/*
  Brutalist Minimal Portfolio Styles
  - Dark mode by default, light mode via .theme-light on :root
  - System font stack w/ monospace accent for headings
  - Minimal transitions, strong borders, ample whitespace
*/

/* CSS Variables */
:root {
  --bg: #0a0a0a;
  --fg: #f7f7f7;
  --muted: #bdbdbd;
  --accent: #39ff14; /* neon green */
  --border: #141414;
  --radius: 16px; /* rounded aesthetic */
  --radius-lg: 28px;
  --space-2xs: 0.5rem; /* 8px */
  --space-xs: 0.75rem; /* 12px */
  --space-sm: 1rem; /* 16px */
  --space: 2rem; /* 32px */
  --space-md: 3rem; /* 48px */
  --space-lg: 6rem; /* 96px */
  --space-xl: 9rem; /* 144px */
  --container: 72.5rem; /* 1160px */
  --easing: cubic-bezier(0.2, 0.8, 0.2, 1);
  --transition-fast: 0.18s var(--easing);
  --transition: 0.28s var(--easing);
  --border-alpha: 0.12;
  --border-alpha-strong: 0.2;
  --bg-shift: 0px;
  --fs-base: 0.9375rem; /* 15px */
  --fs-sm: 0.875rem; /* 14px */
  --fs-lg: 1.125rem; /* 18px */
}

.theme-light {
  --bg: #ffffff;
  --fg: #0b0b0b;
  --muted: #444;
  --accent: #0047ff; /* electric blue */
  --border: #ededed;
}

/* Global Reset-ish */
* {
  box-sizing: border-box;
}
html,
body {
  height: 100%;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: "Cabin", ui-sans-serif, system-ui, -apple-system, Segoe UI,
    Roboto, Inter, Arial, "Helvetica Neue", "Nimbus Sans", "Liberation Sans",
    sans-serif;
  line-height: 1.65;
  font-size: var(--fs-base);
}

/* Subtle parallax gradient background */
body::before {
  content: "";
  position: fixed;
  inset: -50% -50% 0 -50%;
  background: radial-gradient(
      60rem 60rem at 30% 10%,
      rgba(55, 255, 20, 0.173),
      transparent 60%
    ),
    radial-gradient(
      50rem 50rem at 80% 0%,
      rgba(0, 72, 255, 0.177),
      transparent 55%
    ),
    linear-gradient(180deg, rgba(255, 255, 255, 0.181), rgba(0, 0, 0, 0.02));
  transform: translate3d(0, var(--bg-shift), 0);
  pointer-events: none;
  z-index: 0;
}

img {
  max-width: 100%;
  display: block;
}
a {
  color: inherit;
  text-decoration: none;
}

/* Accessibility */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: auto;
}
.skip-link:focus {
  left: 16px;
  top: 16px;
  background: var(--bg);
  color: var(--fg);
  padding: 8px 12px;
  border: 2px solid var(--accent);
}

/* Layout */
.container {
  width: min(100% - 2 * var(--space-md), var(--container));
  margin-inline: auto;
}

.section {
  padding-block: calc(var(--space-xl) + 24px);
  border-top: 1px solid color-mix(in srgb, var(--fg) 12%, transparent 88%);
  position: relative;
  z-index: 1;
}
.section:first-of-type {
  border-top: none;
}

.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space);
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(10, 10, 10, 0.15);
  -webkit-backdrop-filter: saturate(140%) blur(10px);
  backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid color-mix(in srgb, var(--fg) 12%, transparent 88%);
}
.site-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  padding: 1.375rem 3rem; /* 22px 48px */
}
.nav-toggle {
  display: none;
  background: transparent;
  color: var(--fg);
  border: 1px solid color-mix(in srgb, var(--fg) 12%, transparent 88%);
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius);
  font-size: 1.125rem;
  position: relative;
  z-index: 2;
}
.brand {
  font-family: "Montserrat", ui-sans-serif, system-ui, -apple-system, Segoe UI,
    Roboto, Inter, Arial, "Helvetica Neue", sans-serif;
  font-weight: 700; /* smaller font weight */
  letter-spacing: 0.01em;
  border: 1px solid color-mix(in srgb, var(--fg) 78%, transparent 22%);
  padding: 0.75rem 1rem; /* 12px 16px */
  border-radius: var(--radius);
  transition: background-color var(--transition), color var(--transition);
}
.brand:hover {
  background: var(--fg);
  color: var(--bg);
}

.nav-links {
  display: flex;
  gap: var(--space-md);
  list-style: none;
  padding: 0;
  margin: 0;
}
.nav-links a {
  position: relative;
}
.nav-links a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -4px;
  height: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-fast);
}
.nav-links a:hover::after,
.nav-links a:focus-visible::after {
  transform: scaleX(1);
}

.theme-toggle {
  background: transparent;
  color: var(--fg);
  border: 1px solid color-mix(in srgb, var(--fg) 68%, transparent 32%);
  padding: 0.75rem 1rem;
  border-radius: var(--radius);
  cursor: pointer;
  transition: background-color var(--transition), color var(--transition);
}
.theme-toggle:hover {
  background: var(--fg);
  color: var(--bg);
}

/* Hero */
.hero .title {
  font-family: "Montserrat", ui-monospace, Menlo, Consolas, "SFMono-Regular",
    monospace;
  font-size: clamp(2.625rem, 8vw, 6.75rem); /* 42px–108px */
  line-height: 0.95;
  margin: 0 0 12px 0;
}
.subtitle {
  color: var(--muted);
  margin: 0 0 0.625rem 0;
  font-size: var(--fs-sm);
}
.lede {
  max-width: 60ch;
  font-size: 1rem;
}
.hero-cta {
  display: flex;
  gap: var(--space-sm);
  margin-top: var(--space-sm);
  flex-wrap: wrap;
}

/* Hero 3D container */
.hero-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(28rem, 1fr));
  gap: var(--space);
  align-items: center;
}
.hero-copy,
.hero-3d {
  min-width: 0;
}
.hero-3d {
  margin-top: 0;
}
.three-container {
  position: relative;
  width: 100%;
  height: clamp(160px, 40vw, 560px);
  border: 1px solid color-mix(in srgb, var(--fg) 12%, transparent 88%);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: transparent;
}
.three-container canvas {
  display: block;
  width: 100%;
  height: 100%;
  outline: none;
}
.three-preloader {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  color: var(--muted);
  background: linear-gradient(
    180deg,
    rgba(255, 255, 255, 0.02),
    rgba(0, 0, 0, 0.02)
  );
  transition: opacity var(--transition);
}
.three-preloader.is-hidden {
  opacity: 0;
  pointer-events: none;
}

.button {
  display: inline-block;
  background: var(--fg);
  color: var(--bg);
  border: 1px solid rgba(0, 0, 0, 0.12);
  padding: 0.875rem 1.25rem; /* 14px 20px */
  text-transform: uppercase;
  letter-spacing: 0.04em; /* subtler */
  border-radius: var(--radius-lg);
  transition: background-color var(--transition), color var(--transition),
    transform var(--transition-fast);
}
.button:hover {
  background: transparent;
  color: var(--fg);
  transform: translateY(-1px);
}
.button.ghost {
  background: transparent;
  color: var(--fg);
}
.button.ghost:hover {
  background: var(--fg);
  color: var(--bg);
}

button {
  font-family: inherit;
  cursor: pointer;
}

/* About */
.about-media {
  border: 1px solid color-mix(in srgb, var(--fg) 15%, transparent 85%);
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 1 / 1;
}
.about-media img {
  width: 100%;
  height: 100%;
}
.about-copy h2 {
  margin-top: 0;
}
.tags {
  display: flex;
  gap: 10px;
  list-style: none;
  padding: 0;
  margin: var(--space-sm) 0 0;
  flex-wrap: wrap;
}
.tags li {
  border: 1px solid color-mix(in srgb, var(--fg) 15%, transparent 85%);
  padding: 0.5rem 0.75rem;
  border-radius: 999px;
}

/* Projects */
.projects-grid {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  margin-top: var(--space-md);
}
.card {
  border: 1px solid color-mix(in srgb, var(--fg) 15%, transparent 85%);
  background: transparent;
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform var(--transition), border-color var(--transition);
  flex: 1 1 22rem; /* allow 2-4+ per row depending on space */
  max-width: 28rem; /* cap width for comfortable line length and layout */
}
.card:hover {
  transform: translateY(-6px);
  border-color: var(--accent);
}
@media (max-width: 900px) {
  .card {
    flex-basis: 100%;
    max-width: 100%;
  }
}

.card-link {
  display: grid;
  grid-template-rows: auto 1fr;
  height: 100%;
  border-radius: inherit;
  overflow: hidden;
}
.card-media {
  border-bottom: 1px solid color-mix(in srgb, var(--fg) 12%, transparent 88%);
  aspect-ratio: 5/4;
  overflow: hidden;
  display: flex;
  justify-content: center;
  align-items: center;
}
.card-media img {
  width: 85%;
  height: 85%;
  object-fit: contain;
  object-position: center;
  filter: grayscale(70%);
  transform: scale(1.01);
  transition: filter var(--transition), transform var(--transition);
}
.card:hover img {
  filter: grayscale(0%);
  transform: scale(1.03);
}
.card-body {
  padding: 1.25rem;
  display: grid;
  gap: 0.625rem;
}
.underline {
  text-decoration: underline;
  text-decoration-color: var(--accent);
  text-underline-offset: 4px;
}

/* Contact */
.contact-form {
  display: grid;
  gap: var(--space-sm);
  max-width: 40rem;
}
.form-row {
  display: grid;
  gap: 6px;
}
.form-row input,
.form-row textarea {
  background: transparent;
  color: var(--fg);
  border: 1px solid color-mix(in srgb, var(--fg) 15%, transparent 85%);
  padding: 0.875rem 1rem;
  border-radius: var(--radius);
  transition: border-color var(--transition), background-color var(--transition);
  resize: vertical;
}
.form-actions {
  display: flex;
  gap: 12px;
}

/* Social buttons in contact section */
.socials {
  margin-top: var(--space-sm);
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  align-items: flex-start;
}
.socials .muted {
  color: var(--muted);
  margin: 0 0 0.5rem 0;
  font-size: var(--fs-sm);
}
.social-buttons {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}
.social {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.6rem 0.85rem;
  border-radius: 999px;
  background: transparent;
  color: var(--fg);
  border: 1px solid color-mix(in srgb, var(--fg) 18%, transparent 82%);
  font-weight: 600;
  font-size: 0.875rem;
  transition: transform var(--transition-fast),
    background-color var(--transition), color var(--transition),
    border-color var(--transition);
}
.social:hover,
.social:focus-visible {
  transform: translateY(-3px);
  background: var(--fg);
  color: var(--bg);
  border-color: transparent;
}

@media (max-width: 48rem) {
  .socials {
    align-items: stretch;
  }
  .social-buttons {
    justify-content: flex-start;
  }
  .social {
    flex: 1 1 auto;
  }
}

/* Footer */
.site-footer {
  border-top: 1px solid color-mix(in srgb, var(--fg) 12%, transparent 88%);
  padding: calc(var(--space-md) + 0.5rem) 0;
  color: var(--muted);
}

/* Reveal on scroll */
.reveal {
  opacity: 0;
  transform: translateY(0.75rem);
  transition: opacity 0.6s var(--easing), transform 0.6s var(--easing);
  will-change: opacity, transform;
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}
.reveal[data-delay] {
  /* JS sets inline transitionDelay */
}

/* Cursor follower */
.cursor-follower {
  position: fixed;
  left: 0;
  top: 0;
  width: 0.8rem;
  height: 0.8rem;
  border: 2px solid var(--accent);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  pointer-events: none;
  opacity: 0.4;
  mix-blend-mode: difference;
  z-index: 9999;
}
@media (pointer: coarse) {
  .cursor-follower {
    display: none;
  }
}

/* Breakpoints: small (<= 48rem), medium (<= 64rem) */
@media (max-width: 64rem) {
  .grid-2 {
    grid-template-columns: 1fr;
  }
  .projects-grid {
    gap: var(--space);
  }
  .card {
    grid-column: span 6;
  }
  .hero-grid {
    grid-template-columns: 1fr;
  }
}
@media (max-width: 48rem) {
  .site-nav {
    padding: 0.875rem 1.25rem;
  }
  .section {
    padding-block: var(--space-lg);
  }
  .hero .title {
    font-size: clamp(2.25rem, 12vw, 5rem);
  }
  .nav-links {
    gap: var(--space-sm);
  }
  .nav-toggle {
    display: inline-block;
  }
  .site-nav {
    position: relative;
  }
  .nav-links {
    position: absolute;
    top: 120%;
    right: 1.25rem;
    background: rgba(10, 10, 10, 0.9);
    -webkit-backdrop-filter: blur(8px);
    backdrop-filter: blur(8px);
    border: 1px solid color-mix(in srgb, var(--fg) 12%, transparent 88%);
    border-radius: var(--radius);
    padding: 0.5rem;
    display: grid;
    gap: 0.25rem;
    min-width: 12rem;
    opacity: 0;
    transform: translateY(-6px);
    pointer-events: none;
    transition: opacity var(--transition), transform var(--transition);
    z-index: 1;
  }
  .nav-links.is-open {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
  }
  .nav-links li {
    list-style: none;
  }
  .nav-links a {
    display: block;
    padding: 0.5rem 0.75rem;
  }
}

/* Noscript */
.noscript {
  border-top: 2px solid var(--fg);
  border-bottom: 2px solid var(--fg);
  padding: 12px;
  text-align: center;
}