/**
 * Main Styles for Bhagyesh Kumar's Portfolio
 * A modern, minimalist dark/light theme design
 */

/* ==========================================================================
   CSS Custom Properties (Design Tokens)
   ========================================================================== */
:root {
  /* Colors - Dark Mode (Default) */
  --color-bg: #0f0f0f;
  --color-bg-container: linear-gradient(
    135deg,
    #0a0a0a 0%,
    #1a0a1a 50%,
    #0a0a1a 100%
  );
  --color-text: #e0e0e0;
  --color-text-muted: #b0b0b0;
  --color-text-subtle: #999;
  --color-heading: #fff;
  --color-border: rgba(255, 255, 255, 0.15);
  --color-border-subtle: #1a1a1a;

  /* Accent Colors */
  --color-primary: #da4cff;
  --color-secondary: #4c9aff;
  --gradient-primary: linear-gradient(135deg, #da4cff 0%, #4c9aff 100%);

  /* Component Colors */
  --color-card-bg: rgba(15, 15, 15, 0.5);
  --color-card-bg-hover: rgba(15, 15, 15, 0.8);
  --color-button-bg: #1a1a1a;
  --color-button-border: #333;

  /* Shadows */
  --shadow-glow: 0 0 60px rgba(218, 76, 255, 0.2);
  --shadow-card: 0 12px 30px rgba(218, 76, 255, 0.15);
  --shadow-button: 0 5px 15px rgba(218, 76, 255, 0.4);

  /* Typography */
  --font-family: "Courier New", Courier, monospace;
  --line-height: 1.6;

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 0.8rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;

  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 24px;

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.6s ease;
}

/* Light Mode Overrides */
body.light-mode {
  --color-bg: #e8e8e8;
  --color-bg-container: linear-gradient(
    135deg,
    #f5f5f5 0%,
    #e8e0f0 50%,
    #e0e8f5 100%
  );
  --color-text: #2a2a2a;
  --color-text-muted: #4a4a4a;
  --color-text-subtle: #666;
  --color-heading: #1a1a1a;
  --color-border: rgba(0, 0, 0, 0.12);
  --color-border-subtle: #e0e0e0;

  --color-primary: #8b4cff;
  --color-secondary: #6b4cff;

  --color-card-bg: rgba(255, 255, 255, 0.6);
  --color-card-bg-hover: rgba(255, 255, 255, 0.9);
  --color-button-bg: #fff;
  --color-button-border: #ddd;

  --shadow-glow: 0 0 60px rgba(139, 76, 255, 0.15);
  --shadow-card: 0 12px 30px rgba(139, 76, 255, 0.12);
  --shadow-button: 0 5px 15px rgba(139, 76, 255, 0.3);
}

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

html,
body {
  overflow: hidden;
  height: 100vh;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-family);
  line-height: var(--line-height);
  color: var(--color-text);
  background: var(--color-bg);
  padding: var(--spacing-md);
  transition: color var(--transition-slow), background var(--transition-slow);
}

/* ==========================================================================
   Noise Overlay
   ========================================================================== */
.noise {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  opacity: 0.03;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 400 400' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
  transition: opacity var(--transition-slow);
}

body.light-mode .noise {
  opacity: 0.02;
}

/* ==========================================================================
   Scroll Progress
   ========================================================================== */
.scroll-progress {
  position: fixed;
  top: 0;
  right: 0;
  width: 3px;
  height: 100%;
  background: var(--color-border-subtle);
  z-index: 100;
  transition: background var(--transition-slow);
}

.scroll-progress-bar {
  width: 100%;
  height: 0%;
  background: var(--gradient-primary);
  transition: height var(--transition-fast);
}

/* ==========================================================================
   Theme Toggle (Lamp)
   ========================================================================== */
.theme-toggle {
  position: fixed;
  top: var(--spacing-lg);
  right: var(--spacing-lg);
  z-index: 1000;
  cursor: pointer;
  background: rgba(26, 26, 26, 0.8);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  padding: var(--spacing-sm) var(--spacing-md);
  transition: all var(--transition-normal);
}

.theme-toggle:hover {
  background: rgba(26, 26, 26, 0.95);
  border-color: rgba(218, 76, 255, 0.5);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(218, 76, 255, 0.3);
}

body.light-mode .theme-toggle {
  background: rgba(255, 255, 255, 0.8);
  border-color: rgba(0, 0, 0, 0.1);
}

body.light-mode .theme-toggle:hover {
  background: rgba(255, 255, 255, 0.95);
  border-color: rgba(139, 76, 255, 0.5);
  box-shadow: 0 4px 12px rgba(139, 76, 255, 0.2);
}

.lamp-container {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.lamp-string {
  width: 2px;
  height: 40px;
  background: #333;
  margin-bottom: 5px;
  transition: height var(--transition-normal), background var(--transition-slow);
}

body.light-mode .lamp-string {
  background: #999;
}

.lamp-pull {
  width: 12px;
  height: 12px;
  background: #666;
  border-radius: 50%;
  transition: all var(--transition-normal);
}

body.light-mode .lamp-pull {
  background: #999;
}

.lamp-container:hover .lamp-string {
  height: 50px;
}

.lamp-container:hover .lamp-pull {
  transform: scale(1.2);
}

.lamp-container:active .lamp-string {
  height: 35px;
}

.lamp-container:active .lamp-pull {
  transform: scale(0.9);
}

/* ==========================================================================
   Main Container
   ========================================================================== */
.container {
  max-width: 1200px;
  width: 100%;
  height: calc(100vh - 2rem);
  margin: 0 auto;
  position: relative;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  background: var(--color-bg-container);
  box-shadow: 0 0 0 12px rgba(50, 50, 60, 0.6),
    0 0 0 13px rgba(100, 100, 120, 0.3), var(--shadow-glow);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

body.light-mode .container {
  box-shadow: 0 0 0 12px rgba(200, 200, 210, 0.5),
    0 0 0 13px rgba(150, 150, 160, 0.3), var(--shadow-glow);
}

.scroll-container {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.scroll-container::-webkit-scrollbar {
  display: none;
}

/* ==========================================================================
   Content Layout
   ========================================================================== */
.content-wrapper {
  padding: var(--spacing-xl) 2.5rem;
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: var(--spacing-xl);
  align-items: start;
}

/* ==========================================================================
   Profile Section
   ========================================================================== */
.profile-section {
  position: sticky;
  top: var(--spacing-xl);
  display: flex;
  flex-direction: column;
  align-items: center;
}



.profile-img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  margin-bottom: 1.2rem;
  border-radius: 50%;
  filter: grayscale(20%) contrast(1.1);
  transition: all 0.5s ease;
}

.profile-img:hover {
  filter: grayscale(0%) contrast(1.2);
  transform: scale(1.05);
  box-shadow: 0 8px 30px rgba(218, 76, 255, 0.3);
}

body.light-mode .profile-img {
  filter: grayscale(0%) contrast(1.1);
}

.handle {
  font-size: 0.85rem;
  color: var(--color-text-subtle);
  margin-bottom: var(--spacing-md);
  text-align: center;
  transition: color var(--transition-slow);
}

/* ==========================================================================
   Social Links
   ========================================================================== */
.links {
  display: flex;
  gap: var(--spacing-sm);
  margin-bottom: 1.2rem;
  justify-content: center;
}

.links a {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-button-bg);
  border: 1px solid var(--color-button-border);
  color: var(--color-text-subtle);
  text-decoration: none;
  transition: all var(--transition-normal);
  font-size: 0.85rem;
}

.links a:hover {
  background: #222;
  border-color: var(--color-primary);
  color: var(--color-primary);
  transform: translateY(-3px);
  box-shadow: var(--shadow-button);
}

body.light-mode .links a:hover {
  background: #f5f5f5;
}

/* ==========================================================================
   Navigation
   ========================================================================== */
.nav {
  margin-top: var(--spacing-lg);
}

.nav a {
  display: block;
  color: #666;
  text-decoration: none;
  padding: 0.35rem 0;
  font-size: 0.95rem;
  font-style: italic;
  transition: all var(--transition-normal);
  position: relative;
}

.nav a::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-secondary), transparent);
  transition: width var(--transition-normal);
}

.nav a:hover {
  color: var(--color-secondary);
  padding-left: var(--spacing-md);
}

.nav a:hover::before {
  width: 0.6rem;
}

/* ==========================================================================
   Main Content
   ========================================================================== */
.main-content {
  min-width: 0;
}

header {
  margin-bottom: var(--spacing-xl);
}

.intro {
  margin-bottom: 0;
}

/* ==========================================================================
   Typography
   ========================================================================== */
h1 {
  font-size: 1.75rem;
  font-weight: 300;
  margin-bottom: 1.2rem;
  color: var(--color-heading);
  line-height: 1.3;
  transition: color var(--transition-slow);
}

h1 .highlight {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

h2 {
  font-size: 1.3rem;
  font-weight: 300;
  margin-bottom: var(--spacing-lg);
  color: var(--color-heading);
  font-style: italic;
  transition: color var(--transition-slow);
}

.bio {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  line-height: var(--line-height);
  max-width: 650px;
  transition: color var(--transition-slow);
}

.bio a {
  color: var(--color-primary);
  text-decoration: none;
  border-bottom: 1px solid rgba(218, 76, 255, 0.25);
  transition: all var(--transition-normal);
}

.bio a:hover {
  border-bottom-color: var(--color-primary);
}

/* ==========================================================================
   Sections
   ========================================================================== */
section {
  margin-bottom: 1.8rem;
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

section.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ==========================================================================
   Projects
   ========================================================================== */
.project {
  margin-bottom: var(--spacing-lg);
  padding-bottom: var(--spacing-lg);
  border-bottom: 1px solid var(--color-border-subtle);
  transition: all 0.4s ease;
}

.project:last-child {
  border-bottom: none;
}

.project:hover {
  transform: translateX(10px);
  padding-left: var(--spacing-md);
}

.project-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-sm);
}

.project-info {
  flex: 1;
}

.project-links {
  display: flex;
  gap: var(--spacing-sm);
  flex-shrink: 0;
}

.project-category {
  font-size: 0.75rem;
  color: #666;
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: var(--spacing-sm);
  font-weight: 500;
}

.project-title {
  font-size: 1.15rem;
  font-weight: 500;
  margin-bottom: var(--spacing-sm);
  color: var(--color-heading);
  line-height: 1.4;
  transition: color var(--transition-slow);
}

.project-meta {
  font-size: 0.9rem;
  color: var(--color-text-subtle);
  margin-bottom: var(--spacing-xs);
  line-height: 1.5;
  transition: color var(--transition-slow);
}

.project-venue {
  font-size: 0.85rem;
  color: #7a7a7a;
  font-style: italic;
  margin-bottom: 0;
  transition: color var(--transition-slow);
}

.project-desc {
  font-size: 0.9rem;
  color: var(--color-text-subtle);
  line-height: 1.5;
  margin-bottom: var(--spacing-sm);
  max-width: 600px;
  transition: color var(--transition-slow);
}

.project-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--color-heading);
  text-decoration: none;
  font-size: 0.85rem;
  padding: var(--spacing-xs) 1.2rem;
  border: 1px solid var(--color-button-border);
  background: var(--color-button-bg);
  border-radius: var(--radius-sm);
  transition: all var(--transition-normal);
}

.project-link:hover {
  background: #222;
  border-color: var(--color-secondary);
  color: var(--color-secondary);
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(76, 154, 255, 0.3);
}

body.light-mode .project-link:hover {
  background: #f5f5f5;
}

/* ==========================================================================
   Rejections / Highlights Lists
   ========================================================================== */
.rejections {
  background: #0f0f0f;
  padding: 1.2rem;
  border-left: 2px solid rgba(218, 76, 255, 0.25);
  transition: all 0.4s ease;
}

.rejections:hover {
  border-left-color: var(--color-primary);
  padding-left: var(--spacing-xl);
}

body.light-mode .rejections {
  background: #ffffff;
  border-left-color: rgba(139, 76, 255, 0.4);
}

.rejections ul {
  list-style: none;
}

.rejections li {
  padding: 0.6rem 0;
  color: #aaa;
  font-size: 0.9rem;
  position: relative;
  padding-left: var(--spacing-lg);
  transition: all var(--transition-normal);
}

.rejections li:hover {
  color: #ccc;
  padding-left: var(--spacing-xl);
}

.rejections li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: #444;
  transition: all var(--transition-normal);
}

.rejections li:hover::before {
  color: var(--color-primary);
  left: var(--spacing-xs);
}

body.light-mode .rejections li {
  color: #666;
}

body.light-mode .rejections li:hover {
  color: #333;
}

/* ==========================================================================
   Side-by-Side Layout
   ========================================================================== */
.side-by-side-wrapper {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-lg);
  margin-bottom: 1.8rem;
}

/* ==========================================================================
   Compact Sections
   ========================================================================== */
.compact-section {
  background: linear-gradient(135deg, #1a0a1a 0%, #0a0a1a 100%);
  border: 1px solid rgba(218, 76, 255, 0.2);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  transition: all 0.4s ease;
}

.compact-section:hover {
  border-color: rgba(218, 76, 255, 0.5);
  box-shadow: var(--shadow-card);
}

body.light-mode .compact-section {
  background: linear-gradient(135deg, #f8f5fa 0%, #f5f8fa 100%);
  border-color: rgba(139, 76, 255, 0.2);
}

body.light-mode .compact-section:hover {
  border-color: rgba(139, 76, 255, 0.5);
}

.compact-section h2 {
  font-size: 1.2rem;
  margin-bottom: 1.2rem;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ==========================================================================
   Compact Items
   ========================================================================== */
.compact-item {
  position: relative;
  background: var(--color-card-bg);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  margin-bottom: var(--spacing-sm);
  transition: all var(--transition-normal);
}

.compact-item:last-child {
  margin-bottom: 0;
}

.compact-item:hover {
  background: var(--color-card-bg-hover);
  border-color: rgba(76, 154, 255, 0.3);
  transform: translateX(8px);
}

body.light-mode .compact-item {
  border-color: rgba(0, 0, 0, 0.08);
}

body.light-mode .compact-item:hover {
  border-color: rgba(107, 76, 255, 0.3);
}

.compact-item-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  margin-bottom: 0.6rem;
}

.compact-logo {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  object-fit: cover;
  flex-shrink: 0;
  background: #fff;
  padding: 4px;
}

.compact-item-content {
  flex: 1;
  min-width: 0;
}

.compact-category {
  font-size: 0.7rem;
  color: var(--color-secondary);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-bottom: 0.6rem;
  font-weight: 600;
}

.compact-title {
  font-size: 0.95rem;
  font-weight: 500;
  margin-bottom: var(--spacing-xs);
  color: var(--color-heading);
  line-height: 1.3;
  transition: color var(--transition-slow);
}

.compact-desc {
  font-size: 0.8rem;
  color: var(--color-text-subtle);
  line-height: 1.5;
  transition: color var(--transition-slow);
}

/* ==========================================================================
   Publication Image Preview
   ========================================================================== */
.publication-image {
  position: fixed;
  right: -2rem;
  top: -6rem;
  transform: translateX(20px) scale(0.95);
  width: 350px;
  max-width: 40vw;
  border-radius: 16px;
  opacity: 0;
  pointer-events: none;
  z-index: 10000;
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.6);
  transition: opacity var(--transition-normal),
    transform var(--transition-normal);
  background: rgba(10, 10, 10, 0.85);
  backdrop-filter: blur(12px);
  padding: 10px;
}

.compact-item:hover .publication-image {
  opacity: 1;
  transform: translateX(0) scale(1);
}

body.light-mode .publication-image {
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.4);
  background: rgba(255, 255, 255, 0.85);
}

/* ==========================================================================
   Responsive Design
   ========================================================================== */
@media (max-width: 900px) {
  body {
    padding: 0.75rem;
  }

  .container {
    height: calc(100vh - 1.5rem);
    border-radius: 20px;
    box-shadow: 0 0 0 8px rgba(50, 50, 60, 0.6),
      0 0 0 9px rgba(100, 100, 120, 0.3), 0 0 40px rgba(218, 76, 255, 0.15);
  }

  body.light-mode .container {
    box-shadow: 0 0 0 8px rgba(200, 200, 210, 0.5),
      0 0 0 9px rgba(150, 150, 160, 0.3), 0 0 40px rgba(139, 76, 255, 0.12);
  }

  .content-wrapper {
    padding: var(--spacing-xl) 1.8rem;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }

  header {
    display: grid;
    grid-template-columns: 140px 1fr;
    gap: 1.2rem;
  }

  .profile-section {
    position: relative;
    top: 0;
    display: grid;
    grid-template-columns: 140px 1fr;
    gap: 1.2rem;
    align-items: start;
  }

  .profile-img {
    margin-bottom: 0;
  }

  .project:hover {
    transform: translateX(5px);
    padding-left: var(--spacing-xs);
  }

  .project-header {
    flex-direction: column;
    gap: var(--spacing-md);
  }

  .project-links {
    width: 100%;
  }

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

@media (max-width: 640px) {
  body {
    padding: var(--spacing-xs);
  }

  .container {
    height: calc(100vh - 1rem);
    border-radius: 16px;
  }

  .content-wrapper {
    padding: var(--spacing-lg) 1.2rem;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }

  header {
    display: block;
  }

  .profile-section {
    position: relative;
    top: 0;
    grid-template-columns: 1fr;
    text-align: center;
  }

  h1 {
    font-size: 1.5rem;
  }

  .project:hover {
    transform: none;
    padding-left: 0;
  }

  .theme-toggle {
    top: var(--spacing-md);
    right: var(--spacing-md);
    padding: 0.6rem var(--spacing-sm);
  }
}

/* ==========================================================================
   Scrollbar Styles
   ========================================================================== */
::-webkit-scrollbar {
  width: 0;
  height: 0;
}