:root {
  --tkd-blue: #1451A3;
  --tkd-blue-dark: #0f3d7a;
  --tkd-blue-light: #1a6bd4;
  --tkd-white: #ffffff;
  --tkd-black: #000000;
  --tkd-dark: #111111;
  --tkd-darker: #000000;
  --tkd-light: #f0f4f8;
  --tkd-gray: #5a6778;
  --font-display: 'Oswald', sans-serif;
  --font-body: 'Raleway', sans-serif;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  color: #1e293b;
  background: var(--tkd-light);
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 { font-family: var(--font-display); }

.text-blue { color: var(--tkd-blue) !important; }

.navbar {
  background: transparent;
  transition: all 0.4s ease;
  padding: 1rem 0;
  z-index: 1030;
}
.navbar-scrolled {
  background: rgba(0, 0, 0, 0.95);
  padding: 0.5rem 0;
  box-shadow: 0 2px 20px rgba(0,0,0,0.3);
}
.navbar-brand {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  color: #fff !important;
  text-decoration: none;
  letter-spacing: 1px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.navbar-logo {
  height: 40px;
  width: auto;
  border-radius: 50%;
}
.navbar .nav-link {
  color: rgba(255,255,255,0.85) !important;
  font-weight: 500;
  text-transform: uppercase;
  font-size: 0.8rem;
  letter-spacing: 0.5px;
  padding: 0.5rem 1rem !important;
  transition: color 0.3s;
}
.navbar .nav-link:hover,
.navbar .nav-link.active { color: var(--tkd-blue-light) !important; }
.navbar .nav-link:active {
  animation: navClick 0.3s ease;
}
@keyframes navClick {
  0% { transform: scale(1); }
  50% { transform: scale(0.92); }
  100% { transform: scale(1); }
}

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(0,0,0,0.85) 0%, rgba(17,17,17,0.8) 50%, rgba(20,81,163,0.3) 100%),
              url('../assets/img/hero-bg.jpg') center/cover no-repeat;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle at 30% 50%, rgba(20,81,163,0.15) 0%, transparent 50%),
              radial-gradient(circle at 70% 50%, rgba(255,255,255,0.03) 0%, transparent 50%);
  animation: heroGlow 8s ease-in-out infinite alternate;
}
@keyframes heroGlow {
  0% { transform: translate(0,0) rotate(0deg); }
  100% { transform: translate(-2%,-2%) rotate(3deg); }
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><path d="M50 10 L58 38 L88 38 L64 56 L72 85 L50 67 L28 85 L36 56 L12 38 L42 38 Z" fill="rgba(255,255,255,0.02)"/></svg>') repeat;
  background-size: 100px 100px;
  opacity: 0.3;
}
.hero-content { position: relative; z-index: 2; }
.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 8vw, 6rem);
  font-weight: 700;
  line-height: 1.1;
  text-transform: uppercase;
  letter-spacing: 4px;
}
.hero-title .text-blue { display: block; font-size: 1.2em; }
.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.5rem);
  letter-spacing: 8px;
  text-transform: uppercase;
  margin-top: 1.5rem;
  opacity: 0.8;
}
.hero-desc {
  font-size: 1.1rem;
  margin-top: 0.5rem;
  opacity: 0.7;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

.btn-tkd {
  background: linear-gradient(135deg, var(--tkd-blue), var(--tkd-blue-dark));
  color: #fff;
  border: none;
  font-family: var(--font-display);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  padding: 0.8rem 2rem;
  transition: all 0.3s ease;
}
.btn-tkd:hover {
  background: linear-gradient(135deg, var(--tkd-blue-dark), #091f4a);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(20,81,163,0.4);
}

.section {
  padding: 5rem 0;
}
.section-dark {
  background: linear-gradient(135deg, var(--tkd-darker), var(--tkd-dark));
  color: #fff;
}
.section-title {
  font-family: var(--font-display);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 2px;
  font-size: clamp(1.8rem, 4vw, 2.8rem);
}
.section-dark .section-title { color: #fff; }

.divider {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  margin-top: 1rem;
}
.divider::before,
.divider::after {
  content: '';
  width: 60px;
  height: 2px;
  background: var(--tkd-blue);
}
.divider span {
  font-size: 1.5rem;
  color: var(--tkd-blue);
}
.section-dark .divider::before,
.section-dark .divider::after { background: var(--tkd-white); }
.section-dark .divider span { color: var(--tkd-white); }

.stat-box {
  padding: 1.5rem 1rem;
  border: 2px solid var(--tkd-blue);
  border-radius: 12px;
  transition: transform 0.3s, box-shadow 0.3s;
}
.stat-box:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 30px rgba(20,81,163,0.15);
}
.stat-number {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--tkd-blue);
  display: block;
  line-height: 1;
}
.stat-box p {
  margin-top: 0.5rem;
  margin-bottom: 0;
  font-weight: 600;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.program-card {
  background: #fff;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(0,0,0,0.08);
  transition: all 0.3s ease;
  height: 100%;
}
.program-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.15);
}
.program-img {
  position: relative;
  overflow: hidden;
  aspect-ratio: 3/2;
}
.program-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s;
}
.program-card:hover .program-img img { transform: scale(1.1); }
.program-badge {
  position: absolute;
  top: 12px;
  right: 12px;
  background: var(--tkd-blue);
  color: #fff;
  padding: 0.3rem 1rem;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.program-body { padding: 1.5rem; }
.program-body h4 { font-weight: 600; margin-bottom: 0.5rem; }
.program-body p {
  color: var(--tkd-gray);
  font-size: 0.9rem;
  margin-bottom: 1rem;
}
.program-meta {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}
.program-meta span {
  font-size: 0.8rem;
  color: var(--tkd-gray);
  display: flex;
  align-items: center;
  gap: 0.3rem;
}
.program-meta i { color: var(--tkd-blue); }

.instructor-card {
  background: #fff;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(0,0,0,0.08);
  transition: all 0.3s ease;
  height: 100%;
}
.instructor-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.15);
}
.instructor-img {
  position: relative;
  aspect-ratio: 4/5;
  overflow: hidden;
}
.instructor-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s;
}
.instructor-card:hover .instructor-img img { transform: scale(1.05); }
.instructor-rank {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(transparent, rgba(0,0,0,0.8));
  color: var(--tkd-white);
  padding: 2rem 1rem 1rem;
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  text-align: center;
}
.instructor-body { padding: 1.5rem; text-align: center; }
.instructor-body h4 { font-size: 1.1rem; font-weight: 600; }
.instructor-body p {
  font-size: 0.85rem;
  color: var(--tkd-gray);
  margin: 0.5rem 0;
}
.badge-tkd {
  display: inline-block;
  background: var(--tkd-blue);
  color: #fff;
  padding: 0.2rem 1rem;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.instructor-social { margin-top: 0.8rem; }
.instructor-social a {
  display: inline-block;
  width: 35px;
  height: 35px;
  line-height: 35px;
  text-align: center;
  border-radius: 50%;
  background: var(--tkd-light);
  color: var(--tkd-dark);
  margin: 0 3px;
  transition: all 0.3s;
}
.instructor-social a:hover {
  background: var(--tkd-blue);
  color: #fff;
}

.event-card {
  display: flex;
  gap: 1.5rem;
  background: #fff;
  border-radius: 16px;
  padding: 1.5rem;
  box-shadow: 0 4px 20px rgba(0,0,0,0.08);
  transition: all 0.3s ease;
  height: 100%;
  align-items: flex-start;
}
.event-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.15);
}
.event-date {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-width: 80px;
  height: 90px;
  background: var(--tkd-blue);
  color: #fff;
  border-radius: 14px;
  flex-shrink: 0;
}
.event-day {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  line-height: 1;
}
.event-month {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-top: 2px;
}
.event-body h4 {
  font-weight: 600;
  margin-bottom: 0.4rem;
}
.event-meta {
  font-size: 0.8rem;
  color: var(--tkd-gray);
  margin-bottom: 0.5rem;
}
.event-meta i { color: var(--tkd-blue); margin-right: 3px; }
.event-body p {
  font-size: 0.9rem;
  color: var(--tkd-gray);
  margin-bottom: 0.8rem;
}

.gallery-item {
  position: relative;
  display: block;
  border-radius: 12px;
  overflow: hidden;
}
.gallery-item img {
  width: 100%;
  aspect-ratio: 3/2;
  object-fit: cover;
  transition: transform 0.5s;
}
.gallery-item:hover img { transform: scale(1.1); }
.gallery-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.3s;
  color: #fff;
  font-size: 2rem;
}
.gallery-item:hover .gallery-overlay { opacity: 1; }

.testimonial-card {
  max-width: 650px;
  margin: 0 auto;
  padding: 2rem;
}
.testimonial-avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid var(--tkd-blue);
  margin-bottom: 1.5rem;
}
.testimonial-text {
  font-size: 1.1rem;
  font-style: italic;
  line-height: 1.7;
  color: var(--tkd-gray);
}
.testimonial-card h5 {
  font-family: var(--font-display);
  font-weight: 600;
  margin-top: 1rem;
  margin-bottom: 0.25rem;
}
.testimonial-card span {
  font-size: 0.85rem;
  color: var(--tkd-gray);
}
.stars { margin-top: 1rem; }
.stars i { color: var(--tkd-blue); margin: 0 2px; }
#testimonialCarousel .carousel-control-prev,
#testimonialCarousel .carousel-control-next {
  width: 40px;
  height: 40px;
  top: 50%;
  transform: translateY(-50%);
  background: var(--tkd-blue);
  border-radius: 50%;
  opacity: 0.8;
}
#testimonialCarousel .carousel-control-prev { left: -20px; }
#testimonialCarousel .carousel-control-next { right: -20px; }

.contact-info { padding-right: 2rem; }
.contact-item {
  display: flex;
  gap: 1rem;
  margin-bottom: 1.5rem;
}
.contact-item i {
  font-size: 1.8rem;
  color: var(--tkd-blue-light);
  min-width: 40px;
  padding-top: 0.2rem;
}
.contact-item h5 {
  margin-bottom: 0.25rem;
  font-weight: 600;
}
.contact-item p {
  margin-bottom: 0;
  color: rgba(255,255,255,0.7);
  line-height: 1.6;
}
.btn-social {
  width: 45px;
  height: 45px;
  border-radius: 50% !important;
  padding: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 2px solid rgba(255,255,255,0.3);
  color: #fff;
  transition: all 0.3s;
}
.btn-social:hover {
  border-color: var(--tkd-blue-light);
  color: var(--tkd-blue-light);
  background: transparent;
}

.form-floating > label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--tkd-gray);
}
.form-control, .form-select {
  border: 2px solid #d0d8e0;
  border-radius: 12px;
  padding: 1rem 0.75rem;
  transition: border-color 0.3s, box-shadow 0.3s;
}
.form-control:focus, .form-select:focus {
  border-color: var(--tkd-blue);
  box-shadow: 0 0 0 3px rgba(20,81,163,0.15);
}
.form-floating > .form-control:focus ~ label,
.form-floating > .form-control:not(:placeholder-shown) ~ label,
.form-floating > .form-select ~ label {
  color: var(--tkd-blue);
  opacity: 0.8;
}
.form-floating > .form-control:focus ~ label i,
.form-floating > .form-control:not(:placeholder-shown) ~ label i,
.form-floating > .form-select ~ label i {
  color: var(--tkd-blue);
}

.footer {
  background: var(--tkd-darker);
  color: rgba(255,255,255,0.6);
  padding: 2rem 0;
  font-size: 0.9rem;
}
.footer-brand {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 700;
  color: #fff;
  text-decoration: none;
}
.footer-brand i { color: var(--tkd-blue-light); margin-right: 8px; }
.footer a { transition: color 0.3s; }
.footer a:hover { color: var(--tkd-blue-light) !important; }

@media (max-width: 992px) {
  .hero-title { font-size: clamp(2rem, 10vw, 4rem); }
  .hero-subtitle { letter-spacing: 4px; }
  .contact-info { padding-right: 0; }
}

@media (max-width: 768px) {
  .section { padding: 3rem 0; }
  .hero-cta .btn { display: block; width: 100%; margin: 0.5rem 0 !important; }
  #testimonialCarousel .carousel-control-prev { left: 0; }
  #testimonialCarousel .carousel-control-next { right: 0; }
}

@media (max-width: 576px) {
  .hero-title { letter-spacing: 2px; }
  .hero-subtitle { letter-spacing: 2px; font-size: 0.9rem; }
  .divider::before, .divider::after { width: 30px; }
}