/* ===========================
   Eric's Site — Stylesheet
   =========================== */

/* === Font === */
@font-face {
  font-family: 'Monocraft';
  src: url('../assets/Monocraft.ttc') format('truetype');
  font-weight: normal;
  font-style: normal;
}

/* === Theme Variables === */
:root {
  --color-bg: #0f0f0f;
  --color-surface: #1a1a1a;
  --color-card: #1e1e1e;
  --color-text: #e0e0e0;
  --color-text-muted: #888;
  --color-accent: #bb86fc;
  --color-accent-hover: #ce9ffc;
  --color-accent-subtle: rgba(187, 134, 252, 0.1);
  --color-border: #2a2a2a;
  --color-shadow: rgba(0, 0, 0, 0.4);
  --color-tag-bg: rgba(187, 134, 252, 0.15);
  --color-tag-text: #bb86fc;
  --toggle-bg: #333;
  --toggle-thumb: #e0e0e0;

  --max-width: 800px;
  --nav-height: 64px;
  --transition-theme: 0.35s ease;
  --transition-fast: 0.2s ease;
}

[data-theme="light"] {
  --color-bg: #f8f8f8;
  --color-surface: #ffffff;
  --color-card: #ffffff;
  --color-text: #1a1a1a;
  --color-text-muted: #666;
  --color-accent: #7c3aed;
  --color-accent-hover: #6d28d9;
  --color-accent-subtle: rgba(124, 58, 237, 0.08);
  --color-border: #e5e5e5;
  --color-shadow: rgba(0, 0, 0, 0.06);
  --color-tag-bg: rgba(124, 58, 237, 0.1);
  --color-tag-text: #7c3aed;
  --toggle-bg: #d4d4d4;
  --toggle-thumb: #1a1a1a;
}

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

/* === Base === */
html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-height) + 2rem);
}

body {
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: 'Monocraft', 'Courier New', monospace;
  font-size: 16px;
  line-height: 1.7;
  min-height: 100vh;
  transition:
    background-color var(--transition-theme),
    color var(--transition-theme);
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-accent-hover);
}

img {
  max-width: 100%;
  height: auto;
}

/* === Navigation === */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2rem;
  z-index: 1000;
  transition:
    background-color var(--transition-theme),
    border-color var(--transition-theme);
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--color-text);
  font-weight: bold;
  font-size: 1.1rem;
  transition: color var(--transition-fast);
}

.nav-brand:hover {
  color: var(--color-accent);
}

.nav-logo {
  width: 36px;
  height: 36px;
  border-radius: 4px;
  image-rendering: pixelated;
}

.nav-center {
  display: flex;
  gap: 2rem;
}

.nav-center a {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  padding: 0.25rem 0;
  position: relative;
  transition: color var(--transition-fast);
}

.nav-center a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-accent);
  transition: width var(--transition-fast);
}

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

.nav-center a:hover::after,
.nav-center a.active::after {
  width: 100%;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

/* === Theme Toggle === */
.theme-switch {
  position: relative;
  width: 52px;
  height: 28px;
  cursor: pointer;
  display: flex;
  align-items: center;
}

.theme-switch input {
  opacity: 0;
  width: 0;
  height: 0;
  position: absolute;
}

.theme-switch .slider {
  position: absolute;
  inset: 0;
  background: var(--toggle-bg);
  border-radius: 28px;
  transition: background var(--transition-theme);
  overflow: hidden;
}

.theme-switch .slider::before {
  content: '';
  position: absolute;
  width: 20px;
  height: 20px;
  left: 4px;
  top: 4px;
  background: var(--toggle-thumb);
  border-radius: 50%;
  transition:
    transform 0.35s cubic-bezier(0.68, -0.55, 0.27, 1.55),
    background var(--transition-theme);
  z-index: 2;
}

.theme-switch input:checked + .slider::before {
  transform: translateX(24px);
}

/* Stars decoration in dark side of toggle */
.theme-switch .slider::after {
  content: '\2726  \2726';
  position: absolute;
  right: 7px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 7px;
  color: rgba(255, 255, 255, 0.5);
  letter-spacing: 2px;
  transition: opacity var(--transition-theme);
  z-index: 1;
}

.theme-switch input:checked + .slider::after {
  opacity: 0;
}

/* === Hamburger Menu === */
.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 28px;
  height: 28px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
}

.menu-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--color-text);
  border-radius: 1px;
  transition:
    transform var(--transition-fast),
    opacity var(--transition-fast),
    background-color var(--transition-theme);
}

.menu-toggle.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.menu-toggle.active span:nth-child(2) {
  opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* === Mobile Menu === */
.mobile-menu {
  display: none;
}

/* === Main Content === */
main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: calc(var(--nav-height) + 3rem) 1.5rem 4rem;
}

/* === Hero Section === */
.hero {
  text-align: center;
  padding: 3rem 0 4rem;
}

.hero-logo {
  width: 120px;
  height: 120px;
  border-radius: 12px;
  margin-bottom: 1.5rem;
  image-rendering: pixelated;
  border: 3px solid var(--color-border);
  transition:
    border-color var(--transition-theme),
    transform var(--transition-fast);
}

.hero-logo:hover {
  transform: rotate(-3deg) scale(1.05);
  border-color: var(--color-accent);
}

.hero h1 {
  font-size: 2.5rem;
  margin-bottom: 0.5rem;
  letter-spacing: -0.5px;
}

.hero .tagline {
  color: var(--color-text-muted);
  font-size: 1.1rem;
  margin-bottom: 1.5rem;
  transition: color var(--transition-theme);
}

.hero .bio {
  color: var(--color-text-muted);
  max-width: 500px;
  margin: 0 auto 2rem;
  line-height: 1.8;
  transition: color var(--transition-theme);
}

/* === Social Links === */
.social-links {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.social-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--color-text-muted);
  padding: 0.5rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  font-size: 0.85rem;
  transition:
    color var(--transition-fast),
    border-color var(--transition-fast),
    background-color var(--transition-fast);
}

.social-link:hover {
  color: var(--color-accent);
  border-color: var(--color-accent);
  background: var(--color-accent-subtle);
}

/* === Section Headers === */
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.5rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--color-border);
  transition: border-color var(--transition-theme);
}

.section-header h2 {
  font-size: 1.3rem;
}

.section-header a {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

/* === Blog Post Cards === */
.posts-grid {
  display: grid;
  gap: 1.25rem;
}

.post-card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 1.5rem;
  transition:
    background-color var(--transition-theme),
    border-color var(--transition-fast),
    transform var(--transition-fast),
    box-shadow var(--transition-fast);
}

.post-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px var(--color-shadow);
}

.post-card .post-date {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-bottom: 0.5rem;
  display: block;
  transition: color var(--transition-theme);
}

.post-card h3 {
  margin-bottom: 0.5rem;
  font-size: 1.1rem;
}

.post-card h3 a {
  color: var(--color-text);
  transition: color var(--transition-fast);
}

.post-card h3 a:hover {
  color: var(--color-accent);
}

.post-card .post-excerpt {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  line-height: 1.6;
  margin-bottom: 0.75rem;
  transition: color var(--transition-theme);
}

.post-tags {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.tag {
  font-size: 0.75rem;
  padding: 0.2rem 0.6rem;
  background: var(--color-tag-bg);
  color: var(--color-tag-text);
  border-radius: 4px;
  transition:
    background-color var(--transition-theme),
    color var(--transition-theme);
}

/* === Page Header === */
.page-header {
  margin-bottom: 2.5rem;
}

.page-header h1 {
  font-size: 2rem;
  margin-bottom: 0.5rem;
}

.page-header p {
  color: var(--color-text-muted);
  transition: color var(--transition-theme);
}

/* === About Page === */
.about-content {
  line-height: 1.8;
}

.about-content h1 {
  font-size: 2rem;
  margin-bottom: 1.5rem;
}

.about-content h2 {
  font-size: 1.3rem;
  margin-top: 2.5rem;
  margin-bottom: 1rem;
  color: var(--color-accent);
  transition: color var(--transition-theme);
}

.about-content p {
  margin-bottom: 1rem;
  color: var(--color-text-muted);
  transition: color var(--transition-theme);
}

.about-content ul {
  list-style: none;
  margin-bottom: 1rem;
}

.about-content li {
  padding: 0.3rem 0;
  color: var(--color-text-muted);
  transition: color var(--transition-theme);
}

.about-content li::before {
  content: '> ';
  color: var(--color-accent);
}

/* === Blog Post Page === */
.post-content {
  line-height: 1.8;
}

.post-content .post-meta {
  color: var(--color-text-muted);
  font-size: 0.85rem;
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--color-border);
  transition:
    color var(--transition-theme),
    border-color var(--transition-theme);
}

.post-content h1 {
  font-size: 2rem;
  margin-bottom: 0.5rem;
}

.post-content h2 {
  font-size: 1.4rem;
  margin-top: 2.5rem;
  margin-bottom: 1rem;
}

.post-content p {
  margin-bottom: 1rem;
  color: var(--color-text-muted);
  transition: color var(--transition-theme);
}

.post-content code {
  background: var(--color-surface);
  padding: 0.15rem 0.4rem;
  border-radius: 3px;
  font-size: 0.9em;
  border: 1px solid var(--color-border);
  transition:
    background-color var(--transition-theme),
    border-color var(--transition-theme);
}

.post-content pre {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  padding: 1.25rem;
  overflow-x: auto;
  margin-bottom: 1.5rem;
  transition:
    background-color var(--transition-theme),
    border-color var(--transition-theme);
}

.post-content pre code {
  background: none;
  border: none;
  padding: 0;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 2rem;
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

.back-link:hover {
  color: var(--color-accent);
}

/* === Empty State === */
.empty-state {
  text-align: center;
  padding: 4rem 1rem;
  color: var(--color-text-muted);
}

.empty-state .empty-icon {
  font-size: 2.5rem;
  margin-bottom: 1rem;
  opacity: 0.5;
}

.empty-state p {
  font-size: 0.95rem;
}

/* === Footer === */
footer {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2rem 1.5rem;
  text-align: center;
  border-top: 1px solid var(--color-border);
  color: var(--color-text-muted);
  font-size: 0.8rem;
  transition:
    border-color var(--transition-theme),
    color var(--transition-theme);
}

/* === Responsive — Tablet & Mobile === */
@media (max-width: 768px) {
  .nav-center {
    display: none;
  }

  .menu-toggle {
    display: flex;
  }

  .mobile-menu {
    display: block;
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    padding: 0 2rem;
    z-index: 999;
    max-height: 0;
    overflow: hidden;
    transition:
      max-height 0.3s ease,
      padding 0.3s ease,
      background-color var(--transition-theme),
      border-color var(--transition-theme);
  }

  .mobile-menu.open {
    max-height: 300px;
    padding: 1rem 2rem;
  }

  .mobile-menu a {
    display: block;
    color: var(--color-text-muted);
    padding: 0.75rem 0;
    font-size: 1rem;
    border-bottom: 1px solid var(--color-border);
    transition:
      color var(--transition-fast),
      border-color var(--transition-theme);
  }

  .mobile-menu a:last-child {
    border-bottom: none;
  }

  .mobile-menu a:hover,
  .mobile-menu a.active {
    color: var(--color-accent);
  }

  .hero h1 {
    font-size: 2rem;
  }

  .hero .tagline {
    font-size: 1rem;
  }

  .social-links {
    gap: 0.75rem;
  }

  .social-link {
    font-size: 0.8rem;
    padding: 0.4rem 0.75rem;
  }

  main {
    padding: calc(var(--nav-height) + 2rem) 1rem 3rem;
  }
}

@media (max-width: 480px) {
  .hero {
    padding: 2rem 0 3rem;
  }

  .hero h1 {
    font-size: 1.75rem;
  }

  .hero-logo {
    width: 90px;
    height: 90px;
  }

  .post-card {
    padding: 1.25rem;
  }

  .navbar {
    padding: 0 1rem;
  }

  .social-links {
    flex-direction: column;
    align-items: center;
  }

  .social-link {
    width: 100%;
    justify-content: center;
  }
}