:root {
  color-scheme: light dark;
  --paper: #f8f6f0;
  --paper-translucent: rgba(248, 246, 240, 0.85);
  --ink: #1c2522;
  --muted: #535e58;
  --line: rgba(28, 37, 34, 0.1);
  --focus: #9a4b20;
  --spring: cubic-bezier(0.16, 1, 0.3, 1);

  /* Multi-shade: Tech (Teal/Emerald) */
  --tech-primary: #0f766e;
  --tech-secondary: #14b8a6;
  --tech-bg: #e6f4f1;
  --tech-border: rgba(15, 118, 110, 0.2);
  --tech-glow: rgba(20, 184, 166, 0.15);

  /* Multi-shade: Personal (Warm Terracotta/Amber) */
  --pers-primary: #c2410c;
  --pers-secondary: #ea580c;
  --pers-bg: #fdf2e9;
  --pers-border: rgba(194, 65, 12, 0.2);
  --pers-glow: rgba(234, 88, 12, 0.15);

  /* Project Accents */
  --proj-biggyaan: #4338ca;
  --proj-biggyaan-bg: #eef2ff;
  --proj-neuroyug: #be123c;
  --proj-neuroyug-bg: #fff1f2;
  --proj-cardniti: #047857;
  --proj-cardniti-bg: #ecfdf5;

  --card-shadow: 0 4px 20px -2px rgba(0, 0, 0, 0.05), 0 1px 3px rgba(0, 0, 0, 0.02);
  --card-shadow-hover: 0 16px 36px -4px rgba(0, 0, 0, 0.12), 0 3px 8px rgba(0, 0, 0, 0.04);
}

[data-theme="dark"] {
  color-scheme: dark;
  --paper: #121816;
  --paper-translucent: rgba(18, 24, 22, 0.85);
  --ink: #f0f4f1;
  --muted: #a3b2aa;
  --line: rgba(255, 255, 255, 0.09);
  --focus: #f59e0b;

  --tech-primary: #2dd4bf;
  --tech-secondary: #14b8a6;
  --tech-bg: #132b26;
  --tech-border: rgba(45, 212, 191, 0.25);
  --tech-glow: rgba(45, 212, 191, 0.2);

  --pers-primary: #fb923c;
  --pers-secondary: #f97316;
  --pers-bg: #2d1d16;
  --pers-border: rgba(251, 146, 60, 0.25);
  --pers-glow: rgba(251, 146, 60, 0.2);

  --proj-biggyaan: #a5b4fc;
  --proj-biggyaan-bg: #1e1b4b;
  --proj-neuroyug: #fda4af;
  --proj-neuroyug-bg: #4c0519;
  --proj-cardniti: #6ee7b7;
  --proj-cardniti-bg: #063327;

  --card-shadow: 0 4px 24px -2px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(255, 255, 255, 0.06);
  --card-shadow-hover: 0 18px 42px -4px rgba(0, 0, 0, 0.7), 0 0 0 1px rgba(255, 255, 255, 0.15);
}

* {
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 5rem;
  background-color: var(--paper);
  color: var(--ink);
}

body {
  margin: 0;
  background-color: var(--paper);
  color: var(--ink);
  overflow-wrap: anywhere;
  font: 1rem/1.7 system-ui, -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  transition: background-color 0.3s ease, color 0.3s ease;
}

a {
  color: inherit;
  text-underline-offset: 0.25em;
  text-decoration-thickness: 1px;
  transition: color 0.18s ease, text-decoration-color 0.18s ease;
}

a:hover {
  text-decoration-thickness: 2px;
}

a:focus-visible,
button:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 4px;
  border-radius: 8px;
}

.wrap {
  width: min(1160px, calc(100% - 3.5rem));
  margin-inline: auto;
}

/* Header & Frosted Bar */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  background: var(--paper-translucent);
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding-block: 1rem;
  padding-top: max(1rem, env(safe-area-inset-top));
  transition: background 0.3s ease, border-color 0.3s ease;
}

.wordmark {
  font-size: 1.35rem;
  font-weight: 750;
  letter-spacing: -0.06em;
  text-decoration: none;
  transition: transform 0.2s var(--spring);
}

.wordmark:active {
  transform: scale(0.97);
}

.wordmark span {
  color: var(--tech-primary);
}

nav {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.3rem 0.8rem;
}

nav a {
  font-size: 0.9rem;
  font-weight: 550;
  padding: 0.4rem 0.8rem;
  border-radius: 9999px;
  text-decoration: none;
  min-block-size: 38px;
  display: inline-flex;
  align-items: center;
  transition: background 0.2s var(--spring), transform 0.2s var(--spring);
}

nav a:hover {
  background: color-mix(in srgb, var(--ink) 8%, transparent);
}

nav a:active {
  transform: scale(0.96);
}

/* Theme Toggle Button */
.theme-toggle-btn {
  background: color-mix(in srgb, var(--ink) 7%, transparent);
  border: 1px solid var(--line);
  color: var(--ink);
  cursor: pointer;
  width: 40px;
  height: 40px;
  border-radius: 9999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.15rem;
  padding: 0;
  margin-left: 0.3rem;
  transition: transform 0.2s var(--spring), background-color 0.2s ease, border-color 0.2s ease;
}

.theme-toggle-btn:hover {
  background: color-mix(in srgb, var(--ink) 14%, transparent);
  transform: scale(1.05);
}

.theme-toggle-btn:active {
  transform: scale(0.92);
}

/* Switch icon display based on data-theme */
[data-theme="light"] .theme-icon.light-icon { display: none; }
[data-theme="light"] .theme-icon.dark-icon { display: inline-block; }
[data-theme="dark"] .theme-icon.light-icon { display: inline-block; }
[data-theme="dark"] .theme-icon.dark-icon { display: none; }

/* Hero Section */
.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
  align-items: center;
  gap: 5rem;
  padding-block: 5rem;
}

.eyebrow,
.path-label,
.reading-type {
  display: inline-block;
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-weight: 650;
  color: var(--muted);
}

h1, h2, h3, p, figure {
  margin-top: 0;
}

h1 {
  font-size: clamp(2.6rem, 5vw, 4.4rem);
  line-height: 1.12;
  letter-spacing: -0.055em;
  font-weight: 570;
  margin-bottom: 1.8rem;
  text-wrap: balance;
}

h1 em {
  font-family: Georgia, "Times New Roman", serif;
  font-weight: 400;
  color: var(--tech-primary);
}

.intro {
  font-size: 1.15rem;
  max-width: 43ch;
  color: var(--muted);
  margin-bottom: 2rem;
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 0.9rem;
  margin-left: -0.9rem;
  border-radius: 9999px;
  font-weight: 600;
  text-decoration: none;
  transition: background 0.2s var(--spring), transform 0.2s var(--spring);
}

.text-link:hover {
  background: color-mix(in srgb, var(--tech-primary) 10%, transparent);
}

.text-link:active {
  transform: scale(0.97);
}

.portrait {
  margin: 0;
}

.portrait img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1/1;
  object-fit: cover;
  border-radius: 28px;
  background: var(--tech-bg);
  box-shadow: var(--card-shadow);
  transition: transform 0.3s var(--spring), box-shadow 0.3s var(--spring);
}

.portrait img:hover {
  transform: scale(1.015);
  box-shadow: var(--card-shadow-hover);
}

.portrait figcaption {
  font-size: 0.75rem;
  color: var(--muted);
  margin-top: 0.9rem;
  text-align: center;
}

.section {
  padding-block: 4.5rem;
  border-top: 1px solid var(--line);
  scroll-margin-top: 4rem;
}

h2 {
  font-size: clamp(1.8rem, 3vw, 2.7rem);
  font-weight: 520;
  line-height: 1.2;
  letter-spacing: -0.04em;
  text-wrap: balance;
}

.section-heading {
  max-width: 60ch;
  margin-bottom: 2.5rem;
}

/* =========================================
   RICH MULTI-SHADE CARDS WITH IMAGES
   ========================================= */

.paths {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 2rem;
}

.path {
  display: flex;
  flex-direction: column;
  text-decoration: none;
  border-radius: 22px;
  overflow: hidden;
  box-shadow: var(--card-shadow);
  border: 1px solid var(--line);
  transition: transform 0.25s var(--spring), box-shadow 0.25s var(--spring), border-color 0.25s var(--spring);
}

.path:hover {
  transform: translateY(-5px);
  box-shadow: var(--card-shadow-hover);
}

.path:active {
  transform: scale(0.985);
}

/* Tech Blog Card Styling */
.path.tech {
  background: var(--tech-bg);
  border-color: var(--tech-border);
}

.path.tech:hover {
  border-color: var(--tech-primary);
  box-shadow: 0 16px 36px -4px var(--tech-glow), var(--card-shadow-hover);
}

.path.tech .path-label,
.path.tech .path-destination {
  color: var(--tech-primary);
}

.path.tech .path-chip {
  background: rgba(15, 118, 110, 0.85);
  color: #ffffff;
}

/* Personal Blog Card Styling */
.path.personal {
  background: var(--pers-bg);
  border-color: var(--pers-border);
}

.path.personal:hover {
  border-color: var(--pers-primary);
  box-shadow: 0 16px 36px -4px var(--pers-glow), var(--card-shadow-hover);
}

.path.personal .path-label,
.path.personal .path-destination {
  color: var(--pers-primary);
}

.path.personal .path-chip {
  background: rgba(194, 65, 12, 0.85);
  color: #ffffff;
}

/* Card Media / Image Header */
.path-media {
  position: relative;
  width: 100%;
  height: 200px;
  overflow: hidden;
  background: color-mix(in srgb, var(--ink) 10%, transparent);
}

.path-media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s var(--spring);
}

.path:hover .path-media img {
  transform: scale(1.05);
}

.path-chip {
  position: absolute;
  top: 1rem;
  left: 1rem;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.35rem 0.8rem;
  border-radius: 9999px;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.path-body {
  display: flex;
  flex-direction: column;
  flex-grow: 1;
  padding: 2rem;
}

.path-body h3 {
  font-size: 1.85rem;
  font-weight: 540;
  letter-spacing: -0.03em;
  line-height: 1.25;
  margin-block: 1.2rem 0.8rem;
}

.path-body p {
  color: var(--muted);
  max-width: 43ch;
  line-height: 1.65;
  margin-bottom: 1.5rem;
}

.path-destination {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: auto;
  padding-top: 1rem;
  font-weight: 650;
  font-size: 0.95rem;
  border-top: 1px solid color-mix(in srgb, var(--ink) 8%, transparent);
}

/* Split sections */
.split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.2fr);
  gap: 5rem;
}

.prose {
  max-width: 60ch;
  line-height: 1.8;
}

/* Reading List */
.reading-list {
  border-top: 1px solid var(--line);
}

.reading-list > a {
  display: grid;
  grid-template-columns: 12rem 1fr auto;
  align-items: baseline;
  gap: 1.8rem;
  padding: 1.3rem 1rem;
  border-bottom: 1px solid var(--line);
  border-radius: 14px;
  text-decoration: none;
  transition: background 0.2s var(--spring), transform 0.2s var(--spring);
}

.reading-list > a:hover {
  background: color-mix(in srgb, var(--tech-bg) 50%, transparent);
  transform: translateX(4px);
}

.reading-list > a:active {
  transform: scale(0.99);
}

.reading-list h3 {
  margin: 0;
  font-size: 1.1rem;
  font-weight: 550;
  letter-spacing: -0.01em;
}

.reading-list a:hover h3 {
  text-decoration: underline;
  text-underline-offset: 0.25em;
}

.quiet {
  color: var(--muted);
  font-size: 0.9rem;
  margin: 1.8rem 0 0;
}

/* Projects Section with Multi-Shade Accents */
.projects {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.8rem;
}

.projects article {
  border: 1px solid var(--line);
  padding: 2rem 1.8rem;
  border-radius: 20px;
  box-shadow: var(--card-shadow);
  transition: transform 0.25s var(--spring), box-shadow 0.25s var(--spring), border-color 0.25s ease;
}

.projects article:hover {
  transform: translateY(-4px);
  box-shadow: var(--card-shadow-hover);
}

.projects article:active {
  transform: scale(0.985);
}

.project-biggyaan {
  background: var(--proj-biggyaan-bg);
  border-color: color-mix(in srgb, var(--proj-biggyaan) 25%, transparent);
}
.project-biggyaan:hover { border-color: var(--proj-biggyaan); }
.project-biggyaan .project-index,
.project-biggyaan h3 a { color: var(--proj-biggyaan); }

.project-neuroyug {
  background: var(--proj-neuroyug-bg);
  border-color: color-mix(in srgb, var(--proj-neuroyug) 25%, transparent);
}
.project-neuroyug:hover { border-color: var(--proj-neuroyug); }
.project-neuroyug .project-index,
.project-neuroyug h3 a { color: var(--proj-neuroyug); }

.project-cardniti {
  background: var(--proj-cardniti-bg);
  border-color: color-mix(in srgb, var(--proj-cardniti) 25%, transparent);
}
.project-cardniti:hover { border-color: var(--proj-cardniti); }
.project-cardniti .project-index,
.project-cardniti h3 a { color: var(--proj-cardniti); }

.project-index {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  margin-bottom: 0.4rem;
}

.projects h3 {
  font-size: 1.35rem;
  margin: 0.4rem 0 0.8rem;
  font-weight: 600;
}

.projects h3 a {
  text-decoration: none;
}

.projects p {
  color: var(--muted);
  margin-bottom: 0;
  line-height: 1.6;
}

.contact-email {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 1.4rem;
  margin-bottom: 1rem;
  font-weight: 550;
  padding: 0.5rem 1rem;
  margin-left: -1rem;
  border-radius: 12px;
  text-decoration: none;
  transition: background 0.2s var(--spring), transform 0.2s var(--spring);
}

.contact-email:hover {
  background: color-mix(in srgb, var(--tech-primary) 10%, transparent);
}

.contact-email:active {
  transform: scale(0.98);
}

.site-footer {
  display: flex;
  gap: 1rem 2rem;
  justify-content: space-between;
  flex-wrap: wrap;
  padding-block: 2.2rem;
  padding-bottom: max(2.2rem, env(safe-area-inset-bottom));
  border-top: 1px solid var(--line);
  font-size: 0.85rem;
  color: var(--muted);
}

.site-footer p {
  margin: 0;
}

.skip-link {
  position: fixed;
  left: 1rem;
  top: -10rem;
  padding: 0.8rem 1.2rem;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: var(--card-shadow-hover);
  z-index: 1000;
  transition: top 0.2s var(--spring);
}

.skip-link:focus {
  top: 1rem;
}

@media (max-width: 900px) {
  .wrap {
    width: calc(100% - 3rem);
  }
  .hero {
    gap: 2.5rem;
    padding-block: 3.5rem;
  }
  .split {
    gap: 2.5rem;
  }
  .reading-list > a {
    grid-template-columns: 9rem 1fr auto;
    gap: 1.2rem;
  }
}

@media (max-width: 620px) {
  .wrap {
    width: calc(100% - 2.5rem);
  }
  .site-header {
    align-items: flex-start;
    flex-direction: column;
    gap: 0.8rem;
    padding-block: 1rem;
    padding-top: max(1rem, env(safe-area-inset-top));
  }
  nav {
    width: 100%;
    justify-content: space-between;
    gap: 0.3rem 0.4rem;
  }
  nav a {
    padding: 0.35rem 0.5rem;
    font-size: 0.85rem;
  }
  .theme-toggle-btn {
    width: 36px;
    height: 36px;
    font-size: 1rem;
  }
  .hero {
    grid-template-columns: minmax(0, 1fr);
    gap: 2.5rem;
    padding-block: 2.5rem;
  }
  .portrait {
    max-width: 260px;
  }
  .section {
    padding-block: 3rem;
  }
  .paths,
  .split,
  .projects {
    grid-template-columns: minmax(0, 1fr);
    gap: 1.6rem;
  }
  .path-media {
    height: 180px;
  }
  .path-body {
    padding: 1.5rem;
  }
  .reading-list > a {
    grid-template-columns: 1fr auto;
    gap: 0.3rem 1rem;
    padding: 1rem 0.5rem;
  }
  .reading-type {
    grid-column: 1 / -1;
  }
  .site-footer {
    display: block;
  }
  .site-footer p {
    margin-bottom: 0.5rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}