/* ========================================
   CÁ VOI XANH — LANDING PAGE STYLES
   Vibrant Kids Theme v2
   ======================================== */

/* ── CSS Custom Properties ── */
:root {
  /* Primary */
  --sky: #38BDF8;
  --sky-dark: #0EA5E9;
  --sky-light: #E0F2FE;
  --sky-bg: #F0F9FF;

  /* Accents */
  --coral: #FB7185;
  --coral-dark: #F43F5E;
  --green: #4ADE80;
  --green-dark: #22C55E;
  --yellow: #FBBF24;
  --purple: #A78BFA;
  --purple-dark: #8B5CF6;
  --cyan: #22D3EE;
  --cyan-dark: #06B6D4;

  /* Neutrals */
  --white: #FFFFFF;
  --off-white: #F0F9FF;
  --dark: #0F172A;
  --text: #1E293B;
  --text-muted: #64748B;
  --border: #E2E8F0;

  /* Spacing */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;
  --section-gap: 80px;

  /* Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-pill: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.12);
  --shadow-card: 0 4px 20px rgba(56, 189, 248, 0.12);

  /* Fonts */
  --font: 'Nunito', 'Segoe UI', system-ui, sans-serif;

  /* Max width */
  --max-w: 1200px;
}

/* ── Reset & Base ── */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font);
  color: var(--text);
  line-height: 1.6;
  background: var(--white);
  overflow-x: hidden;
}

a {
  color: var(--sky-dark);
  text-decoration: none;
  transition: color 0.2s;
}

a:hover {
  color: var(--sky);
}

img {
  max-width: 100%;
  display: block;
}

.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

/* ── Section Titles ── */
.section-title {
  font-size: 2.25rem;
  font-weight: 800;
  text-align: center;
  margin-bottom: var(--space-md);
  color: var(--text);
}

.section-title--light {
  color: var(--white);
}

.section-subtitle {
  text-align: center;
  color: var(--text-muted);
  font-size: 1.1rem;
  margin-bottom: var(--space-2xl);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.section-subtitle--light {
  color: rgba(255, 255, 255, 0.85);
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 12px 24px;
  border-radius: var(--radius-pill);
  font-family: var(--font);
  font-weight: 700;
  font-size: 1rem;
  border: 2px solid transparent;
  cursor: pointer;
  transition: all 0.2s ease;
  text-decoration: none;
  white-space: nowrap;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn:active {
  transform: translateY(0);
}

.btn--primary {
  background: var(--sky);
  color: var(--white);
}

.btn--primary:hover {
  background: var(--sky-dark);
  color: var(--white);
}

.btn--coral {
  background: var(--coral);
  color: var(--white);
}

.btn--coral:hover {
  background: var(--coral-dark);
  color: var(--white);
}

.btn--blue {
  background: var(--sky);
  color: var(--white);
}

.btn--blue:hover {
  background: var(--sky-dark);
  color: var(--white);
}

.btn--green {
  background: var(--green);
  color: var(--dark);
}

.btn--green:hover {
  background: var(--green-dark);
  color: var(--white);
}

.btn--purple {
  background: var(--purple);
  color: var(--white);
}

.btn--purple:hover {
  background: var(--purple-dark);
  color: var(--white);
}

.btn--cyan {
  background: var(--cyan);
  color: var(--dark);
}

.btn--cyan:hover {
  background: var(--cyan-dark);
  color: var(--white);
}

.btn--pink {
  background: var(--coral);
  color: var(--white);
}

.btn--pink:hover {
  background: var(--coral-dark);
  color: var(--white);
}

.btn--outline {
  background: transparent;
  border-color: var(--white);
  color: var(--white);
}

.btn--outline:hover {
  background: rgba(255, 255, 255, 0.15);
  color: var(--white);
}

.btn--outline-light {
  background: transparent;
  border-color: rgba(255, 255, 255, 0.4);
  color: var(--white);
}

.btn--outline-light:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--white);
  color: var(--white);
}

.btn--sm {
  padding: 8px 20px;
  font-size: 0.9rem;
}

.btn--lg {
  padding: 16px 32px;
  font-size: 1.1rem;
}

.btn--block {
  display: flex;
  width: 100%;
}

/* ── HEADER ── */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  transition: box-shadow 0.3s;
}

.header.scrolled {
  box-shadow: var(--shadow-md);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.header__logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-weight: 900;
  font-size: 1.3rem;
  color: var(--sky-dark);
}

.header__logo:hover {
  color: var(--sky);
}

.logo-img {
  border-radius: 8px;
  object-fit: contain;
}

.header__phone {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-weight: 700;
  color: var(--coral);
  font-size: 1.05rem;
}

.header__phone:hover {
  color: var(--coral-dark);
}

.phone-icon {
  font-size: 1.2rem;
}

.header__nav {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.header__nav a {
  color: var(--text);
  font-size: 0.85rem;
  font-weight: 700;
  text-decoration: none;
  padding: 6px 2px;
  position: relative;
  transition: color 0.2s;
}

.header__nav a:hover {
  color: var(--sky);
}

.header__nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--sky);
  transition: width 0.2s;
}

.header__nav a:hover::after {
  width: 100%;
}

@media (max-width: 768px) {
  .header__nav {
    display: none;
  }
}

/* ── HERO ── */
.hero {
  position: relative;
  background: linear-gradient(135deg, var(--sky) 0%, #7DD3FC 40%, var(--sky-dark) 100%);
  padding: 140px 0 0;
  overflow: hidden;
  min-height: 600px;
}

/* Bubbles decoration */
.hero__bubbles {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.bubble {
  position: absolute;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  animation: float 8s ease-in-out infinite;
}

.bubble--1 {
  width: 80px;
  height: 80px;
  top: 15%;
  left: 10%;
  animation-delay: 0s;
}

.bubble--2 {
  width: 50px;
  height: 50px;
  top: 40%;
  right: 15%;
  animation-delay: 2s;
}

.bubble--3 {
  width: 120px;
  height: 120px;
  bottom: 30%;
  left: 5%;
  animation-delay: 4s;
  animation-duration: 10s;
}

.bubble--4 {
  width: 40px;
  height: 40px;
  top: 20%;
  right: 30%;
  animation-delay: 1s;
}

.bubble--5 {
  width: 60px;
  height: 60px;
  top: 60%;
  right: 8%;
  animation-delay: 3s;
}

@keyframes float {

  0%,
  100% {
    transform: translateY(0) scale(1);
    opacity: 0.4;
  }

  50% {
    transform: translateY(-30px) scale(1.1);
    opacity: 0.7;
  }
}

/* Hero layout with mascot */
.hero__layout {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-xl);
  padding-bottom: var(--space-lg);
}

.hero__content {
  flex: 1;
  text-align: left;
  color: var(--white);
}

.hero__mascot {
  flex-shrink: 0;
}

.mascot-img {
  width: 320px;
  height: 320px;
  object-fit: contain;
  filter: drop-shadow(0 10px 30px rgba(0, 0, 0, 0.15));
  animation: mascot-bounce 3s ease-in-out infinite;
}

@keyframes mascot-bounce {

  0%,
  100% {
    transform: translateY(0);
  }

  50% {
    transform: translateY(-15px);
  }
}

.hero__title {
  font-size: 3rem;
  font-weight: 900;
  line-height: 1.2;
  margin-bottom: var(--space-lg);
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.hero__title .highlight {
  color: var(--yellow);
  display: inline-block;
}

.hero__badges {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
}

.badge {
  padding: 8px 18px;
  border-radius: var(--radius-pill);
  font-weight: 700;
  font-size: 0.95rem;
  backdrop-filter: blur(10px);
}

.badge--blue {
  background: rgba(56, 189, 248, 0.35);
  color: var(--white);
  border: 1px solid rgba(255, 255, 255, 0.3);
}

.badge--pink {
  background: rgba(251, 113, 133, 0.35);
  color: var(--white);
  border: 1px solid rgba(255, 255, 255, 0.3);
}

.badge--green {
  background: rgba(74, 222, 128, 0.35);
  color: var(--white);
  border: 1px solid rgba(255, 255, 255, 0.3);
}

.badge--purple {
  background: rgba(167, 139, 250, 0.35);
  color: var(--white);
  border: 1px solid rgba(255, 255, 255, 0.3);
}

.badge--cyan {
  background: rgba(34, 211, 238, 0.35);
  color: var(--white);
  border: 1px solid rgba(255, 255, 255, 0.3);
}

.hero__slogan {
  font-size: 1.15rem;
  font-style: italic;
  margin-bottom: var(--space-xl);
  color: rgba(255, 255, 255, 0.95);
  font-weight: 600;
  text-shadow: 0 1px 4px rgba(0, 0, 0, 0.15);
}

.hero__ctas {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
}

/* Stats bar */
.hero__stats {
  position: relative;
  z-index: 2;
  padding: var(--space-xl) 0 var(--space-3xl);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-lg);
}

.stat {
  text-align: center;
  color: var(--white);
  padding: var(--space-lg);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.stat__number {
  font-size: 2.5rem;
  font-weight: 900;
  display: inline;
}

.stat__plus {
  font-size: 2rem;
  font-weight: 900;
}

.stat__label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  margin-top: var(--space-xs);
  opacity: 0.9;
}

.hero__wave {
  position: absolute;
  bottom: -1px;
  left: 0;
  right: 0;
  z-index: 3;
}

.hero__wave svg {
  display: block;
  width: 100%;
  height: auto;
}

/* ── SERVICES ── */
.services {
  padding: var(--section-gap) 0;
  background: var(--white);
}

.services-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-lg);
}

.service-card {
  flex: 0 1 calc(33.333% - var(--space-lg));
  min-width: 280px;
}

.service-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  text-align: center;
  border: 2px solid var(--border);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
}

.service-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-card);
  border-color: transparent;
}

.service-card--blue::before {
  background: var(--sky);
}

.service-card--blue:hover {
  border-color: var(--sky);
}

.service-card--pink::before {
  background: var(--coral);
}

.service-card--pink:hover {
  border-color: var(--coral);
}

.service-card--green::before {
  background: var(--green);
}

.service-card--green:hover {
  border-color: var(--green);
}

.service-card--purple::before {
  background: var(--purple);
}

.service-card--purple:hover {
  border-color: var(--purple);
}

.service-card--cyan::before {
  background: var(--cyan);
}

.service-card--cyan:hover {
  border-color: var(--cyan);
}

.service-card__icon {
  font-size: 3rem;
  margin-bottom: var(--space-md);
}

.service-card__title {
  font-size: 1.3rem;
  font-weight: 800;
  margin-bottom: var(--space-sm);
}

.service-card__desc {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: var(--space-md);
  line-height: 1.5;
}

.service-card__price {
  font-size: 1.1rem;
  color: var(--text);
  margin-bottom: var(--space-md);
}

.service-card__price strong {
  font-size: 1.35rem;
  color: var(--coral);
}

/* ── WHY US ── */
.why-us {
  position: relative;
  background: linear-gradient(135deg, var(--sky) 0%, #7DD3FC 50%, var(--cyan) 100%);
  padding: var(--space-3xl) 0 var(--section-gap);
}

.why-us__wave-top {
  position: absolute;
  top: -1px;
  left: 0;
  right: 0;
}

.why-us__wave-top svg {
  display: block;
  width: 100%;
  height: auto;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-lg);
}

.feature-card {
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  text-align: center;
  color: var(--white);
  transition: all 0.3s ease;
}

.feature-card:hover {
  background: rgba(255, 255, 255, 0.25);
  transform: translateY(-4px);
}

.feature-card__icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-md);
  font-size: 1.8rem;
}

.feature-card__icon--blue {
  background: rgba(56, 189, 248, 0.3);
}

.feature-card__icon--pink {
  background: rgba(251, 113, 133, 0.3);
}

.feature-card__icon--green {
  background: rgba(74, 222, 128, 0.3);
}

.feature-card__icon--purple {
  background: rgba(167, 139, 250, 0.3);
}

.feature-card h3 {
  font-size: 1.2rem;
  font-weight: 800;
  margin-bottom: var(--space-sm);
}

.feature-card p {
  font-size: 0.95rem;
  opacity: 0.9;
  line-height: 1.5;
}

/* ── COMMUNITY ── */
.community {
  padding: var(--section-gap) 0;
  background: var(--sky-bg);
}

.community-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
  margin-bottom: var(--space-xl);
}

.community-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  border: 1px solid var(--border);
  transition: all 0.3s ease;
  text-align: center;
}

.community-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card);
}

.community-card--main {
  border-color: var(--coral);
  border-width: 2px;
  background: linear-gradient(135deg, rgba(251, 113, 133, 0.05), rgba(56, 189, 248, 0.05));
}

.community-card__icon {
  font-size: 2.5rem;
  margin-bottom: var(--space-md);
}

.community-card h3 {
  font-size: 1.1rem;
  font-weight: 800;
  margin-bottom: var(--space-sm);
  color: var(--text);
}

.community-card p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.community-origin {
  background: linear-gradient(135deg, var(--sky-light), rgba(56, 189, 248, 0.1));
  border-radius: var(--radius-md);
  padding: var(--space-lg) var(--space-xl);
  text-align: center;
  border: 1px solid rgba(56, 189, 248, 0.2);
}

.community-origin p {
  font-size: 0.95rem;
  color: var(--text);
  line-height: 1.6;
  margin: 0;
}

.community-video {
  margin-top: var(--space-xl);
  text-align: center;
}

.community-video h3 {
  font-size: 1.2rem;
  font-weight: 800;
  margin-bottom: var(--space-md);
  color: var(--text);
}

.video-embed {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}

.video-embed iframe {
  display: block;
}

@media (max-width: 1024px) {
  .community-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 480px) {
  .community-grid {
    grid-template-columns: 1fr;
  }
}

/* ── PRICING ── */
.pricing {
  padding: var(--section-gap) 0;
  background: var(--white);
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
  align-items: start;
}

.pricing-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  border: 2px solid var(--border);
  position: relative;
  transition: all 0.3s ease;
}

.pricing-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.pricing-card--featured {
  border-color: var(--coral);
  box-shadow: var(--shadow-lg);
  transform: scale(1.04);
}

.pricing-card--featured:hover {
  transform: scale(1.04) translateY(-4px);
}

.pricing-card__ribbon {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--coral);
  color: var(--white);
  padding: 6px 20px;
  border-radius: var(--radius-pill);
  font-weight: 700;
  font-size: 0.85rem;
  white-space: nowrap;
}

.pricing-card__header {
  text-align: center;
  margin-bottom: var(--space-md);
  padding-top: var(--space-sm);
}

.pricing-card__emoji {
  font-size: 2.5rem;
  display: block;
  margin-bottom: var(--space-sm);
}

.pricing-card__header h3 {
  font-size: 1.4rem;
  font-weight: 800;
}

.pricing-card__price {
  text-align: center;
  font-size: 1.2rem;
  margin-bottom: var(--space-xs);
}

.pricing-card__price strong {
  font-size: 2rem;
  color: var(--coral);
}

.pricing-card__unit {
  text-align: center;
  color: var(--text-muted);
  font-weight: 600;
  margin-bottom: var(--space-lg);
}

.pricing-card__features {
  list-style: none;
  margin-bottom: var(--space-lg);
}

.pricing-card__features li {
  padding: var(--space-sm) 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.95rem;
}

.pricing-card__features li:last-child {
  border-bottom: none;
}

/* ── FAQ ── */
.faq {
  position: relative;
  padding: var(--space-3xl) 0 var(--section-gap);
  background: var(--sky-bg);
}

.faq__wave-top {
  position: absolute;
  top: -1px;
  left: 0;
  right: 0;
  transform: rotate(180deg);
}

.faq__wave-top svg {
  display: block;
  width: 100%;
  height: auto;
}

.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background: var(--white);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
}

.faq-item__question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-lg);
  background: none;
  border: none;
  cursor: pointer;
  font-family: var(--font);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text);
  text-align: left;
  transition: background 0.2s;
}

.faq-item__question:hover {
  background: var(--off-white);
}

.faq-item__arrow {
  font-size: 0.8rem;
  transition: transform 0.3s ease;
  flex-shrink: 0;
  margin-left: var(--space-md);
}

.faq-item.active .faq-item__arrow {
  transform: rotate(180deg);
}

.faq-item__answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.3s ease;
}

.faq-item__answer p {
  padding: 0 var(--space-lg) var(--space-lg);
  color: var(--text-muted);
  line-height: 1.7;
}

.faq-item.active .faq-item__answer {
  max-height: 300px;
}

/* ── NEWS ── */
.news {
  padding: var(--section-gap) 0;
  background: var(--white);
}

.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}

.news-card {
  background: var(--off-white);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  border: 1px solid var(--border);
  transition: all 0.3s ease;
}

.news-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card);
}

.news-card__meta {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
  font-size: 0.8rem;
}

.news-card__meta time {
  color: var(--text-muted);
  font-weight: 600;
}

.news-card__tag {
  background: var(--sky-light);
  color: var(--sky-dark);
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  font-weight: 700;
  font-size: 0.75rem;
}

.news-card h3 {
  font-size: 1.05rem;
  font-weight: 800;
  margin-bottom: var(--space-sm);
  color: var(--text);
  line-height: 1.4;
}

.news-card p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.6;
}

@media (max-width: 768px) {
  .news-grid {
    grid-template-columns: 1fr;
    max-width: 500px;
    margin: 0 auto;
  }
}

/* ── CONTACT / CTA ── */
.contact {
  padding: var(--section-gap) 0;
  background: linear-gradient(135deg, var(--sky) 0%, var(--coral) 100%);
  color: var(--white);
}

.contact-header {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-lg);
  margin-bottom: var(--space-2xl);
}

.contact-mascot {
  filter: drop-shadow(0 4px 12px rgba(0, 0, 0, 0.15));
  animation: mascot-bounce 3s ease-in-out infinite;
  flex-shrink: 0;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2xl);
  align-items: start;
}

.contact-form {
  background: rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
}

.form-group {
  margin-bottom: var(--space-md);
}

.form-group label {
  display: block;
  font-weight: 700;
  margin-bottom: var(--space-xs);
  font-size: 0.95rem;
}

.form-group input,
.form-group select {
  width: 100%;
  padding: 14px var(--space-md);
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.15);
  color: var(--white);
  font-family: var(--font);
  font-size: 1rem;
  transition: border-color 0.2s;
}

.form-group input::placeholder {
  color: rgba(255, 255, 255, 0.6);
}

.form-group input:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--yellow);
  background: rgba(255, 255, 255, 0.2);
}

.form-group select {
  cursor: pointer;
}

.form-group select option {
  color: var(--text);
  background: var(--white);
}

.contact-quick {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.contact-quick h3 {
  font-size: 1.3rem;
  font-weight: 800;
}

.contact-btn {
  font-size: 1.05rem;
}

.contact-hours {
  background: rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  text-align: center;
  margin-top: var(--space-sm);
}

.contact-hours p:first-child {
  font-weight: 700;
  font-size: 1.1rem;
  margin-bottom: var(--space-sm);
}

/* ── MAP ── */
.map {
  padding: var(--section-gap) 0;
  background: var(--white);
}

.map__embed {
  margin-bottom: var(--space-lg);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.map__directions {
  text-align: center;
}

/* ── FOOTER ── */
.footer {
  position: relative;
  background: var(--dark);
  color: rgba(255, 255, 255, 0.8);
  padding-top: var(--space-3xl);
}

.footer__wave-top {
  position: absolute;
  top: -1px;
  left: 0;
  right: 0;
}

.footer__wave-top svg {
  display: block;
  width: 100%;
  height: auto;
}

.footer__inner {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr;
  gap: var(--space-2xl);
  padding: var(--space-2xl) 0;
}

.footer__logo {
  font-size: 1.5rem;
  font-weight: 900;
  color: var(--sky);
  margin-bottom: var(--space-md);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.footer__logo-img {
  border-radius: 8px;
  object-fit: contain;
}

.footer__legal {
  font-size: 0.9rem;
  margin-bottom: var(--space-xs);
  opacity: 0.7;
}

.footer__contact h4,
.footer__social h4 {
  font-size: 1.1rem;
  color: var(--white);
  margin-bottom: var(--space-md);
}

.footer__contact p {
  font-size: 0.95rem;
  margin-bottom: var(--space-sm);
}

.footer__contact a {
  color: var(--sky);
}

.footer__contact a:hover {
  color: var(--yellow);
}

.social-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.social-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 10px var(--space-md);
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.95rem;
  transition: all 0.2s;
  color: var(--white);
}

.social-link--fb {
  background: rgba(59, 89, 152, 0.3);
}

.social-link--fb:hover {
  background: rgba(59, 89, 152, 0.6);
  color: var(--white);
}

.social-link--yt {
  background: rgba(255, 0, 0, 0.2);
}

.social-link--yt:hover {
  background: rgba(255, 0, 0, 0.4);
  color: var(--white);
}

.social-link--zalo {
  background: rgba(0, 106, 255, 0.2);
}

.social-link--zalo:hover {
  background: rgba(0, 106, 255, 0.4);
  color: var(--white);
}

.footer__bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: var(--space-lg) 0;
  text-align: center;
  font-size: 0.85rem;
  opacity: 0.6;
}

/* ── RESPONSIVE ── */

/* Tablet Landscape (1024px) */
@media (max-width: 1024px) {
  .services-grid {
    justify-content: center;
  }

  .service-card {
    flex: 0 1 calc(50% - var(--space-lg));
    min-width: 240px;
  }

  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .pricing-grid {
    grid-template-columns: repeat(2, 1fr);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
  }

  .pricing-card--featured {
    transform: none;
  }

  .pricing-card--featured:hover {
    transform: translateY(-4px);
  }

  /* Third pricing card spans full width centered */
  .pricing-card:nth-child(3) {
    grid-column: 1 / -1;
    max-width: 340px;
    justify-self: center;
  }

  .hero__layout {
    flex-direction: column;
    text-align: center;
  }

  .hero__content {
    text-align: center;
  }

  .hero__badges {
    justify-content: center;
  }

  .hero__ctas {
    justify-content: center;
  }

  .hero__mascot {
    display: none;
  }

  .contact-header {
    flex-direction: column;
    text-align: center;
  }

  .contact-mascot {
    width: 80px;
    height: 80px;
  }

  .footer__inner {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .footer__logo {
    justify-content: center;
  }

  .social-links {
    align-items: center;
  }
}

/* Tablet Portrait (768px) */
@media (max-width: 768px) {
  :root {
    --section-gap: 48px;
  }

  .hero__title {
    font-size: 2rem;
  }

  .hero {
    padding-top: 100px;
    min-height: auto;
  }

  .hero__mascot {
    display: none;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .service-card {
    flex: 0 1 calc(50% - var(--space-md));
    min-width: 220px;
  }

  .pricing-grid {
    grid-template-columns: 1fr;
    max-width: 400px;
  }

  .pricing-card:nth-child(3) {
    max-width: none;
  }

  .features-grid {
    grid-template-columns: 1fr 1fr;
  }

  .section-title {
    font-size: 1.75rem;
  }

  .contact-grid {
    grid-template-columns: 1fr;
  }

  .contact-header {
    flex-direction: column;
  }

  .contact-mascot {
    width: 64px;
    height: 64px;
  }

  .header__phone span:not(.phone-icon) {
    display: none;
  }

  .header__cta {
    padding: 10px 16px;
    font-size: 0.85rem;
  }

  .hero__ctas {
    flex-direction: column;
    align-items: center;
  }

  .hero__ctas .btn {
    width: 100%;
    max-width: 300px;
  }

  /* Bigger touch targets on mobile */
  .faq-item__question {
    padding: var(--space-lg) var(--space-md);
    min-height: 56px;
  }

  .btn--sm {
    padding: 12px 24px;
    font-size: 0.95rem;
  }
}

/* Mobile (480px) */
@media (max-width: 480px) {
  .hero__title {
    font-size: 1.65rem;
  }

  .hero__badges {
    gap: var(--space-xs);
  }

  .badge {
    font-size: 0.8rem;
    padding: 6px 12px;
  }

  .stats-grid {
    gap: var(--space-sm);
  }

  .stat {
    padding: var(--space-md);
  }

  .stat__number {
    font-size: 1.8rem;
  }

  .features-grid {
    grid-template-columns: 1fr;
  }

  .service-card {
    flex: 1 1 100%;
    min-width: 0;
  }

  .services-grid {
    max-width: 400px;
    margin-left: auto;
    margin-right: auto;
  }

  .header__inner {
    height: 56px;
    padding: 0 var(--space-md);
  }

  .header__logo {
    font-size: 1.1rem;
  }

  .logo-img {
    width: 36px !important;
    height: 36px !important;
  }

  .section-title {
    font-size: 1.5rem;
  }

  .section-subtitle {
    font-size: 0.95rem;
  }

  /* Form inputs larger tap area */
  .form-group input,
  .form-group select {
    padding: 16px var(--space-md);
    font-size: 1rem;
  }

  .contact-quick h3 {
    font-size: 1.15rem;
    text-align: center;
  }
}

/* Small Mobile (360px) */
@media (max-width: 360px) {
  .hero__title {
    font-size: 1.4rem;
  }

  .hero__slogan {
    font-size: 0.95rem;
  }

  .header__cta {
    padding: 8px 12px;
    font-size: 0.8rem;
  }

  .stat__number {
    font-size: 1.5rem;
  }

  .stat__label {
    font-size: 0.75rem;
  }

  .pricing-card__price strong {
    font-size: 1.5rem;
  }

  .container {
    padding: 0 var(--space-md);
  }
}

/* ── Floating Zalo button (Mobile) ── */
.fab-zalo {
  display: none;
}

@media (max-width: 768px) {
  .fab-zalo {
    display: flex;
    align-items: center;
    justify-content: center;
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: #0068FF;
    color: var(--white);
    font-size: 1.5rem;
    box-shadow: 0 4px 16px rgba(0, 104, 255, 0.4);
    z-index: 99;
    text-decoration: none;
    transition: transform 0.2s, box-shadow 0.2s;
    animation: fab-pulse 2s ease-in-out infinite;
  }

  .fab-zalo:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 24px rgba(0, 104, 255, 0.5);
    color: var(--white);
  }

  @keyframes fab-pulse {

    0%,
    100% {
      box-shadow: 0 4px 16px rgba(0, 104, 255, 0.4);
    }

    50% {
      box-shadow: 0 4px 24px rgba(0, 104, 255, 0.6);
    }
  }
}

/* ── Animations on scroll ── */
.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── Toast animation ── */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateX(-50%) translateY(20px);
  }

  to {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
  }
}

/* ========================================
   SUB-PAGES ADDITIONAL STYLES
   (boi.html, bong-ro.html, cau-long.html, pickleball.html)
   ======================================== */

/* ── Stats Row ── */
.stats-row {
  display: flex;
  justify-content: center;
  gap: 48px;
  flex-wrap: wrap;
}

.stat {
  text-align: center;
}

.stat__number {
  display: block;
  font-size: 2rem;
  font-weight: 900;
  color: var(--sky-dark);
  line-height: 1.2;
}

.stat__label {
  display: block;
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-top: 4px;
  font-weight: 600;
}

/* ── Pricing Card Color Variants ── */
.pricing-card--green {
  border-color: var(--green);
}

.pricing-card--green .pricing-card__ribbon {
  background: var(--green-dark);
}

.pricing-card--blue {
  border-color: var(--sky);
}

.pricing-card--blue .pricing-card__ribbon {
  background: var(--sky-dark);
}

.pricing-card--purple {
  border-color: var(--purple);
}

.pricing-card--purple .pricing-card__ribbon {
  background: var(--purple-dark);
}

.pricing-card--coral {
  border-color: var(--coral);
}

.pricing-card--coral .pricing-card__ribbon {
  background: var(--coral-dark);
}

/* ── Pricing Card Icon (for sub-pages) ── */
.pricing-card__icon {
  font-size: 2.5rem;
  margin-bottom: 8px;
  text-align: center;
}

.pricing-card h3 {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--dark);
  margin-bottom: 8px;
  text-align: center;
}

.pricing-card>p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.5;
  margin-bottom: 16px;
  text-align: center;
}

.pricing-card .btn--sm {
  display: block;
  margin-top: auto;
  text-align: center;
}

/* ── Responsive Sub-Pages ── */
@media (max-width: 768px) {
  .stats-row {
    gap: 24px;
  }

  .stat__number {
    font-size: 1.6rem;
  }

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

/* ── Features Grid & Cards ── */
.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 32px;
}

.feature-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  transition: all 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.feature-card h3 {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--dark);
  margin-bottom: 8px;
}

.feature-card p {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin: 0;
}

/* ── Feature Card Icon Variants ── */
.feature-card__icon {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 16px;
}

.feature-card__icon--blue {
  background: var(--sky-light);
  color: var(--sky-dark);
}

.feature-card__icon--green {
  background: #DCFCE7;
  color: var(--green-dark);
}

.feature-card__icon--coral {
  background: #FFE4E6;
  color: var(--coral-dark);
}

.feature-card__icon--purple {
  background: #EDE9FE;
  color: var(--purple-dark);
}

/* ── Responsive Features ── */
@media (max-width: 1024px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 480px) {
  .features-grid {
    grid-template-columns: 1fr;
  }
}