/* ========================================
   NEXUS DESIGN SYSTEM — SHARED STYLES
   ======================================== */

/* ── TOKENS ── */
:root {
  --bg: #0a0a0f;
  --fg: #e0e0e0;
  --card: #12121a;
  --muted: #1c1c2e;
  --muted-fg: #6b7280;
  --accent: #00ff88;
  --accent-secondary: #ff00ff;
  --accent-tertiary: #00d4ff;
  --border: #2a2a3a;
  --input: #12121a;
  --destructive: #ff3366;

  --font-heading: "Orbitron", "Share Tech Mono", monospace;
  --font-body: "JetBrains Mono", "Fira Code", "Consolas", monospace;
  --font-label: "Share Tech Mono", monospace;

  --shadow-neon: 0 0 5px #00ff88, 0 0 10px #00ff8840;
  --shadow-neon-sm: 0 0 3px #00ff88, 0 0 6px #00ff8830;
  --shadow-neon-lg: 0 0 10px #00ff88, 0 0 20px #00ff8860, 0 0 40px #00ff8830;
  --shadow-neon-secondary: 0 0 5px #ff00ff, 0 0 20px #ff00ff60;
  --shadow-neon-tertiary: 0 0 5px #00d4ff, 0 0 20px #00d4ff60;

  --chamfer: polygon(
    0 10px, 10px 0,
    calc(100% - 10px) 0, 100% 10px,
    100% calc(100% - 10px), calc(100% - 10px) 100%,
    10px 100%, 0 calc(100% - 10px)
  );
  --chamfer-sm: polygon(
    0 6px, 6px 0,
    calc(100% - 6px) 0, 100% 6px,
    100% calc(100% - 6px), calc(100% - 6px) 100%,
    6px 100%, 0 calc(100% - 6px)
  );
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg);
  color: var(--fg);
  line-height: 1.6;
  letter-spacing: 0.03em;
  overflow-x: hidden;
  position: relative;
}

/* ── SCANLINES ── */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    rgba(0, 0, 0, 0.15) 2px,
    rgba(0, 0, 0, 0.15) 4px
  );
  pointer-events: none;
  z-index: 9999;
}

/* ── CIRCUIT GRID ── */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(0, 255, 136, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 255, 136, 0.03) 1px, transparent 1px);
  background-size: 50px 50px;
  pointer-events: none;
  z-index: -1;
}

/* ── TYPOGRAPHY ── */
h1, h2, h3, h4 {
  font-family: var(--font-heading);
  text-transform: uppercase;
  line-height: 1.1;
}

h1 {
  font-size: clamp(2.8rem, 8vw, 6rem);
  font-weight: 900;
  letter-spacing: 0.1em;
}

h2 {
  font-size: clamp(1.8rem, 5vw, 3rem);
  font-weight: 700;
  letter-spacing: 0.06em;
}

h3 {
  font-size: clamp(1.1rem, 2vw, 1.4rem);
  font-weight: 600;
  letter-spacing: 0.04em;
}

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

.label {
  font-family: var(--font-label);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--muted-fg);
}

/* ── LAYOUT ── */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section {
  padding: 6rem 0;
  position: relative;
}

/* ── UTILITIES ── */
.accent { color: var(--accent); }
.accent-secondary { color: var(--accent-secondary); }
.accent-tertiary { color: var(--accent-tertiary); }
.chamfer { clip-path: var(--chamfer); }
.chamfer-sm { clip-path: var(--chamfer-sm); }

.neon-border {
  border: 1px solid var(--accent);
  box-shadow: var(--shadow-neon-sm);
}

.section-label {
  font-family: var(--font-label);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.25em;
  color: var(--accent);
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.section-label::before {
  content: "//";
  color: var(--accent-secondary);
}

/* ── BUTTONS ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 2rem;
  font-family: var(--font-label);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  cursor: pointer;
  transition: all 150ms cubic-bezier(0.4, 0, 0.2, 1);
  clip-path: var(--chamfer-sm);
  min-height: 44px;
  border: none;
  background: none;
  position: relative;
}

.btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  box-shadow: var(--shadow-neon);
}

.btn-primary {
  border: 2px solid var(--accent);
  color: var(--accent);
  background: transparent;
}

.btn-primary:hover {
  background: var(--accent);
  color: var(--bg);
  box-shadow: var(--shadow-neon);
}

.btn-glitch {
  background: var(--accent);
  color: var(--bg);
  font-weight: 700;
}

.btn-glitch:hover {
  filter: brightness(1.15);
  box-shadow: var(--shadow-neon-lg);
}

.btn-secondary {
  border: 2px solid var(--accent-secondary);
  color: var(--accent-secondary);
  background: transparent;
}

.btn-secondary:hover {
  background: var(--accent-secondary);
  color: var(--bg);
  box-shadow: var(--shadow-neon-secondary);
}

.btn-ghost {
  color: var(--muted-fg);
  border: none;
}

.btn-ghost:hover {
  color: var(--accent);
  background: rgba(0, 255, 136, 0.08);
}

.btn-tertiary {
  border: 2px solid var(--accent-tertiary);
  color: var(--accent-tertiary);
  background: transparent;
}

.btn-tertiary:hover {
  background: var(--accent-tertiary);
  color: var(--bg);
  box-shadow: var(--shadow-neon-tertiary);
}

.btn-sm {
  padding: 0.5rem 1.2rem;
  font-size: 0.75rem;
  min-height: 36px;
}

/* ── CARDS ── */
.card {
  background: var(--card);
  border: 1px solid var(--border);
  clip-path: var(--chamfer);
  padding: 2rem;
  transition: all 300ms cubic-bezier(0.4, 0, 0.2, 1);
}

.card-hover:hover {
  transform: translateY(-2px);
  border-color: var(--accent);
  box-shadow: var(--shadow-neon-sm);
}

.card-terminal {
  background: var(--bg);
  border: 1px solid var(--border);
  clip-path: var(--chamfer);
  padding: 0;
  position: relative;
  overflow: hidden;
}

.card-terminal__header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.25rem;
  border-bottom: 1px solid var(--border);
}

.card-terminal__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

.card-terminal__dot--red { background: var(--destructive); }
.card-terminal__dot--yellow { background: #ffaa00; }
.card-terminal__dot--green { background: var(--accent); }

.card-terminal__title {
  font-family: var(--font-label);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--muted-fg);
  margin-left: 0.5rem;
}

.card-terminal__body {
  padding: 1.5rem;
}

.card-holographic {
  background: rgba(28, 28, 46, 0.3);
  border: 1px solid rgba(0, 255, 136, 0.3);
  box-shadow: var(--shadow-neon-sm);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  padding: 2rem;
  position: relative;
}

.card-holographic::before,
.card-holographic::after,
.card-holographic .corner-bl,
.card-holographic .corner-br {
  content: "";
  position: absolute;
  width: 16px;
  height: 16px;
  border-color: var(--accent);
  border-style: solid;
  border-width: 0;
}

.card-holographic::before {
  top: -1px; left: -1px;
  border-top-width: 1px; border-left-width: 1px;
}

.card-holographic::after {
  top: -1px; right: -1px;
  border-top-width: 1px; border-right-width: 1px;
}

.card-holographic .corner-bl {
  bottom: -1px; left: -1px;
  border-bottom-width: 1px; border-left-width: 1px;
}

.card-holographic .corner-br {
  bottom: -1px; right: -1px;
  border-bottom-width: 1px; border-right-width: 1px;
}

/* ── INPUT (Terminal style) ── */
.cyber-input-wrap {
  position: relative;
}

.cyber-input-wrap::before {
  content: ">";
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--accent);
  font-family: var(--font-label);
  font-size: 0.9rem;
  pointer-events: none;
  z-index: 2;
}

.cyber-input {
  width: 100%;
  padding: 0.85rem 1rem 0.85rem 2.25rem;
  font-family: var(--font-body);
  font-size: 0.85rem;
  color: var(--accent);
  background: var(--input);
  border: 1px solid var(--border);
  clip-path: var(--chamfer-sm);
  transition: all 200ms;
  letter-spacing: 0.03em;
}

.cyber-input::placeholder {
  color: var(--muted-fg);
  font-family: var(--font-label);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: 0.8rem;
}

.cyber-input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: var(--shadow-neon-sm);
}

/* ── ANIMATIONS ── */
@keyframes blink {
  50% { opacity: 0; }
}

@keyframes glitch {
  0%, 100% { transform: translate(0); }
  20% { transform: translate(-2px, 2px); }
  40% { transform: translate(2px, -2px); }
  60% { transform: translate(-1px, -1px); }
  80% { transform: translate(1px, 1px); }
}

@keyframes glitch-skew {
  0%, 100% { transform: skew(0deg); }
  20% { transform: skew(-0.5deg); }
  40% { transform: skew(0.5deg); }
  60% { transform: skew(-0.3deg); }
  80% { transform: skew(0.3deg); }
}

@keyframes rgbShift {
  0%, 100% { text-shadow: -2px 0 #ff00ff, 2px 0 #00d4ff; }
  33% { text-shadow: 2px 0 #ff00ff, -2px 0 #00d4ff; }
  66% { text-shadow: -1px 0 #ff00ff, 1px 0 #00d4ff; }
}

@keyframes neon-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.85; }
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}

@keyframes fade-in-up {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}

.animate-on-scroll {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 600ms cubic-bezier(0.4, 0, 0.2, 1),
              transform 600ms cubic-bezier(0.4, 0, 0.2, 1);
}

.animate-on-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}

.cursor-blink::after {
  content: "_";
  animation: blink 1s step-end infinite;
  color: var(--accent);
}

/* ── GLITCH TEXT ── */
.glitch-text {
  position: relative;
  animation: glitch-skew 4s ease-in-out infinite alternate;
}

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

.glitch-text::before {
  color: var(--accent-secondary);
  clip-path: inset(0 0 60% 0);
  animation: glitch 3s ease-in-out infinite alternate;
  opacity: 0.6;
}

.glitch-text::after {
  color: var(--accent-tertiary);
  clip-path: inset(40% 0 0 0);
  animation: glitch 2.5s ease-in-out infinite alternate-reverse;
  opacity: 0.6;
}

@media (prefers-reduced-motion: reduce) {
  .glitch-text, .glitch-text::before, .glitch-text::after { animation: none; }
  .glitch-text::before, .glitch-text::after { display: none; }
  .cursor-blink::after { animation: none; opacity: 1; }
}

/* ── NAVIGATION ── */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(10, 10, 15, 0.8);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  transition: border-color 300ms;
}

.nav.scrolled {
  border-bottom-color: rgba(0, 255, 136, 0.2);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.nav__logo {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  text-shadow: 0 0 10px rgba(0, 255, 136, 0.5);
}

.nav__logo span {
  color: var(--muted-fg);
  font-weight: 400;
  font-size: 0.85rem;
}

.nav__links {
  display: none;
  list-style: none;
  gap: 2rem;
  align-items: center;
}

.nav__links a {
  font-family: var(--font-label);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--muted-fg);
  transition: color 150ms;
  position: relative;
}

.nav__links a:hover,
.nav__links a.active {
  color: var(--accent);
}

.nav__links a.active::after {
  content: "";
  position: absolute;
  bottom: -4px;
  left: 0; right: 0;
  height: 1px;
  background: var(--accent);
  box-shadow: var(--shadow-neon-sm);
}

@media (min-width: 1024px) {
  .nav__links { display: flex; }
}

/* ── MOBILE MENU ── */
.nav__hamburger {
  display: flex;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  z-index: 1002;
}

.nav__hamburger span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--accent);
  transition: all 200ms;
}

.nav__hamburger.open span:nth-child(1) {
  transform: rotate(45deg) translate(4px, 5px);
}

.nav__hamburger.open span:nth-child(2) {
  opacity: 0;
}

.nav__hamburger.open span:nth-child(3) {
  transform: rotate(-45deg) translate(4px, -5px);
}

@media (min-width: 1024px) {
  .nav__hamburger { display: none; }
}

.nav__mobile {
  position: fixed;
  top: 64px; left: 0; right: 0; bottom: 0;
  background: rgba(10, 10, 15, 0.96);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  z-index: 999;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 200ms;
}

.nav__mobile.open {
  opacity: 1;
  pointer-events: all;
}

.nav__mobile a {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted-fg);
  transition: color 150ms;
}

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

/* ── FOOTER ── */
.footer {
  border-top: 1px solid var(--border);
  padding: 4rem 0 2rem;
}

.footer__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  margin-bottom: 3rem;
}

.footer__brand-name {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.75rem;
}

.footer__brand-desc {
  font-size: 0.8rem;
  color: var(--muted-fg);
  line-height: 1.7;
  max-width: 280px;
}

.footer__col-title {
  font-family: var(--font-label);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--accent);
  margin-bottom: 1rem;
}

.footer__links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.footer__links a {
  font-size: 0.8rem;
  color: var(--muted-fg);
  transition: color 150ms;
}

.footer__links a::before {
  content: "> ";
  color: var(--border);
  transition: color 150ms;
}

.footer__links a:hover { color: var(--accent); }
.footer__links a:hover::before { color: var(--accent); }

.footer__bottom {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
  font-family: var(--font-label);
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--muted-fg);
}

.footer__bottom-links {
  display: flex;
  gap: 1.5rem;
}

.footer__bottom-links a {
  color: var(--muted-fg);
  transition: color 150ms;
}

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

@media (min-width: 768px) {
  .footer__grid { grid-template-columns: 1.5fr repeat(3, 1fr); }
  .footer__bottom { flex-direction: row; justify-content: space-between; }
}

/* ── PAGE HEADER (subpages) ── */
.page-hero {
  padding: 8rem 0 3rem;
  position: relative;
}

.page-hero__gradient {
  position: absolute;
  top: -10%;
  left: -5%;
  width: 500px;
  height: 400px;
  background: radial-gradient(circle, rgba(0, 255, 136, 0.05) 0%, transparent 70%);
  pointer-events: none;
}

.page-hero h1 {
  font-size: clamp(2rem, 6vw, 3.5rem);
  margin-bottom: 1rem;
}

.page-hero p {
  color: var(--muted-fg);
  font-size: 0.95rem;
  max-width: 600px;
  line-height: 1.7;
}

/* ── SEARCH BAR ── */
.search-bar {
  max-width: 600px;
  margin: 2.5rem 0 3rem;
}

/* ── TAGS / FILTERS ── */
.tag-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 2rem;
}

.tag-btn {
  padding: 0.4rem 1rem;
  font-family: var(--font-label);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--muted-fg);
  cursor: pointer;
  clip-path: var(--chamfer-sm);
  transition: all 150ms;
  min-height: 36px;
}

.tag-btn:hover,
.tag-btn.active {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(0, 255, 136, 0.06);
}

/* ── EMPTY STATE ── */
.empty-state {
  text-align: center;
  padding: 4rem 2rem;
  color: var(--muted-fg);
}

.empty-state__icon {
  font-size: 2.5rem;
  margin-bottom: 1rem;
  opacity: 0.4;
}

.empty-state__text {
  font-family: var(--font-label);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

/* ── RESULT COUNT ── */
.result-count {
  font-family: var(--font-label);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--muted-fg);
  margin-bottom: 1.5rem;
}

.result-count span {
  color: var(--accent);
}

/* ── STAGGER ── */
.stagger-1 { transition-delay: 100ms; }
.stagger-2 { transition-delay: 200ms; }
.stagger-3 { transition-delay: 300ms; }
.stagger-4 { transition-delay: 400ms; }
.stagger-5 { transition-delay: 500ms; }
.stagger-6 { transition-delay: 600ms; }

/* ========================================
   MOBILE RESPONSIVE OVERRIDES
   ======================================== */
@media (max-width: 767px) {
  html { font-size: 15px; }

  .container { padding: 0 1.25rem; }

  .section { padding: 3.5rem 0; }

  h1 {
    font-size: clamp(2rem, 10vw, 3rem);
    letter-spacing: 0.04em;
    word-break: break-word;
  }

  h2 {
    font-size: clamp(1.5rem, 7vw, 2rem);
    letter-spacing: 0.03em;
  }

  h3 {
    font-size: 1rem;
    letter-spacing: 0.02em;
  }

  .section-label {
    font-size: 0.65rem;
    letter-spacing: 0.15em;
  }

  .nav__logo {
    font-size: 0.9rem;
    letter-spacing: 0.06em;
  }

  .page-hero {
    padding: 6rem 0 2rem;
  }

  .page-hero h1 {
    font-size: clamp(1.6rem, 8vw, 2.5rem);
  }

  .page-hero p {
    font-size: 0.85rem;
  }

  .search-bar {
    margin: 1.5rem 0 2rem;
  }

  .tag-filters {
    gap: 0.35rem;
  }

  .tag-btn {
    padding: 0.35rem 0.7rem;
    font-size: 0.6rem;
    min-height: 32px;
  }

  .card {
    padding: 1.25rem;
  }

  .card-terminal__body {
    padding: 1rem;
  }

  .btn {
    padding: 0.7rem 1.25rem;
    font-size: 0.75rem;
  }

  .btn-sm {
    padding: 0.45rem 0.8rem;
    font-size: 0.65rem;
  }

  .footer {
    padding: 3rem 0 1.5rem;
  }

  .footer__grid {
    gap: 2rem;
  }

  .footer__brand-desc {
    max-width: 100%;
  }

  .footer__bottom {
    font-size: 0.6rem;
    text-align: center;
  }

  .footer__bottom-links {
    justify-content: center;
  }

  .empty-state {
    padding: 2.5rem 1rem;
  }

  .cyber-input {
    font-size: 0.8rem;
    padding: 0.75rem 0.85rem 0.75rem 2rem;
  }

  .cyber-input::placeholder {
    font-size: 0.7rem;
  }
}