/* =====================================================================
   KỸ NĂNG VIỆT — TRANG LIÊN HỆ (Editorial UK/EU)
   Prefix: knv-lh-*  |  Tokens: assets/css/design-system.css
   Layout: Bootstrap 5 + flex (no CSS grid, no min-width media)
   ===================================================================== */

/* ===== Shared eyebrow & section-head ===== */
.knv-lh-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-sans);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  color: var(--secondary);
  margin-bottom: 16px;
  line-height: 1;
}
.knv-lh-eyebrow::before {
  content: "";
  width: 24px;
  height: 1px;
  background-color: var(--secondary);
}

.knv-lh-section-head {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  margin-bottom: 16px;
}
.knv-lh-section-head__line {
  display: inline-block;
  width: 48px;
  height: 1px;
  background-color: var(--secondary);
}
.knv-lh-section-head__label {
  font-family: var(--font-sans);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 3.5px;
  text-transform: uppercase;
  color: var(--secondary);
}

/* =====================================================================
   1. HERO
   ===================================================================== */
.knv-lh-hero {
  position: relative;
  padding: 130px 0 90px;
  background: linear-gradient(
    135deg,
    var(--navy) 0%,
    var(--primary-dark) 60%,
    var(--primary) 100%
  );
  color: var(--white-color);
  overflow: hidden;
  isolation: isolate;
}
.knv-lh-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(
      circle at 20% 10%,
      rgba(196, 163, 90, 0.18),
      transparent 45%
    ),
    radial-gradient(
      circle at 90% 90%,
      rgba(196, 163, 90, 0.12),
      transparent 50%
    );
  pointer-events: none;
  z-index: -1;
}
.knv-lh-hero__ornament {
  position: absolute;
  width: 220px;
  height: 220px;
  border: 1px solid rgba(196, 163, 90, 0.18);
  transform: rotate(45deg);
  border-radius: var(--radius-sm);
  pointer-events: none;
  z-index: -1;
}
.knv-lh-hero__ornament--tl {
  top: -110px;
  left: -110px;
}
.knv-lh-hero__ornament--br {
  bottom: -110px;
  right: -110px;
}

.knv-lh-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-sans);
  font-size: 13px;
  color: rgba(255, 255, 255, 0.72);
  margin-bottom: 48px;
}
.knv-lh-breadcrumb a {
  color: rgba(255, 255, 255, 0.72);
  text-decoration: none;
  transition: color var(--transition-base);
}
.knv-lh-breadcrumb a:hover {
  color: var(--secondary);
}
.knv-lh-breadcrumb__sep {
  color: rgba(255, 255, 255, 0.45);
}
.knv-lh-breadcrumb__current {
  color: var(--white-color);
  font-weight: 500;
}

.knv-lh-hero__inner {
  max-width: 760px;
  margin: 0 auto;
}
.knv-lh-hero__label {
  font-family: var(--font-sans);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 3.5px;
  text-transform: uppercase;
  color: var(--secondary);
  margin-bottom: 20px;
}
.knv-lh-hero__title {
  font-family: var(--font-serif);
  font-size: clamp(34px, 4.4vw, 54px);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.5px;
  color: var(--white-color);
  margin: 0 0 24px;
}
.knv-lh-hero__rule {
  display: block;
  width: 64px;
  height: 2px;
  margin: 0 auto 28px;
  background-color: var(--secondary);
}
.knv-lh-hero__sub {
  font-family: var(--font-sans);
  font-size: 18px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.78);
  max-width: 640px;
  margin: 0 auto;
}

/* =====================================================================
   2. QUICK INFO CARDS
   ===================================================================== */
.knv-lh-quickinfo {
  background-color: var(--bg);
  padding: 80px 0 40px;
}
.knv-lh-info-card {
  position: relative;
  height: 100%;
  padding: 32px 24px;
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  transition:
    transform var(--transition-base),
    box-shadow var(--transition-base),
    border-color var(--transition-base);
  overflow: hidden;
}

.knv-lh-info-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
}
.knv-lh-info-card__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  background-color: var(--secondary-light);
  color: var(--secondary);
  margin-bottom: 20px;
  transition:
    background-color var(--transition-base),
    color var(--transition-base);
}
.knv-lh-info-card__icon iconify-icon {
  font-size: 22px;
}
.knv-lh-info-card:hover .knv-lh-info-card__icon {
  background-color: var(--secondary);
  color: var(--white-color);
}
.knv-lh-info-card__label {
  font-family: var(--font-sans);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 1.8px;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 10px;
}
.knv-lh-info-card__value {
  font-family: var(--normal-font);
  font-size: 0.9rem;
  font-weight: 700;
  line-height: 1.45;
  color: var(--text-primary);
}

/* =====================================================================
   3. MAIN: FORM 8 / DETAIL 4
   ===================================================================== */
.knv-lh-main {
  background-color: var(--bg);
  padding: 25px 0 70px;
}

/* ----- Form wrapper ----- */
.knv-lh-form-wrap {
  height: 100%;
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  padding: 40px;
}
.knv-lh-form-head {
  margin-bottom: 32px;
}
.knv-lh-form-head__title {
  font-family: var(--font-serif);
  font-size: clamp(22px, 2.4vw, 28px);
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.3px;
  color: var(--text-primary);
  margin: 0 0 12px;
}
.knv-lh-form-head__rule {
  display: block;
  width: 48px;
  height: 2px;
  background-color: var(--secondary);
}

/* ----- Form fields ----- */
.knv-lh-label {
  display: block;
  font-family: var(--font-sans);
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 8px;
}
.knv-lh-required {
  color: var(--danger);
  margin-left: 2px;
}

.knv-lh-input {
  width: 100%;
  height: 52px;
  padding: 14px 16px;
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.4;
  color: var(--text-primary);
  background-color: var(--surface);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-md);
  outline: none;
  transition:
    border-color var(--transition-base),
    box-shadow var(--transition-base),
    background-color var(--transition-base);
}
.knv-lh-input::placeholder {
  color: var(--text-muted);
  opacity: 1;
}
.knv-lh-input:hover {
  border-color: var(--text-muted);
}
.knv-lh-input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(0, 94, 184, 0.1);
  background-color: var(--surface);
}

/* Select with custom chevron */
.knv-lh-select-wrap {
  position: relative;
}
.knv-lh-select {
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
  padding-right: 44px;
  cursor: pointer;
}
.knv-lh-select__chev {
  position: absolute;
  right: 18px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 12px;
  color: var(--secondary);
  pointer-events: none;
}
.knv-lh-select option {
  color: var(--text-primary);
}
.knv-lh-select option[disabled] {
  color: var(--text-muted);
}

/* Textarea */
.knv-lh-textarea {
  height: auto;
  min-height: 140px;
  padding: 16px;
  line-height: 1.65;
  resize: vertical;
}

/* ----- Form footer (submit + privacy) ----- */
.knv-lh-form-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
  margin-top: 28px;
}
.knv-lh-submit {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 16px 36px;
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--white-color);
  background-color: var(--secondary);
  border: none;
  border-radius: var(--radius-pill);
  box-shadow: var(--shadow-gold);
  cursor: pointer;
  transition:
    background-color var(--transition-base),
    box-shadow var(--transition-base),
    transform var(--transition-fast);
}
.knv-lh-submit iconify-icon {
  font-size: 14px;
}
.knv-lh-submit:hover {
  background-color: var(--secondary-hover);
  box-shadow: var(--shadow-gold-hover);
  transform: translateY(-2px);
}
.knv-lh-submit:active {
  transform: translateY(0);
}
.knv-lh-submit:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

@keyframes knvLhSpin {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}
.knv-lh-spin {
  animation: knvLhSpin 0.8s linear infinite;
}

.knv-lh-input.is-invalid {
  border-color: var(--danger);
  box-shadow: 0 0 0 4px rgba(239, 68, 68, 0.1);
}

.knv-lh-privacy {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-sans);
  font-size: 12.5px;
  font-style: italic;
  color: var(--text-muted);
  margin: 0;
  max-width: 340px;
  line-height: 1.5;
}
.knv-lh-privacy iconify-icon {
  font-size: 12px;
  color: var(--secondary);
  flex-shrink: 0;
}

/* ----- Info detail sidebar ----- */
.knv-lh-detail {
  position: sticky;
  top: 24px;
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  padding: 36px 32px;
  height: 100%;
}
.knv-lh-detail__title {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--text-primary);
  margin: 0 0 12px;
}
.knv-lh-detail__desc {
  font-family: var(--font-sans);
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--text-secondary);
  margin: 0 0 24px;
}
.knv-lh-detail__section {
  margin-top: 28px;
}
.knv-lh-detail__heading {
  font-family: var(--font-sans);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 14px;
  padding-top: 18px;
  border-top: 1px solid var(--border);
}

/* Hotline CTA inside detail */
.knv-lh-hotline {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 18px;
  background-color: var(--navy);
  border-radius: var(--radius-md);
  text-decoration: none;
  transition:
    background-color var(--transition-base),
    transform var(--transition-fast);
}
.knv-lh-hotline:hover {
  background-color: var(--primary-dark);
  transform: translateY(-2px);
}
.knv-lh-hotline__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background-color: var(--secondary);
  color: var(--navy);
  flex-shrink: 0;
}
.knv-lh-hotline__icon iconify-icon {
  font-size: 16px;
}
.knv-lh-hotline__body {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}
.knv-lh-hotline__label {
  font-family: var(--font-sans);
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 2px;
  color: var(--secondary);
  margin-bottom: 4px;
}
.knv-lh-hotline__number {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 700;
  color: var(--white-color);
  letter-spacing: 0.5px;
}

/* Socials */
.knv-lh-socials {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.knv-lh-social {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background-color: var(--surface);
  color: var(--text-secondary);
  text-decoration: none;
  transition:
    color var(--transition-base),
    background-color var(--transition-base),
    border-color var(--transition-base),
    transform var(--transition-fast);
}
.knv-lh-social iconify-icon {
  font-size: 16px;
}
.knv-lh-social:hover {
  color: var(--white-color);
  background-color: var(--secondary);
  border-color: var(--secondary);
  transform: translateY(-2px);
}

/* Hours */
.knv-lh-hours {
  margin: 0;
}
.knv-lh-hours__row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
  font-family: var(--font-sans);
  font-size: 14px;
}
.knv-lh-hours__row:last-child {
  border-bottom: none;
}
.knv-lh-hours dt {
  font-weight: 500;
  color: var(--text-primary);
}
.knv-lh-hours dd {
  margin: 0;
  color: var(--text-secondary);
  font-weight: 600;
}

/* =====================================================================
   4. MAP
   ===================================================================== */
.knv-lh-map {
  background-color: var(--surface);
  padding: 80px 0;
}
.knv-lh-map__title {
  font-family: var(--font-serif);
  font-size: clamp(24px, 2.6vw, 32px);
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-primary);
  margin: 16px 0 12px;
}
.knv-lh-map__sub {
  font-family: var(--font-sans);
  font-size: 15px;
  color: var(--text-secondary);
  margin: 0 auto;
  max-width: 560px;
  line-height: 1.6;
}
.knv-lh-map__frame {
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: 0 24px 60px -20px rgba(1, 42, 74, 0.18);
  line-height: 0;
}
.knv-lh-map__frame iframe {
  display: block;
  width: 100%;
  height: 480px;
  border: 0;
}

/* =====================================================================
   5. CTA HOTLINE
   ===================================================================== */
.knv-lh-cta {
  position: relative;
  padding: 80px 0;
  background: #003d7a;
  color: var(--white-color);
  overflow: hidden;
  isolation: isolate;
}

.knv-lh-cta__ornament {
  position: absolute;
  width: 180px;
  height: 180px;
  border: 1px solid rgba(196, 163, 90, 0.16);
  transform: rotate(45deg);
  border-radius: var(--radius-sm);
  pointer-events: none;
  z-index: -1;
}
.knv-lh-cta__ornament--tl {
  top: -90px;
  left: -90px;
}
.knv-lh-cta__ornament--br {
  bottom: -90px;
  right: -90px;
}

.knv-lh-cta__inner {
  max-width: 720px;
  margin: 0 auto;
}
.knv-lh-cta__eyebrow {
  font-family: var(--font-sans);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 3.5px;
  text-transform: uppercase;
  color: var(--secondary);
  margin-bottom: 16px;
}
.knv-lh-cta__title {
  font-family: var(--font-serif);
  font-size: clamp(28px, 3.4vw, 40px);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.3px;
  color: var(--white-color);
  margin: 0 0 18px;
}
.knv-lh-cta__sub {
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.78);
  max-width: 540px;
  margin: 0 auto 36px;
}

.knv-lh-cta__actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
}
.knv-lh-cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 16px 32px;
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.5px;
  text-decoration: none;
  border-radius: var(--radius-pill);
  transition:
    background-color var(--transition-base),
    border-color var(--transition-base),
    box-shadow var(--transition-base),
    transform var(--transition-fast);
}
.knv-lh-cta-btn iconify-icon {
  font-size: 16px;
}

.knv-lh-cta-btn--gold {
  background-color: var(--secondary);
  color: var(--white-color);
  border: 1.5px solid var(--secondary);
  box-shadow: var(--shadow-gold);
}
.knv-lh-cta-btn--gold:hover {
  background-color: var(--secondary-hover);
  border-color: var(--secondary-hover);
  box-shadow: var(--shadow-gold-hover);
  transform: translateY(-2px);
  -webkit-transform: translateY(-2px);
  -moz-transform: translateY(-2px);
  -ms-transform: translateY(-2px);
  -o-transform: translateY(-2px);
  color: var(--white-color);
}
.knv-lh-cta-btn--outline:hover {
  color: var(--white-color);
}
.knv-lh-cta-btn--outline {
  background-color: transparent;
  color: var(--white-color);
  border: 1.5px solid rgba(255, 255, 255, 0.5);
}
.knv-lh-cta-btn--outline:hover {
  border-color: var(--white-color);
  background-color: rgba(255, 255, 255, 0.08);
  transform: translateY(-2px);
}


/* =====================================================================
   RESPONSIVE (max-width only — per project rule)
   ===================================================================== */

/* Tablet (≤991.98px) */
@media (max-width: 991.98px) {
  .knv-lh-hero {
    padding: 120px 0 70px;
  }
  .knv-lh-hero__ornament {
    width: 160px;
    height: 160px;
  }
  .knv-lh-hero__ornament--tl {
    top: -80px;
    left: -80px;
  }
  .knv-lh-hero__ornament--br {
    bottom: -80px;
    right: -80px;
  }
  .knv-lh-breadcrumb {
    margin-bottom: 36px;
  }

  .knv-lh-quickinfo {
    padding: 64px 0 24px;
  }
  .knv-lh-main {
    padding: 24px 0 64px;
  }

  .knv-lh-detail {
    position: static;
    top: auto;
  }

  .knv-lh-map {
    padding: 64px 0;
  }
  .knv-lh-map__frame iframe {
    height: 400px;
  }

  .knv-lh-cta {
    padding: 64px 0;
  }
}

/* Mobile (≤768px) */
@media (max-width: 768px) {
  .knv-lh-hero {
    padding: 110px 0 56px;
  }
  .knv-lh-hero__title {
    letter-spacing: -0.3px;
  }
  .knv-lh-hero__sub {
    font-size: 16px;
  }
  .knv-lh-breadcrumb {
    font-size: 12.5px;
    margin-bottom: 28px;
  }

  .knv-lh-quickinfo {
    padding: 48px 0 16px;
  }
  .knv-lh-info-card {
    padding: 24px 20px;
  }
  .knv-lh-info-card__icon {
    width: 48px;
    height: 48px;
    margin-bottom: 16px;
  }
  .knv-lh-info-card__icon iconify-icon {
    font-size: 20px;
  }

  .knv-lh-main {
    padding: 16px 0 56px;
  }
  .knv-lh-form-wrap {
    padding: 28px 22px;
  }
  .knv-lh-form-head {
    margin-bottom: 24px;
  }
  .knv-lh-form-foot {
    flex-direction: column;
    align-items: stretch;
    gap: 16px;
  }
  .knv-lh-submit {
    justify-content: center;
  }
  .knv-lh-privacy {
    max-width: 100%;
  }

  .knv-lh-detail {
    padding: 28px 22px;
  }

  .knv-lh-map {
    padding: 56px 0;
  }
  .knv-lh-map__frame iframe {
    height: 360px;
  }
  .knv-lh-section-head {
    gap: 14px;
  }
  .knv-lh-section-head__line {
    width: 36px;
  }
  .knv-lh-section-head__label {
    font-size: 11.5px;
    letter-spacing: 3px;
  }

  .knv-lh-cta {
    padding: 56px 0;
  }
}

/* Mobile small (≤576px) */
@media (max-width: 576px) {
  .knv-lh-hero {
    padding: 110px 0 48px;
  }
  .knv-lh-hero__title {
    font-size: clamp(26px, 7vw, 32px);
  }
  .knv-lh-hero__sub {
    font-size: 15.5px;
    line-height: 1.65;
  }
  .knv-lh-hero__rule {
    width: 52px;
    margin-bottom: 22px;
  }

  .knv-lh-info-card__value {
    font-size: 16px;
  }

  .knv-lh-form-wrap {
    padding: 24px 18px;
  }
  .knv-lh-form-head__title {
    font-size: 22px;
  }
  .knv-lh-input {
    height: 48px;
    font-size: 14.5px;
    padding: 12px 14px;
  }
  .knv-lh-textarea {
    min-height: 130px;
  }
  .knv-lh-submit {
    width: 100%;
    justify-content: center;
    padding: 14px 24px;
    font-size: 13px;
    letter-spacing: 1.6px;
  }

  .knv-lh-detail {
    padding: 24px 18px;
  }
  .knv-lh-hotline__number {
    font-size: 18px;
  }
  .knv-lh-social {
    width: 40px;
    height: 40px;
  }

  .knv-lh-map__frame iframe {
    height: 300px;
  }

  .knv-lh-cta__actions {
    flex-direction: column;
  }
  .knv-lh-cta-btn {
    width: 100%;
    justify-content: center;
  }
}

/* Very small (≤350px) */
@media (max-width: 350px) {
  .knv-lh-hero {
    padding: 48px 0 40px;
  }
  .knv-lh-hero__title {
    font-size: 24px;
  }
  .knv-lh-info-card {
    padding: 20px 16px;
  }
  .knv-lh-form-wrap,
  .knv-lh-detail {
    padding: 20px 14px;
  }
  .knv-lh-hours__row {
    flex-direction: column;
    align-items: flex-start;
    gap: 2px;
  }
  .knv-lh-map__frame iframe {
    height: 260px;
  }
}