/* MetalBear — Design System
   Palette: near-black bg, silver/white text, cold blue accent
   Typography: JetBrains Mono (code), Inter (body)
*/

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

:root {
  --bg-primary: #0a0a0a;
  --bg-secondary: #111111;
  --bg-card: #161616;
  --bg-card-hover: #1a1a1a;
  --border: #222222;
  --border-light: #2a2a2a;

  --text-primary: #e8e8e8;
  --text-secondary: #999999;
  --text-muted: #666666;

  --accent: #4a9eff;
  --accent-dim: rgba(74, 158, 255, 0.15);
  --accent-glow: rgba(74, 158, 255, 0.3);

  --font-mono: 'JetBrains Mono', 'SF Mono', 'Fira Code', monospace;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

  --radius: 6px;
  --radius-lg: 12px;
  --transition: 0.2s ease;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  cursor: default;
}

/* ─── Cursor & Interactive States ─── */
a,
button,
[role="button"],
input[type="submit"],
.btn,
.card,
.capability,
.stack-bar,
.job-item,
.blog-card,
.nav-toggle {
  cursor: pointer;
}

input,
textarea,
select {
  cursor: text;
}

::selection {
  background: var(--accent);
  color: #000;
}

body {
  font-family: var(--font-sans);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

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

img {
  display: block;
  max-width: 100%;
}

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ─── Navigation ─── */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 16px 0;
  transition: background var(--transition), backdrop-filter var(--transition);
}

.nav.scrolled {
  background: rgba(10, 10, 10, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

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

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.nav-logo-img {
  width: 32px;
  height: 32px;
}

.nav-logo-text {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--text-primary);
}

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

.nav-links a {
  font-size: 13px;
  font-weight: 400;
  color: var(--text-secondary);
  transition: color var(--transition);
  letter-spacing: 0.3px;
}

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

.nav-cta {
  padding: 8px 18px;
  border: 1px solid var(--border-light);
  border-radius: var(--radius);
  transition: all var(--transition);
}

.nav-cta:hover {
  border-color: var(--accent);
  color: var(--accent) !important;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--text-primary);
  transition: all var(--transition);
}

.mobile-menu {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 99;
  background: var(--bg-primary);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 32px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.mobile-menu.active {
  opacity: 1;
  pointer-events: all;
}

.mobile-menu a {
  font-size: 24px;
  font-weight: 300;
  color: var(--text-secondary);
  transition: color var(--transition);
}

.mobile-menu a:hover {
  color: var(--text-primary);
}

/* ─── Hero ─── */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 120px 24px 80px;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  opacity: 0.3;
}

.hero-bg canvas {
  width: 100%;
  height: 100%;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
  text-align: center;
}

.hero-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 400;
  color: var(--accent);
  letter-spacing: 2px;
  text-transform: uppercase;
  padding: 6px 14px;
  border: 1px solid var(--accent-dim);
  border-radius: 20px;
  margin-bottom: 32px;
  background: var(--accent-dim);
}

.hero-title {
  font-size: clamp(42px, 7vw, 80px);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -2px;
  margin-bottom: 24px;
}

.hero-accent {
  background: linear-gradient(135deg, var(--accent), #7bb8ff);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-sub {
  font-size: 17px;
  line-height: 1.7;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 40px;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 64px;
}

.hero-stats {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 48px;
  padding-top: 32px;
  border-top: 1px solid var(--border);
}

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

.stat-value {
  font-family: var(--font-mono);
  font-size: 24px;
  font-weight: 700;
  color: var(--text-primary);
}

.stat-label {
  font-size: 12px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* ─── Buttons ─── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 28px;
  font-size: 14px;
  font-weight: 500;
  border-radius: var(--radius);
  transition: all var(--transition);
  cursor: pointer;
  border: none;
  font-family: var(--font-sans);
}

.btn-primary {
  background: var(--accent);
  color: #000;
}

.btn-primary:hover {
  background: #6bb3ff;
  box-shadow: 0 0 20px var(--accent-glow);
  transform: translateY(-1px);
}

.btn-primary:active {
  transform: translateY(1px) scale(0.98);
  box-shadow: none;
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border-light);
}

.btn-ghost:hover {
  border-color: var(--text-secondary);
  color: var(--text-primary);
  transform: translateY(-1px);
}

.btn-ghost:active {
  transform: translateY(1px) scale(0.98);
}

.btn-full {
  width: 100%;
}

/* ─── Sections ─── */
.section {
  padding: 120px 0;
}

.section-dark {
  background: var(--bg-secondary);
}

.section-header {
  margin-bottom: 64px;
}

.section-tag {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--accent);
  letter-spacing: 1.5px;
  margin-bottom: 16px;
}

.section-header h2 {
  font-size: clamp(32px, 4vw, 48px);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -1px;
  margin-bottom: 16px;
}

.section-desc {
  font-size: 16px;
  color: var(--text-secondary);
  max-width: 560px;
  line-height: 1.7;
}

/* ─── Grid ─── */
.grid {
  display: grid;
  gap: 24px;
}

.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

/* ─── Cards ─── */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: all 0.3s ease;
}

.card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-light);
  transform: translateY(-2px);
}

.card-icon {
  width: 40px;
  height: 40px;
  margin-bottom: 20px;
  color: var(--accent);
}

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

.card h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 12px;
}

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

/* ─── Capabilities List ─── */
.capabilities-list {
  display: flex;
  flex-direction: column;
}

.capability {
  display: flex;
  align-items: center;
  gap: 32px;
  padding: 32px 0;
  border-bottom: 1px solid var(--border);
  transition: all var(--transition);
  cursor: default;
}

.capability:first-child {
  border-top: 1px solid var(--border);
}

.capability:hover {
  padding-left: 12px;
}

.capability:hover .capability-num {
  color: var(--accent);
}

.capability:hover .capability-arrow {
  transform: translateX(4px);
  color: var(--accent);
}

.capability-num {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--text-muted);
  min-width: 32px;
  transition: color var(--transition);
}

.capability-content {
  flex: 1;
}

.capability-content h3 {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 8px;
}

.capability-content p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

.capability-arrow {
  font-size: 20px;
  color: var(--text-muted);
  transition: all var(--transition);
}

/* ─── Stack Diagram ─── */
.stack {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.stack-layer {
  display: flex;
  align-items: center;
  gap: 16px;
}

.stack-label {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-muted);
  min-width: 28px;
}

.stack-bar {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  font-size: 14px;
  font-weight: 500;
  transition: all 0.3s ease;
}

.stack-bar:hover {
  border-color: var(--accent);
  box-shadow: 0 0 15px var(--accent-dim);
}

.stack-tech {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
  letter-spacing: 0.5px;
}

.stack-l4 { background: rgba(74, 158, 255, 0.08); }
.stack-l3 { background: rgba(74, 158, 255, 0.06); }
.stack-l2 { background: rgba(74, 158, 255, 0.04); }
.stack-l1 { background: rgba(74, 158, 255, 0.02); }

/* ─── Contact Form ─── */
.contact-wrap {
  max-width: 640px;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 14px 18px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 14px;
  transition: border-color var(--transition);
  outline: none;
}

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

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

.contact-form textarea {
  resize: vertical;
  min-height: 100px;
}

/* ─── Footer ─── */
.footer {
  padding: 64px 0 32px;
  border-top: 1px solid var(--border);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 64px;
  margin-bottom: 48px;
}

.footer-brand {
  max-width: 280px;
}

.footer-logo {
  width: 36px;
  height: 36px;
  margin-bottom: 12px;
}

.footer-brand p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

.footer-links {
  display: flex;
  gap: 64px;
}

.footer-col {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col h4 {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.footer-col a {
  font-size: 13px;
  color: var(--text-secondary);
  transition: color var(--transition);
}

.footer-col a:hover {
  color: var(--text-primary);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  font-size: 12px;
  color: var(--text-muted);
}

.footer-status {
  display: flex;
  align-items: center;
  gap: 6px;
}

.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #22c55e;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

/* ─── Animations ─── */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* ─── Responsive ─── */
@media (max-width: 768px) {
  .nav-links {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .mobile-menu {
    display: flex;
  }

  .hero {
    padding: 100px 20px 60px;
  }

  .hero-title {
    letter-spacing: -1px;
  }

  .hero-stats {
    flex-direction: column;
    gap: 20px;
  }

  .hero-actions {
    flex-direction: column;
  }

  .grid-3 {
    grid-template-columns: 1fr;
  }

  .capability {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .capability-arrow {
    display: none;
  }

  .stack-bar {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

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

  .footer-inner {
    flex-direction: column;
    gap: 40px;
  }

  .footer-links {
    flex-direction: column;
    gap: 32px;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 12px;
    align-items: flex-start;
  }

  .section {
    padding: 80px 0;
  }
}

@media (max-width: 480px) {
  .hero-sub {
    font-size: 15px;
  }

  .section-header h2 {
    font-size: 28px;
  }
}

/* ─── Nav Active Link ─── */
.nav-links a.active {
  color: var(--text-primary);
  position: relative;
}

.nav-links a.active::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--accent);
}

/* ─── Page Hero (subpages) ─── */
.page-hero {
  padding: 140px 0 80px;
  border-bottom: 1px solid var(--border);
}

.page-title {
  font-size: clamp(36px, 5vw, 56px);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -1.5px;
  margin-bottom: 20px;
}

.page-desc {
  font-size: 17px;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 600px;
}

/* ─── About Page ─── */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
}

.about-block h2 {
  font-size: 24px;
  font-weight: 600;
  margin-bottom: 16px;
}

.about-block p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.8;
}

.card-number {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--accent);
  margin-bottom: 16px;
}

.team-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}

.team-stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 24px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: all 0.3s ease;
}

.team-stat:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 4px 20px var(--accent-dim);
}

/* ─── CTA Block ─── */
.cta-block {
  text-align: center;
  max-width: 500px;
  margin: 0 auto;
}

.cta-block h2 {
  font-size: 32px;
  font-weight: 700;
  margin-bottom: 12px;
}

.cta-block p {
  font-size: 16px;
  color: var(--text-secondary);
  margin-bottom: 28px;
}

.cta-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
}

/* ─── Careers - Job List ─── */
.jobs-list {
  display: flex;
  flex-direction: column;
}

.job-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 28px 24px;
  border-bottom: 1px solid var(--border);
  transition: all 0.25s ease;
  border-radius: 0;
}

.job-item:first-child {
  border-top: 1px solid var(--border);
}

.job-item:hover {
  background: var(--bg-card);
  padding-left: 32px;
  border-color: var(--border-light);
}

.job-item:hover .job-arrow {
  transform: translateX(4px);
  color: var(--accent);
}

.job-item:active {
  background: var(--bg-card-hover);
  transform: scale(0.995);
}

.job-info h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 6px;
}

.job-info p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.5;
}

.job-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.job-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
  padding: 4px 10px;
  border: 1px solid var(--border);
  border-radius: 4px;
}

.job-arrow {
  font-size: 18px;
  color: var(--text-muted);
  transition: all 0.2s ease;
}

/* ─── Careers - Process ─── */
.process-steps {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.process-step {
  display: flex;
  align-items: flex-start;
  gap: 24px;
  padding: 28px 0;
  border-bottom: 1px solid var(--border);
  transition: all 0.2s ease;
}

.process-step:first-child {
  border-top: 1px solid var(--border);
}

.process-step:hover {
  padding-left: 8px;
}

.process-step:hover .process-num {
  color: var(--accent);
}

.process-num {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--text-muted);
  min-width: 32px;
  padding-top: 2px;
  transition: color 0.2s ease;
}

.process-step h3 {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 6px;
}

.process-step p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ─── Blog Page ─── */
.blog-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

.blog-card {
  padding: 32px;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
}

.blog-card:hover {
  border-color: var(--border-light);
  background: var(--bg-card);
  transform: translateY(-3px);
  box-shadow: 0 8px 30px rgba(0,0,0,0.3);
}

.blog-card:active {
  transform: translateY(0px);
  box-shadow: none;
}

.blog-card-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}

.blog-date {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-muted);
}

.blog-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--accent);
  padding: 3px 8px;
  background: var(--accent-dim);
  border-radius: 4px;
}

.blog-card h2 {
  font-size: 20px;
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: 12px;
}

.blog-card h2 a {
  transition: color 0.2s ease;
}

.blog-card:hover h2 a {
  color: var(--accent);
}

.blog-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  flex: 1;
}

.blog-read {
  display: inline-block;
  margin-top: 16px;
  font-size: 13px;
  font-weight: 500;
  color: var(--accent);
  transition: transform 0.2s ease;
}

.blog-card:hover .blog-read {
  transform: translateX(4px);
}

/* ─── Newsletter Form ─── */
.newsletter-form {
  display: flex;
  gap: 12px;
  max-width: 400px;
  margin: 0 auto;
}

.newsletter-form input {
  flex: 1;
  padding: 12px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 14px;
  outline: none;
  transition: border-color 0.2s ease;
}

.newsletter-form input:focus {
  border-color: var(--accent);
}

.newsletter-form input::placeholder {
  color: var(--text-muted);
}

/* ─── Enhanced Hover/Focus States ─── */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.nav-logo:hover .nav-logo-img {
  filter: drop-shadow(0 0 6px var(--accent-glow));
  transition: filter 0.3s ease;
}

.nav-logo:hover .nav-logo-text {
  color: var(--accent);
  transition: color 0.2s ease;
}

.footer-col a:hover {
  color: var(--accent);
  transform: translateX(2px);
  display: inline-block;
}

.hero-badge:hover {
  background: rgba(74, 158, 255, 0.25);
  border-color: var(--accent);
  transform: scale(1.02);
  transition: all 0.2s ease;
}

.stat:hover .stat-value {
  color: var(--accent);
  transition: color 0.2s ease;
}

/* ─── Subpage Responsive ─── */
@media (max-width: 768px) {
  .about-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

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

  .blog-grid {
    grid-template-columns: 1fr;
  }

  .job-item {
    flex-direction: column;
    align-items: flex-start;
  }

  .job-meta {
    flex-wrap: wrap;
  }

  .cta-actions {
    flex-direction: column;
    align-items: center;
  }

  .newsletter-form {
    flex-direction: column;
  }

  .page-hero {
    padding: 120px 0 60px;
  }

  .process-step {
    flex-direction: column;
    gap: 8px;
  }
}

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