/* 
  Kalash Gulati Portfolio
  Theme: Cinematic Developer Portfolio
  The Dimensional Architect
*/

:root {
  /* Tonal Surface Palette */
  --surface-dim: #0e0e0e;
  --surface-container-low: #131313;
  --surface-container-high: #201f1f;
  --surface-bright: #2c2c2c;
  --surface-container-highest: #262626;

  /* Primary Light Source (Gradient / Glow) */
  --primary: #ba9eff;
  --primary-dim: #8455ef;
  
  /* Secondary Accent */
  --secondary: #699cff;
  --secondary-container: rgba(105, 156, 255, 0.15);

  /* Text Colors */
  --on-surface: #ffffff;
  --on-surface-variant: #adaaaa;

  /* Structural Details */
  --outline-variant: rgba(73, 72, 71, 0.15); /* Ghost border */

  /* Spacing */
  --spacing-4: 1.4rem;
  --spacing-16: 5.5rem;
  --spacing-24: 8.5rem;

  /* Typography */
  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'Inter', sans-serif;
}

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

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

body {
  background-color: var(--surface-dim);
  color: var(--on-surface-variant);
  font-family: var(--font-body);
  line-height: 1.6;
  overflow-x: hidden;
}

/* Text Hierarchy */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  color: var(--on-surface);
  line-height: 1.2;
}

.display-title {
  font-size: clamp(2.5rem, 6vw, 4rem);
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
}

.gradient-text {
  background: linear-gradient(135deg, var(--primary), var(--primary-dim));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.headline-sub {
  font-size: clamp(1.2rem, 3vw, 1.8rem);
  font-weight: 400;
  margin-bottom: 2rem;
  color: var(--on-surface-variant);
}

.section-title {
  font-size: 2.5rem;
  margin-bottom: 0.5rem;
  letter-spacing: -0.02em;
}

.section-intro {
  font-size: 1.1rem;
  margin-bottom: var(--spacing-4);
  color: var(--on-surface-variant);
}

.body-text {
  font-size: 1rem;
  margin-bottom: 2rem;
  max-width: 600px;
}

.label-hud {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--primary);
  margin-bottom: 0.5rem;
}

/* Layout Utilities */
.container {
  width: 90%;
  max-width: 1200px;
  margin: 0 auto;
}

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

/* Glassmorphism & Tonal Backgrounds */
.glass-layer {
  background-color: rgba(19, 19, 19, 0.4);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

.ambient-glow {
  position: absolute;
  top: -10vw;
  left: 50%;
  transform: translateX(-50%);
  width: 60vw;
  height: 60vw;
  background: radial-gradient(circle, rgba(186,158,255,0.05) 0%, rgba(14,14,14,0) 70%);
  z-index: -1;
  pointer-events: none;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.8rem 2rem;
  font-family: var(--font-body);
  font-weight: 500;
  text-decoration: none;
  border-radius: 4px; /* Slight roundness */
  transition: all 0.3s ease;
  cursor: pointer;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-dim));
  color: #fff;
  border: none;
  box-shadow: 0 0 20px rgba(186, 158, 255, 0);
}

.btn-primary:hover {
  box-shadow: 0 0 30px rgba(132, 85, 239, 0.4);
  transform: translateY(-2px);
}

.btn-secondary {
  background: rgba(38, 38, 38, 0.3);
  color: var(--secondary);
  border: 1px solid var(--outline-variant);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  background: rgba(38, 38, 38, 0.6);
  transform: translateY(-2px);
  border-color: rgba(105, 156, 255, 0.3);
}

.btn-tertiary {
  background: transparent;
  color: var(--on-surface-variant);
  border: none;
  position: relative;
}

.btn-tertiary::after {
  content: '';
  position: absolute;
  width: 0;
  height: 1px;
  bottom: 10px;
  left: 2rem;
  background-color: var(--on-surface);
  transition: width 0.3s ease;
}

.btn-tertiary:hover {
  color: var(--on-surface);
}

.btn-tertiary:hover::after {
  width: calc(100% - 4rem);
}

.cta-group {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

/* Sections */
section {
  padding: var(--spacing-16) 0;
}

/* Hero Section */
.hero-section {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
}

.hero-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.hero-text-area {
  z-index: 2;
}

.hero-image-area {
  position: relative;
  display: flex;
  justify-content: flex-end;
}

.portrait-wrapper {
  position: relative;
  width: 100%;
  max-width: 400px;
  aspect-ratio: 4/5;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--outline-variant);
  transform: perspective(1000px) rotateY(-5deg);
  transition: transform 0.5s ease;
}

.portrait-wrapper:hover {
  transform: perspective(1000px) rotateY(0deg);
}

.hero-portrait {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.portrait-wrapper:hover .hero-portrait {
  transform: scale(1.02);
}

/* Specific Projects Section Elements */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: var(--spacing-4);
  margin-top: 3rem;
}

.project-card {
  display: block; /* For anchor tags */
  text-decoration: none;
  color: inherit;
  background-color: var(--surface-container-low);
  border: 1px solid var(--outline-variant);
  border-radius: 8px;
  padding: 2rem;
  position: relative;
  overflow: hidden;
  transition: all 0.4s ease;
  transform: translateY(0);
  cursor: pointer;
}

.project-card:hover {
  background-color: var(--surface-container-highest);
  transform: translateY(-5px);
  border-color: rgba(186, 158, 255, 0.2);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4);
}

.card-title {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
}

.card-desc {
  font-size: 0.95rem;
  margin-bottom: 1.5rem;
}

/* HUD Chips */
.hud-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: auto;
}

.chip {
  font-size: 0.75rem;
  background-color: var(--secondary-container);
  color: var(--secondary);
  padding: 0.2rem 0.6rem;
  border-radius: 20px;
  border: 1px solid var(--outline-variant);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

/* Connect Section */
.connect-section {
  background-color: var(--surface-container-low);
  padding: var(--spacing-16) 0;
  border-top: 1px solid var(--outline-variant);
}

.connect-links {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-top: 3rem;
  flex-wrap: wrap;
}

/* Footer */
.site-footer {
  padding: 2rem 0;
  background-color: var(--surface-dim);
  border-top: 1px solid var(--outline-variant);
  font-size: 0.85rem;
}

/* Utilities / Animations */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Loading State for GitHub */
.loading-text {
  text-align: center;
  width: 100%;
  color: var(--primary-dim);
  font-style: italic;
  grid-column: 1 / -1;
}

/* Media Queries (Mobile-First responsive approach implicitly, overrides for small screens) */
@media screen and (max-width: 900px) {
  .hero-content {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .hero-image-area {
    justify-content: center;
    order: -1; /* Image above text on mobile */
  }

  .cta-group {
    justify-content: center;
  }
  
  .portrait-wrapper {
    transform: none;
    max-width: 300px;
  }
  
  .portrait-wrapper:hover {
    transform: none;
  }
  
  .btn-tertiary::after {
    left: 50%;
    transform: translateX(-50%);
  }
  
  .btn-tertiary:hover::after {
    width: 60%;
  }

  /* Reduce spacing on mobile */
  :root {
    --spacing-16: 4rem;
    --spacing-24: 5rem;
  }
}