/**
 * Naman Goyal - Clean Minimal Monochrome Portfolio
 * Zero Bloat | Pure Function | 60 FPS Canvas 2D Particle Background
 */

@property --accent-color {
  syntax: '<color>';
  inherits: true;
  initial-value: #d4a359;
}

:root {
  --bg: #050505;
  --bg-subtle: #0d0d0d;
  --bg-surface: #121212;

  --border-dim: #1c1c1c;
  --border-mid: #2a2a2a;
  --border-bright: #444444;

  --text-primary: #f0f0f0;
  --text-secondary: #a1a1aa;
  --text-muted: #666666;

  --accent-color: #d4a359;

  --font-mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;

  --max-w: 1080px;
  --transition-fast: 100ms ease;

  animation: accent-var-cycle 15s infinite ease-in-out;
}

/* Calm, non-gamery desaturated engineering palette (15s gentle cycle) */
@keyframes accent-var-cycle {
  0%   { --accent-color: #d4a359; } /* Warm Brass / Amber (0s) */
  20%  { --accent-color: #5ea885; } /* Technical Sage Green (3s) */
  40%  { --accent-color: #5a97af; } /* Nordic Slate Blue (6s) */
  60%  { --accent-color: #8182b8; } /* Muted Iris / Lavender (9s) */
  80%  { --accent-color: #be7454; } /* Warm Terracotta (12s) */
  100% { --accent-color: #d4a359; } /* Warm Brass / Amber (15s) */
}

@keyframes accent-color-cycle {
  0%   { color: #d4a359; }
  20%  { color: #5ea885; }
  40%  { color: #5a97af; }
  60%  { color: #8182b8; }
  80%  { color: #be7454; }
  100% { color: #d4a359; }
}

@keyframes accent-border-cycle {
  0%   { border-color: rgba(212, 163, 89, 0.4); }
  20%  { border-color: rgba(94, 168, 133, 0.4); }
  40%  { border-color: rgba(90, 151, 175, 0.4); }
  60%  { border-color: rgba(129, 130, 184, 0.4); }
  80%  { border-color: rgba(190, 116, 84, 0.4); }
  100% { border-color: rgba(212, 163, 89, 0.4); }
}

.accent-text {
  color: var(--accent-color, #d4a359);
  animation: accent-color-cycle 15s infinite ease-in-out;
}

strong, b {
  color: #ffffff !important;
  font-weight: 600;
}

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

html {
  font-size: 15px;
  scroll-behavior: smooth;
  scroll-padding-top: 4.5rem;
  background-color: var(--bg);
  color: var(--text-primary);
  font-family: var(--font-mono);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

body {
  min-height: 100vh;
  background-color: transparent;
  color: var(--text-secondary);
  overflow-x: hidden;
}

#bg-canvas {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  z-index: -1;
  pointer-events: none;
  background: var(--bg);
}

@media (max-width: 768px) {
  #bg-canvas {
    display: none !important;
  }
}

a {
  color: var(--text-primary);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: var(--border-bright);
  transition: all var(--transition-fast);
}

a:hover, a:focus-visible {
  color: #ffffff;
  text-decoration-color: var(--accent-color);
}

::selection {
  background-color: #ffffff;
  color: #000000;
}

.container {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Header & Nav */
.site-header {
  border-bottom: 1px solid var(--border-dim);
  background-color: rgba(5, 5, 5, 0.88);
  position: sticky;
  top: 0;
  z-index: 90;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 0.85rem;
  padding-bottom: 0.85rem;
}

.site-brand {
  font-weight: 700;
  font-size: 0.95rem;
  text-decoration: none !important;
  color: var(--text-primary);
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 1.25rem;
  align-items: center;
}

.nav-links a {
  color: var(--text-secondary);
  font-size: 0.82rem;
  text-decoration: none;
  padding: 0.2rem 0;
  border-bottom: 2px solid transparent;
  transition: all var(--transition-fast);
}

.nav-links a:hover {
  color: #ffffff;
  border-bottom-color: var(--accent-color);
}

.nav-links a.active {
  color: #ffffff;
  border-bottom-color: var(--accent-color);
}

.nav-resume-btn {
  border: 1px solid var(--border-mid);
  padding: 0.25rem 0.6rem;
  color: var(--text-primary) !important;
  font-size: 0.8rem;
}

.nav-resume-btn:hover {
  background-color: #ffffff;
  color: #000000 !important;
}

.nav-cmd-btn {
  background: transparent;
  border: 1px solid var(--border-dim);
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 0.25rem 0.55rem;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  line-height: 1;
  transition: all var(--transition-fast);
}

.nav-cmd-btn:hover {
  color: #ffffff;
  border-color: var(--accent-color);
  background-color: rgba(255, 255, 255, 0.06);
}

.mobile-nav-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--border-mid);
  color: var(--text-primary);
  padding: 0.25rem 0.55rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  cursor: pointer;
}

/* Section Common */
.section {
  padding: 3rem 0;
  border-bottom: 1px solid var(--border-dim);
}

.section:last-of-type {
  border-bottom: none;
}

.section h2 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 1.5rem;
  letter-spacing: -0.01em;
}

/* About / Hero */
.hero-name {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.2;
  margin-bottom: 0.4rem;
}

.hero-subtitle {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 1.25rem;
}

.hero-text {
  font-family: var(--font-sans);
  font-size: 1.05rem;
  line-height: 1.65;
  color: var(--text-primary);
  margin-bottom: 1.5rem;
}

.hero-text p + p {
  margin-top: 0.75rem;
  color: var(--text-secondary);
  font-size: 0.98rem;
}

.hero-text strong {
  font-weight: 600;
  color: #ffffff;
}

.hero-actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.btn {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  padding: 0.5rem 1rem;
  border: 1px solid var(--border-mid);
  background-color: var(--bg-surface);
  color: var(--text-primary);
  cursor: pointer;
  text-decoration: none !important;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  transition: all var(--transition-fast);
}

.btn:hover {
  background-color: rgba(255, 255, 255, 0.05);
  color: #ffffff;
  border-color: var(--accent-color);
}

.btn-primary {
  background-color: #ffffff;
  color: #000000;
  border-color: #ffffff;
  font-weight: 600;
}

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

.btn-sm {
  font-size: 0.75rem;
  padding: 0.25rem 0.6rem;
}

/* Experience */
.exp-list {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.exp-item {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  padding: 1.25rem;
  border: 1px solid var(--border-dim);
  background-color: rgba(10, 10, 10, 0.45);
  transition: border-color var(--transition-fast);
}

.exp-item:hover {
  border-color: var(--border-mid);
}

.exp-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.exp-role {
  font-size: 1.1rem;
  font-weight: 700;
  color: #ffffff;
}

.exp-company {
  font-family: var(--font-mono);
  color: var(--text-secondary);
  font-size: 0.82rem;
  margin-top: 0.2rem;
}

.exp-date {
  font-size: 0.8rem;
  color: var(--text-muted);
  white-space: nowrap;
}

.exp-bullets {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-top: 0.25rem;
}

.exp-bullets li {
  font-family: var(--font-sans);
  font-size: 0.92rem;
  line-height: 1.6;
  color: var(--text-secondary);
  padding-left: 1.45rem;
  position: relative;
}

.exp-bullets li::before {
  content: "↳";
  position: absolute;
  left: 0;
  top: 0;
  font-family: var(--font-mono);
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--text-muted);
}

.exp-bullets li strong {
  color: #ffffff;
  font-weight: 600;
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-top: 0.5rem;
}

.skill-tag {
  border: 1px solid var(--border-dim);
  background-color: var(--bg-surface);
  color: var(--text-muted);
  font-size: 0.72rem;
  padding: 0.18rem 0.5rem;
  font-family: var(--font-mono);
  transition: all var(--transition-fast);
}

.skill-tag.accent-tag {
  color: var(--accent-color, #d4a359);
  border-color: rgba(212, 163, 89, 0.4);
  background-color: rgba(255, 255, 255, 0.02);
  animation: accent-color-cycle 15s infinite ease-in-out, accent-border-cycle 15s infinite ease-in-out;
}

/* Projects */
.filter-row {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 1.5rem;
}

.filter-btn {
  background: transparent;
  border: 1px solid var(--border-dim);
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  padding: 0.3rem 0.65rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.filter-btn:hover {
  color: var(--text-primary);
  border-color: var(--border-mid);
}

.filter-btn.active {
  background: #ffffff;
  color: #000000;
  border-color: #ffffff;
  font-weight: 700;
}

.project-list,
.projects-list {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.project-item {
  border: 1px solid var(--border-dim);
  background-color: rgba(10, 10, 10, 0.45);
  padding: 1.25rem;
  transition: border-color var(--transition-fast);
}

.project-item:hover {
  border-color: var(--border-mid);
}

.project-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 0.4rem;
}

.project-name {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
}

.project-meta {
  font-size: 0.78rem;
  color: var(--text-muted);
}

.project-desc {
  font-family: var(--font-sans);
  font-size: 0.92rem;
  line-height: 1.55;
  color: var(--text-secondary);
  margin-bottom: 0.75rem;
}

.project-links {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
  margin-top: 0.75rem;
}

/* Skills Grid */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.skill-category h3 {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.skill-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.skill-pill {
  border: 1px solid var(--border-dim);
  background-color: var(--bg-surface);
  color: var(--text-secondary);
  font-size: 0.78rem;
  padding: 0.2rem 0.5rem;
}

/* Certifications */
.certs-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.85rem;
  margin-top: 1.5rem;
}

.cert-box {
  border: 1px solid var(--border-dim);
  background-color: rgba(10, 10, 10, 0.6);
  padding: 0.85rem 1rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.cert-name {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--text-primary);
}

.cert-org {
  font-size: 0.78rem;
  color: var(--text-secondary);
  margin: 0.2rem 0 0.5rem 0;
}

/* Contact */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}

.contact-channels {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.contact-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.65rem 0.85rem;
  border: 1px solid var(--border-dim);
  background-color: rgba(10, 10, 10, 0.6);
}

.contact-lbl {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.contact-val {
  font-size: 0.85rem;
  color: var(--text-primary);
}

.form-group {
  margin-bottom: 0.85rem;
}

.form-group label {
  display: block;
  font-size: 0.75rem;
  color: var(--text-secondary);
  margin-bottom: 0.3rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.form-input,
.form-textarea {
  width: 100%;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-mid);
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  padding: 0.55rem 0.75rem;
  border-radius: 0;
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: #ffffff;
}

.form-textarea {
  min-height: 100px;
  resize: vertical;
}

.form-status {
  margin-top: 0.6rem;
  font-size: 0.8rem;
  display: none;
  padding: 0.5rem 0.75rem;
}

.form-status.success {
  display: block;
  border: 1px solid #ffffff;
  background-color: #111111;
  color: #ffffff;
}

.form-status.error {
  display: block;
  border: 1px solid var(--border-bright);
  background-color: #1a0a0a;
  color: #ffaaaa;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--border-dim);
  padding: 2rem 0;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.footer-flex {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-meta {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  flex-wrap: wrap;
}

.footer-cmd-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  cursor: pointer;
  padding: 0;
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  transition: color var(--transition-fast);
}

.footer-cmd-btn:hover {
  color: var(--text-primary);
}

.footer-cmd-btn kbd,
.palette-esc-badge,
.palette-footer-hint kbd {
  font-family: inherit;
  background-color: #121212;
  border: 1px solid var(--border-mid);
  padding: 0.1rem 0.35rem;
  font-size: 0.7rem;
  color: var(--text-primary);
  line-height: 1;
}

.footer-links {
  display: flex;
  gap: 1.25rem;
}

/* Lightbox Modal */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.94);
  z-index: 1000;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  backdrop-filter: blur(4px);
}

.modal-overlay.open {
  display: flex;
}

.modal-box {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-mid);
  max-width: 860px;
  width: 100%;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
}

.modal-head {
  padding: 0.65rem 0.85rem;
  border-bottom: 1px solid var(--border-dim);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.82rem;
}

.modal-stage {
  padding: 1rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  overflow-y: auto;
}

.modal-img-wrap {
  width: 100%;
  max-height: 480px;
  display: flex;
  justify-content: center;
  align-items: center;
  background-color: var(--bg);
  border: 1px solid var(--border-dim);
  margin-bottom: 0.75rem;
}

.modal-img-wrap img {
  max-width: 100%;
  max-height: 480px;
  object-fit: contain;
}

.modal-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  gap: 0.5rem;
}

.modal-thumbs {
  display: flex;
  gap: 0.4rem;
  overflow-x: auto;
  max-width: 70%;
  padding: 0.35rem 0;
}

.modal-thumb {
  width: 44px;
  height: 44px;
  border: 1px solid var(--border-dim);
  object-fit: cover;
  cursor: pointer;
  opacity: 0.5;
}

.modal-thumb.active {
  border-color: #ffffff;
  opacity: 1;
}

/* Command Palette */
.palette-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.88);
  z-index: 1100;
  align-items: flex-start;
  justify-content: center;
  padding-top: 14vh;
}

.palette-overlay.open {
  display: flex;
}

.palette-box {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-bright);
  width: 100%;
  max-width: 520px;
}

.palette-input-line {
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--border-dim);
  padding: 0.75rem 0.9rem;
  gap: 0.5rem;
}

.palette-prompt {
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.95rem;
}

.palette-input {
  flex: 1;
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 0.9rem;
}

.palette-input:focus {
  outline: none;
}

.palette-esc-badge {
  color: var(--text-muted);
}

.palette-results {
  list-style: none;
  max-height: 260px;
  overflow-y: auto;
  padding: 0.4rem;
}

.palette-item {
  padding: 0.5rem 0.75rem;
  color: var(--text-secondary);
  font-size: 0.82rem;
  cursor: pointer;
}

.palette-item:hover,
.palette-item.active {
  background-color: #ffffff;
  color: #000000;
}

.palette-footer-hint {
  display: flex;
  justify-content: flex-end;
  gap: 0.9rem;
  padding: 0.5rem 0.9rem;
  border-top: 1px solid var(--border-dim);
  font-size: 0.72rem;
  color: var(--text-muted);
  background-color: rgba(0, 0, 0, 0.4);
}

/* Responsive */
@media (max-width: 800px) {
  .skills-grid {
    grid-template-columns: 1fr;
  }
  .certs-grid {
    grid-template-columns: 1fr;
  }
  .contact-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  html {
    font-size: 14px;
  }
  .mobile-nav-toggle {
    display: block;
  }
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background-color: var(--bg-surface);
    border-bottom: 1px solid var(--border-dim);
    flex-direction: column;
    padding: 1rem 1.5rem;
    gap: 0.85rem;
    align-items: flex-start;
  }
  .nav-links.open {
    display: flex;
  }
}

/* Print */
@media print {
  #bg-canvas,
  .site-header,
  .hero-actions,
  .filter-row,
  .project-links,
  .modal-overlay,
  .palette-overlay,
  .site-footer {
    display: none !important;
  }
  body {
    background: #ffffff !important;
    color: #000000 !important;
  }
  .container {
    max-width: 100% !important;
    padding: 0 !important;
  }
}