:root {
  --primary: #153e90;
  --primary-dark: #06245c;
  --secondary: #ff7a18;
  --accent: #00b4d8;
  --yellow: #ffd166;
  --green: #06d6a0;
  --pink: #ef476f;
  --purple: #7b2cbf;

  --text: #172033;
  --muted: #5d6b82;
  --light: #f6f9ff;
  --white: #ffffff;

  --shadow: 0 18px 40px rgba(21, 62, 144, 0.18);
  --radius: 22px;
  --max-width: 1180px;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Inter", Arial, sans-serif;
  color: var(--text);
  background: var(--light);
  line-height: 1.6;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

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

.container {
  width: min(92%, var(--max-width));
  margin: 0 auto;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 10px;
  background: var(--primary);
  color: white;
  padding: 10px 14px;
  z-index: 9999;
  border-radius: 8px;
}

.skip-link:focus {
  left: 10px;
}

/* Header */

.site-header {
  background:
    radial-gradient(circle at top left, rgba(255, 122, 24, 0.18), transparent 34%),
    radial-gradient(circle at top right, rgba(0, 180, 216, 0.18), transparent 36%),
    #ffffff;
  padding: 18px 0;
  border-bottom: 1px solid rgba(21, 62, 144, 0.1);
}

.header-grid {
  display: grid;
  grid-template-columns: 170px 1fr 170px;
  align-items: center;
  gap: 20px;
}

.header-logo {
  width: 150px;
  height: 90px;
  object-fit: contain;
  justify-self: center;
}

.header-title-block {
  text-align: center;
}

.mantra-line {
  font-size: clamp(1rem, 2.2vw, 1.7rem);
  font-weight: 900;
  color: var(--primary-dark);
  line-height: 1.25;
}

.school-name {
  margin-top: 8px;
  font-size: clamp(1rem, 1.8vw, 1.45rem);
  font-weight: 800;
  color: var(--primary);
}

.college-name {
  margin-top: 3px;
  font-size: clamp(1.15rem, 2.1vw, 1.8rem);
  font-weight: 900;
  color: #111827;
}

/* Navbar */

.navbar {
  position: sticky;
  top: 0;
  z-index: 999;
  background: linear-gradient(90deg, var(--primary-dark), var(--primary), var(--purple));
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.18);
}

.nav-inner {
  min-height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: relative;
}

.nav-logo {
  color: white;
  font-weight: 900;
  letter-spacing: 0.5px;
  font-size: 1.25rem;
}

.nav-logo span {
  color: var(--yellow);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-menu a {
  color: white;
  font-weight: 700;
  padding: 11px 14px;
  border-radius: 999px;
  transition: background 0.25s ease, transform 0.25s ease;
}

.nav-menu a:hover {
  background: rgba(255, 255, 255, 0.16);
  transform: translateY(-1px);
}

.nav-cta {
  background: linear-gradient(135deg, var(--secondary), var(--pink));
  box-shadow: 0 10px 22px rgba(239, 71, 111, 0.32);
}

.nav-toggle {
  display: none;
  width: 46px;
  height: 42px;
  border: 0;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.16);
  cursor: pointer;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
}

.nav-toggle span {
  width: 24px;
  height: 3px;
  background: white;
  border-radius: 999px;
  transition: all 0.25s ease;
}

.nav-toggle.active span:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

/* Hero */

.hero {
  min-height: 560px;
  position: relative;
  display: flex;
  align-items: center;
  background:
    linear-gradient(135deg, rgba(6, 36, 92, 0.92), rgba(21, 62, 144, 0.78)),
    url("assets/hero.jpg");
  background-size: cover;
  background-position: center;
  color: white;
  overflow: hidden;
}

.hero::before,
.hero::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  opacity: 0.75;
  filter: blur(2px);
}

.hero::before {
  width: 320px;
  height: 320px;
  background: rgba(255, 209, 102, 0.22);
  top: -90px;
  right: -80px;
}

.hero::after {
  width: 260px;
  height: 260px;
  background: rgba(0, 180, 216, 0.25);
  bottom: -90px;
  left: -60px;
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 90px 0;
}

.hero-kicker {
  display: inline-block;
  background: rgba(255, 255, 255, 0.16);
  border: 1px solid rgba(255, 255, 255, 0.24);
  padding: 10px 18px;
  border-radius: 999px;
  font-weight: 800;
  margin-bottom: 22px;
}

.hero h1 {
  font-size: clamp(3.2rem, 9vw, 7.5rem);
  line-height: 0.95;
  font-weight: 900;
  letter-spacing: -4px;
  text-shadow: 0 12px 28px rgba(0, 0, 0, 0.22);
}

.hero-lead {
  max-width: 900px;
  margin: 26px auto 0;
  font-size: clamp(1.25rem, 3vw, 2.15rem);
  font-weight: 900;
}

.hero-sublead {
  margin-top: 16px;
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: #e9f7ff;
  font-weight: 700;
}

.hero-actions {
  display: flex;
  justify-content: center;
  gap: 15px;
  flex-wrap: wrap;
  margin-top: 32px;
}

/* Buttons */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 13px 24px;
  border-radius: 999px;
  font-weight: 900;
  border: 0;
  cursor: pointer;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  background: linear-gradient(135deg, var(--secondary), var(--pink));
  color: white;
  box-shadow: 0 12px 30px rgba(239, 71, 111, 0.35);
}

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

.btn-light {
  background: white;
  color: var(--primary-dark);
  margin-top: 22px;
}

/* Sections */

.section {
  padding: 82px 0;
}

.section-heading {
  text-align: center;
  max-width: 820px;
  margin: 0 auto 42px;
}

.section-heading.light {
  color: white;
}

.eyebrow {
  text-transform: uppercase;
  color: var(--secondary);
  letter-spacing: 2px;
  font-weight: 900;
  font-size: 0.8rem;
  margin-bottom: 10px;
}

.section-heading h2 {
  font-size: clamp(2rem, 4vw, 3.25rem);
  line-height: 1.1;
  color: var(--primary-dark);
  margin-bottom: 15px;
}

.section-heading.light h2 {
  color: white;
}

.section-heading p {
  color: var(--muted);
  font-size: 1.05rem;
}

.section-heading.light p {
  color: rgba(255, 255, 255, 0.88);
}

/* Cards */

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.info-card,
.instructor-card,
.contact-card,
.map-card,
.week-panel {
  background: white;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.info-card {
  padding: 30px;
  border-top: 8px solid var(--accent);
}

.info-card:nth-child(2) {
  border-top-color: var(--secondary);
}

.highlight-card {
  border-top-color: var(--green);
  background:
    radial-gradient(circle at top right, rgba(6, 214, 160, 0.18), transparent 42%),
    white;
}

.info-card h3 {
  color: var(--primary-dark);
  font-size: 1.35rem;
  margin-bottom: 16px;
}

.check-list {
  list-style: none;
}

.check-list li {
  position: relative;
  padding-left: 30px;
  margin-bottom: 10px;
  color: var(--muted);
}

.check-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  top: 0;
  color: var(--green);
  font-weight: 900;
}

.metric-row {
  display: flex;
  gap: 16px;
  margin-top: 24px;
  flex-wrap: wrap;
}

.metric-row span {
  flex: 1;
  min-width: 120px;
  background: var(--light);
  border-radius: 18px;
  padding: 16px;
  text-align: center;
  color: var(--primary-dark);
  font-weight: 800;
}

.metric-row strong {
  display: block;
  font-size: 2rem;
}

/* Schedule */

.schedule {
  background:
    radial-gradient(circle at top left, rgba(255, 122, 24, 0.12), transparent 35%),
    radial-gradient(circle at bottom right, rgba(123, 44, 191, 0.12), transparent 35%),
    #eef5ff;
}

.tabs {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 26px;
}

.tab-button {
  border: 0;
  padding: 13px 22px;
  border-radius: 999px;
  background: white;
  color: var(--primary-dark);
  font-weight: 900;
  box-shadow: 0 10px 24px rgba(21, 62, 144, 0.12);
  cursor: pointer;
}

.tab-button.active {
  color: white;
  background: linear-gradient(135deg, var(--primary), var(--purple));
}

.week-panel {
  padding: 34px;
  display: grid;
  grid-template-columns: 1.3fr 0.7fr;
  gap: 30px;
  align-items: start;
}

.week-panel[hidden] {
  display: none;
}

.week-date {
  display: inline-block;
  background: rgba(255, 122, 24, 0.12);
  color: var(--secondary);
  font-weight: 900;
  padding: 7px 13px;
  border-radius: 999px;
  margin-bottom: 12px;
}

.week-panel h3 {
  font-size: clamp(1.5rem, 3vw, 2.3rem);
  color: var(--primary-dark);
  margin-bottom: 16px;
}

.week-panel ul {
  padding-left: 20px;
  color: var(--muted);
}

.week-panel li {
  margin-bottom: 10px;
}

.week-instructors {
  background: var(--light);
  border-radius: 20px;
  padding: 20px;
}

.week-instructors > span {
  display: block;
  font-weight: 900;
  color: var(--primary-dark);
  margin-bottom: 16px;
}

.week-instructor-list {
  display: grid;
  gap: 14px;
}

.week-instructor {
  display: flex;
  align-items: center;
  gap: 12px;
  background: white;
  padding: 10px;
  border-radius: 16px;
}

.week-instructor img {
  width: 54px;
  height: 54px;
  border-radius: 50%;
  object-fit: cover;
}

.week-instructor-name {
  font-weight: 900;
  color: var(--primary);
}

/* Instructors */

.instructor-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}

.instructor-card {
  padding: 22px;
  text-align: center;
  transition: transform 0.25s ease;
}

.instructor-card:hover {
  transform: translateY(-5px);
}

.instructor-photo {
  width: 128px;
  height: 128px;
  border-radius: 50%;
  object-fit: cover;
  margin: 0 auto 16px;
  border: 5px solid #eaf1ff;
}

.instructor-card h3 {
  font-size: 1.05rem;
  color: var(--primary-dark);
}

.instructor-name-link {
  color: var(--primary-dark);
}

.instructor-name-link:hover {
  color: var(--secondary);
}

.instructor-card p {
  margin-top: 6px;
  color: var(--muted);
  font-size: 0.95rem;
}

/* Registration */

.registration {
  background:
    linear-gradient(135deg, rgba(6, 36, 92, 0.96), rgba(21, 62, 144, 0.9)),
    radial-gradient(circle at top right, rgba(255, 209, 102, 0.22), transparent 35%);
  text-align: center;
}

.form-shell {
  background: white;
  border-radius: 24px;
  padding: 12px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.25);
  overflow: hidden;
}

.form-shell iframe {
  width: 100%;
  height: 950px;
  border: 0;
  display: block;
}

/* Contact */

.contact-grid {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 24px;
}

.contact-card {
  padding: 30px;
}

.contact-card h3 {
  color: var(--primary-dark);
  margin-bottom: 12px;
}

.contact-card p {
  color: var(--muted);
  margin-bottom: 14px;
}

.contact-card a {
  color: var(--primary);
  font-weight: 800;
}

.map-card {
  overflow: hidden;
  min-height: 340px;
}

.map-card iframe {
  width: 100%;
  height: 100%;
  border: 0;
  min-height: 340px;
}

/* Footer */

.site-footer {
  background: #071b42;
  color: white;
  padding: 28px 0;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  flex-wrap: wrap;
  text-align: center;
}

.footer-inner p {
  font-size: 0.95rem;
}

.social-links {
  display: flex;
  gap: 10px;
}

.social-links a {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.12);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  transition: background 0.25s ease;
}

.social-links a:hover {
  background: var(--secondary);
}

/* Animation */

.section-reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.section-reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Responsive */

@media (max-width: 992px) {
  .header-grid {
    grid-template-columns: 120px 1fr 120px;
    gap: 12px;
  }

  .header-logo {
    width: 110px;
    height: 74px;
  }

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

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

@media (max-width: 768px) {
  .site-header {
    padding: 12px 0;
  }

  .header-grid {
    grid-template-columns: 76px 1fr 76px;
    gap: 8px;
  }

  .header-logo {
    width: 70px;
    height: 58px;
  }

  .mantra-line {
    font-size: 0.78rem;
    line-height: 1.25;
  }

  .school-name {
    font-size: 0.8rem;
    margin-top: 4px;
  }

  .college-name {
    font-size: 0.92rem;
    margin-top: 1px;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-menu {
    position: absolute;
    top: 68px;
    left: 0;
    right: 0;
    width: 100%;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 12px;
    background: linear-gradient(180deg, var(--primary-dark), var(--primary));
    border-radius: 0 0 20px 20px;
    box-shadow: 0 20px 35px rgba(0, 0, 0, 0.22);
    z-index: 9999;
  }

  .nav-menu.open {
    display: flex;
  }

  .nav-menu a {
    display: block;
    width: 100%;
    text-align: left;
    padding: 14px 16px;
    border-radius: 12px;
  }

  .nav-cta {
    text-align: center !important;
    margin-top: 8px;
  }

  .hero {
    min-height: 500px;
  }

  .hero h1 {
    letter-spacing: -2px;
  }

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

  .btn {
    width: min(100%, 320px);
  }

  .section {
    padding: 62px 0;
  }

  .feature-grid,
  .instructor-grid {
    grid-template-columns: 1fr;
  }

  .tabs {
    justify-content: flex-start;
    overflow-x: auto;
    padding-bottom: 6px;
  }

  .tab-button {
    flex: 0 0 auto;
  }

  .week-panel {
    padding: 24px;
  }

  .form-shell iframe {
    height: 850px;
  }

  .footer-inner {
    flex-direction: column;
  }
}

@media (max-width: 480px) {
  .container {
    width: min(94%, var(--max-width));
  }

  .header-grid {
    grid-template-columns: 58px 1fr 58px;
  }

  .header-logo {
    width: 54px;
    height: 46px;
  }

  .mantra-line {
    font-size: 0.66rem;
  }

  .school-name {
    font-size: 0.69rem;
  }

  .college-name {
    font-size: 0.78rem;
  }

  .nav-inner {
    min-height: 62px;
  }

  .nav-menu {
    top: 62px;
  }

  .nav-logo {
    font-size: 1.08rem;
  }

  .hero-kicker {
    font-size: 0.85rem;
  }

  .hero-lead {
    font-size: 1.22rem;
  }

  .info-card,
  .contact-card {
    padding: 22px;
  }

  .form-shell iframe {
    height: 780px;
  }
}