/* ==========================================================================
   DESIGN SYSTEM & VARIABLES - Vectori Labs Portfolio
   ========================================================================== */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Space+Grotesk:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500;700&display=swap');

:root {
  --bg-primary: #050608;
  --bg-secondary: #0c0f12;
  --bg-tertiary: #13171d;
  --bg-glass: rgba(12, 15, 18, 0.7);
  --bg-glass-hover: rgba(20, 25, 32, 0.85);

  --accent-cyan: #00e5ff;
  --accent-cyan-rgb: 0, 229, 255;
  --accent-green: #00ff88;
  --accent-green-rgb: 0, 255, 136;
  --accent-orange: #ff9f1c;
  --accent-orange-rgb: 255, 159, 28;
  --accent-purple: #bd93f9;

  --text-primary: #f0f4f8;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --border-color: rgba(255, 255, 255, 0.08);
  --border-glow: rgba(0, 229, 255, 0.15);
  --border-glow-hover: rgba(0, 229, 255, 0.4);

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-tech: 'Space Grotesk', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ==========================================================================
   RESET & BASE STYLES
   ========================================================================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  min-height: 100vh;
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
}

body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: 
    radial-gradient(circle at 10% 20%, rgba(0, 229, 255, 0.03) 0%, transparent 40%),
    radial-gradient(circle at 80% 80%, rgba(0, 255, 136, 0.02) 0%, transparent 40%),
    linear-gradient(rgba(255, 255, 255, 0.003) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.003) 1px, transparent 1px);
  background-size: 100% 100%, 100% 100%, 40px 40px, 40px 40px;
  z-index: -2;
  pointer-events: none;
}

a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition-fast);
}

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

button, input, textarea {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
  background: transparent;
  border: none;
}

button {
  cursor: pointer;
}

/* ==========================================================================
   TYPOGRAPHY
   ========================================================================== */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-tech);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

h1 {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  margin-bottom: 1.5rem;
}

h2 {
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  margin-bottom: 2rem;
  position: relative;
  display: inline-block;
}

h2::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -8px;
  width: 40px;
  height: 2px;
  background: var(--accent-cyan);
  box-shadow: 0 0 8px var(--accent-cyan);
}

h3 {
  font-size: clamp(1.3rem, 2.5vw, 1.8rem);
  margin-bottom: 1rem;
}

p {
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  font-weight: 300;
  font-size: 1.05rem;
}

.mono {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--accent-cyan);
}

.gradient-text {
  background: linear-gradient(135deg, var(--text-primary) 30%, var(--accent-cyan) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.gradient-text-alt {
  background: linear-gradient(135deg, var(--accent-cyan) 0%, var(--accent-green) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ==========================================================================
   LAYOUT CONTAINERS
   ========================================================================== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
  width: 100%;
}

.section {
  padding: 8rem 0;
  position: relative;
}

.section-alt {
  background-color: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

/* ==========================================================================
   NAVIGATION
   ========================================================================== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  border-bottom: 1px solid var(--border-color);
  background-color: var(--bg-glass);
  backdrop-filter: blur(12px);
  transition: var(--transition-normal);
}

.header-scrolled {
  background-color: rgba(5, 6, 8, 0.9);
  padding: 0.5rem 0;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
  border-bottom: 1px solid rgba(0, 229, 255, 0.1);
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 80px;
}

.logo {
  font-family: var(--font-tech);
  font-size: 1.5rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-primary);
}

.logo span {
  color: var(--accent-cyan);
  text-shadow: 0 0 10px rgba(0, 229, 255, 0.5);
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 2.5rem;
  align-items: center;
}

.nav-links a {
  font-family: var(--font-tech);
  font-size: 0.95rem;
  font-weight: 500;
  letter-spacing: 0.03em;
  color: var(--text-secondary);
  position: relative;
  padding: 0.5rem 0;
}

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

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--accent-cyan);
  box-shadow: 0 0 8px var(--accent-cyan);
  transition: var(--transition-normal);
}

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  width: 30px;
  height: 24px;
  justify-content: center;
  background: transparent;
  cursor: pointer;
  z-index: 101;
}

.nav-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--text-primary);
  transition: var(--transition-normal);
}

/* Mobile Nav Active */
.nav-active .nav-links {
  transform: translateX(0);
}

.nav-active .nav-toggle span:nth-child(1) {
  transform: rotate(45deg) translate(6px, 6px);
}

.nav-active .nav-toggle span:nth-child(2) {
  opacity: 0;
}

.nav-active .nav-toggle span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -6px);
}

/* ==========================================================================
   BUTTONS
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  padding: 0.8rem 2rem;
  font-family: var(--font-tech);
  font-weight: 600;
  font-size: 0.95rem;
  border-radius: 4px;
  transition: var(--transition-normal);
  position: relative;
  overflow: hidden;
  letter-spacing: 0.02em;
}

.btn-primary {
  background-color: var(--accent-cyan);
  color: var(--bg-primary);
  box-shadow: 0 4px 20px rgba(0, 229, 255, 0.25);
  border: 1px solid var(--accent-cyan);
}

.btn-primary:hover {
  background-color: transparent;
  color: var(--accent-cyan);
  box-shadow: 0 4px 30px rgba(0, 229, 255, 0.4);
}

.btn-secondary {
  border: 1px solid var(--border-color);
  background-color: rgba(255, 255, 255, 0.02);
  color: var(--text-primary);
  backdrop-filter: blur(5px);
}

.btn-secondary:hover {
  border-color: var(--accent-cyan);
  background-color: rgba(0, 229, 255, 0.04);
  box-shadow: 0 0 15px rgba(0, 229, 255, 0.1);
  color: var(--accent-cyan);
}

.btn-accent {
  background-color: var(--accent-green);
  color: var(--bg-primary);
  box-shadow: 0 4px 20px rgba(0, 255, 136, 0.25);
  border: 1px solid var(--accent-green);
}

.btn-accent:hover {
  background-color: transparent;
  color: var(--accent-green);
  box-shadow: 0 4px 30px rgba(0, 255, 136, 0.4);
}

/* ==========================================================================
   CARDS & CONTAINERS
   ========================================================================== */
.card {
  background-color: var(--bg-glass);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 2.5rem;
  backdrop-filter: blur(12px);
  transition: var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent-cyan), transparent);
  transform: translateX(-100%);
  transition: 0.7s ease-in-out;
}

.card:hover::before {
  transform: translateX(100%);
}

.card:hover {
  border-color: var(--border-glow-hover);
  transform: translateY(-5px);
  box-shadow: 0 15px 35px rgba(0, 229, 255, 0.05);
}

/* Tech Specs List */
.tech-specs {
  list-style: none;
  margin-top: 1.5rem;
}

.tech-specs li {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.5rem;
}

.tech-specs li::before {
  content: '>';
  color: var(--accent-cyan);
  font-weight: bold;
}

/* ==========================================================================
   PROJECT HIGHLIGHT CARDS (HOME HUB)
   ========================================================================== */
.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.project-card {
  display: flex;
  flex-direction: column;
  height: 100%;
}

.project-badge {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 0.25rem 0.75rem;
  border-radius: 30px;
  border: 1px solid rgba(var(--accent-cyan-rgb), 0.3);
  color: var(--accent-cyan);
  background-color: rgba(var(--accent-cyan-rgb), 0.05);
}

.project-badge.main-project {
  border-color: rgba(var(--accent-green-rgb), 0.3);
  color: var(--accent-green);
  background-color: rgba(var(--accent-green-rgb), 0.05);
}

.project-card h3 {
  margin-top: 1rem;
}

.project-card p {
  flex-grow: 1;
}

.project-card-footer {
  margin-top: 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* ==========================================================================
   HERO BANNER
   ========================================================================== */
.hero-sec {
  height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--border-color);
  background: radial-gradient(circle at center, transparent 0%, var(--bg-primary) 90%);
}

.hero-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
}

.hero-content {
  max-width: 750px;
  position: relative;
  z-index: 2;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--accent-cyan);
  border: 1px solid var(--border-glow);
  padding: 0.4rem 1rem;
  border-radius: 30px;
  background-color: rgba(0, 229, 255, 0.04);
  margin-bottom: 2rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.hero-tag .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--accent-cyan);
  box-shadow: 0 0 8px var(--accent-cyan);
  animation: pulse 2s infinite;
}

.hero-tag.main-project-tag {
  color: var(--accent-green);
  border-color: rgba(0, 255, 136, 0.2);
  background-color: rgba(0, 255, 136, 0.04);
}
.hero-tag.main-project-tag .dot {
  background-color: var(--accent-green);
  box-shadow: 0 0 8px var(--accent-green);
}

.hero-cta {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
  margin-top: 2rem;
}

/* ==========================================================================
   ABOUT PAGE DETAILS
   ========================================================================== */
.about-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 4rem;
  align-items: start;
}

.lab-specs {
  border-left: 2px solid rgba(0, 229, 255, 0.2);
  padding-left: 2rem;
  margin-left: 0.5rem;
}

.lab-spec-item {
  margin-bottom: 2.5rem;
}

.lab-spec-item h4 {
  font-family: var(--font-tech);
  color: var(--text-primary);
  font-size: 1.15rem;
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.lab-spec-item h4 i {
  color: var(--accent-cyan);
}

/* Skills list layout */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
  margin-top: 2rem;
}

.skill-category {
  background: rgba(255, 255, 255, 0.01);
  border: 1px solid var(--border-color);
  padding: 1.5rem;
  border-radius: 6px;
}

.skill-category h4 {
  font-size: 1.05rem;
  color: var(--accent-cyan);
  margin-bottom: 1rem;
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.skill-tag {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  background-color: rgba(255, 255, 255, 0.04);
  color: var(--text-secondary);
  padding: 0.25rem 0.6rem;
  border-radius: 4px;
  border: 1px solid var(--border-color);
  transition: var(--transition-fast);
}

.skill-tag:hover {
  border-color: var(--accent-cyan);
  color: var(--text-primary);
  background-color: rgba(0, 229, 255, 0.05);
}

/* ==========================================================================
   INTERACTIVE SIMULATORS
   ========================================================================== */
.simulator-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  margin-top: 4rem;
  align-items: center;
}

@media (max-width: 968px) {
  .simulator-container {
    grid-template-columns: 1fr;
  }
}

.sim-interface {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-glow);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.6);
  position: relative;
}

.sim-header {
  background-color: var(--bg-tertiary);
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.sim-status {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent-green);
}

.sim-status .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--accent-green);
  animation: pulse 1.5s infinite;
}

.sim-controls {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.sim-screen {
  position: relative;
  background-color: #030405;
  width: 100%;
  aspect-ratio: 16/10;
  display: flex;
  align-items: center;
  justify-content: center;
  border-top: 1px solid var(--border-color);
}

/* Interactive Canvas sizing */
.sim-canvas {
  width: 100%;
  height: 100%;
  display: block;
}

/* Controls style */
.btn-group {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem;
}

.control-btn {
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 0.75rem 1rem;
  font-family: var(--font-tech);
  font-weight: 500;
  border-radius: 4px;
  text-align: center;
  transition: var(--transition-fast);
}

.control-btn:hover {
  background-color: rgba(255, 255, 255, 0.02);
  border-color: var(--text-secondary);
  color: var(--text-primary);
}

.control-btn.active {
  background-color: rgba(0, 229, 255, 0.05);
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
  box-shadow: 0 0 15px rgba(0, 229, 255, 0.1);
}

.control-btn.active-green {
  background-color: rgba(0, 255, 136, 0.05);
  border-color: var(--accent-green);
  color: var(--accent-green);
  box-shadow: 0 0 15px rgba(0, 255, 136, 0.1);
}

/* Range input slider styling */
.slider-control {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.slider-labels {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.range-input {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 4px;
  background: var(--bg-tertiary);
  border-radius: 2px;
  outline: none;
  border: 1px solid var(--border-color);
}

.range-input::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--accent-cyan);
  box-shadow: 0 0 8px var(--accent-cyan);
  cursor: pointer;
  transition: var(--transition-fast);
}

.range-input::-webkit-slider-thumb:hover {
  transform: scale(1.2);
}

/* Card simulation elements */
.card-grid-sim {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
  padding: 1.5rem;
}

.card-item-sim {
  aspect-ratio: 2.5/3.5;
  border: 1px dashed rgba(255, 255, 255, 0.15);
  background-color: var(--bg-tertiary);
  border-radius: 6px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.card-item-sim:hover {
  border-style: solid;
  border-color: var(--accent-cyan);
  transform: translateY(-3px);
  box-shadow: 0 5px 15px rgba(0, 229, 255, 0.1);
}

.card-item-sim.active {
  border-style: solid;
  border-color: var(--accent-cyan);
  background-color: rgba(0, 229, 255, 0.03);
}

.card-val {
  font-family: var(--font-tech);
  font-size: 1.5rem;
  font-weight: 700;
}

.card-suit {
  font-size: 1.8rem;
  margin-top: 0.25rem;
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.footer {
  background-color: var(--bg-primary);
  border-top: 1px solid var(--border-color);
  padding: 4rem 0 2rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1.2fr;
  gap: 4rem;
  margin-bottom: 3rem;
}

@media (max-width: 768px) {
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
}

.footer-brand p {
  margin-top: 1rem;
  max-width: 320px;
}

.footer-title {
  font-family: var(--font-tech);
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  color: var(--text-primary);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 0.8rem;
}

.footer-links a {
  color: var(--text-secondary);
}

.footer-links a:hover {
  color: var(--accent-cyan);
  padding-left: 4px;
}

.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding-top: 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  color: var(--text-muted);
  font-size: 0.85rem;
}

/* ==========================================================================
   WAITLIST FORM / NEWSLETTER
   ========================================================================== */
.waitlist-sec {
  background: linear-gradient(180deg, var(--bg-secondary), var(--bg-primary));
  border-top: 1px solid var(--border-color);
  position: relative;
}

.waitlist-container {
  max-width: 600px;
  margin: 0 auto;
  text-align: center;
}

.waitlist-form {
  margin-top: 2.5rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.form-group {
  position: relative;
  display: flex;
}

.form-input {
  width: 100%;
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 4px;
  padding: 1rem 1.5rem;
  font-family: var(--font-sans);
  font-weight: 300;
  outline: none;
  transition: var(--transition-normal);
}

.form-input:focus {
  border-color: var(--accent-cyan);
  box-shadow: 0 0 15px rgba(0, 229, 255, 0.1);
}

.form-submit-btn {
  position: absolute;
  right: 6px;
  top: 6px;
  bottom: 6px;
  background-color: var(--accent-cyan);
  color: var(--bg-primary);
  font-family: var(--font-tech);
  font-weight: 600;
  padding: 0 1.5rem;
  border-radius: 3px;
  transition: var(--transition-fast);
}

.form-submit-btn:hover {
  background-color: var(--text-primary);
  box-shadow: 0 0 10px rgba(255, 255, 255, 0.2);
}

@media (max-width: 600px) {
  .form-group {
    flex-direction: column;
    gap: 1rem;
  }
  .form-submit-btn {
    position: static;
    padding: 1rem;
    width: 100%;
  }
}

.form-message {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  margin-top: 0.75rem;
  opacity: 0;
  transition: var(--transition-normal);
}

.form-message.success {
  color: var(--accent-green);
  opacity: 1;
}

.form-message.error {
  color: var(--accent-orange);
  opacity: 1;
}

/* ==========================================================================
   ANIMATIONS & KEYFRAMES
   ========================================================================== */
@keyframes pulse {
  0% {
    box-shadow: 0 0 0 0 rgba(var(--accent-cyan-rgb), 0.4);
  }
  70% {
    box-shadow: 0 0 0 8px rgba(var(--accent-cyan-rgb), 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(var(--accent-cyan-rgb), 0);
  }
}

/* Mobile responsive fixes */
@media (max-width: 768px) {
  .nav-links {
    position: fixed;
    top: 80px;
    left: 0;
    width: 100%;
    height: calc(100vh - 80px);
    background-color: rgba(5, 6, 8, 0.98);
    flex-direction: column;
    padding: 4rem 2rem;
    gap: 2rem;
    transform: translateX(100%);
    transition: var(--transition-normal);
    border-top: 1px solid var(--border-color);
  }
  
  .nav-toggle {
    display: flex;
  }
  
  .about-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
}