@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

:root {
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", Roboto, sans-serif;
  --transition-smooth: 0.5s cubic-bezier(0.22, 1, 0.36, 1);
  --transition-fast: 0.2s cubic-bezier(0.22, 1, 0.36, 1);

  --blur-nav: blur(20px);
  --border-radius-sm: 12px;
  --border-radius-md: 24px;
  --border-radius-lg: 32px;
  --container-width: 1100px;
}

[data-theme="dark"] {
  --bg-app: #030303;
  /* Deep pure black */
  --bg-card: #0a0a0a;
  /* Almost black */
  --bg-card-hover: #111111;
  --text-main: #ffffff;
  --text-muted: #888888;
  --border-subtle: rgba(255, 255, 255, 0.1);
  --border-focus: rgba(255, 255, 255, 0.2);
  --nav-glass: rgba(3, 3, 3, 0.6);
  --accent-glow: rgba(255, 255, 255, 0.05);
  --shadow-card: 0 10px 40px -10px rgba(0, 0, 0, 0.8);
  --inner-highlight: inset 0 1px 0 0 rgba(255, 255, 255, 0.05);
  /* Top edge light */
}

[data-theme="light"] {
  --bg-app: #f9f9f9;
  --bg-card: #ffffff;
  --bg-card-hover: #f5f5f5;
  --text-main: #111111;
  --text-muted: #666666;
  --border-subtle: rgba(0, 0, 0, 0.06);
  --border-focus: rgba(0, 0, 0, 0.15);
  --nav-glass: rgba(249, 249, 249, 0.8);
  --accent-glow: rgba(0, 0, 0, 0.03);
  --shadow-card: 0 10px 40px -10px rgba(0, 0, 0, 0.05);
  --inner-highlight: inset 0 1px 0 0 rgba(255, 255, 255, 0.8);
}

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

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

body {
  font-family: var(--font-family);
  background-color: var(--bg-app);
  color: var(--text-main);
  line-height: 1.6;
  overflow-x: hidden;
  transition: background-color var(--transition-smooth);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  position: relative;
  /* Premium Linear Grid Graphic Background */
  background-image:
    linear-gradient(to right, var(--border-subtle) 1px, transparent 1px),
    linear-gradient(to bottom, var(--border-subtle) 1px, transparent 1px);
  background-size: 40px 40px;
  background-attachment: fixed;
}

/* Screen Top Radial Glow Array */
body::before {
  content: "";
  position: fixed;
  top: -20vh;
  left: 20vw;
  width: 60vw;
  height: 40vh;
  background: radial-gradient(ellipse at center, var(--accent-glow) 0%, transparent 70%);
  filter: blur(60px);
  z-index: -1;
  pointer-events: none;
}

main {
  flex-grow: 1;
  padding-top: 120px;
  padding-bottom: 80px;
}

/* Exacting Typography */
h1,
h2,
h3,
h4 {
  font-weight: 600;
  line-height: 1.05;
  letter-spacing: -0.04em;
}

h1 {
  font-size: clamp(3rem, 7vw, 5rem);
  margin-bottom: 24px;
  font-weight: 700;
}

h2 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  margin-bottom: 24px;
  color: var(--text-muted);
  font-weight: 500;
}

h3 {
  font-size: 1.5rem;
  letter-spacing: -0.03em;
  margin-bottom: 12px;
}

p {
  color: var(--text-muted);
  font-size: 1.1rem;
  font-weight: 400;
  letter-spacing: -0.01em;
}

a {
  text-decoration: none;
  color: inherit;
}

/* Cinematic Shimmers */
.text-shimmer {
  background: linear-gradient(to right, var(--text-main) 0%, var(--text-muted) 50%, var(--text-main) 100%);
  background-size: 200% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: shimmer 4s cubic-bezier(0.22, 1, 0.36, 1) infinite;
}

@keyframes shimmer {
  to {
    background-position: 200% center;
  }
}

.container {
  width: 90%;
  max-width: var(--container-width);
  margin: 0 auto;
}

/* Ultra Clean Navigation */
#navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background: var(--nav-glass);
  backdrop-filter: var(--blur-nav);
  -webkit-backdrop-filter: var(--blur-nav);
  border-bottom: 1px solid var(--border-subtle);
  z-index: 1000;
}

#navbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 72px;
}

.logo {
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: -0.05em;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 12px;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 36px;
  list-style: none;
}

.nav-menu a {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: color var(--transition-fast);
  position: relative;
}

.nav-menu a:hover,
.nav-menu a.active {
  color: var(--text-main);
}

/* Subtle Active Underline */
.nav-menu a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -6px;
  width: 100%;
  height: 2px;
  background: var(--text-main);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform var(--transition-smooth);
}

.nav-menu a:hover::after,
.nav-menu a.active::after {
  transform: scaleX(1);
  transform-origin: left;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.theme-toggle {
  background: none;
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  cursor: pointer;
  display: grid;
  place-items: center;
  transition: all var(--transition-fast);
  box-shadow: var(--inner-highlight);
}

.theme-toggle:hover {
  color: var(--text-main);
  border-color: var(--border-focus);
  transform: translateY(-1px);
}

.hamburger {
  display: none;
  background: none;
  border: none;
  width: 24px;
  height: 24px;
  cursor: pointer;
  position: relative;
  z-index: 1001;
}

.hamburger .bar {
  display: block;
  position: absolute;
  width: 100%;
  height: 2px;
  background: var(--text-main);
  border-radius: 2px;
  transition: var(--transition-fast);
}

.hamburger .bar:nth-child(1) {
  top: 4px;
}

.hamburger .bar:nth-child(2) {
  top: 11px;
}

.hamburger .bar:nth-child(3) {
  top: 18px;
}

.hamburger.active .bar:nth-child(1) {
  top: 11px;
  transform: rotate(45deg);
}

.hamburger.active .bar:nth-child(2) {
  opacity: 0;
}

.hamburger.active .bar:nth-child(3) {
  top: 11px;
  transform: rotate(-45deg);
}

/* The 9.5/10 Bento Grid System */
.bento-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  grid-auto-rows: minmax(min-content, max-content);
  gap: 20px;
}

/* Card Mastery */
.card {
  position: relative;
  background-color: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--border-radius-md);
  padding: 40px;
  overflow: hidden;
  box-shadow: var(--shadow-card), var(--inner-highlight);
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-smooth), border-color var(--transition-smooth);
  z-index: 1;
}

/* True Spotlight Tracker */
.card::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: radial-gradient(600px circle at var(--mouse-x) var(--mouse-y),
      var(--border-focus),
      transparent 40%);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.5s ease;
  z-index: 2;
}

.card:hover {
  transform: scale(0.995) translateY(-2px);
  border-color: transparent;
  /* Lets the spotlight border shine */
}

.card:hover::before {
  opacity: 1;
}

.span-4 {
  grid-column: span 4;
}

.span-6 {
  grid-column: span 6;
}

.span-8 {
  grid-column: span 8;
}

.span-12 {
  grid-column: span 12;
}

/* Core Elements */
.profile-wrap {
  width: 100%;
  aspect-ratio: 1;
  border-radius: calc(var(--border-radius-md) - 8px);
  overflow: hidden;
  border: 1px solid var(--border-subtle);
}

.profile-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(20%);
  transition: var(--transition-smooth);
}

.card:hover .profile-wrap img {
  filter: grayscale(0%);
  transform: scale(1.05);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 16px 32px;
  border-radius: 999px;
  font-weight: 500;
  font-size: 1.05rem;
  letter-spacing: -0.01em;
  cursor: pointer;
  transition: all var(--transition-fast);
  border: 1px solid transparent;
}

.primary-btn {
  background: var(--text-main);
  color: var(--bg-app);
  box-shadow: 0 4px 14px 0 rgba(255, 255, 255, 0.1);
}

.primary-btn:hover {
  transform: scale(1.02);
  opacity: 0.9;
}

.secondary-btn {
  background: transparent;
  color: var(--text-main);
  border-color: var(--border-subtle);
  backdrop-filter: blur(10px);
}

.secondary-btn:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-focus);
}

/* High-End Pills */
.tech-pill {
  display: inline-flex;
  align-items: center;
  padding: 8px 16px;
  background: transparent;
  border: 1px solid var(--border-subtle);
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: var(--transition-fast);
  letter-spacing: -0.01em;
}

.tech-pill:hover,
.card:hover .tech-pill {
  border-color: var(--text-muted);
  color: var(--text-main);
}

/* Animations */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(24px) scale(0.98);
  transition: opacity 0.8s cubic-bezier(0.22, 1, 0.36, 1), transform 0.8s cubic-bezier(0.22, 1, 0.36, 1);
}

.animate-on-scroll.visible {
  opacity: 1;
  transform: translateY(0) scale(1);
}

/* Exacting Footer */
.footer {
  border-top: 1px solid var(--border-subtle);
  padding: 60px 0;
  margin-top: 60px;
  background: var(--bg-app);
}

.footer-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 32px;
}

.footer-socials {
  display: flex;
  gap: 16px;
}

.footer-socials a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
  font-size: 1.1rem;
  transition: all var(--transition-smooth);
  box-shadow: var(--inner-highlight);
}

.footer-socials a:hover {
  color: var(--bg-app);
  background: var(--text-main);
  transform: scale(1.1);
  border-color: var(--text-main);
}

/* Form refinement */
.form-control {
  width: 100%;
  border-radius: var(--border-radius-sm);
  border: 1px solid var(--border-subtle);
  background: var(--bg-app);
  color: var(--text-main);
  padding: 16px 20px;
  font-family: var(--font-family);
  font-size: 1rem;
  outline: none;
  transition: var(--transition-fast);
  box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.2);
}

.form-control:focus {
  border-color: var(--text-muted);
  background: var(--bg-card-hover);
}

/* Responsive Scaling */
@media (max-width: 1024px) {
  .span-4 {
    grid-column: span 6;
  }

  .span-6 {
    grid-column: span 12;
  }

  .span-8 {
    grid-column: span 12;
  }
}

@media (max-width: 768px) {
  .hamburger {
    display: block;
  }

  .nav-menu {
    position: fixed;
    top: 72px;
    left: 0;
    width: 100%;
    background: var(--bg-app);
    flex-direction: column;
    padding: 32px 0;
    border-bottom: 1px solid var(--border-subtle);
    clip-path: inset(0 0 100% 0);
    transition: clip-path 0.5s cubic-bezier(0.22, 1, 0.36, 1);
  }

  .nav-menu.active {
    clip-path: inset(0 0 0 0);
  }

  .bento-grid {
    display: flex;
    flex-direction: column;
  }

  .card {
    padding: 32px 24px;
  }
}