:root {
  --bg: #05060a;
  --bg-alt: #0b0d13;
  --card-bg: #111320;
  --accent: #2fbf71;
  --accent-soft: rgba(47, 191, 113, 0.1);
  --text: #f7f7fb;
  --muted: #9ea3b5;
  --border: #1f2233;
  --danger: #ff6b6b;
  --radius-lg: 18px;
  --radius-xl: 26px;
  --shadow-soft: 0 18px 45px rgba(0, 0, 0, 0.55);
  --max-width: 1100px;
  --font-main: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

/* Light theme overrides */
body[data-theme="light"] {
  --bg: #f5f7fb;
  --bg-alt: #ffffff;
  --card-bg: #ffffff;
  --text: #111827;
  --muted: #4b5563;
  --border: #e5e7eb;
  --shadow-soft: 0 10px 30px rgba(15, 23, 42, 0.15);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  font-family: var(--font-main);
  background: radial-gradient(circle at top, #151829 0, #05060a 55%);
  color: var(--text);
}

body[data-theme="light"] {
  background: radial-gradient(circle at top, #e5e7eb 0, #f5f7fb 55%);
}

/* Layout helpers */

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section {
  padding: 4rem 0;
}

.section-alt {
  background: linear-gradient(to bottom, rgba(17, 19, 32, 0.9), #05060a);
}

body[data-theme="light"] .section-alt {
  background: linear-gradient(to bottom, #f9fafb, #e5e7eb);
}

/* Header */

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(16px);
  background: linear-gradient(to bottom, rgba(5, 6, 10, 0.96), rgba(5, 6, 10, 0.75));
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

body[data-theme="light"] .site-header {
  background: rgba(249, 250, 251, 0.92);
  border-bottom-color: #e5e7eb;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.7rem 0;
  gap: 0.75rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 600;
  letter-spacing: 0.03em;
}

.logo-mark {
  width: 32px;
  height: 32px;
  border-radius: 999px;
  background: radial-gradient(circle at 30% 20%, #2fbf71, #1c8c4e);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  color: #05060a;
}

.logo-text {
  font-size: 0.95rem;
  color: #f8fafc;
}

body[data-theme="light"] .logo-text {
  color: #111827;
}

.main-nav {
  display: flex;
  gap: 0.75rem;
  font-size: 0.9rem;
  align-items: center;
}

.main-nav a {
  color: var(--muted);
  text-decoration: none;
  padding: 0.35rem 0.6rem;
  border-radius: 999px;
  transition: color 0.15s ease, background-color 0.15s ease;
  white-space: nowrap;
}

.main-nav a:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.05);
}

body[data-theme="light"] .main-nav a:hover {
  background: rgba(148, 163, 184, 0.2);
}

/* Nav controls */

.header-controls {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.theme-toggle,
.nav-toggle {
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.5);
  background: rgba(15, 23, 42, 0.6);
  color: #e5e7eb;
  padding: 0.3rem 0.6rem;
  font-size: 0.85rem;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

body[data-theme="light"] .theme-toggle,
body[data-theme="light"] .nav-toggle {
  background: #ffffff;
  color: #111827;
  border-color: #d1d5db;
}

.nav-toggle {
  display: none;
}

/* Hero */

.hero {
  padding: 3.2rem 0 3.5rem;
}

.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
  gap: 2.5rem;
  align-items: center;
}

.hero-text h1 {
  font-size: clamp(2.1rem, 3vw, 2.6rem);
  margin-bottom: 0.7rem;
}

.hero-subtitle {
  color: var(--muted);
  font-size: 0.98rem;
  line-height: 1.6;
  max-width: 36rem;
}

.hero-bullets {
  list-style: none;
  padding: 0;
  margin: 1.3rem 0 1.8rem;
  color: var(--muted);
  font-size: 0.92rem;
}

.hero-bullets li {
  margin-bottom: 0.4rem;
  padding-left: 1.2rem;
  position: relative;
}

.hero-bullets li::before {
  content: "•";
  position: absolute;
  left: 0;
  top: 0;
  color: var(--accent);
}

.hero-note {
  font-size: 0.82rem;
  color: var(--muted);
  margin-top: 0.8rem;
}

.hero-image img {
  width: 100%;
  max-width: 420px;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-soft);
  border: 1px solid rgba(255, 255, 255, 0.04);
  display: block;
}

body[data-theme="light"] .hero-image img {
  border-color: #e5e7eb;
}

/* Buttons */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  padding: 0.7rem 1.5rem;
  font-size: 0.92rem;
  font-weight: 600;
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: transform 0.12s ease, box-shadow 0.12s ease, background 0.12s ease;
}

.btn-primary {
  background: linear-gradient(135deg, #2fbf71, #23a45e);
  color: #05060a;
  box-shadow: 0 12px 30px rgba(27, 201, 109, 0.28);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 18px 38px rgba(27, 201, 109, 0.33);
}

.btn-full {
  width: 100%;
}

/* Cards, grids */

.two-column {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
  gap: 2rem;
  align-items: flex-start;
}

.card {
  background: radial-gradient(circle at top, #171a2a, #0a0c17);
  border-radius: var(--radius-lg);
  padding: 1.4rem 1.4rem 1.6rem;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-soft);
}

body[data-theme="light"] .card {
  background: #ffffff;
}

.card h3 {
  margin-top: 0;
  margin-bottom: 0.8rem;
}

.highlight-card {
  border-color: rgba(47, 191, 113, 0.5);
  box-shadow: 0 18px 45px rgba(21, 81, 50, 0.7);
}

/* Text helpers */

h2 {
  font-size: 1.5rem;
  margin-top: 0;
  margin-bottom: 0.8rem;
}

p {
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--muted);
}

.checklist {
  list-style: none;
  padding: 0;
  margin: 1rem 0 0;
  font-size: 0.93rem;
  color: var(--text);
}

.checklist li {
  position: relative;
  padding-left: 1.4rem;
  margin-bottom: 0.45rem;
}

.checklist li::before {
  content: "✔";
  position: absolute;
  left: 0;
  top: 0.05rem;
  font-size: 0.78rem;
  color: var(--accent);
}

.simple-list {
  list-style: none;
  padding: 0;
  margin: 0;
  font-size: 0.9rem;
  color: var(--muted);
}

.simple-list li {
  margin-bottom: 0.35rem;
}

/* Steps */

.steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.4rem;
  margin-top: 1.2rem;
}

.step-card {
  position: relative;
  padding: 1.3rem 1.2rem 1.4rem;
  border-radius: var(--radius-lg);
  background: rgba(10, 12, 23, 0.95);
  border: 1px solid var(--border);
}

body[data-theme="light"] .step-card {
  background: #ffffff;
}

.step-number {
  position: absolute;
  top: 0.9rem;
  right: 1rem;
  font-size: 0.8rem;
  color: var(--muted);
  opacity: 0.7;
}

/* Contact */

.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
  gap: 2rem;
  align-items: flex-start;
}

.contact-details a {
  color: var(--accent);
  text-decoration: none;
}

.contact-details a:hover {
  text-decoration: underline;
}

.contact-form {
  background: #05060a;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  padding: 1.4rem 1.4rem 1.5rem;
  box-shadow: var(--shadow-soft);
}

body[data-theme="light"] .contact-form {
  background: #ffffff;
}

.form-row {
  margin-bottom: 0.85rem;
}

.form-row label {
  display: block;
  font-size: 0.8rem;
  margin-bottom: 0.35rem;
  color: var(--muted);
}

.form-row input,
.form-row textarea {
  width: 100%;
  padding: 0.6rem 0.7rem;
  border-radius: 10px;
  border: 1px solid #222538;
  background: #05060a;
  color: var(--text);
  font-size: 0.9rem;
}

body[data-theme="light"] .form-row input,
body[data-theme="light"] .form-row textarea {
  background: #ffffff;
  border-color: #d1d5db;
}

.form-row input:focus,
.form-row textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 1px rgba(47, 191, 113, 0.4);
}

.form-note {
  margin-top: 0.6rem;
  font-size: 0.8rem;
  color: var(--muted);
}

/* Schedule section */

.schedule-section iframe {
  width: 100%;
  min-height: 460px;
  border: none;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
}

/* Footer */

.site-footer {
  padding: 1.4rem 0 1.7rem;
  border-top: 1px solid rgba(255, 255, 255, 0.04);
  background: #05060a;
}

body[data-theme="light"] .site-footer {
  background: #f9fafb;
  border-top-color: #e5e7eb;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  color: var(--muted);
  gap: 0.75rem;
  flex-wrap: wrap;
}

.footer-links a {
  color: var(--muted);
  text-decoration: none;
}

.footer-links a:hover {
  color: var(--accent);
}

/* Responsive */

@media (max-width: 900px) {
  .hero-inner,
  .two-column,
  .contact-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .hero {
    padding-top: 2.4rem;
  }

  .hero-image {
    order: -1;
    text-align: center;
  }

  .hero-image img {
    max-width: 340px;
    margin: 0 auto;
  }

  .main-nav {
    display: none;
    position: absolute;
    top: 100%;
    right: 0;
    left: 0;
    padding: 0.75rem 1.5rem 1rem;
    background: #05060a;
    flex-direction: column;
  }

  body[data-theme="light"] .main-nav {
    background: #f9fafb;
  }

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

  .nav-toggle {
    display: inline-flex;
  }

  .site-header {
    position: sticky;
  }
}

@media (max-width: 600px) {
  .section {
    padding: 3rem 0;
  }

  .header-inner {
    padding: 0.6rem 0;
  }

  .logo-text {
    font-size: 0.9rem;
  }
}

.video-wrapper iframe {
  width: 100%;
  height: 100%;
  border-radius: 12px;
}