:root {
  --bg-deep: #0A0E14;
  --bg-carbon: #111820;
  --bg-graphite: #1A2330;
  --text-primary: #E8EDF2;
  --text-secondary: #8A94A6;
  --accent-green: #00C853;
  --accent-amber: #FFB300;
  --border-slate: #2A3441;
  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'Inter', sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;
  --space-unit: 8px;
  --container-max: 1200px;
  --transition-fast: 200ms ease-out;
  --transition-smooth: 600ms cubic-bezier(0.22, 1, 0.36, 1);
}

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

html {
  scroll-behavior: smooth;
}

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

/* Custom scrollbar */
::-webkit-scrollbar {
  width: 10px;
}
::-webkit-scrollbar-track {
  background: var(--bg-deep);
}
::-webkit-scrollbar-thumb {
  background: var(--border-slate);
  border-radius: 5px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--accent-green);
}

/* Progress bar */
#portcv-progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0%;
  background: linear-gradient(90deg, var(--accent-green), var(--accent-amber));
  z-index: 1000;
  transition: width 0.1s linear;
}

/* Back to top */
#back-to-top {
  position: fixed;
  bottom: 20px;
  left: 20px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--bg-graphite);
  border: 1px solid var(--border-slate);
  color: var(--text-primary);
  font-size: 20px;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s, visibility 0.3s, border-color 0.3s;
  z-index: 999;
}
#back-to-top.visible {
  opacity: 1;
  visibility: visible;
}
#back-to-top:hover,
#back-to-top:focus-visible {
  border-color: var(--accent-green);
  outline: none;
}

/* Header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  background: rgba(10, 14, 20, 0.9);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-slate);
}
.header-inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 16px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 24px;
  color: var(--text-primary);
  text-decoration: none;
  letter-spacing: -0.02em;
}
.logo-accent {
  color: var(--accent-green);
}
.nav-menu {
  display: flex;
  list-style: none;
  gap: 24px;
}
.nav-menu a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: color 0.3s;
  position: relative;
}
.nav-menu a:hover,
.nav-menu a:focus-visible {
  color: var(--accent-green);
  outline: none;
}
.nav-menu a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent-green);
  transition: width 0.3s;
}
.nav-menu a:hover::after,
.nav-menu a:focus-visible::after {
  width: 100%;
}
.nav-cta {
  border: 1px solid var(--accent-green);
  padding: 8px 16px;
  border-radius: 4px;
  color: var(--accent-green) !important;
}
.nav-cta:hover {
  background: var(--accent-green);
  color: var(--bg-deep) !important;
}
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}
.nav-toggle-bar {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  margin: 5px 0;
  transition: transform 0.3s, opacity 0.3s;
}

/* Hero */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  padding: 120px 24px 80px;
  overflow: hidden;
}
.hero-bg-grid {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: linear-gradient(var(--border-slate) 1px, transparent 1px),
    linear-gradient(90deg, var(--border-slate) 1px, transparent 1px);
  background-size: 60px 60px;
  opacity: 0.05;
  pointer-events: none;
}
.hero-content {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 60px;
  max-width: var(--container-max);
  margin: 0 auto;
  width: 100%;
  align-items: center;
}
.hero-meta {
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.08em;
  color: var(--accent-green);
  margin-bottom: 24px;
  overflow: hidden;
  white-space: nowrap;
  animation: typing 2s steps(40) forwards;
}
@keyframes typing {
  from { width: 0; }
  to { width: 100%; }
}
.hero-title {
  font-family: var(--font-display);
  font-size: clamp(48px, 8vw, 96px);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
}
.hero-title .line {
  display: block;
  overflow: hidden;
}
.hero-title .line > span {
  display: inline-block;
  transform: translateY(100%);
  animation: slideUp 0.8s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}
.hero-title .accent {
  color: var(--accent-green);
}
@keyframes slideUp {
  to { transform: translateY(0); }
}
.hero-subtitle {
  font-size: 18px;
  color: var(--text-secondary);
  max-width: 500px;
  margin-bottom: 32px;
  animation: fadeUp 1s ease-out 0.5s both;
}
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}
.hero-proof {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--accent-amber);
  margin-bottom: 32px;
  animation: fadeUp 1s ease-out 0.7s both;
}
.hero-actions {
  display: flex;
  gap: 16px;
  animation: fadeUp 1s ease-out 0.9s both;
}
.btn {
  display: inline-block;
  padding: 14px 28px;
  font-family: var(--font-mono);
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  text-decoration: none;
  border: 1px solid var(--border-slate);
  border-radius: 4px;
  transition: background 0.3s, color 0.3s, border-color 0.3s;
}
.btn-primary {
  background: var(--accent-green);
  color: var(--bg-deep);
  border-color: var(--accent-green);
}
.btn-primary:hover,
.btn-primary:focus-visible {
  background: transparent;
  color: var(--accent-green);
}
.btn-secondary {
  color: var(--text-primary);
}
.btn-secondary:hover,
.btn-secondary:focus-visible {
  border-color: var(--accent-green);
  color: var(--accent-green);
}
.hero-visual {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 40px;
}
.growth-curve {
  width: 100%;
  max-width: 400px;
  height: auto;
}
.curve-path {
  fill: none;
  stroke: var(--accent-green);
  stroke-width: 2;
  stroke-dasharray: 1000;
  stroke-dashoffset: 1000;
  animation: drawCurve 2s ease-in-out 0.8s forwards;
}
@keyframes drawCurve {
  to { stroke-dashoffset: 0; }
}
.curve-end {
  fill: var(--accent-green);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}
.hero-image-frame {
  border: 1px solid var(--border-slate);
  padding: 8px;
  border-radius: 4px;
}
.hero-image-frame img {
  display: block;
  width: 200px;
  height: 200px;
  object-fit: cover;
  border-radius: 4px;
}
.scroll-indicator {
  position: absolute;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  text-align: center;
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.05em;
}
.scroll-line {
  display: block;
  width: 1px;
  height: 40px;
  background: var(--accent-green);
  margin: 8px auto 0;
  animation: scrollLine 2s infinite;
}
@keyframes scrollLine {
  0% { transform: scaleY(0); transform-origin: top; }
  50% { transform: scaleY(1); transform-origin: top; }
  51% { transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

/* Sections common */
.section-header {
  max-width: var(--container-max);
  margin: 0 auto 60px;
  padding: 0 24px;
}
.section-label {
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.08em;
  color: var(--accent-green);
  margin-bottom: 16px;
}
.section-title {
  font-family: var(--font-display);
  font-size: clamp(32px, 5vw, 64px);
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: -0.02em;
}
.section-title .accent {
  color: var(--accent-green);
}

/* Capabilities */
.capabilities {
  padding: 100px 24px;
}
.capabilities-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  max-width: var(--container-max);
  margin: 0 auto;
}
.capability-card {
  background: var(--bg-carbon);
  border: 1px solid var(--border-slate);
  padding: 32px;
  position: relative;
  transition: border-color 0.3s, transform 0.3s;
}
.capability-card:hover,
.capability-card:focus-within {
  border-color: var(--accent-green);
  transform: translateY(-4px);
}
.capability-card.featured {
  border-left: 3px solid var(--accent-green);
  background: linear-gradient(135deg, var(--bg-carbon), var(--bg-graphite));
}
.card-index {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 16px;
}
.capability-card h3 {
  font-family: var(--font-display);
  font-size: 24px;
  margin-bottom: 12px;
}
.capability-card p {
  color: var(--text-secondary);
  font-size: 16px;
}
.card-annotation {
  display: inline-block;
  margin-top: 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--accent-green);
  border: 1px solid var(--accent-green);
  padding: 4px 8px;
  border-radius: 2px;
}

/* Case Studies */
.case-studies {
  padding: 100px 24px;
  background: var(--bg-carbon);
}
.case-studies-container {
  max-width: var(--container-max);
  margin: 0 auto;
}
.case-selector {
  display: flex;
  gap: 24px;
  margin-bottom: 40px;
  border-bottom: 1px solid var(--border-slate);
  padding-bottom: 16px;
}
.case-tab {
  background: none;
  border: none;
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 8px 0;
  position: relative;
  transition: color 0.3s;
}
.case-tab:hover,
.case-tab:focus-visible {
  color: var(--accent-green);
  outline: none;
}
.case-tab.active {
  color: var(--accent-green);
}
.case-tab.active::after {
  content: '';
  position: absolute;
  bottom: -17px;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--accent-green);
}
.case-panel {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  position: relative;
  padding: 40px 0;
}
.case-panel[hidden] {
  display: none;
}
.case-number {
  position: absolute;
  top: -40px;
  right: 0;
  font-family: var(--font-display);
  font-size: 200px;
  font-weight: 700;
  color: rgba(255,255,255,0.03);
  line-height: 1;
  pointer-events: none;
}
.case-narrative h3 {
  font-family: var(--font-display);
  font-size: 32px;
  margin-bottom: 24px;
}
.case-block {
  margin-bottom: 24px;
}
.case-block h4 {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--accent-green);
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.case-block p {
  color: var(--text-secondary);
}
.case-data ul {
  list-style: none;
  padding: 0;
}
.case-data li {
  color: var(--text-secondary);
  padding: 4px 0;
  border-bottom: 1px solid var(--border-slate);
}
.metrics {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
}
.metric {
  background: var(--bg-deep);
  border: 1px solid var(--border-slate);
  padding: 16px;
  text-align: center;
  flex: 1;
  min-width: 120px;
}
.metric-value {
  display: block;
  font-family: var(--font-mono);
  font-size: 32px;
  color: var(--accent-green);
  font-weight: 500;
}
.metric-label {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Technical Stack */
.technical-stack {
  padding: 100px 24px;
}
.terminal-window {
  max-width: 800px;
  margin: 0 auto;
  background: var(--bg-carbon);
  border: 1px solid var(--border-slate);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 20px 40px rgba(0,0,0,0.3);
}
.terminal-header {
  background: var(--bg-graphite);
  padding: 12px 16px;
  display: flex;
  align-items: center;
  gap: 8px;
  border-bottom: 1px solid var(--border-slate);
}
.terminal-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--border-slate);
}
.terminal-dot:first-child {
  background: #FF5F56;
}
.terminal-dot:nth-child(2) {
  background: #FFBD2E;
}
.terminal-dot:nth-child(3) {
  background: #27C93F;
}
.terminal-title {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--text-secondary);
  margin-left: 8px;
}
.terminal-body {
  padding: 24px;
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.8;
}
.terminal-line {
  color: var(--text-primary);
}
.prompt {
  color: var(--accent-green);
  margin-right: 8px;
}
.terminal-columns {
  display: flex;
  gap: 40px;
  margin: 16px 0;
}
.terminal-col {
  flex: 1;
}
.terminal-dir {
  color: var(--accent-amber);
  font-weight: 600;
  margin-bottom: 8px;
}
.terminal-list {
  list-style: none;
  padding: 0;
}
.terminal-list li {
  color: var(--text-secondary);
  padding: 2px 0;
  transition: color 0.3s;
}
.terminal-list li:hover {
  color: var(--accent-green);
}
.terminal-output {
  color: var(--accent-green);
  margin-top: 8px;
}

/* Process */
.process {
  padding: 100px 24px;
  background: var(--bg-carbon);
}
.process-timeline {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  max-width: var(--container-max);
  margin: 0 auto;
  position: relative;
}
.process-timeline::before {
  content: '';
  position: absolute;
  top: 20px;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--border-slate);
}
.process-step {
  flex: 1;
  text-align: center;
  position: relative;
  padding-top: 40px;
}
.step-number {
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 40px;
  height: 40px;
  background: var(--bg-deep);
  border: 2px solid var(--accent-green);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--accent-green);
  z-index: 1;
}
.process-step h3 {
  font-family: var(--font-display);
  font-size: 24px;
  margin-bottom: 8px;
}
.process-step p {
  color: var(--text-secondary);
  font-size: 14px;
}
.step-deliverable {
  display: block;
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--accent-amber);
}

/* About */
.about {
  padding: 100px 24px;
}
.about-content {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 60px;
  max-width: var(--container-max);
  margin: 0 auto;
  align-items: center;
}
.about-text p {
  color: var(--text-secondary);
  font-size: 18px;
  margin-bottom: 16px;
}
.quick-facts {
  margin-top: 32px;
  border-top: 1px solid var(--border-slate);
  padding-top: 24px;
}
.fact {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--text-primary);
  margin-bottom: 8px;
}
.fact-label {
  color: var(--accent-green);
}
.about-image-frame {
  border: 1px solid var(--border-slate);
  padding: 12px;
  position: relative;
}
.about-image-frame::after {
  content: '';
  position: absolute;
  top: -1px;
  right: -1px;
  width: 20px;
  height: 20px;
  border-top: 3px solid var(--accent-green);
  border-right: 3px solid var(--accent-green);
}
.about-image-frame img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* Contact */
.contact {
  padding: 100px 24px;
  background: var(--bg-carbon);
}
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  max-width: var(--container-max);
  margin: 0 auto;
}
.contact-form-wrap .section-title {
  margin-bottom: 40px;
}
.form-group {
  margin-bottom: 24px;
}
.form-group label {
  display: block;
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px 0;
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--border-slate);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 16px;
  transition: border-color 0.3s;
}
.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-bottom-color: var(--accent-green);
}
#button-contact-form {
  background: var(--accent-green);
  color: var(--bg-deep);
  border: none;
  padding: 14px 32px;
  font-family: var(--font-mono);
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  cursor: pointer;
  transition: background 0.3s, color 0.3s;
  border-radius: 4px;
}
#button-contact-form:hover,
#button-contact-form:focus-visible {
  background: transparent;
  color: var(--accent-green);
  border: 1px solid var(--accent-green);
}
.contact-info {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 32px;
}
.contact-method h3 {
  font-family: var(--font-display);
  font-size: 24px;
  margin-bottom: 8px;
}
.contact-method a {
  color: var(--accent-green);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s;
}
.contact-method a:hover {
  border-bottom-color: var(--accent-green);
}
.contact-annotation {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--accent-amber);
}

/* Footer */
.site-footer {
  background: var(--bg-deep);
  border-top: 1px solid var(--border-slate);
  padding: 40px 24px;
  text-align: center;
}
.footer-inner {
  max-width: var(--container-max);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}
.footer-inner p {
  color: var(--text-secondary);
  font-size: 14px;
}
.footer-tagline {
  font-family: var(--font-mono);
}

/* Responsive */
@media (max-width: 1024px) {
  .capabilities-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .process-timeline {
    flex-direction: column;
    align-items: center;
  }
  .process-timeline::before {
    width: 2px;
    height: 100%;
    left: 20px;
    top: 0;
  }
  .process-step {
    text-align: left;
    padding-left: 60px;
    padding-top: 0;
    width: 100%;
  }
  .step-number {
    left: 0;
    transform: none;
  }
}

@media (max-width: 768px) {
  .nav-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background: var(--bg-deep);
    flex-direction: column;
    padding: 24px;
    gap: 16px;
    border-bottom: 1px solid var(--border-slate);
  }
  .nav-menu.open {
    display: flex;
  }
  .nav-toggle {
    display: block;
  }
  .hero-content {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .hero-visual {
    order: -1;
  }
  .hero-image-frame {
    display: none;
  }
  .case-panel {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .terminal-columns {
    flex-direction: column;
    gap: 16px;
  }
  .about-content {
    grid-template-columns: 1fr;
  }
  .contact-grid {
    grid-template-columns: 1fr;
  }
  .footer-inner {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 40px;
  }
  .hero-actions {
    flex-direction: column;
  }
  .btn {
    width: 100%;
    text-align: center;
  }
  .capabilities-grid {
    grid-template-columns: 1fr;
  }
  .case-selector {
    flex-direction: column;
    gap: 8px;
  }
  .metrics {
    flex-direction: column;
  }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .hero-meta {
    animation: none;
    white-space: normal;
  }
  .hero-title .line > span {
    animation: none;
    transform: none;
  }
  .curve-path {
    stroke-dashoffset: 0;
    animation: none;
  }
  .scroll-line {
    animation: none;
  }
}
button:not(:disabled),[role="button"]{cursor:pointer}button:disabled{cursor:not-allowed}