:root {
  --bg: #060b12;
  --bg-2: #0b1420;
  --fg: #e7f0ff;
  --muted: #a9bedb;
  --accent: #5ee3ff;
  --cta: #5ee3ff;
  --cta-ink: #001018;
  --card: #0e1a29cc;
  --border: #26364c;
}

* {
  box-sizing: border-box;
}
html {
  height: 100%;
}
body {
  min-height: 100%;
  display: flex;
  flex-direction: column;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Inter,
    "Helvetica Neue", Arial, "Noto Sans", "Apple Color Emoji", "Segoe UI Emoji",
    "Segoe UI Symbol", sans-serif;
  color: var(--fg);
  background: radial-gradient(1200px 800px at 50% -10%, #0d2235, var(--bg))
    fixed;
  line-height: 1.6;
  overflow-x: hidden;
  overflow-y: auto;
  overscroll-behavior-y: none;
}

#tunnel-canvas {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  z-index: -1;
  display: block;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  padding: 10px 16px;
  background: linear-gradient(
    to bottom,
    rgba(6, 11, 18, 0.9),
    rgba(6, 11, 18, 0.4) 60%,
    transparent
  );
  backdrop-filter: blur(6px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}
.header-inner {
  max-width: min(1200px, 92vw);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.brand {
  display: inline-flex;
  gap: 10px;
  align-items: center;
  color: var(--fg);
  text-decoration: none;
  letter-spacing: 0.2px;
  font-weight: 650;
}
.brand img {
  filter: drop-shadow(0 2px 6px rgba(94, 227, 255, 0.25));
}

/* Compact desktop nav */
.nav {
  display: flex;
  gap: clamp(10px, 2vw, 18px);
  align-items: center;
  padding: 4px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.07);
  border-radius: 12px;
}
.nav a {
  color: var(--muted);
  text-decoration: none;
  font-weight: 550;
  padding: 8px 10px;
  border-radius: 8px;
}
.nav a:hover {
  color: var(--fg);
  background: rgba(255, 255, 255, 0.05);
}
.nav .cta {
  color: var(--cta-ink);
  background: var(--cta);
  padding: 10px 12px;
  border-radius: 10px;
}

/* Mobile nav toggle */
.nav-toggle {
  display: none;
  appearance: none;
  border: 1px solid rgba(255, 255, 255, 0.15);
  background: rgba(255, 255, 255, 0.06);
  color: var(--fg);
  border-radius: 10px;
  padding: 8px 10px;
}
.nav-icon {
  display: inline-block;
  width: 18px;
  height: 2px;
  background: currentColor;
  position: relative;
}
.nav-icon::before,
.nav-icon::after {
  content: "";
  position: absolute;
  left: 0;
  width: 18px;
  height: 2px;
  background: currentColor;
}
.nav-icon::before {
  top: -6px;
}
.nav-icon::after {
  top: 6px;
}

/* Responsive behavior */
@media (max-width: 800px) {
  .nav-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }
  .nav {
    position: fixed;
    top: 56px;
    right: 12px;
    left: 12px;
    display: none;
    flex-direction: column;
    gap: 8px;
    padding: 12px;
    background: rgba(10, 16, 22, 0.95);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 12px;
  }
  .nav.open {
    display: flex;
  }
  .nav a {
    width: 100%;
    text-align: center;
    padding: 12px;
  }
  .nav .cta {
    width: 100%;
  }
}

/* Extra-large screens: keep nav comfortably inset */
@media (min-width: 1300px) {
  .header-inner {
    max-width: 1200px;
  }
}

main {
  display: flex;
  flex-direction: column;
  flex: 1 0 auto;
  min-height: 0;
}

.hero {
  min-height: 100svh;
  display: grid;
  place-items: center;
  padding: 12vh 24px 16vh;
}
.hero-content {
  max-width: 980px;
  text-align: center;
  position: relative;
}
.hero-content::before {
  content: "";
  position: absolute;
  inset: -24px -28px;
  border-radius: 24px;
  background: radial-gradient(
    60% 60% at 50% 40%,
    rgba(6, 11, 18, 0.55),
    rgba(6, 11, 18, 0.1)
  );
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.25) inset;
  filter: blur(6px);
  z-index: -1;
}
.hero h1 {
  font-size: clamp(2.2rem, 4vw + 1rem, 4rem);
  line-height: 1.08;
  margin: 0 0 12px;
}
.accent {
  color: var(--accent);
}
.hero p {
  color: var(--muted);
  font-size: clamp(1rem, 1vw + 0.8rem, 1.25rem);
  margin: 0 auto 22px;
  max-width: 60ch;
}
.hero-ctas {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}
.scroll-cue {
  opacity: 0.7;
  display: inline-flex;
  gap: 6px;
  align-items: center;
  margin-top: 22px;
  color: var(--muted);
}

/* (removed stream pin section and skip link styles) */

/* Anchor offset under sticky header */
.hero,
.panel {
  scroll-margin-top: 72px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  font-weight: 650;
  border-radius: 12px;
  padding: 12px 16px;
  border: 1px solid transparent;
}
.btn.primary {
  background: var(--cta);
  color: var(--cta-ink);
}
.btn.primary:hover {
  filter: brightness(1.05);
}
.btn.ghost {
  border-color: var(--border);
  color: var(--fg);
  background: rgba(255, 255, 255, 0.02);
}
.btn.ghost:hover {
  border-color: var(--muted);
}

.panel {
  position: relative;
  padding: clamp(56px, 8vh, 120px) 20px;
  background: linear-gradient(
    to bottom,
    transparent,
    rgba(14, 26, 41, 0.55),
    transparent
  );
}
.panel:nth-of-type(odd) {
  background: linear-gradient(
    to bottom,
    transparent,
    rgba(14, 26, 41, 0.35),
    transparent
  );
}
/* Contact: balanced spacing, no flex-grow */
.panel.contact {
  background: linear-gradient(
    to bottom,
    rgba(14, 26, 41, 0.55),
    rgba(14, 26, 41, 0.1)
  );
  display: block;
  flex: 0 0 auto;
  padding: clamp(32px, 6vh, 64px) 20px 28px;
  text-align: center;
}
.container {
  max-width: 1100px;
  margin: 0 auto;
}
.panel h2 {
  font-size: clamp(1.6rem, 2.2vw + 1rem, 2.6rem);
  margin: 0 0 18px;
}
.panel p {
  color: var(--muted);
}

.cards {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
}
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 18px;
  backdrop-filter: blur(4px);
}
.card h3 {
  margin: 0 0 6px;
}

.showcase {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px;
  margin-top: 16px;
}
.showcase-item {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 18px;
}

.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  counter-reset: step;
  margin: 0;
  padding: 0;
}
.steps li {
  list-style: none;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 18px;
  position: relative;
}
.steps li::before {
  counter-increment: step;
  content: counter(step, decimal-leading-zero);
  position: absolute;
  top: 14px;
  right: 14px;
  color: #7fbdd0;
  opacity: 0.5;
  font-weight: 800;
}

/* Contact Form */
.contact-form {
  max-width: 600px;
  margin: 24px auto 0;
  text-align: left;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  margin-bottom: 6px;
  font-weight: 550;
  color: var(--fg);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.02);
  color: var(--fg);
  font-family: inherit;
  font-size: 16px;
  transition: border-color 0.2s ease, background-color 0.2s ease;
}

.form-group select {
  background: rgba(255, 255, 255, 0.02);
  color: var(--fg);
}

.form-group select option {
  background: var(--bg-2);
  color: var(--fg);
  padding: 8px 12px;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
  background: rgba(255, 255, 255, 0.04);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.form-group select {
  cursor: pointer;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--muted);
  opacity: 0.7;
}

/* reCAPTCHA styling */
.g-recaptcha {
  display: flex;
  justify-content: center;
  margin: 8px 0;
}

/* Form submit button */
.contact-form .btn {
  margin-top: 8px;
}

/* Enhanced form elements */
.form-help {
  display: block;
  font-size: 12px;
  color: var(--muted);
  margin-top: 4px;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 2px rgba(94, 227, 255, 0.1);
}

.form-group input:invalid:not(:focus):not(:placeholder-shown),
.form-group textarea:invalid:not(:focus):not(:placeholder-shown) {
  border-color: #ef4444;
}

/* Form submit section layout */
.form-submit-section {
  margin-top: 24px;
  padding-top: 16px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}

.recaptcha-group {
  margin-bottom: 0;
  display: flex;
  justify-content: center;
}

.submit-group {
  margin-bottom: 0;
  width: 100%;
  display: flex;
  justify-content: center;
}

.submit-group .btn {
  min-width: 180px;
  margin-top: 0;
}

@media (min-width: 640px) {
  .form-submit-section {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    gap: 24px;
  }

  .submit-group {
    width: auto;
  }
}

/* Button enhancements */
.btn {
  position: relative;
  overflow: hidden;
  transition: all 0.2s ease;
}

.btn:disabled {
  opacity: 0.7;
  cursor: not-allowed;
}

.btn-spinner {
  animation: spin 1s linear infinite;
}

@keyframes spin {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

/* Form messages */
#form-messages {
  margin-top: 20px;
  min-height: 24px;
}

.message {
  padding: 12px 16px;
  border-radius: 8px;
  margin-bottom: 12px;
  font-size: 14px;
  font-weight: 500;
  border: 1px solid transparent;
}

.message.success {
  background: rgba(16, 185, 129, 0.1);
  color: #10b981;
  border-color: rgba(16, 185, 129, 0.2);
}

.message.error {
  background: rgba(239, 68, 68, 0.1);
  color: #ef4444;
  border-color: rgba(239, 68, 68, 0.2);
}

.message.warning {
  background: rgba(245, 158, 11, 0.1);
  color: #f59e0b;
  border-color: rgba(245, 158, 11, 0.2);
}

/* reCAPTCHA styling */
.g-recaptcha {
  margin: 20px 0;
  display: flex;
  justify-content: center;
}

/* Loading state */
.contact-form.loading .btn {
  pointer-events: none;
}

.contact-form.loading .btn-text {
  opacity: 0.7;
}

.contact-form.loading .btn-spinner {
  display: inline-block;
  margin-left: 8px;
}

/* Responsive enhancements */
@media (max-width: 600px) {
  .contact-form {
    margin-top: 20px;
  }

  .form-group {
    margin-bottom: 16px;
  }

  .g-recaptcha {
    transform: scale(0.85);
    transform-origin: center;
  }
}

.site-footer {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding: 16px 20px;
  color: var(--muted);
  background: linear-gradient(to top, rgba(6, 11, 18, 0.85), transparent);
  flex-shrink: 0;
}
.site-footer .container {
  display: flex;
  justify-content: center;
}
.site-footer p {
  margin: 0;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}