-close:hover,
.btn-icon:hover {
  transform: translateY(-1px);
}

.modal-backdrop-vn {
  backdrop-filter: blur(12px) saturate(1.1);
}

.modal-content-vn {
  border-radius: 28px !important;
  border: 1px solid rgba(255,255,255,.72) !important;
  box-shadow: var(--premium-shadow-lg) !important;
}

@keyframes premium-rise {
  from { opacity: 0; transform: translateY(16px) scale(.985); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

@keyframes premium-sheen {
  0%, 48% { transform: translateX(-62%) rotate(4deg); }
  70%, 100% { transform: translateX(62%) rotate(4deg); }
}

@media (hover: hover) {
  .card-form,
  .ket-qua-card,
  .guide-card,
  .info-card,
  .history-card,
  .integration-card,
  .faq-card,
  .contact-card,
  .disclaimer-card,
  .intro-card {
    transition: transform .28s var(--premium-ease), box-shadow .28s var(--premium-ease), border-color .28s var(--premium-ease);
  }

  .card-form:hover,
  .ket-qua-card:hover,
  .guide-card:hover,
  .info-card:hover,
  .history-card:hover,
  .integration-card:hover,
  .faq-card:hover,
  .contact-card:hover,
  .disclaimer-card:hover,
  .intro-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--premium-shadow-lg) !important;
    border-color: rgba(255,255,255,.92) !important;
  }
}

@media (max-width: 1024px) {
  .card-form,
  .ket-qua-card {
    border-radius: 26px !important;
  }

  .form-section,
  .ket-qua-body,
  .card-form-header {
    padding-left: 20px !important;
    padding-right: 20px !important;
  }
}

@media (max-width: 640px) {
  body {
    background-attachment: scroll;
  }

  .sidebar {
    box-shadow: 16px 0 54px rgba(7,17,31,.36);
  }

  .card-form,
  .ket-qua-card {
    border-radius: 22px !important;
    box-shadow: 0 16px 42px rgba(8,45,77,.12) !important;
  }

  .form-section,
  .ket-qua-body,
  .card-form-header {
    padding: 18px 16px !important;
  }

  .datetime-grid,
  .bilirubin-row,
  .thong-so-grid,
  .khoang-cach-grid,
  .nice-threshold-grid {
    grid-template-columns: 1fr !important;
  }

  .bilirubin-row {
    display: grid !important;
  }

  .w-auto {
    width: 100% !important;
  }

  .checkbox-grid {
    grid-template-columns: 1fr !important;
  }

  .btn-calculate {
    min-height: 58px;
    border-radius: 20px !important;
  }

  .muc-do-badge-huge {
    font-size: 1.25rem !important;
    padding: 18px 14px !important;
  }

  .nav-link-vn,
  .lang-dropdown-btn,
  .mobile-login-btn,
  .sidebar-toggle,
  .btn-reset,
  .btn-icon,
  .footer-links a {
    min-height: 44px;
  }

  .footer-links a {
    display: inline-flex !important;
    align-items: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.001ms !important;
  }
}