/* ============================================================
   NEURAL//CORE — Cyberpunk AI Showcase
   Amber/Orange on Deep Black Retro Terminal Theme
   ============================================================ */

/* ── CSS Custom Properties ──────────────────────────── */
:root {
  --amber: #ff9500;
  --amber-light: #ffb347;
  --amber-dark: #ff6600;
  --amber-glow: rgba(255, 149, 0, 0.6);
  --amber-dim: rgba(255, 149, 0, 0.15);
  --amber-faint: rgba(255, 149, 0, 0.05);
  --bg-deep: #0a0a0a;
  --bg-dark: #0d0d0d;
  --bg-card: #111111;
  --bg-card-hover: #1a1a1a;
  --text-primary: #ffb347;
  --text-secondary: #cc8800;
  --text-dim: #665500;
  --border-color: rgba(255, 149, 0, 0.2);
  --border-glow: rgba(255, 149, 0, 0.4);
  --font-mono: 'Courier New', 'Lucida Console', 'Consolas', monospace;
  --screen-height: 100dvh;
  --nav-width: 40px;
}

/* ── Reset & Base ───────────────────────────────────── */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-snap-type: y proximity;
  overflow-y: scroll;
  scrollbar-width: thin;
  scrollbar-color: var(--amber-dark) var(--bg-deep);
}

html::-webkit-scrollbar {
  width: 6px;
}

html::-webkit-scrollbar-track {
  background: var(--bg-deep);
}

html::-webkit-scrollbar-thumb {
  background: var(--amber-dark);
  border-radius: 3px;
}

body {
  font-family: var(--font-mono);
  background: var(--bg-deep);
  color: var(--text-primary);
  overflow-x: hidden;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ── CRT Scanline Overlay ───────────────────────────── */
.crt-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 9999;
}

.scanlines {
  width: 100%;
  height: 100%;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    rgba(0, 0, 0, 0.15) 2px,
    rgba(0, 0, 0, 0.15) 4px
  );
  animation: scanlineShift 8s linear infinite;
}

.flicker {
  width: 100%;
  height: 100%;
  background: rgba(255, 149, 0, 0.01);
  animation: flicker 0.15s infinite;
}

@keyframes scanlineShift {
  0% { transform: translateY(0); }
  100% { transform: translateY(4px); }
}

@keyframes flicker {
  0% { opacity: 0.97; }
  50% { opacity: 1; }
  100% { opacity: 0.98; }
}

/* ── Particle Canvas ────────────────────────────────── */
#particle-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
}

/* ── Screen Sections ────────────────────────────────── */
.screen {
  min-height: var(--screen-height);
  scroll-snap-align: start;
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  padding-left: calc(var(--nav-width) + 2rem);
}

.screen-content {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
}

/* ── Side Navigation ────────────────────────────────── */
.side-nav {
  position: fixed;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 100;
}

.side-nav ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.nav-dot {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  text-decoration: none;
  color: var(--text-dim);
  transition: all 0.3s ease;
  padding: 4px 0;
}

.nav-dot .dot {
  width: 10px;
  height: 10px;
  border: 1px solid var(--text-dim);
  border-radius: 50%;
  display: block;
  transition: all 0.3s ease;
  margin-left: 8px;
}

.nav-dot .nav-label {
  font-size: 0.6rem;
  letter-spacing: 0.1em;
  opacity: 0;
  transform: translateX(10px);
  transition: all 0.3s ease;
  white-space: nowrap;
}

.nav-dot:hover .nav-label {
  opacity: 1;
  transform: translateX(0);
}

.nav-dot.active {
  color: var(--amber);
}

.nav-dot.active .dot {
  background: var(--amber);
  border-color: var(--amber);
  box-shadow: 0 0 8px var(--amber-glow), 0 0 16px var(--amber-dim);
}

/* ── Arrow Navigation ───────────────────────────────── */
.arrow-nav {
  position: fixed;
  bottom: 60px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 100;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.arrow-btn {
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--amber);
  width: 36px;
  height: 28px;
  cursor: pointer;
  font-size: 0.7rem;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}

.arrow-btn:hover {
  background: var(--amber-dim);
  border-color: var(--amber);
  box-shadow: 0 0 8px var(--amber-glow);
}

.arrow-btn:not(.active) {
  opacity: 0.3;
  cursor: default;
}

/* ── Section Titles ─────────────────────────────────── */
.section-title {
  text-align: center;
  margin-bottom: 3rem;
}

.section-tag {
  display: block;
  font-size: 0.75rem;
  color: var(--text-dim);
  letter-spacing: 0.3em;
  margin-bottom: 0.5rem;
}

.section-title-text {
  display: block;
  font-size: clamp(1.5rem, 4vw, 2.5rem);
  color: var(--amber);
  text-shadow: 0 0 10px var(--amber-glow), 0 0 40px var(--amber-dim);
  letter-spacing: 0.1em;
}

/* ── Reveal Animations ──────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* ── Glitch Effect ──────────────────────────────────── */
.glitch {
  position: relative;
  display: inline-block;
}

.glitch::before,
.glitch::after {
  content: attr(data-glitch);
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.glitch::before {
  color: var(--amber-light);
  animation: glitchTop 3s infinite linear alternate-reverse;
  clip-path: polygon(0 0, 100% 0, 100% 33%, 0 33%);
}

.glitch::after {
  color: var(--amber-dark);
  animation: glitchBottom 2s infinite linear alternate-reverse;
  clip-path: polygon(0 67%, 100% 67%, 100% 100%, 0 100%);
}

@keyframes glitchTop {
  0% { transform: translate(0); }
  2% { transform: translate(2px, -1px); }
  4% { transform: translate(-2px, 1px); }
  6% { transform: translate(0); }
  100% { transform: translate(0); }
}

@keyframes glitchBottom {
  0% { transform: translate(0); }
  3% { transform: translate(-2px, 1px); }
  6% { transform: translate(2px, -1px); }
  9% { transform: translate(0); }
  100% { transform: translate(0); }
}

/* ── HERO SECTION ───────────────────────────────────── */
.hero-grid {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.hero-line {
  position: absolute;
  background: var(--border-color);
}

.hero-line-top {
  top: 20%;
  left: 10%;
  right: 10%;
  height: 1px;
  animation: neonPulse 3s ease-in-out infinite;
}

.hero-line-bottom {
  bottom: 20%;
  left: 10%;
  right: 10%;
  height: 1px;
  animation: neonPulse 3s ease-in-out infinite 1.5s;
}

.hero-line-left {
  left: 10%;
  top: 20%;
  bottom: 20%;
  width: 1px;
  animation: neonPulse 3s ease-in-out infinite 0.75s;
}

.hero-line-right {
  right: 10%;
  top: 20%;
  bottom: 20%;
  width: 1px;
  animation: neonPulse 3s ease-in-out infinite 2.25s;
}

@keyframes neonPulse {
  0%, 100% { opacity: 0.3; box-shadow: none; }
  50% { opacity: 1; box-shadow: 0 0 8px var(--amber-glow), 0 0 20px var(--amber-dim); }
}

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

.hero-subtitle {
  font-size: 0.85rem;
  color: var(--text-dim);
  letter-spacing: 0.4em;
  margin-bottom: 1.5rem;
  text-transform: uppercase;
}

.hero-title {
  margin-bottom: 2rem;
}

.hero-title-line {
  display: block;
  font-size: clamp(2.5rem, 8vw, 5rem);
  font-weight: 700;
  color: var(--amber);
  text-shadow:
    0 0 10px var(--amber-glow),
    0 0 40px var(--amber-dim),
    0 0 80px rgba(255, 149, 0, 0.1);
  letter-spacing: 0.08em;
  line-height: 1.2;
}

.hero-tagline-wrapper {
  margin-bottom: 2rem;
  min-height: 2.5rem;
}

.hero-tagline {
  font-size: clamp(0.9rem, 2vw, 1.2rem);
  color: var(--amber-light);
  letter-spacing: 0.05em;
}

.typing-text {
  font-size: clamp(0.9rem, 2vw, 1.2rem);
  color: var(--amber-light);
  letter-spacing: 0.05em;
}

.typing-cursor {
  animation: blink 0.8s step-end infinite;
  color: var(--amber);
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

.hero-terminal-bar {
  display: inline-block;
  padding: 0.5rem 1.5rem;
  border: 1px solid var(--border-color);
  border-radius: 2px;
  margin-bottom: 2rem;
  font-size: 0.75rem;
  color: var(--text-secondary);
  background: var(--amber-faint);
}

.terminal-prefix {
  color: var(--amber);
  margin-right: 0.5rem;
}

.terminal-text {
  color: var(--text-secondary);
}

.hero-cta {
  margin-top: 1rem;
}

.neon-btn {
  background: transparent;
  border: 1px solid var(--amber);
  color: var(--amber);
  padding: 0.8rem 2rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  letter-spacing: 0.15em;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: all 0.3s ease;
}

.neon-btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, var(--amber-dim), transparent);
  transition: left 0.5s ease;
}

.neon-btn:hover {
  background: var(--amber-dim);
  box-shadow: 0 0 15px var(--amber-glow), 0 0 30px var(--amber-dim), inset 0 0 15px var(--amber-dim);
  text-shadow: 0 0 5px var(--amber-glow);
}

.neon-btn:hover::before {
  left: 100%;
}

/* ── CAPABILITIES SECTION ───────────────────────────── */
.capabilities-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.capability-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 1.5rem;
  position: relative;
  overflow: hidden;
  transition: all 0.3s ease;
}

.capability-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--amber), transparent);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.capability-card:hover {
  border-color: var(--amber);
  background: var(--bg-card-hover);
  box-shadow: 0 0 20px var(--amber-dim);
  transform: translateY(-2px);
}

.capability-card:hover::before {
  opacity: 1;
}

.card-icon {
  font-size: 1.5rem;
  color: var(--amber);
  margin-bottom: 0.75rem;
  text-shadow: 0 0 10px var(--amber-glow);
}

.card-title {
  font-size: 0.95rem;
  color: var(--amber-light);
  margin-bottom: 0.5rem;
  letter-spacing: 0.05em;
}

.card-desc {
  font-size: 0.75rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 1rem;
}

.card-bar {
  width: 100%;
  height: 4px;
  background: var(--amber-faint);
  border-radius: 2px;
  overflow: hidden;
  margin-bottom: 0.25rem;
}

.card-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--amber-dark), var(--amber));
  border-radius: 2px;
  width: 0;
  transition: width 1.5s ease-out;
  box-shadow: 0 0 8px var(--amber-glow);
}

.card-percent {
  font-size: 0.7rem;
  color: var(--amber);
  text-align: right;
  display: block;
}

/* ── METRICS SECTION ────────────────────────────────── */
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.metric-card {
  text-align: center;
  padding: 1.5rem 1rem;
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  position: relative;
  transition: all 0.3s ease;
}

.metric-card:hover {
  border-color: var(--amber);
  box-shadow: 0 0 15px var(--amber-dim);
}

.metric-card::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 2px;
  background: var(--amber);
  transition: width 0.3s ease;
}

.metric-card:hover::after {
  width: 100%;
}

.metric-value {
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  color: var(--amber);
  text-shadow: 0 0 10px var(--amber-glow);
  margin-bottom: 0.5rem;
  font-weight: 700;
}

.counter {
  /* animated counter value — styled via .metric-value parent */
}

.metric-label {
  font-size: 0.7rem;
  color: var(--amber-light);
  letter-spacing: 0.2em;
  margin-bottom: 0.25rem;
}

.metric-sublabel {
  font-size: 0.6rem;
  color: var(--text-dim);
}

.metrics-log {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 1rem 1.5rem;
  font-size: 0.75rem;
  max-width: 600px;
  margin: 0 auto;
}

.log-line {
  padding: 0.25rem 0;
  color: var(--text-secondary);
  opacity: 0;
  animation: logAppear 0.3s ease forwards;
}

.log-line:nth-child(1) { animation-delay: 0.1s; }
.log-line:nth-child(2) { animation-delay: 0.4s; }
.log-line:nth-child(3) { animation-delay: 0.7s; }
.log-line:nth-child(4) { animation-delay: 1.0s; }
.log-line:nth-child(5) { animation-delay: 1.3s; }

@keyframes logAppear {
  from { opacity: 0; transform: translateX(-10px); }
  to { opacity: 1; transform: translateX(0); }
}

.log-highlight {
  color: var(--amber);
  text-shadow: 0 0 5px var(--amber-glow);
}

/* ── APPLICATIONS SECTION ───────────────────────────── */
.applications-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
}

.app-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 1.25rem;
  transition: all 0.3s ease;
  position: relative;
}

.app-card:hover {
  border-color: var(--amber);
  box-shadow: 0 0 20px var(--amber-dim);
}

.app-card-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
}

.app-status {
  font-size: 0.55rem;
  padding: 2px 6px;
  border: 1px solid var(--amber-dark);
  color: var(--amber-dark);
  letter-spacing: 0.1em;
  flex-shrink: 0;
}

.app-status.active {
  color: var(--amber);
  border-color: var(--amber);
  animation: statusPulse 2s ease-in-out infinite;
}

@keyframes statusPulse {
  0%, 100% { box-shadow: 0 0 0 0 var(--amber-dim); }
  50% { box-shadow: 0 0 8px 2px var(--amber-dim); }
}

.app-card-title {
  font-size: 0.9rem;
  color: var(--amber-light);
  letter-spacing: 0.05em;
}

.app-card-desc {
  font-size: 0.72rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 0.75rem;
}

.app-card-stats {
  list-style: none;
  display: flex;
  gap: 1.5rem;
}

.stat-label {
  font-size: 0.6rem;
  color: var(--text-dim);
  letter-spacing: 0.1em;
}

.stat-value {
  font-size: 0.7rem;
  color: var(--amber);
  margin-left: 0.25rem;
}

/* ── FUTURE / TIMELINE SECTION ──────────────────────── */
.timeline {
  position: relative;
  max-width: 700px;
  margin: 0 auto 3rem;
  padding-left: 2rem;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--amber), var(--amber-dark), var(--amber));
  box-shadow: 0 0 8px var(--amber-glow);
}

.timeline-item {
  position: relative;
  padding: 0 0 2rem 1.5rem;
}

.timeline-marker {
  position: absolute;
  left: -2.35rem;
  top: 0.25rem;
  width: 12px;
  height: 12px;
  border: 2px solid var(--amber);
  background: var(--bg-deep);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--amber-glow);
}

.timeline-content {
  /* container for timeline item content */
}

.timeline-year {
  font-size: 0.7rem;
  color: var(--amber-dark);
  letter-spacing: 0.2em;
  margin-bottom: 0.25rem;
}

.timeline-title {
  font-size: 1rem;
  color: var(--amber-light);
  margin-bottom: 0.5rem;
}

.timeline-desc {
  font-size: 0.75rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.future-quote {
  text-align: center;
  max-width: 600px;
  margin: 0 auto;
  padding: 1.5rem;
  border: 1px solid var(--border-color);
  background: var(--bg-card);
}

.quote-text {
  font-size: 0.9rem;
  color: var(--amber-light);
  font-style: italic;
  line-height: 1.6;
  margin-bottom: 1rem;
}

.quote-author {
  font-size: 0.7rem;
  color: var(--text-dim);
  letter-spacing: 0.2em;
}

/* ── TERMINAL SECTION ───────────────────────────────── */
.terminal-window {
  max-width: 700px;
  margin: 0 auto 1.5rem;
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  overflow: hidden;
}

.terminal-header {
  display: flex;
  align-items: center;
  padding: 0.5rem 1rem;
  background: rgba(255, 149, 0, 0.05);
  border-bottom: 1px solid var(--border-color);
  gap: 0.75rem;
}

.terminal-dots {
  display: flex;
  gap: 6px;
}

.terminal-dots .dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  display: block;
}

.terminal-dots .dot.red { background: #ff5f57; }
.terminal-dots .dot.yellow { background: #ffbd2e; }
.terminal-dots .dot.green { background: #28c840; }

.terminal-title {
  font-size: 0.7rem;
  color: var(--text-dim);
}

.terminal-body {
  padding: 1rem;
  min-height: 250px;
  max-height: 350px;
  overflow-y: auto;
  font-size: 0.8rem;
}

.terminal-body::-webkit-scrollbar {
  width: 4px;
}

.terminal-body::-webkit-scrollbar-thumb {
  background: var(--amber-dark);
}

.terminal-output {
  margin-bottom: 0.5rem;
}

.terminal-output .output-line {
  padding: 0.15rem 0;
  color: var(--text-secondary);
  line-height: 1.5;
}

.terminal-output .output-line.highlight {
  color: var(--amber);
}

.terminal-output .output-line.error {
  color: #ff5f57;
}

.terminal-output .output-line.system {
  color: var(--text-dim);
  font-style: italic;
}

.terminal-input-line {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.terminal-prompt {
  color: var(--amber);
  white-space: nowrap;
}

.terminal-input {
  flex: 1;
  background: transparent;
  border: none;
  color: var(--amber-light);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  outline: none;
  caret-color: var(--amber);
}

.terminal-input::placeholder {
  color: var(--text-dim);
}

.terminal-hints {
  max-width: 700px;
  margin: 0 auto;
  text-align: center;
}

.hints-title {
  font-size: 0.7rem;
  color: var(--text-dim);
  letter-spacing: 0.2em;
  margin-bottom: 0.75rem;
}

.hints-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.5rem;
}

.hint-tag {
  font-size: 0.65rem;
  padding: 0.25rem 0.6rem;
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.2s ease;
}

.hint-tag:hover {
  border-color: var(--amber);
  color: var(--amber);
  background: var(--amber-dim);
}

/* ── Footer Bar ─────────────────────────────────────── */
.footer-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: 30px;
  background: var(--bg-dark);
  border-top: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.5rem;
  font-size: 0.6rem;
  color: var(--text-dim);
  letter-spacing: 0.15em;
  z-index: 100;
}

.footer-left,
.footer-center,
.footer-right {
  white-space: nowrap;
}

.footer-center {
  color: var(--amber-dark);
}

/* ── Capability Modal ─────────────────────────────────── */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.85);
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
  padding: 1rem;
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal-container {
  position: relative;
  width: 100%;
  max-width: 720px;
  max-height: 85vh;
  background: var(--bg-deep);
  border: 1px solid var(--amber);
  box-shadow:
    0 0 30px var(--amber-dim),
    0 0 60px rgba(255, 149, 0, 0.1),
    inset 0 0 30px rgba(255, 149, 0, 0.03);
  overflow: hidden;
  transform: scale(0.9) translateY(30px);
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

.modal-overlay.active .modal-container {
  transform: scale(1) translateY(0);
}

/* Modal scanlines overlay */
.modal-scanlines {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 2;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    rgba(0, 0, 0, 0.08) 2px,
    rgba(0, 0, 0, 0.08) 4px
  );
}

/* Modal header */
.modal-header {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.25rem;
  background: rgba(255, 149, 0, 0.05);
  border-bottom: 1px solid var(--border-color);
  z-index: 3;
}

.modal-tag {
  font-size: 0.6rem;
  color: var(--text-dim);
  letter-spacing: 0.3em;
  text-transform: uppercase;
}

.modal-title {
  font-size: clamp(0.9rem, 2.5vw, 1.2rem);
  color: var(--amber);
  text-shadow: 0 0 10px var(--amber-glow), 0 0 30px var(--amber-dim);
  letter-spacing: 0.08em;
  flex: 1;
  text-align: center;
}

.modal-close {
  position: relative;
  z-index: 5;
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--amber);
  font-size: 1.2rem;
  width: 28px;
  height: 28px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
  line-height: 1;
  flex-shrink: 0;
}

.modal-close:hover {
  background: var(--amber-dim);
  border-color: var(--amber);
  box-shadow: 0 0 8px var(--amber-glow);
  text-shadow: 0 0 5px var(--amber-glow);
}

/* Modal body */
.modal-body {
  position: relative;
  z-index: 3;
  padding: 1.25rem;
  overflow-y: auto;
  max-height: calc(85vh - 130px);
}

.modal-body::-webkit-scrollbar {
  width: 4px;
}

.modal-body::-webkit-scrollbar-thumb {
  background: var(--amber-dark);
}

.modal-overview {
  margin-bottom: 1.25rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border-color);
}

.modal-overview p {
  font-size: 0.8rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* Stats row */
.modal-stats-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
  margin-bottom: 1.25rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border-color);
}

.modal-stat {
  text-align: center;
  padding: 0.6rem 0.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
}

.modal-stat-label {
  display: block;
  font-size: 0.55rem;
  color: var(--text-dim);
  letter-spacing: 0.15em;
  margin-bottom: 0.25rem;
}

.modal-stat-value {
  display: block;
  font-size: 0.95rem;
  color: var(--amber);
  text-shadow: 0 0 8px var(--amber-glow);
  font-weight: 700;
}

/* Modal sections */
.modal-section {
  margin-bottom: 1.25rem;
}

.modal-section-title {
  font-size: 0.65rem;
  color: var(--amber-dark);
  letter-spacing: 0.2em;
  margin-bottom: 0.6rem;
  text-transform: uppercase;
}

/* Features list */
.modal-features {
  list-style: none;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.4rem;
}

.modal-features li {
  font-size: 0.72rem;
  color: var(--text-secondary);
  padding: 0.3rem 0.5rem;
  padding-left: 1rem;
  position: relative;
  background: var(--bg-card);
  border-left: 2px solid var(--amber-dark);
  transition: all 0.2s ease;
}

.modal-features li::before {
  content: '>';
  position: absolute;
  left: 0.25rem;
  color: var(--amber);
  font-weight: 700;
}

.modal-features li:hover {
  background: var(--bg-card-hover);
  border-left-color: var(--amber);
  color: var(--amber-light);
}

/* Use cases list */
.modal-usecases {
  list-style: none;
}

.modal-usecases li {
  font-size: 0.72rem;
  color: var(--text-secondary);
  padding: 0.4rem 0.5rem;
  padding-left: 1.25rem;
  position: relative;
  line-height: 1.5;
  transition: all 0.2s ease;
}

.modal-usecases li::before {
  content: '//';
  position: absolute;
  left: 0.25rem;
  color: var(--amber);
  font-weight: 700;
}

.modal-usecases li:hover {
  color: var(--amber-light);
  background: var(--amber-faint);
}

/* Technical specs */
.modal-specs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.4rem;
}

.modal-spec-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.35rem 0.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  font-size: 0.68rem;
  transition: all 0.2s ease;
}

.modal-spec-item:hover {
  border-color: var(--amber);
  background: var(--bg-card-hover);
}

.modal-spec-key {
  color: var(--text-dim);
  letter-spacing: 0.05em;
}

.modal-spec-val {
  color: var(--amber);
  font-weight: 700;
}

/* Modal footer */
.modal-footer {
  position: relative;
  z-index: 3;
  padding: 0.75rem 1.25rem;
  border-top: 1px solid var(--border-color);
  background: rgba(255, 149, 0, 0.03);
  text-align: center;
}

.modal-footer .neon-btn {
  font-size: 0.7rem;
  padding: 0.5rem 1.5rem;
}

/* Capability card pointer cursor */
.capability-card {
  cursor: pointer;
}

/* ── Responsive ─────────────────────────────────────── */
@media (max-width: 768px) {
  .screen {
    padding: 1.5rem;
    padding-left: 1.5rem;
    padding-bottom: 4rem;
  }

  .side-nav {
    display: none;
  }

  .capabilities-grid,
  .applications-grid {
    grid-template-columns: 1fr;
  }

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

  .hero-title-line {
    font-size: clamp(2rem, 10vw, 3rem);
  }

  .app-card-stats {
    flex-direction: column;
    gap: 0.5rem;
  }

  .footer-bar {
    font-size: 0.5rem;
  }

  .modal-container {
    max-width: 100%;
    max-height: 90vh;
  }

  .modal-body {
    max-height: calc(90vh - 130px);
  }

  .modal-stats-row {
    grid-template-columns: 1fr;
  }

  .modal-features {
    grid-template-columns: 1fr;
  }

  .modal-specs {
    grid-template-columns: 1fr;
  }

  .modal-header {
    flex-wrap: wrap;
    gap: 0.5rem;
  }

  .modal-tag {
    order: 1;
    width: 100%;
    text-align: center;
  }

  .modal-title {
    order: 2;
  }

  .modal-close {
    order: 3;
  }
}

@media (max-width: 480px) {
  .metrics-grid {
    grid-template-columns: 1fr;
  }

  .arrow-nav {
    bottom: 40px;
  }
}