/* 
  Blinkfileventures - Core Stylesheet
  Focus: Modern Dark, Storytelling Flow, Deep Teal Brand Match.
*/

:root {
  /* Colors - Now using rgba for glassmorphism over the Three.js canvas */
  --bg-primary: transparent;       /* Body is transparent to show the canvas */
  --bg-solid: #0a0a0c;             /* Grounding footer background */
  
  --bg-secondary: rgba(18, 18, 21, 0.65); /* Translucent cards/sections */
  --bg-tertiary: rgba(26, 26, 30, 0.8);   /* Borders/overlays */
  
  /* Brand Accents - 'Matching the Vibe' */
  --accent-color: #5eead4;     /* Crisp technical mint */
  --accent-deep: #0D3E3F;      /* Deep luxurious teal for large blocks */
  --accent-muted: rgba(94, 234, 212, 0.15);

  --text-primary: #ededf0;     /* Off-white */
  --text-secondary: #a1a1aa;   /* Muted grey */
  --text-muted: #52525b;       /* Very muted grey for rules/borders */
  
  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;

  /* Spacing & Layout */
  --nav-height: 80px;
  --container-width: 1200px;
  --radius-sm: 4px;            
  --radius-md: 8px;
  --radius-lg: 32px;           /* Large radius for storytelling blocks */
  
  /* Transitions */
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 0.8s cubic-bezier(0.22, 1, 0.36, 1);
}

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

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

body.dark-theme {
  background-color: var(--bg-primary); 
  color: var(--text-primary);
  font-family: var(--font-sans);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* ThreeJS Canvas */
#bg-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: -1;
  pointer-events: none;
}

/* Typography elements */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

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

.text-accent {
  color: var(--accent-color);
}

.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 2rem;
}

.section-padding {
  padding: 8rem 0;
}

/* === Navigation === */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  z-index: 1000;
  background-color: rgba(10, 10, 12, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition-fast);
}

.navbar.scrolled {
  border-bottom: 1px solid var(--bg-tertiary);
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 2rem;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.brand-text {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 1.35rem;
  letter-spacing: -0.04em;
  color: var(--text-primary);
  display: flex;
  align-items: baseline;
}

.brand-light {
  font-weight: 400;
  color: var(--text-secondary);
}

.brand-dot {
  color: var(--accent-color);
  font-weight: 700;
  margin-left: 2px;
}

.logo-img {
  width: 32px;
  height: 32px;
  object-fit: contain;
  border-radius: 4px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2.5rem;
}
.nav-links a:not(.btn-primary-outline) {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
}
.nav-links a:not(.btn-primary-outline):hover {
  color: var(--text-primary);
}

/* Base Nav Toggle Styles */
.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  flex-direction: column;
  gap: 6px;
  z-index: 1001; 
}

.mobile-menu-btn .bar {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--text-primary);
  transition: transform var(--transition-fast);
}

/* Mobile Nav Overlay */
.mobile-nav-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  background-color: var(--bg-solid);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 2rem;
  z-index: 999;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-fast);
}

.mobile-nav-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.mobile-link {
  font-size: 2rem;
  font-weight: 600;
}

/* === Buttons === */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.8rem 1.75rem;
  background-color: var(--text-primary);
  color: var(--bg-solid);
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.95rem;
  transition: transform var(--transition-fast), background-color var(--transition-fast);
}

.btn-primary:hover {
  background-color: #fff;
  transform: translateY(-2px);
}

.btn-primary-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.5rem 1.25rem;
  border: 1px solid var(--text-muted);
  color: var(--text-primary);
  border-radius: var(--radius-sm);
  font-weight: 500;
  font-size: 0.9rem;
  transition: border-color var(--transition-fast), color var(--transition-fast);
}

.btn-primary-outline:hover {
  border-color: var(--accent-color);
  color: var(--accent-color);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.8rem 1.75rem;
  background-color: transparent;
  color: var(--text-primary);
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid var(--text-muted);
  transition: border-color var(--transition-fast), background-color var(--transition-fast);
}

.btn-secondary:hover {
  border-color: var(--text-secondary);
  background-color: var(--bg-tertiary);
}

/* ==================================
   Storytelling Scroll Flow specific 
   ================================== */

.story-flow {
  display: flex;
  flex-direction: column;
}

.story-section {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  position: relative;
  padding: var(--nav-height) 0 4rem 0;
}

.story-section.flex-center {
  align-items: center;
}

.story-content {
  position: relative;
  z-index: 2;
  max-width: 800px;
}

.text-center {
  text-align: center;
}

.story-content.text-center {
  margin-left: auto;
  margin-right: auto;
}

.story-content.right-align {
  margin-left: auto;
  margin-right: 0;
  text-align: right;
}

.offset-content {
  padding-top: 8rem; /* slight offset for pacing */
}

/* Story Typography */
.section-tag {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--accent-color);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  display: block;
  margin-bottom: 2rem;
}

.hero-headline {
  font-size: clamp(3.5rem, 6vw, 5.5rem);
  line-height: 1.05;
  margin-bottom: 2rem;
}

.headline-part {
  display: block;
}

.story-headline {
  font-size: clamp(2.5rem, 4vw, 4rem);
  line-height: 1.1;
  margin-bottom: 2rem;
}

.hero-subline, .story-subline {
  font-size: clamp(1.125rem, 2vw, 1.35rem);
  color: var(--text-secondary);
  max-width: 600px;
  margin-bottom: 3rem;
  font-weight: 400;
}

.story-content.right-align .story-subline {
  margin-left: auto;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  align-items: center;
}

/* === Split Layout for Story Sections === */
.split-layout {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 4rem;
  width: 100%;
}

.split-right {
  flex: 1;
}

.split-left {
  flex: 1;
  display: flex;
  justify-content: flex-start;
  align-items: center;
}

.giant-icon {
  color: var(--accent-color);
  opacity: 0.15;
  transition: opacity var(--transition-smooth), transform var(--transition-smooth);
}

.scroll-reveal.visible .giant-icon {
  opacity: 0.25;
  transform: rotate(15deg) scale(1.05); /* subtle rotation into place */
}

/* === Services Grid (Within Solution) === */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-top: 4rem;
}

.service-card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--bg-tertiary);
  padding: 3rem 2.5rem;
  border-radius: var(--radius-md);
  transition: transform var(--transition-smooth), border-color var(--transition-smooth);
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.service-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--accent-color);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-smooth);
}

.service-card:hover {
  transform: translateY(-5px);
  border-color: var(--text-muted);
}

.service-card:hover::after {
  transform: scaleX(1);
}

.service-icon {
  margin-bottom: 2rem;
  color: var(--accent-color);
}

.service-title {
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

.service-desc {
  color: var(--text-secondary);
  font-size: 1rem;
  line-height: 1.6;
}

/* ==================================
   The "Core/Human" Massive Block 
   Inspired by atuin.media's blue block
   But matched to Brand Vibe (Deep Teal)
   ================================== */
.human-block {
  width: 100%;
  background-color: var(--accent-deep);
  border-radius: var(--radius-lg);
  padding: 6rem 4rem;
  position: relative;
  overflow: hidden;
  box-shadow: 0 20px 50px rgba(0,0,0,0.5);
  border: 1px solid var(--accent-muted);
  color: #fff;
}

.human-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  position: relative;
  z-index: 2;
}

.human-header {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 2rem;
}

.human-title {
  font-size: clamp(3rem, 5vw, 5rem);
  line-height: 1.1;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 1.5rem;
  flex-wrap: wrap;
}

/* The outlined border word effect */
.human-title .bordered {
  padding: 0.5rem 1.5rem;
  border: 2px solid rgba(255, 255, 255, 0.4);
  border-radius: 50px;
  font-weight: 500;
}

.human-btn {
  border-color: rgba(255, 255, 255, 0.4);
  color: #fff;
}

.human-btn:hover {
  background-color: var(--text-primary);
  color: var(--bg-solid);
  border-color: var(--text-primary);
}

.human-text {
  font-size: clamp(1.1rem, 2vw, 1.4rem);
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.85);
}

.human-text p {
  margin-bottom: 1.5rem;
}

.human-text strong {
  color: var(--accent-color);
  font-weight: 600;
}

/* ==================================
   Dynamic Client Marquee Strip
   ================================== */
.marquee-wrapper {
  width: 100%;
  overflow: hidden;
  position: relative;
  display: flex;
  mask-image: linear-gradient(to right, transparent, black 10%, black 90%, transparent);
  -webkit-mask-image: linear-gradient(to right, transparent, black 10%, black 90%, transparent);
}

.marquee-track {
  display: flex;
  gap: 4rem; /* Spacing between logos */
  white-space: nowrap;
  animation: scroll-marquee 30s linear infinite;
  padding: 1rem 2rem;
}

/* Pause scroll when looking at a client */
.marquee-wrapper:hover .marquee-track {
  animation-play-state: paused;
}

.client-logo {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 60px;
  min-width: 180px;
  padding: 0.5rem 2rem;
  background: var(--bg-secondary);
  border: 1px solid var(--bg-tertiary);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 1.1rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  transition: color var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.client-logo:hover {
  color: var(--accent-color);
  border-color: var(--accent-muted);
  transform: translateY(-2px);
}

/* Replace text with img tags seamlessly in the JS component */
.client-logo img {
  max-width: 140px;
  max-height: 40px;
  object-fit: contain;
  filter: grayscale(100%) opacity(0.5); /* Neutralize bright colored logos */
  transition: filter var(--transition-fast);
}

.client-logo:hover img {
  filter: grayscale(0%) opacity(1); /* Reveal full logo colors on hover */
}

@keyframes scroll-marquee {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); } 
  /* Must translate exactly half of the duplicated track's total width */
}

/* Background subtle glow for human block */
.human-block::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 100%;
  height: 200%;
  background: radial-gradient(circle, rgba(94, 234, 212, 0.1) 0%, transparent 60%);
  z-index: 0;
  pointer-events: none;
}


/* === Footer === */
.footer {
  background-color: var(--bg-solid); 
  border-top: 1px solid var(--bg-tertiary);
  position: relative;
  z-index: 10;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 4rem;
  padding-bottom: 4rem;
  padding-top: 4rem;
}

.footer-info {
  max-width: 400px;
}

.footer-title {
  font-size: 2rem;
  margin-bottom: 1rem;
}

.footer-desc {
  color: var(--text-secondary);
  margin-bottom: 2rem;
}

.contact-email {
  font-size: 1.5rem;
  font-weight: 500;
  text-decoration: underline;
  text-underline-offset: 4px;
}

.contact-email:hover {
  color: var(--accent-color);
}

.footer-links {
  display: flex;
  gap: 4rem;
}

.link-group h4 {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.link-group a {
  display: block;
  font-size: 1rem;
  color: var(--text-primary);
  margin-bottom: 0.75rem;
}

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

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

/* === Interactive Reveal Utilities === */
.scroll-reveal {
  opacity: 0.15; /* Don't hide completely, let them wait in the dark */
  transform: translateY(40px) scale(0.98);
  transition: opacity 1s cubic-bezier(0.22, 1, 0.36, 1), transform 1s cubic-bezier(0.22, 1, 0.36, 1);
  will-change: opacity, transform;
}

/* Stagger services grid */
.services-grid .scroll-reveal:nth-child(1) { transition-delay: 0.1s; }
.services-grid .scroll-reveal:nth-child(2) { transition-delay: 0.2s; }
.services-grid .scroll-reveal:nth-child(3) { transition-delay: 0.3s; }

.scroll-reveal.visible {
  opacity: 1;
  transform: translateY(0) scale(1);
}

/* === Responsive === */
@media (max-width: 900px) {
  .human-container {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  .human-block {
    padding: 4rem 2rem;
  }
  .split-layout {
    flex-direction: column-reverse;
    text-align: right;
  }
  .split-left {
    justify-content: flex-end;
  }
  .giant-icon svg {
    width: 120px;
    height: 120px;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  
  .mobile-menu-btn {
    display: flex;
  }

  .mobile-menu-btn.active .bar:nth-child(1) {
    transform: translateY(4px) rotate(45deg);
  }
  .mobile-menu-btn.active .bar:nth-child(2) {
    transform: translateY(-4px) rotate(-45deg);
  }

  .hero-actions {
    flex-direction: column;
    align-items: flex-start;
  }
  
  .hero-actions a {
    width: 100%;
    text-align: center;
  }
  
  .footer-links {
    flex-direction: column;
    gap: 2rem;
  }
}