/* ========================================
   MOTION PORTFOLIO - Design System
   Based on ints.design aesthetics
======================================== */

@font-face {
  font-family: 'PP Neue Montreal';
  src: url('../assets/fonts/PPNeueMontreal-Thin.otf') format('opentype');
  font-weight: 100;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'PP Neue Montreal';
  src: url('../assets/fonts/PPNeueMontreal-Book.otf') format('opentype');
  font-weight: 300;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'PP Neue Montreal';
  src: url('../assets/fonts/PPNeueMontreal-Book.otf') format('opentype');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'PP Neue Montreal';
  src: url('../assets/fonts/PPNeueMontreal-Medium.otf') format('opentype');
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}

:root {
  /* Colors */
  --bg: #fcf8ea;
  --bg-dark: #0a0a0a;
  --text: #1A1A1A;
  --text-muted: #666;
  --text-light: #fcf8ea;
  --accent: #1A1A1A;
  --accent-secondary: #666;

  /* Typography */
  --font-main: 'PP Neue Montreal', -apple-system, BlinkMacSystemFont, 'Helvetica Neue', sans-serif;
  --font-mono: 'SF Mono', Monaco, monospace;

  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 2rem;
  --space-lg: 4rem;
  --space-xl: 8rem;

  /* Transitions */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --duration: 0.6s;
  --duration-fast: 0.3s;
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

/* Layout */
.container {
  width: 100%;
  padding: 0 32px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  column-gap: 32px;
  row-gap: 1.25rem;
}

/* Tablet - 2 columns */
@media (max-width: 1024px) {
  .container {
    grid-template-columns: repeat(2, 1fr);
    row-gap: 1.25rem;
    align-items: start;
  }

  .col:has(.hero-subtitle) {
    grid-column: 1 / -1;
  }

  .col:has(.hero-subtitle) + .col.empty,
  .col:has(.hero-subtitle) + .col.empty + .col.empty,
  .col:has(.hero-subtitle) + .col.empty + .col.empty + .col.empty {
    display: none;
  }

  /* Stack intro text paragraphs on tablet */
  .col:has(.hero-text) {
    grid-column: 1 / -1;
  }

  .col:has(.hero-text) + .col.empty {
    display: none;
  }
}

/* Mobile - 1 column */
@media (max-width: 600px) {
  .container {
    grid-template-columns: 1fr;
    row-gap: 1.25rem;
  }

  .col.empty {
    display: none;
  }
}

.section {
  padding: 0;
  min-height: auto;
}

.section-dark {
  background: var(--bg-dark);
  color: var(--text-light);
}

.section-title {
  font-size: clamp(1.5rem, 4vw, 2rem);
  font-weight: 500;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  margin-bottom: var(--space-xs);
}

.section-desc {
  font-size: 1.1rem;
  color: var(--text-muted);
  margin-bottom: var(--space-lg);
}

.section-dark .section-desc {
  color: rgba(252, 248, 234, 0.6);
}

/* ========================================
   HERO
======================================== */
#hero {
  padding-top: 5rem;
  padding-bottom: 40px;
}

#greeting-lottie {
  width: 100%;
  max-width: 280px;
}

.hero-title {
  font-size: 30px;
  font-weight: 500;
  line-height: 1.3;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: #1A1A1A;
  margin-bottom: 0;
}

.hero-text {
  font-size: 1rem;
  font-weight: 400;
  line-height: 1.25rem;
  color: #1A1A1A;
  margin-bottom: 1rem;
}

.hero-text:last-child {
  margin-bottom: 0;
}

.hero-subtitle {
  font-size: 1.25rem;
  font-weight: 300;
  line-height: 1.3;
  color: #1A1A1A;
  margin-bottom: 0;
}

.showcase-gif {
  width: 100%;
  height: auto;
  border-radius: 12px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12);
}

.showcase-video {
  width: 100%;
  height: auto;
  border-radius: 12px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12);
}

lottie-player {
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12);
}

/* Video expandable */
.video-expandable {
  position: relative;
  cursor: pointer;
}

.play-button {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 10;
  width: 64px;
  height: 64px;
  background: rgba(0, 0, 0, 0.7);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
}

.play-button:hover {
  background: rgba(0, 0, 0, 0.85);
  transform: translate(-50%, -50%) scale(1.05);
}

.video-expandable.playing .play-button {
  opacity: 0;
  pointer-events: none;
}

/* Video overlay */
.video-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0);
  z-index: 999;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
  transition: background 0.4s ease;
}

.video-overlay.active {
  background: rgba(0, 0, 0, 0.75);
  pointer-events: auto;
}

.video-overlay video {
  width: 80%;
  max-width: 1200px;
  border-radius: 12px;
  opacity: 0;
  transform: scale(0.8);
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.video-overlay.active video {
  opacity: 1;
  transform: scale(1);
}

.video-overlay .close-btn {
  position: absolute;
  top: 32px;
  right: 32px;
  width: 48px;
  height: 48px;
  border: none;
  background: rgba(0, 0, 0, 0.7);
  border-radius: 12px;
  cursor: pointer;
  opacity: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
}

.video-overlay.active .close-btn {
  opacity: 1;
}

.video-overlay .close-btn:hover {
  background: rgba(0, 0, 0, 0.85);
  transform: scale(1.05);
}

.video-overlay .close-btn svg {
  width: 20px;
  height: 20px;
}

.col-2 {
  grid-column: span 2;
}

@media (max-width: 600px) {
  .col-2 {
    grid-column: span 1;
  }
}

.scroll-indicator {
  position: absolute;
  bottom: var(--space-lg);
  left: 50%;
  transform: translateX(-50%);
  animation: float 2s var(--ease-in-out) infinite;
}

.scroll-arrow {
  color: var(--text-muted);
}

@keyframes float {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(10px); }
}

/* ========================================
   MICRO ANIMATIONS
======================================== */
.micro-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: var(--space-md);
}

.micro-card {
  aspect-ratio: 1;
  background: rgba(0, 0, 0, 0.03);
  border-radius: 16px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-out);
}

.micro-card:hover {
  background: rgba(0, 0, 0, 0.06);
  transform: scale(1.02);
}

.icon-demo {
  width: 64px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.icon-demo svg {
  transition: all var(--duration-fast) var(--ease-out);
}

.micro-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

/* Micro Animation States */
/* Menu Toggle */
[data-animation="menu"] .line-1,
[data-animation="menu"] .line-2,
[data-animation="menu"] .line-3 {
  transform-origin: center;
  transition: all var(--duration-fast) var(--ease-out);
}

[data-animation="menu"].active .line-1 {
  transform: translateY(6px) rotate(45deg);
}

[data-animation="menu"].active .line-2 {
  opacity: 0;
  transform: scaleX(0);
}

[data-animation="menu"].active .line-3 {
  transform: translateY(-6px) rotate(-45deg);
}

/* Heart Like */
[data-animation="heart"] .heart-path {
  transition: all var(--duration-fast) var(--ease-out);
  stroke-dasharray: 100;
  stroke-dashoffset: 0;
}

[data-animation="heart"].active .heart-path {
  fill: #e74c3c;
  stroke: #e74c3c;
  animation: heartPop 0.4s var(--ease-out);
}

@keyframes heartPop {
  0% { transform: scale(1); }
  50% { transform: scale(1.3); }
  100% { transform: scale(1); }
}

/* Check Success */
[data-animation="check"] .check-circle {
  stroke-dasharray: 166;
  stroke-dashoffset: 166;
  transition: stroke-dashoffset 0.6s var(--ease-out);
}

[data-animation="check"] .check-mark {
  stroke-dasharray: 50;
  stroke-dashoffset: 50;
  transition: stroke-dashoffset 0.4s var(--ease-out) 0.3s;
}

[data-animation="check"].active .check-circle {
  stroke-dashoffset: 0;
  stroke: #27ae60;
}

[data-animation="check"].active .check-mark {
  stroke-dashoffset: 0;
  stroke: #27ae60;
}

/* Loader */
[data-animation="loader"] .loader-progress {
  stroke-dasharray: 62.83;
  stroke-dashoffset: 62.83;
  transform-origin: center;
  animation: none;
}

[data-animation="loader"].active .loader-progress {
  animation: loaderSpin 1.5s linear infinite;
}

@keyframes loaderSpin {
  0% {
    stroke-dashoffset: 62.83;
    transform: rotate(0deg);
  }
  50% {
    stroke-dashoffset: 15;
  }
  100% {
    stroke-dashoffset: 62.83;
    transform: rotate(360deg);
  }
}

/* Bell Notification */
[data-animation="bell"] .bell-body,
[data-animation="bell"] .bell-clapper {
  transform-origin: top center;
  transition: all var(--duration-fast) var(--ease-out);
}

[data-animation="bell"].active .bell-body {
  animation: bellRing 0.6s var(--ease-out);
}

[data-animation="bell"].active .bell-clapper {
  animation: clapperSwing 0.6s var(--ease-out) 0.1s;
}

@keyframes bellRing {
  0%, 100% { transform: rotate(0deg); }
  20% { transform: rotate(15deg); }
  40% { transform: rotate(-12deg); }
  60% { transform: rotate(8deg); }
  80% { transform: rotate(-5deg); }
}

@keyframes clapperSwing {
  0%, 100% { transform: rotate(0deg); }
  25% { transform: rotate(20deg); }
  50% { transform: rotate(-15deg); }
  75% { transform: rotate(10deg); }
}

/* Send */
[data-animation="send"] .send-plane {
  transition: all var(--duration-fast) var(--ease-out);
}

[data-animation="send"].active .send-plane {
  animation: sendFly 0.5s var(--ease-out);
}

@keyframes sendFly {
  0% { transform: translate(0, 0) scale(1); opacity: 1; }
  50% { transform: translate(20px, -20px) scale(0.8); opacity: 0.5; }
  51% { transform: translate(-10px, 10px) scale(0.8); opacity: 0; }
  100% { transform: translate(0, 0) scale(1); opacity: 1; }
}

/* ========================================
   EXPLAINER / CONTENT ANIMATIONS
======================================== */
.explainer-showcase {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
  align-items: center;
  margin-bottom: var(--space-xl);
}

.explainer-showcase.reverse {
  direction: rtl;
}

.explainer-showcase.reverse > * {
  direction: ltr;
}

.explainer-demo {
  aspect-ratio: 4/3;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.explainer-text h3 {
  font-size: 1.5rem;
  font-weight: 500;
  margin-bottom: var(--space-sm);
}

.explainer-text p {
  color: rgba(252, 248, 234, 0.7);
  line-height: 1.7;
}

/* Flow Animation */
.flow-animation {
  display: flex;
  align-items: center;
  gap: 0;
  position: relative;
  padding: var(--space-md);
}

.flow-node {
  padding: var(--space-sm) var(--space-md);
  background: rgba(252, 248, 234, 0.1);
  border: 1px solid rgba(252, 248, 234, 0.2);
  border-radius: 8px;
  font-size: 0.9rem;
  font-family: var(--font-mono);
  transition: all var(--duration-fast) var(--ease-out);
}

.flow-line {
  width: 60px;
  height: 2px;
  background: rgba(252, 248, 234, 0.2);
  position: relative;
}

.flow-line::after {
  content: '';
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  border: 5px solid transparent;
  border-left-color: rgba(252, 248, 234, 0.3);
}

.flow-particle {
  position: absolute;
  width: 8px;
  height: 8px;
  background: var(--text-light);
  border-radius: 50%;
  left: 15%;
  animation: flowMove 3s var(--ease-in-out) infinite;
}

@keyframes flowMove {
  0% { left: 15%; opacity: 0; }
  10% { opacity: 1; }
  45% { left: 45%; }
  55% { left: 55%; }
  90% { opacity: 1; }
  100% { left: 85%; opacity: 0; }
}

/* Layers Animation */
.layers-animation {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  perspective: 800px;
}

.layer {
  padding: var(--space-sm) var(--space-lg);
  background: rgba(252, 248, 234, 0.1);
  border: 1px solid rgba(252, 248, 234, 0.2);
  border-radius: 8px;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  text-align: center;
  transform-style: preserve-3d;
  animation: layerFloat 4s var(--ease-in-out) infinite;
}

.layer-1 { animation-delay: 0s; }
.layer-2 { animation-delay: 0.3s; }
.layer-3 { animation-delay: 0.6s; }

@keyframes layerFloat {
  0%, 100% { transform: rotateX(5deg) translateZ(0); }
  50% { transform: rotateX(-5deg) translateZ(20px); }
}

/* ========================================
   PLAYGROUND
======================================== */
.playground-wrapper {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--space-lg);
  background: rgba(0, 0, 0, 0.03);
  border-radius: 20px;
  padding: var(--space-md);
}

.playground-canvas {
  aspect-ratio: 4/3;
  background: var(--bg);
  border-radius: 12px;
  overflow: hidden;
}

#playground-svg {
  width: 100%;
  height: 100%;
}

.playground-controls {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  padding: var(--space-sm);
}

.control-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.control-group label {
  font-size: 0.85rem;
  font-family: var(--font-mono);
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.control-group input[type="range"] {
  -webkit-appearance: none;
  width: 100%;
  height: 6px;
  background: rgba(0, 0, 0, 0.1);
  border-radius: 3px;
  cursor: pointer;
}

.control-group input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 18px;
  height: 18px;
  background: var(--text);
  border-radius: 50%;
  cursor: grab;
  transition: transform var(--duration-fast) var(--ease-out);
}

.control-group input[type="range"]::-webkit-slider-thumb:hover {
  transform: scale(1.2);
}

.control-group select {
  padding: var(--space-xs) var(--space-sm);
  background: var(--bg);
  border: 1px solid rgba(0, 0, 0, 0.1);
  border-radius: 8px;
  font-family: var(--font-main);
  font-size: 0.9rem;
  cursor: pointer;
}

.ctrl-value {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
}

.trigger-buttons {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xs);
}

.trigger-btn {
  padding: var(--space-xs) var(--space-sm);
  background: var(--bg);
  border: 1px solid rgba(0, 0, 0, 0.1);
  border-radius: 8px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-out);
}

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

/* ========================================
   FOOTER
======================================== */
.footer {
  padding: var(--space-lg) 0;
  text-align: center;
  border-top: 1px solid rgba(0, 0, 0, 0.05);
}

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

/* ========================================
   RESPONSIVE
======================================== */
@media (max-width: 768px) {
  .section {
    padding: var(--space-lg) 0;
    min-height: auto;
  }

  .explainer-showcase,
  .explainer-showcase.reverse {
    grid-template-columns: 1fr;
    direction: ltr;
  }

  .playground-wrapper {
    grid-template-columns: 1fr;
  }

  .micro-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}