/* ============================================
   Design Tokens - CSS Custom Properties
   ============================================ */

:root {
  /* Background Colors */
  --bg-primary: #FAFAFA;        /* neutral-50 */
  --bg-secondary: #FFFFFF;      /* white */
  --bg-tertiary: #F5F5F5;       /* neutral-100 */

  /* Border Colors */
  --border-light: #E5E5E5;      /* neutral-200 */
  --border-medium: #D4D4D4;     /* neutral-300 */
  --border-dark: #A3A3A3;      /* neutral-400 */

  /* Text Colors */
  --text-primary: #171717;      /* neutral-900 */
  --text-secondary: #525252;    /* neutral-600 */
  --text-tertiary: #737373;     /* neutral-500 */

  /* Interactive States */
  --hover-bg: #F5F5F5;          /* neutral-100 */
  --hover-border: #A3A3A3;      /* neutral-400 */
  --selected-border: #171717;   /* neutral-900 */
  --selected-ring: #171717;     /* neutral-900 */
  --ring-offset: #FFFFFF;       /* white */

  /* Typography */
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-mono: 'Courier New', Courier, monospace;

  /* Font Sizes */
  --text-xs: 0.75rem;           /* 12px */
  --text-sm: 0.875rem;          /* 14px */
  --text-base: 1rem;            /* 16px */
  --text-xl: 1.25rem;           /* 20px */
  --text-2xl: 1.5rem;           /* 24px */
  --text-3xl: 2rem;             /* 32px */
  --text-4xl: 2.5rem;           /* 40px */
  --text-5xl: 3rem;             /* 48px */

  /* Font Weights */
  --font-normal: 400;
  --font-medium: 500;
  --font-semibold: 600;

  /* Spacing */
  --spacing-1: 0.25rem;         /* 4px */
  --spacing-2: 0.5rem;          /* 8px */
  --spacing-3: 0.75rem;         /* 12px */
  --spacing-4: 1rem;            /* 16px */
  --spacing-6: 1.5rem;          /* 24px */
  --spacing-8: 2rem;            /* 32px */
  --spacing-12: 3rem;           /* 48px */
  --spacing-16: 4rem;           /* 64px */
  --spacing-20: 5rem;           /* 80px */
  --spacing-24: 6rem;           /* 96px */

  /* Border Radius */
  --radius-sm: 0.375rem;        /* 6px */
  --radius-md: 0.5rem;          /* 8px */
  --radius-lg: 0.75rem;         /* 12px */

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);

  /* Transitions */
  --transition-fast: 150ms ease-out;
  --transition-base: 300ms ease-out;
  --transition-slow: 400ms ease-out;
}

/* ============================================
   Base Styles
   ============================================ */

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-4);
}

@media (min-width: 768px) {
  .container {
    padding: 0 var(--spacing-6);
  }
}

/* ============================================
   Logo Implementation
   ============================================ */

.logo-container {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-3);
}

.logo-icon {
  position: relative;
  width: 2rem;
  height: 2rem;
}

.logo-grid {
  position: absolute;
  inset: 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.125rem;
}

.logo-square {
  transition: background-color var(--transition-base);
}

.logo-square-1 {
  background-color: var(--logo-color-1, #171717);
  border-radius: var(--radius-sm) 0 0 0;
}

.logo-square-2 {
  background-color: var(--logo-color-2, #A3A3A3);
  border-radius: 0 var(--radius-sm) 0 0;
}

.logo-square-3 {
  background-color: var(--logo-color-3, #525252);
  border-radius: 0 0 0 var(--radius-sm);
}

.logo-square-4 {
  background-color: var(--logo-color-4, #E5E5E5);
  border-radius: 0 0 var(--radius-sm) 0;
}

.logo-text {
  font-size: var(--text-xl);
  font-weight: var(--font-semibold);
  letter-spacing: -0.025em;
  color: var(--logo-text-color, var(--text-primary));
  transition: color var(--transition-base);
}

/* ============================================
   Header
   ============================================ */

.header {
  background-color: var(--bg-secondary);
  border-bottom: 1px solid var(--border-light);
  padding: var(--spacing-4) 0;
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(10px);
  background-color: rgba(255, 255, 255, 0.9);
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-4);
}

/* Header logo sizing */
.header .logo-icon {
  width: 2.5rem;
  height: 2.5rem;
}

.header .logo-text {
  font-size: var(--text-2xl);
}

.btn-header {
  padding: var(--spacing-3) var(--spacing-6);
  font-size: var(--text-sm);
  white-space: nowrap;
  transition: opacity var(--transition-base), transform var(--transition-base), visibility var(--transition-base);
}

.btn-icon {
  flex-shrink: 0;
}

@media (max-width: 767px) {
  /* Hide header button by default on mobile, show on scroll */
  .btn-header {
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    padding: var(--spacing-2) var(--spacing-4);
    font-size: var(--text-xs);
    min-height: 2rem;
  }
  
  /* Smaller icon for mobile navbar button */
  .btn-header .btn-icon {
    width: 14px;
    height: 14px;
  }
  
  /* Show button when scrolled */
  .header.scrolled .btn-header {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }
}

@media (min-width: 768px) {
  .header-content {
    justify-content: space-between;
  }
  
  .btn-header {
    padding: var(--spacing-4) var(--spacing-8);
    font-size: var(--text-base);
  }
}

/* ============================================
   Hero Section
   ============================================ */

.hero {
  padding: var(--spacing-16) 0;
  background-color: var(--bg-secondary);
  text-align: center;
}

.hero-content {
  max-width: 800px;
  margin: 0 auto;
  animation: fadeInUp 0.6s ease-out;
}

.hero-logo {
  margin-bottom: var(--spacing-8);
  display: flex;
  justify-content: center;
}

.hero-logo-container {
  gap: var(--spacing-4);
}

.hero-logo-icon {
  width: 4.5rem;
  height: 4.5rem;
}

.hero-logo .logo-text {
  font-size: var(--text-3xl);
}

/* Animated logo squares for hero section */
.hero-logo-square-1 {
  background-color: #171717;
  animation: colorShift1 8s ease-in-out infinite;
}

.hero-logo-square-2 {
  background-color: #A3A3A3;
  animation: colorShift2 8s ease-in-out infinite;
}

.hero-logo-square-3 {
  background-color: #525252;
  animation: colorShift3 8s ease-in-out infinite;
}

.hero-logo-square-4 {
  background-color: #E5E5E5;
  animation: colorShift4 8s ease-in-out infinite;
}

@keyframes colorShift1 {
  0%, 100% { background-color: #171717; } /* neutral-900 */
  25% { background-color: #3B82F6; }      /* blue-500 */
  50% { background-color: #8B5CF6; }      /* violet-500 */
  75% { background-color: #EC4899; }      /* pink-500 */
}

@keyframes colorShift2 {
  0%, 100% { background-color: #A3A3A3; } /* neutral-400 */
  25% { background-color: #10B981; }     /* emerald-500 */
  50% { background-color: #F59E0B; }     /* amber-500 */
  75% { background-color: #06B6D4; }     /* cyan-500 */
}

@keyframes colorShift3 {
  0%, 100% { background-color: #525252; } /* neutral-600 */
  25% { background-color: #EF4444; }      /* red-500 */
  50% { background-color: #6366F1; }      /* indigo-500 */
  75% { background-color: #14B8A6; }     /* teal-500 */
}

@keyframes colorShift4 {
  0%, 100% { background-color: #E5E5E5; } /* neutral-200 */
  25% { background-color: #F97316; }     /* orange-500 */
  50% { background-color: #84CC16; }     /* lime-500 */
  75% { background-color: #A855F7; }     /* purple-500 */
}

.hero-headline {
  font-size: var(--text-5xl);
  font-weight: var(--font-semibold);
  line-height: 1.2;
  color: var(--text-primary);
  margin-bottom: var(--spacing-6);
  letter-spacing: -0.02em;
}

.hero-subheadline {
  font-size: var(--text-xl);
  color: var(--text-secondary);
  margin-bottom: var(--spacing-8);
  line-height: 1.6;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-2);
  padding: var(--spacing-4) var(--spacing-8);
  font-size: var(--text-base);
  font-weight: var(--font-medium);
  font-family: var(--font-sans);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-lg);
  background-color: var(--bg-secondary);
  color: var(--text-primary);
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
  line-height: 1.5;
  min-height: 48px;
  box-sizing: border-box;
}

@media (max-width: 767px) {
  .btn {
    border-radius: 1rem;
  }
}

.btn-primary {
  background: linear-gradient(135deg, var(--text-primary) 0%, var(--text-secondary) 50%, var(--text-primary) 100%);
  color: var(--bg-secondary);
  border: none;
  position: relative;
  overflow: hidden;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
  z-index: 0;
}

.btn-primary::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(45deg, var(--text-primary) 0%, var(--text-secondary) 50%, var(--text-primary) 100%);
  opacity: 0;
  transition: opacity var(--transition-base);
  z-index: -1;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-primary:hover::before {
  opacity: 1;
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: var(--shadow-sm);
}

.btn-primary,
.btn-primary .btn-icon {
  position: relative;
  z-index: 1;
}

/* Hero CTA Buttons Container */
.hero-cta-buttons {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-4);
  margin-bottom: var(--spacing-8);
  width: 100%;
}

.hero-cta-buttons .btn {
  width: 100%;
  max-width: 100%;
  justify-content: center;
}

@media (min-width: 640px) {
  .hero-cta-buttons {
    flex-direction: row;
    justify-content: center;
  }

  .hero-cta-buttons .btn {
    flex: 1;
    min-width: 0;
    max-width: 280px;
  }
}

/* Secondary Button */
.btn-secondary {
  background-color: var(--bg-secondary);
  color: var(--text-primary);
  border: 1px solid var(--border-medium);
  cursor: pointer;
  min-height: 48px;
  line-height: 1.5;
}

.btn-secondary:hover {
  border-color: var(--border-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

.btn-secondary:active {
  transform: translateY(0);
}

.btn-figma-icon {
  width: 18px;
  height: 18px;
  object-fit: contain;
  flex-shrink: 0;
}

/* Hero Video */
.hero-video-container {
  margin-top: var(--spacing-12);
  width: 100%;
  max-width: 1000px;
  margin-left: auto;
  margin-right: auto;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-light);
}

.hero-video {
  width: 100%;
  height: auto;
  display: block;
  background-color: var(--bg-tertiary);
}

/* Hide all video controls */
.hero-video::-webkit-media-controls {
  display: none !important;
}

.hero-video::-webkit-media-controls-enclosure {
  display: none !important;
}

.hero-video::-webkit-media-controls-panel {
  display: none !important;
}

.hero-video::-webkit-media-controls-play-button {
  display: none !important;
}

.hero-video::-webkit-media-controls-start-playback-button {
  display: none !important;
}

@media (min-width: 768px) {
  .hero {
    padding: var(--spacing-20) 0;
  }

  .hero-headline {
    font-size: var(--text-5xl);
  }

  .hero-subheadline {
    font-size: var(--text-2xl);
  }

  .hero-video-container {
    margin-top: var(--spacing-16);
  }
}

@media (max-width: 767px) {
  .hero-video-container {
    margin-top: var(--spacing-8);
    border-radius: var(--radius-md);
  }
}

/* ============================================
   Features Section
   ============================================ */

.features {
  padding: var(--spacing-16) 0;
  background-color: var(--bg-primary);
}

.features-headline {
  font-size: var(--text-2xl);
  font-weight: var(--font-semibold);
  text-align: center;
  color: var(--text-primary);
  margin-bottom: var(--spacing-12);
  letter-spacing: -0.01em;
}

.features-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-8);
  max-width: 1200px;
  margin: 0 auto;
}

/* Mobile: Image first, then scrollable cards */
.features-layout {
  grid-template-rows: auto 1fr;
}

.features-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-4);
  overflow-x: auto;
  overflow-y: visible;
  scroll-behavior: smooth;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  -ms-overflow-style: none;
  padding-bottom: var(--spacing-2);
}

.features-list::-webkit-scrollbar {
  display: none;
}

.feature-card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: var(--spacing-6);
  transition: all var(--transition-base);
  cursor: pointer;
  animation: fadeInUp 0.6s ease-out;
  animation-fill-mode: both;
  position: relative;
  flex-shrink: 0;
  min-width: 0;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--text-primary), var(--text-secondary));
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  opacity: 0;
  transition: opacity var(--transition-base);
}

.feature-card:nth-child(1) {
  animation-delay: 0.1s;
}

.feature-card:nth-child(2) {
  animation-delay: 0.2s;
}

.feature-card:nth-child(3) {
  animation-delay: 0.3s;
}

.feature-card:active {
  transform: scale(0.98);
}

.feature-card.active {
  border-color: var(--text-primary);
  border-width: 2px;
  background-color: var(--bg-tertiary);
  box-shadow: var(--shadow-md);
  transform: scale(1.02);
}

.feature-card.active::before {
  opacity: 1;
}

.feature-content {
  padding: 0;
}

.feature-title {
  font-size: var(--text-xl);
  font-weight: var(--font-semibold);
  color: var(--text-primary);
  margin-bottom: var(--spacing-3);
}

.feature-description {
  font-size: var(--text-base);
  color: var(--text-secondary);
  line-height: 1.6;
}

.feature-image-display {
  width: 100%;
  position: relative;
  height: fit-content;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 300px;
  margin-bottom: var(--spacing-6);
  order: -1;
}

.feature-image-container {
  width: 100%;
  max-width: 100%;
  overflow: hidden;
  background-color: var(--bg-tertiary);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-lg);
  position: relative;
  transform: scale(1);
  transform-origin: center;
  transition: transform var(--transition-base);
}

.feature-display-image {
  width: 100%;
  height: auto;
  display: block;
  opacity: 0;
  transition: opacity var(--transition-base);
}

.feature-display-image.loaded {
  opacity: 1;
}

/* Mobile specific styles */
@media (max-width: 767px) {
  .features-list {
    flex-direction: row;
    gap: var(--spacing-4);
    padding: var(--spacing-2) var(--spacing-4);
    margin: 0 calc(-1 * var(--spacing-4));
    scroll-padding: var(--spacing-4);
  }

  .feature-card {
    min-width: 85%;
    max-width: 85%;
  }

  .feature-image-display {
    order: -1;
    margin-bottom: var(--spacing-8);
    min-height: 250px;
  }

  .feature-image-container {
    max-width: 100%;
    transform: scale(1);
  }

  .feature-display-image {
    border-radius: var(--radius-lg);
  }
}

@media (min-width: 768px) {
  .features-layout {
    grid-template-columns: 1fr 1fr;
    grid-template-rows: none;
    gap: var(--spacing-20);
    align-items: center;
  }

  .features-list {
    flex-direction: column;
    overflow-x: visible;
    padding: 0;
  }

  .feature-card {
    min-width: auto;
    max-width: none;
    padding: var(--spacing-6);
  }

  .feature-card:hover {
    transform: translateX(8px);
  }

  .feature-card.active {
    transform: translateX(8px);
  }

  .feature-card::before {
    display: none;
  }

  .feature-image-display {
    order: 0;
    position: sticky;
    top: var(--spacing-8);
    min-height: 500px;
    margin-bottom: 0;
  }

  .feature-image-container {
    max-width: 120%;
    transform: scale(1.1);
  }
}

@media (min-width: 1024px) {
  .features-layout {
    gap: var(--spacing-24);
    align-items: center;
  }

  .feature-card {
    padding: var(--spacing-8);
  }

  .feature-image-display {
    min-height: 600px;
  }

  .feature-image-container {
    max-width: 130%;
    transform: scale(1.15);
  }
}

/* ============================================
   Footer
   ============================================ */

.footer {
  background-color: var(--bg-secondary);
  border-top: 1px solid var(--border-light);
  padding: var(--spacing-8) 0;
  margin-top: var(--spacing-16);
}

.footer-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-4);
  text-align: center;
}

.footer-text {
  font-size: var(--text-sm);
  color: var(--text-tertiary);
}

@media (min-width: 768px) {
  .footer-content {
    flex-direction: row;
    justify-content: center;
  }
}

/* ============================================
   Animations
   ============================================ */

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ============================================
   Utility Classes
   ============================================ */

.fade-in {
  opacity: 0;
  transition: opacity var(--transition-base);
}

.fade-in.visible {
  opacity: 1;
}