/* ====== HEADER ====== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  z-index: 100;
  transition: background var(--transition-med), box-shadow var(--transition-med);
  background: transparent;
}

.site-header.scrolled {
  background: rgba(11, 12, 16, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 var(--border-subtle);
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.3rem;
  color: var(--accent-cyan);
  letter-spacing: 0.05em;
}

.logo:hover {
  color: var(--text-white);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-links a {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-gray);
  letter-spacing: 0.03em;
  transition: color var(--transition-fast);
}

.nav-links a:hover {
  color: var(--text-white);
}

.nav-cta {
  padding: 8px 20px;
  border: 1px solid var(--accent-cyan);
  border-radius: 4px;
  color: var(--accent-cyan) !important;
  transition: all var(--transition-fast);
}

.nav-cta:hover {
  background: var(--accent-cyan);
  color: var(--bg-primary) !important;
}

.mobile-menu-btn {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 4px;
}

.mobile-menu-btn span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-white);
  transition: all var(--transition-fast);
  border-radius: 1px;
}

.mobile-menu {
  display: none;
  position: fixed;
  top: var(--header-height);
  left: 0;
  right: 0;
  background: var(--bg-primary);
  border-bottom: 1px solid var(--border-subtle);
  z-index: 99;
  padding: 16px 24px;
  flex-direction: column;
  gap: 16px;
  transform: translateY(-110%);
  transition: transform var(--transition-med);
}

.mobile-menu.open {
  transform: translateY(0);
}

.mobile-menu a {
  font-size: 16px;
  font-weight: 500;
  color: var(--text-gray);
  padding: 8px 0;
}

/* ====== HERO ====== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 120px 24px 80px;
  max-width: none;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}

.hero-video {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 100vw;
  height: 56.25vw;
  min-height: 100vh;
  min-width: 177.78vh;
  transform: translate(-50%, -50%);
  pointer-events: none;
  border: 0;
  z-index: 0;
  opacity: 0.4;
}

.hero-bg-overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(180deg, rgba(11,12,16,0.7) 0%, rgba(11,12,16,0.9) 100%);
}

.hero-content {
  position: relative;
  max-width: 780px;
  z-index: 2;
}

.hero-title {
  margin-bottom: 20px;
}

.hero-subtitle {
  font-size: clamp(1rem, 1.8vw, 1.2rem);
  color: var(--text-gray);
  margin-bottom: 40px;
  max-width: 640px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.7;
}

.hero-micro {
  margin-top: 20px;
  font-size: 12px;
  font-family: var(--font-mono);
  color: var(--text-dim);
  letter-spacing: 0.05em;
}

/* ====== BOTTLENECKS ====== */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  padding: 36px 28px;
  transition: all var(--transition-med);
}

.card-bottleneck:hover {
  border-color: rgba(255, 69, 0, 0.3);
  box-shadow: 0 0 30px var(--glow-orange);
}

.card-icon {
  width: 48px;
  height: 48px;
  margin-bottom: 20px;
}

.card-icon svg {
  width: 100%;
  height: 100%;
}

.card h3 {
  margin-bottom: 12px;
}

.card p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-gray);
}

/* ====== SOLUTION ====== */
.solution {
  display: flex;
  align-items: center;
  gap: 80px;
  max-width: 1100px;
}

.solution-content {
  flex: 1;
}

.solution-content h2 {
  margin-bottom: 20px;
}

.solution-content > p {
  font-size: 1.1rem;
  line-height: 1.8;
  margin-bottom: 32px;
}

.temp-highlight {
  color: var(--accent-cyan);
  font-family: var(--font-mono);
  font-weight: 600;
}

.benefits-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.benefits-list li {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  font-size: 15px;
  line-height: 1.6;
}

.benefit-icon {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-cyan);
  font-size: 14px;
  border: 1px solid var(--border-cyan);
  border-radius: 50%;
}

.benefit-label {
  color: var(--text-white);
  font-weight: 500;
}

.solution-temp {
  flex-shrink: 0;
  text-align: center;
}

.temp-number {
  display: block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(4rem, 10vw, 7rem);
  color: var(--accent-cyan);
  line-height: 1;
  animation: temp-pulse 3s ease-in-out infinite;
  text-shadow: 0 0 40px var(--glow-cyan);
}

.temp-unit {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(1.5rem, 3vw, 2rem);
  color: var(--accent-cyan);
  opacity: 0.7;
  margin-top: 4px;
}

.solution-sat2 {
  display: block;
  width: 420px;
  margin: 0 auto 24px;
  border-radius: 4px;
  opacity: 0.6;
}

@keyframes temp-pulse {
  0%, 100% { opacity: 1; text-shadow: 0 0 40px var(--glow-cyan); }
  50% { opacity: 0.85; text-shadow: 0 0 60px var(--glow-cyan), 0 0 90px rgba(0, 240, 255, 0.1); }
}

/* ====== TRIANGLE ====== */
.triangle-grid {
  display: grid;
  grid-template-columns: 1fr auto;
  grid-template-rows: auto 1fr;
  gap: 40px;
  align-items: stretch;
}

.triangle-grid-left {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.triangle-top-row {
  display: flex;
  align-items: center;
  gap: 32px;
}

.triangle-grid-right {
  grid-row: 1 / -1;
  display: flex;
  align-items: stretch;
  justify-content: center;
}

.triangle-canvas-wrapper {
  width: 580px;
  height: auto;
  flex-shrink: 0;
}

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

.triangle-draggable {
  cursor: grab;
  transition: fill var(--transition-fast);
  filter: drop-shadow(0 0 6px rgba(0, 240, 255, 0.3)) drop-shadow(0 0 20px rgba(0, 240, 255, 0.15));
}

.triangle-draggable:active {
  cursor: grabbing;
  fill: var(--text-white);
  filter: drop-shadow(0 0 8px rgba(0, 240, 255, 0.5)) drop-shadow(0 0 30px rgba(0, 240, 255, 0.25));
}

.triangle-mini-dot {
  opacity: 0.5;
}

.triangle-metrics {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.metric {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.metric-label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-dim);
  font-family: var(--font-mono);
}

.metric-value {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent-cyan);
}

.triangle-sliders {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.slider-group {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 12px;
}

.slider-group label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-dim);
  font-family: var(--font-mono);
  white-space: nowrap;
  min-width: 90px;
}

.slider-value {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  color: var(--accent-cyan);
  min-width: 60px;
  text-align: right;
}

.range-slider {
  -webkit-appearance: none;
  appearance: none;
  flex: 1;
  height: 3px;
  background: var(--border-subtle);
  border-radius: 2px;
  outline: none;
}

.range-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--accent-cyan);
  cursor: pointer;
  border: 2px solid var(--bg-primary);
}

.range-slider::-moz-range-thumb {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--accent-cyan);
  cursor: pointer;
  border: 2px solid var(--bg-primary);
}

.triangle-satel-wrapper {
  width: auto;
  height: 100%;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.triangle-satel {
  display: block;
  height: 100%;
  width: auto;
  max-width: 100%;
  object-fit: contain;
  opacity: 0.3;
}

/* ====== BUSINESS / ROADMAP ====== */
.business-models {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 80px;
}

.model-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  padding: 32px 24px;
  text-align: center;
  transition: border-color var(--transition-med);
}

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

.model-icon {
  width: 48px;
  height: 48px;
  margin: 0 auto 16px;
}

.model-icon svg {
  width: 100%;
  height: 100%;
}

.model-card h3 {
  margin-bottom: 8px;
  font-size: 1.1rem;
}

.model-card p {
  font-size: 14px;
  color: var(--text-gray);
}

.roadmap h3 {
  text-align: center;
  margin-bottom: 40px;
  color: var(--text-gray);
  font-weight: 500;
}

.timeline {
  position: relative;
  display: flex;
  justify-content: space-between;
  padding-top: 20px;
}

.timeline-track {
  position: absolute;
  top: 28px;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--border-subtle);
}

.timeline-item {
  position: relative;
  flex: 1;
  text-align: center;
  padding: 0 12px;
}

.timeline-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--bg-secondary);
  border: 2px solid var(--border-subtle);
  margin: 0 auto 16px;
  position: relative;
  z-index: 1;
  transition: all var(--transition-med);
}

.timeline-current .timeline-dot {
  border-color: var(--accent-cyan);
  box-shadow: 0 0 12px var(--glow-cyan);
}

.timeline-year {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 14px;
  color: var(--text-white);
  margin-bottom: 8px;
}

.timeline-text {
  font-size: 13px;
  line-height: 1.6;
  color: var(--text-gray);
  max-width: 200px;
  margin: 0 auto;
}

/* ====== FOUNDER ====== */
.founder-content {
  display: flex;
  gap: 60px;
  align-items: flex-start;
}

.founder-photo-wrapper {
  flex-shrink: 0;
  width: 320px;
}

.founder-photo {
  width: 100%;
  aspect-ratio: 1;
  border-radius: 4px;
  object-fit: cover;
  border: 1px solid var(--border-subtle);
  filter: grayscale(30%) contrast(1.1);
}

.founder-info {
  flex: 1;
}

.founder-info > p {
  font-size: 1.05rem;
  line-height: 1.8;
  margin-bottom: 32px;
}

.founder-info strong {
  color: var(--text-white);
}

.publications-heading {
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-dim);
  margin-bottom: 16px;
  font-family: var(--font-mono);
}

.publications ul {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.pub-link {
  font-size: 14px;
  line-height: 1.6;
  color: var(--text-gray);
  transition: color var(--transition-fast);
  display: inline-block;
}

.pub-link:hover {
  color: var(--accent-cyan);
}

/* ====== CTA SECTION ====== */
.cta-section {
  text-align: center;
  max-width: 640px;
}

.cta-content h2 {
  margin-bottom: 16px;
}

.cta-content > p {
  margin-bottom: 40px;
  color: var(--text-gray);
}

.cta-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
  text-align: left;
}

.form-group input,
.form-group textarea {
  padding: 14px 16px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: 4px;
  transition: border-color var(--transition-fast);
  color: var(--text-white);
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--accent-cyan);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-dim);
}

.form-group textarea {
  resize: vertical;
  min-height: 80px;
}

.cta-form .btn {
  width: 100%;
  margin-top: 8px;
}

.form-error {
  color: var(--accent-orange);
  font-size: 13px;
  margin-top: 4px;
  display: none;
}

.form-error.visible {
  display: block;
}

.input-error {
  border-color: var(--accent-orange) !important;
}

/* ====== FOOTER ====== */
.site-footer {
  border-top: 1px solid var(--border-subtle);
  padding: 32px 24px;
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 32px;
  flex-wrap: wrap;
  font-size: 13px;
  color: var(--text-dim);
}

.footer-link {
  color: var(--text-dim);
  transition: color var(--transition-fast);
}

.footer-link:hover {
  color: var(--accent-cyan);
}

/* ====== MODAL ====== */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 200;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.modal-overlay.open {
  display: flex;
}

.modal {
  background: var(--bg-secondary);
  border: 1px solid var(--border-cyan);
  border-radius: 8px;
  padding: 48px;
  max-width: 480px;
  width: 100%;
  text-align: center;
  position: relative;
}

.modal h3 {
  font-size: 1.5rem;
  margin-bottom: 16px;
  color: var(--accent-cyan);
}

.modal p {
  font-size: 15px;
  line-height: 1.7;
}

.modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  color: var(--text-gray);
  border-radius: 50%;
  transition: all var(--transition-fast);
}

.modal-close:hover {
  color: var(--text-white);
  background: rgba(255, 255, 255, 0.05);
}

.modal-policy {
  max-width: 600px;
  text-align: left;
}

.policy-text p {
  margin-bottom: 12px;
  font-size: 14px;
  line-height: 1.6;
}

.policy-text strong {
  color: var(--text-white);
}

.policy-text a {
  color: var(--accent-cyan);
}

.policy-muted {
  color: var(--text-dim);
  font-size: 12px !important;
  margin-top: 16px;
}

/* ====== SCROLL ANIMATIONS ====== */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}

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