/* ========================================
   SYNAPSE - AI Experience Website
   Base Styles & Dark Nebula Aesthetic
   ======================================== */

/* CSS Custom Properties */
:root {
  --void-black: #050508;
  --deep-space: #0a0a12;
  --nebula-purple: #6b21a8;
  --aurora-cyan: #06b6d4;
  --neon-accent: #00f0ff;
  --glass-bg: rgba(255, 255, 255, 0.03);
  --glass-border: rgba(255, 255, 255, 0.08);
  --text-primary: #f0f0f5;
  --text-secondary: #a0a0b0;
  --text-muted: #606070;
  --font-display: 'Space Grotesk', 'Inter', system-ui, sans-serif;
  --font-body: 'Inter', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  --transition-smooth: cubic-bezier(0.16, 1, 0.3, 1);
  --glow-purple: 0 0 30px rgba(107, 33, 168, 0.4);
  --glow-cyan: 0 0 30px rgba(6, 182, 212, 0.4);
}

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

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

html.lenis, html.lenis body {
  height: auto;
}

.lenis.lenis-smooth {
  scroll-behavior: auto !important;
}

.lenis.lenis-smooth [data-lenis-prevent] {
  overscroll-behavior: contain;
}

.lenis.lenis-stopped {
  overflow: hidden;
}

.lenis.lenis-smooth iframe {
  pointer-events: none;
}

body {
  font-family: var(--font-body);
  background-color: var(--void-black);
  color: var(--text-primary);
  overflow-x: hidden;
  cursor: none;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

::selection {
  background: rgba(107, 33, 168, 0.4);
  color: var(--text-primary);
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: var(--void-black);
}

::-webkit-scrollbar-thumb {
  background: var(--nebula-purple);
  border-radius: 3px;
}

/* ========================================
   CUSTOM CURSOR
   ======================================== */
.cursor {
  width: 12px;
  height: 12px;
  background: var(--neon-accent);
  border-radius: 50%;
  position: fixed;
  pointer-events: none;
  z-index: 99999;
  mix-blend-mode: difference;
  transition: transform 0.15s var(--transition-smooth), width 0.3s, height 0.3s;
  transform: translate(-50%, -50%);
}

.cursor.hover {
  width: 48px;
  height: 48px;
  background: rgba(0, 240, 255, 0.1);
  border: 1px solid var(--neon-accent);
  mix-blend-mode: normal;
}

.cursor-trail {
  width: 6px;
  height: 6px;
  background: var(--aurora-cyan);
  border-radius: 50%;
  position: fixed;
  pointer-events: none;
  z-index: 99998;
  opacity: 0.6;
  transform: translate(-50%, -50%);
  transition: opacity 0.3s;
}

@media (pointer: coarse) {
  .cursor, .cursor-trail {
    display: none;
  }
  body {
    cursor: auto;
  }
}

/* ========================================
   NAVIGATION
   ======================================== */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: 1.5rem 3rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background 0.5s var(--transition-smooth), backdrop-filter 0.5s;
}

.nav.scrolled {
  background: rgba(5, 5, 8, 0.8);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--glass-border);
}

.nav-logo {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.nav-logo::before {
  content: '◆';
  color: var(--neon-accent);
  font-size: 1.2rem;
  animation: logoPulse 3s ease-in-out infinite;
}

@keyframes logoPulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.7; transform: scale(1.1); }
}

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

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  position: relative;
  padding: 0.25rem 0;
  transition: color 0.3s var(--transition-smooth);
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--neon-accent);
  transition: width 0.4s var(--transition-smooth);
}

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

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

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

/* Mobile Nav */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: none;
  padding: 5px;
}

.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  transition: all 0.3s var(--transition-smooth);
}

@media (max-width: 768px) {
  .nav {
    padding: 1rem 1.5rem;
  }
  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 70%;
    height: 100vh;
    background: var(--deep-space);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2rem;
    transition: right 0.5s var(--transition-smooth);
    border-left: 1px solid var(--glass-border);
  }
  .nav-links.open {
    right: 0;
  }
  .nav-toggle {
    display: flex;
    z-index: 1001;
  }
}

/* ========================================
   PAGE TRANSITIONS
   ======================================== */
.page-transition {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 9999;
  pointer-events: none;
  display: flex;
  flex-direction: column;
}

.page-transition .bar {
  flex: 1;
  background: var(--deep-space);
  transform: scaleY(0);
  transform-origin: top;
  border-bottom: 1px solid var(--glass-border);
}

.page-transition.active .bar {
  animation: transitionIn 0.6s var(--transition-smooth) forwards;
}

.page-transition.exit .bar {
  animation: transitionOut 0.6s var(--transition-smooth) forwards;
}

@keyframes transitionIn {
  from { transform: scaleY(0); }
  to { transform: scaleY(1); }
}

@keyframes transitionOut {
  from { transform: scaleY(1); transform-origin: bottom; }
  to { transform: scaleY(0); transform-origin: bottom; }
}

.page-transition .glitch-text {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-family: var(--font-mono);
  font-size: 1.5rem;
  color: var(--neon-accent);
  opacity: 0;
  white-space: nowrap;
  letter-spacing: 0.2em;
}

.page-transition.active .glitch-text {
  animation: glitchFade 0.4s 0.3s forwards;
}

@keyframes glitchFade {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* ========================================
   GLASSMORPHISM UTILITIES
   ======================================== */
.glass {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: 1rem;
}

.glass-strong {
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(40px);
  -webkit-backdrop-filter: blur(40px);
  border: 1px solid var(--glass-border);
  border-radius: 1.5rem;
}

/* ========================================
   TYPOGRAPHY
   ======================================== */
.display-h1 {
  font-family: var(--font-display);
  font-size: clamp(3rem, 8vw, 7rem);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.04em;
  color: var(--text-primary);
}

.display-h2 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 4rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.03em;
  color: var(--text-primary);
}

.display-h3 {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3vw, 2.5rem);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

.body-text {
  font-family: var(--font-body);
  font-size: 1.125rem;
  line-height: 1.7;
  color: var(--text-secondary);
  max-width: 600px;
}

.mono-text {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  color: var(--text-muted);
  letter-spacing: 0.05em;
}

.text-gradient {
  background: linear-gradient(135deg, var(--neon-accent), var(--nebula-purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ========================================
   BUTTONS
   ======================================== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem 2rem;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  text-decoration: none;
  border-radius: 100px;
  border: 1px solid var(--glass-border);
  background: var(--glass-bg);
  color: var(--text-primary);
  transition: all 0.4s var(--transition-smooth);
  position: relative;
  overflow: hidden;
  cursor: none;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.1), transparent);
  transition: left 0.6s var(--transition-smooth);
}

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

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

.btn-primary {
  background: linear-gradient(135deg, var(--nebula-purple), #4c1d95);
  border: none;
}

.btn-primary:hover {
  box-shadow: var(--glow-purple);
}

.btn-glow {
  border-color: var(--neon-accent);
  color: var(--neon-accent);
}

.btn-glow:hover {
  background: rgba(0, 240, 255, 0.1);
  box-shadow: var(--glow-cyan);
}

/* ========================================
   FOOTER & MARQUEE
   ======================================== */
.footer {
  padding: 4rem 3rem 2rem;
  border-top: 1px solid var(--glass-border);
  background: var(--deep-space);
  position: relative;
  overflow: hidden;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 3rem;
  max-width: 1400px;
  margin: 0 auto 4rem;
}

.footer-brand .logo {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 1rem;
}

.footer-brand p {
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.6;
}

.footer-links h4 {
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 1.5rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

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

.footer-links li {
  margin-bottom: 0.75rem;
}

.footer-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.3s;
}

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

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 2rem;
  border-top: 1px solid var(--glass-border);
  max-width: 1400px;
  margin: 0 auto;
}

.footer-bottom p {
  color: var(--text-muted);
  font-size: 0.85rem;
}

/* Marquee */
.marquee-container {
  overflow: hidden;
  white-space: nowrap;
  padding: 1.5rem 0;
  border-top: 1px solid var(--glass-border);
  border-bottom: 1px solid var(--glass-border);
  margin-bottom: 3rem;
}

.marquee {
  display: inline-flex;
  animation: marqueeScroll 30s linear infinite;
}

.marquee-item {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3.5rem);
  font-weight: 700;
  color: transparent;
  -webkit-text-stroke: 1px var(--glass-border);
  padding: 0 2rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.marquee-item:nth-child(even) {
  -webkit-text-stroke: 1px var(--nebula-purple);
  opacity: 0.5;
}

@keyframes marqueeScroll {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* ========================================
   ANIMATION UTILITIES
   ======================================== */
.reveal {
  opacity: 0;
  transform: translateY(40px);
}

.reveal-left {
  opacity: 0;
  transform: translateX(-60px);
}

.reveal-right {
  opacity: 0;
  transform: translateX(60px);
}

.reveal-scale {
  opacity: 0;
  transform: scale(0.9);
}

/* Scan line effect */
.scan-lines {
  position: relative;
}

.scan-lines::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    rgba(0, 240, 255, 0.03) 2px,
    rgba(0, 240, 255, 0.03) 4px
  );
  pointer-events: none;
  z-index: 1;
}

/* Glow effects */
.glow-purple {
  box-shadow: var(--glow-purple);
}

.glow-cyan {
  box-shadow: var(--glow-cyan);
}

/* Grid pattern overlay */
.grid-pattern {
  position: relative;
}

.grid-pattern::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: 
    linear-gradient(rgba(107, 33, 168, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(107, 33, 168, 0.05) 1px, transparent 1px);
  background-size: 50px 50px;
  pointer-events: none;
}

/* ========================================
   SECTION BASE STYLES
   ======================================== */
section {
  position: relative;
  padding: 8rem 3rem;
  max-width: 1400px;
  margin: 0 auto;
}

@media (max-width: 768px) {
  section {
    padding: 5rem 1.5rem;
  }
  .display-h1 {
    font-size: clamp(2.5rem, 10vw, 4rem);
  }
}

/* ========================================
   LOADING SCREEN
   ======================================== */
.loading-screen {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--void-black);
  z-index: 99999;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  transition: opacity 0.8s var(--transition-smooth), visibility 0.8s;
}

.loading-screen.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.loading-logo {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  margin-bottom: 2rem;
}

.loading-bar {
  width: 200px;
  height: 2px;
  background: var(--glass-border);
  border-radius: 1px;
  overflow: hidden;
}

.loading-bar-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--nebula-purple), var(--neon-accent));
  transition: width 0.3s var(--transition-smooth);
}

.loading-percent {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-top: 1rem;
}