/**
 * Khả Văn — Design system trang chủ (typography, icon, section)
 */
:root {
  --kv-green: #0a6b3d;
  --kv-green-dark: #004526;
  --kv-green-soft: #eef8f2;
  --kv-yellow: #ffc617;
  --kv-yellow-soft: #fff8e1;
  --kv-text: #0e422b;
  --kv-muted: #5c7268;
  --kv-border: #dce8e2;
  --kv-radius: 14px;
  --kv-shadow: 0 8px 28px rgba(6, 73, 45, 0.08);
  --kv-font: "Be Vietnam Pro", "Segoe UI", system-ui, sans-serif;
}

body.kv-home {
  font-family: var(--kv-font);
  color: var(--kv-text);
  background: #fff;
  font-size: 15px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

.bg-kv-green { background: var(--kv-green) !important; }
.bg-kv-green-dark { background: var(--kv-green-dark) !important; }
.bg-kv-yellow { background: var(--kv-yellow) !important; }
.text-kv-green { color: var(--kv-green) !important; }
.text-kv-yellow { color: var(--kv-yellow) !important; }

/* Section chung */
.kv-section {
  padding: 4rem 0;
}

.kv-section--soft {
  background: linear-gradient(180deg, var(--kv-green-soft) 0%, #fff 100%);
}

.kv-section__head {
  text-align: center;
  max-width: 40rem;
  margin: 0 auto 2.5rem;
}

.kv-kicker {
  display: inline-block;
  font-size: 0.6875rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--kv-green);
  background: var(--kv-yellow-soft);
  border: 1px solid rgba(245, 184, 0, 0.35);
  padding: 0.35rem 0.85rem;
  border-radius: 999px;
}

.kv-section__title {
  margin: 0.85rem 0 0;
  font-size: clamp(1.5rem, 3vw, 1.875rem);
  font-weight: 800;
  line-height: 1.25;
  color: var(--kv-green);
  letter-spacing: -0.02em;
}

.kv-section__desc {
  margin: 0.65rem 0 0;
  font-size: 0.9375rem;
  color: var(--kv-muted);
  font-weight: 500;
}

/* Hero */
.kv-hero {
  position: relative;
  min-height: 22rem;
  color: #fff;
  overflow: hidden;
}

@media (min-width: 1024px) {
  .kv-hero {
    min-height: 26rem;
  }
}

/* Sóng chuyển sang stats — giống mockup */
.kv-hero::after {
  content: "";
  position: absolute;
  left: -2%;
  right: -2%;
  bottom: -2px;
  height: 3.5rem;
  background: #fff;
  transform: rotate(-1.5deg);
  transform-origin: left bottom;
  z-index: 4;
  box-shadow: 0 -1px 0 rgba(238, 255, 245, 0.4);
}

.kv-hero__bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center 20%;
  background-repeat: no-repeat;
}

/* Không upload ảnh → nền xanh chuyển màu + ánh sáng */
.kv-hero--gradient .kv-hero__bg--shine {
  background: linear-gradient(
    125deg,
    #001a0e 0%,
    #005a32 22%,
    #0b8f4a 45%,
    #007a42 68%,
    #003d22 100%
  );
  background-size: 320% 320%;
  animation: kv-hero-gradient-shift 14s ease infinite;
}

.kv-hero--gradient .kv-hero__bg--shine::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 70% 55% at 15% 35%, rgba(120, 255, 180, 0.42), transparent 52%),
    radial-gradient(ellipse 45% 40% at 88% 18%, rgba(255, 210, 60, 0.28), transparent 48%),
    radial-gradient(ellipse 55% 45% at 72% 78%, rgba(0, 200, 110, 0.32), transparent 50%),
    radial-gradient(ellipse 35% 30% at 50% 50%, rgba(255, 255, 255, 0.06), transparent 60%);
  animation: kv-hero-glow-pulse 9s ease-in-out infinite alternate;
}

.kv-hero--gradient .kv-hero__bg--shine::after {
  content: "";
  position: absolute;
  inset: -40%;
  background: linear-gradient(
    108deg,
    transparent 38%,
    rgba(255, 255, 255, 0.04) 46%,
    rgba(255, 255, 255, 0.16) 50%,
    rgba(200, 255, 220, 0.12) 52%,
    rgba(255, 255, 255, 0.04) 56%,
    transparent 64%
  );
  animation: kv-hero-shimmer 7s ease-in-out infinite;
}

@keyframes kv-hero-gradient-shift {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

@keyframes kv-hero-glow-pulse {
  0% { opacity: 0.75; transform: scale(1); }
  100% { opacity: 1; transform: scale(1.03); }
}

@keyframes kv-hero-shimmer {
  0%, 100% { transform: translateX(-25%) rotate(0deg); opacity: 0.6; }
  50% { transform: translateX(25%) rotate(0deg); opacity: 1; }
}

.kv-hero__overlay {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(105deg, rgba(0, 69, 38, 0.94) 0%, rgba(0, 95, 52, 0.82) 42%, rgba(10, 107, 61, 0.65) 100%),
    radial-gradient(circle at 70% 20%, rgba(255, 198, 23, 0.12), transparent 45%);
}

/* Gradient mặc định: overlay nhẹ để lộ màu lung linh */
.kv-hero__overlay--gradient {
  background:
    linear-gradient(100deg, rgba(0, 45, 25, 0.35) 0%, rgba(0, 80, 45, 0.2) 50%, rgba(0, 50, 30, 0.4) 100%),
    radial-gradient(circle at 75% 15%, rgba(255, 198, 23, 0.15), transparent 40%);
  pointer-events: none;
}

.kv-hero__inner {
  position: relative;
  z-index: 2;
  padding: 5.5rem 0 4rem;
}

.kv-hero-kicker {
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--kv-yellow);
  margin: 0 0 0.75rem;
}

.kv-hero__title {
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin: 0;
}

.kv-hero__title .text-kv-yellow {
  color: var(--kv-yellow) !important;
}

.kv-hero__lead {
  margin-top: 1.25rem;
  font-size: 0.9375rem;
  font-weight: 500;
  line-height: 1.65;
  color: rgba(255, 255, 255, 0.9);
  max-width: 32rem;
}

.kv-hero__actions {
  margin-top: 1.75rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.kv-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  font-weight: 700;
  padding: 0.75rem 1.35rem;
  border-radius: 999px;
  text-decoration: none;
  transition: transform 0.15s, box-shadow 0.15s, opacity 0.15s;
  border: none;
  cursor: pointer;
}

.kv-btn:hover {
  transform: translateY(-1px);
}

.kv-btn--primary {
  background: var(--kv-yellow);
  color: #06492d;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.15);
}

.kv-btn--ghost {
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.35);
}

.kv-hero-badges {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.65rem;
}

/* Badge sidebar cũ — chỉ khi nằm trong visual hero (layout legacy) */
@media (min-width: 1024px) {
  .kv-hero__visual .kv-hero-badges {
    grid-template-columns: 1fr;
    max-width: 11rem;
    margin-left: auto;
  }
}

.kv-hero-badge {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  background: #fff;
  color: var(--kv-text);
  border-radius: 999px;
  padding: 0.5rem 0.85rem;
  font-size: 0.6875rem;
  font-weight: 700;
  box-shadow: var(--kv-shadow);
}

.kv-hero-badge__icon {
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  background: var(--kv-green-soft);
  color: var(--kv-green);
  display: grid;
  place-items: center;
  font-size: 1rem;
  flex-shrink: 0;
}

.kv-hero-badge__strong {
  display: block;
  font-size: 0.8125rem;
  color: var(--kv-green);
}

.kv-hero-badge__sub {
  display: block;
  font-weight: 500;
  color: var(--kv-muted);
  font-size: 0.625rem;
}

/* Stats */
.kv-stats-wrap {
  position: relative;
  z-index: 20;
  margin-top: -1.75rem;
  padding-bottom: 0.5rem;
}

.kv-hero-band + .kv-stats-wrap {
  margin-top: 0;
}

.kv-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  background: #fff;
  border-radius: var(--kv-radius);
  box-shadow: 0 12px 40px rgba(6, 73, 45, 0.12);
  border: 1px solid var(--kv-border);
  overflow: hidden;
}

@media (min-width: 1024px) {
  .kv-stats {
    grid-template-columns: repeat(4, 1fr);
  }
}

.kv-stat {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  padding: 1.25rem 1rem;
  border-bottom: 1px solid var(--kv-border);
}

@media (min-width: 1024px) {
  .kv-stat {
    border-bottom: none;
    border-right: 1px solid var(--kv-border);
  }
  .kv-stat:last-child {
    border-right: none;
  }
}

.kv-stat__icon {
  width: 2.75rem;
  height: 2.75rem;
  border-radius: 12px;
  background: var(--kv-green-soft);
  color: var(--kv-green);
  display: grid;
  place-items: center;
  font-size: 1.25rem;
  flex-shrink: 0;
}

.kv-stat__value {
  display: block;
  font-size: 1.375rem;
  font-weight: 800;
  color: var(--kv-green);
  line-height: 1.2;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
  transition: transform 0.35s ease, opacity 0.35s ease;
}

.kv-stat__value.is-counting {
  opacity: 0.85;
  transform: translateY(2px);
}

.kv-stat__value.is-done {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .kv-stat__value.is-counting,
  .kv-stat__value.is-done {
    transition: none;
    transform: none;
  }
}

.kv-stat__label {
  margin: 0.15rem 0 0;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--kv-text);
}

/* Facility */
.kv-facility-bullets {
  list-style: none;
  padding: 0;
  margin: 1rem 0 0;
}

.kv-facility-bullets li {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--kv-text);
  margin-bottom: 0.5rem;
}

.kv-facility-bullets li i {
  color: var(--kv-green);
  margin-top: 0.15rem;
  font-size: 1rem;
}

.kv-room figcaption {
  margin-top: 0.5rem;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--kv-green);
}

.kv-room img {
  border-radius: 10px;
  width: 100%;
  height: 8rem;
  object-fit: cover;
  border: 1px solid var(--kv-border);
}

/* Path — bỏ HTML trong desc */
.kv-section--facility {
  padding-top: clamp(3.2rem, 5vw, 4.5rem);
  padding-bottom: clamp(2.8rem, 4.2vw, 3.9rem);
}

.kv-section--facility .kv-facility-layout {
  position: relative;
  z-index: 1;
  gap: clamp(1.75rem, 3vw, 3rem);
}

.kv-section--facility .kv-facility-copy {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
}

.kv-section--facility .kv-facility-gallery {
  align-items: stretch;
  width: 100%;
}

.kv-section--facility .kv-room {
  display: flex;
  min-width: 0;
  flex-direction: column;
}

.kv-section--facility .kv-room img {
  flex: 1 1 auto;
  height: auto;
  aspect-ratio: 16 / 10;
  box-shadow: 0 12px 28px rgba(6, 73, 45, 0.08);
}

.kv-section--facility .kv-room figcaption {
  min-height: 2.1rem;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  text-wrap: balance;
}

@media (min-width: 1024px) {
  .kv-section--facility .kv-facility-layout {
    grid-template-columns: minmax(18rem, 0.9fr) minmax(0, 1.55fr);
    align-items: center;
  }

  .kv-section--facility .kv-facility-copy {
    min-height: clamp(19rem, 24vw, 22rem);
  }

  .kv-section--facility .kv-facility-gallery {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: clamp(0.9rem, 1.4vw, 1.2rem);
    align-self: stretch;
    justify-self: start;
    max-width: min(100%, 46rem);
  }

  .kv-section--facility .kv-room img {
    height: auto;
    aspect-ratio: 16 / 9;
  }
}

@media (min-width: 1280px) {
  .kv-section--facility .kv-room img {
    height: auto;
  }
}

.kv-path-card__icon {
  font-size: 1.1rem !important;
}

/* Proof / Why */
.kv-why-item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--kv-border);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--kv-text);
}

.kv-why-item__ic {
  width: 1.75rem;
  height: 1.75rem;
  border-radius: 8px;
  background: #fff;
  border: 1px solid var(--kv-border);
  color: var(--kv-green);
  display: grid;
  place-items: center;
  font-size: 0.9rem;
  flex-shrink: 0;
}

.kv-teacher-card {
  background: #fff;
  border: 1px solid var(--kv-border);
  border-radius: var(--kv-radius);
  padding: 1.15rem;
  text-align: center;
  text-decoration: none;
  color: inherit;
  box-shadow: var(--kv-shadow);
  transition: transform 0.2s, box-shadow 0.2s;
  display: block;
}

.kv-teacher-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 14px 32px rgba(6, 73, 45, 0.12);
}

.kv-teacher-card img {
  width: 4rem;
  height: 4rem;
  border-radius: 50%;
  object-fit: cover;
  margin: 0 auto;
  border: 2px solid var(--kv-green-soft);
}

.kv-teacher-card h3 {
  margin: 0.75rem 0 0;
  font-size: 0.875rem;
  font-weight: 800;
  color: var(--kv-green);
}

.kv-testimonial {
  position: relative;
  padding: 1rem 0 1rem 2.75rem;
  border-bottom: 1px solid var(--kv-green-soft);
}

.kv-testimonial:last-child {
  border-bottom: none;
}

.kv-testimonial__quote {
  position: absolute;
  left: 0;
  top: 0.5rem;
  font-size: 1.75rem;
  color: var(--kv-green);
  opacity: 0.35;
  line-height: 1;
}

.kv-testimonial img {
  position: absolute;
  left: 0;
  top: 2rem;
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  object-fit: cover;
}

.kv-testimonial__stars {
  color: var(--kv-yellow);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
}

/* Process steps */
.kv-step {
  background: #fff;
  border: 1px solid var(--kv-border);
  border-radius: var(--kv-radius);
  padding: 1.35rem 1.15rem 1.15rem;
  position: relative;
  box-shadow: var(--kv-shadow);
}

.kv-step__num {
  position: absolute;
  top: -0.85rem;
  left: 1rem;
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  background: var(--kv-green);
  color: #fff;
  font-size: 0.8125rem;
  font-weight: 800;
  display: grid;
  place-items: center;
}

.kv-step__label {
  font-size: 0.75rem;
  font-weight: 800;
  color: var(--kv-green);
  margin: 0;
}

.kv-step h3 {
  margin: 0.35rem 0 0;
  font-size: 0.9375rem;
  font-weight: 800;
  color: var(--kv-text);
}

.kv-step p {
  margin: 0.5rem 0 0;
  font-size: 0.8125rem;
  color: var(--kv-muted);
  line-height: 1.5;
}

/* Contact */
.kv-contact {
  background:
    radial-gradient(circle at 25% 50%, rgba(10, 131, 68, 0.5), transparent 40%),
    linear-gradient(95deg, #004526, #0a6b3d 55%, #085a34);
  color: #fff;
}

.kv-contact__list {
  list-style: none;
  padding: 0;
  margin: 1rem 0 0;
}

.kv-contact__list li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 0.4rem;
}

.kv-contact__list i {
  color: var(--kv-yellow);
  font-size: 1rem;
}

.kv-form-panel {
  background: #fff;
  color: var(--kv-text);
  border-radius: var(--kv-radius);
  padding: 1.5rem;
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.18);
}

.kv-form-panel h2 {
  margin: 0;
  font-size: 0.8125rem;
  font-weight: 800;
  color: var(--kv-green);
  letter-spacing: 0.04em;
}

.kv-form-panel input,
.kv-form-panel select,
.kv-form-panel textarea {
  width: 100%;
  border: none;
  border-bottom: 1px solid var(--kv-border);
  padding: 0.55rem 0;
  font-size: 0.875rem;
  font-family: inherit;
  color: var(--kv-text);
  background: transparent;
}

.kv-form-panel input:focus,
.kv-form-panel select:focus,
.kv-form-panel textarea:focus {
  outline: none;
  border-bottom-color: var(--kv-green);
}

/* Course badge icon */
.kv-course-card__badge i {
  font-size: 1rem;
  color: #fff;
}

@media (max-width: 1023px) {
  .kv-hero:not(.kv-hero--fullbanner) {
    min-height: 0;
  }
  .kv-hero__inner {
    padding-top: 4.5rem;
    padding-bottom: 2rem;
  }
  .kv-hero--fullbanner .kv-hero__inner {
    padding-bottom: 4.75rem;
  }
  .kv-stats-wrap:not(.kv-hero-band + .kv-stats-wrap) {
    margin-top: 1rem;
  }
}

/* ── Section flow — liền mạch giữa các block ── */
.kv-home-flow {
  overflow-x: hidden;
}

.kv-section {
  position: relative;
}

.kv-section--process {
  background: linear-gradient(180deg, #fff 0%, var(--kv-green-soft) 100%);
  padding-bottom: 5rem;
}

.kv-section--process::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(11, 110, 62, 0.15), transparent);
}

/* Quy trình — card grid (không phụ thuộc premium.css) */
.kv-process-grid {
  display: grid;
  gap: 1.25rem;
  grid-template-columns: 1fr;
  margin-top: 2rem;
}

@media (min-width: 640px) {
  .kv-process-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.35rem;
  }
}

@media (min-width: 1100px) {
  .kv-process-grid {
    grid-template-columns: repeat(4, 1fr);
    gap: 1.15rem;
  }
}

.kv-process-card {
  position: relative;
  background: #fff;
  border: 1px solid var(--kv-border);
  border-radius: calc(var(--kv-radius) + 2px);
  padding: 1.75rem 1.35rem 1.5rem;
  text-align: center;
  box-shadow: 0 10px 32px rgba(6, 73, 45, 0.08);
  transition: transform 0.35s cubic-bezier(0.22, 1, 0.36, 1), box-shadow 0.35s;
}

.kv-process-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 18px 44px rgba(6, 73, 45, 0.14);
  border-color: rgba(255, 198, 23, 0.45);
}

.kv-process-card__num {
  width: 3rem;
  height: 3rem;
  margin: 0 auto 1rem;
  border-radius: 50%;
  background: linear-gradient(145deg, #0d7a45, var(--kv-green) 55%, #003d22);
  color: #fff;
  font-size: 1.0625rem;
  font-weight: 900;
  display: grid;
  place-items: center;
  box-shadow: 0 8px 22px rgba(11, 110, 62, 0.35);
}

.kv-process-card__icon {
  width: 2.75rem;
  height: 2.75rem;
  margin: 0 auto 0.85rem;
  border-radius: 12px;
  background: var(--kv-green-soft);
  color: var(--kv-green);
  display: grid;
  place-items: center;
  font-size: 1.35rem;
}

.kv-process-card h3 {
  margin: 0 0 0.5rem;
  font-size: 0.9375rem;
  font-weight: 800;
  color: var(--kv-green);
  line-height: 1.35;
}

.kv-process-card p {
  margin: 0;
  font-size: 0.8125rem;
  color: var(--kv-muted);
  line-height: 1.55;
}

.kv-process-card__line {
  display: none;
}

@media (min-width: 1100px) {
  .kv-process-card:not(:last-child)::after {
    content: "\ea6c";
    font-family: remixicon;
    position: absolute;
    right: -0.65rem;
    top: 3.25rem;
    font-size: 1rem;
    color: var(--kv-yellow);
    z-index: 2;
    text-shadow: 0 0 8px rgba(255, 198, 23, 0.5);
  }
}

/* Contact block */
.kv-contact {
  background: linear-gradient(125deg, #001a0e 0%, #005a32 38%, #0b8f4a 62%, #003d22 100%);
  color: #fff;
  position: relative;
  overflow: hidden;
}

.kv-contact::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(ellipse 55% 45% at 8% 50%, rgba(255, 198, 23, 0.18), transparent 55%);
}

.kv-contact__list {
  list-style: none;
  padding: 0;
  margin: 1.25rem 0 0;
}

.kv-contact__list li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  margin-bottom: 0.5rem;
  color: rgba(255, 255, 255, 0.9);
}

.kv-form-panel {
  background: #fff;
  border-radius: var(--kv-radius);
  padding: 1.75rem;
  color: var(--kv-text);
  box-shadow: 0 20px 56px rgba(0, 0, 0, 0.22);
}

.kv-form-panel h2 {
  margin: 0;
  font-size: 1rem;
  font-weight: 900;
  color: var(--kv-green);
}

.kv-form-panel input,
.kv-form-panel select,
.kv-form-panel textarea {
  width: 100%;
  padding: 0.75rem 0.85rem;
  border: 1px solid var(--kv-border);
  border-radius: 10px;
  font-size: 0.875rem;
  font-family: inherit;
  background: #fafcfb;
  box-sizing: border-box;
}

.kv-form-panel input:focus,
.kv-form-panel select:focus,
.kv-form-panel textarea:focus {
  outline: none;
  border-color: var(--kv-green);
  background: #fff;
}