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

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

img {
  display: block;
  max-width: 100%;
}

:root {
  /* Color Palette - Light Mode */
  --color-bg: #f5f2ee;
  --color-text: #1a1a1a;
  --color-muted: #737373;
  --color-accent: #2e5c8a;
  --color-border: #e2dfda;
  --color-hover-bg: #eae7e1;

  --font-mono: "JetBrains Mono", monospace;
  --font-body: "Inter", sans-serif;
  --font-heading: "Space Grotesk", sans-serif;

  --space-xs: 0.5rem;
  --space-sm: 0.75rem;
  --space-md: 1.25rem;
  --space-lg: 2rem;
  --space-xl: 3.5rem;

  --radius: 8px;
  --transition: 0.3s ease;
}

[data-theme="dark"] body {
  /* Color Palette - Dark Mode */
  --color-bg: #121212;
  --color-text: #e0e0e0;
  --color-muted: #888888;
  --color-accent: #5c8ab8;
  --color-border: #2a2a2a;
  --color-hover-bg: #1a1a1a;
}

body {
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  line-height: 1.6;
  transition:
    background-color var(--transition),
    color var(--transition);
}

.layout {
  display: flex;
  min-height: 100vh;
}

/* Sidebar / Identity Panel */
.identity-panel {
  width: 260px;
  min-width: 260px;
  padding: var(--space-xl) var(--space-lg);
  position: sticky;
  top: 0;
  height: 100vh;
  border-right: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  background-color: var(--color-bg);
  transition:
    background-color var(--transition),
    border-color var(--transition);
}

.identity-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: var(--space-lg);
}

.identity-name {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--color-accent);
}

.theme-toggle {
  background: var(--color-hover-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  cursor: pointer;
  font-size: 1.2rem;
  color: var(--color-text);
  padding: 0.25rem 0.5rem;
  transition: all var(--transition);
}

.theme-toggle:hover {
  background: var(--color-bg);
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-muted);
  margin-bottom: 2px;
}

/* Navigation */
.side-nav {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  margin-bottom: var(--space-lg);
}

.nav-btn {
  background: none;
  border: none;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  text-align: left;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-muted);
  padding: var(--space-xs) 0;
  cursor: pointer;
  transition:
    color var(--transition),
    padding-left var(--transition);
}

.nav-btn:hover {
  color: var(--color-text);
  padding-left: var(--space-xs);
}

.nav-btn.active {
  color: var(--color-accent);
  font-weight: 700;
}

/* Footer */
.panel-footer {
  margin-top: auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--color-muted);
}

/* Main Content Area */
.feed-area {
  flex: 1;
  display: flex;
  flex-direction: column;
  max-width: 850px;
  padding: var(--space-xl);
}

.feed {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.search-wrap {
  display: flex;
  align-items: center;
  position: relative;
  margin-bottom: var(--space-lg);
}

.search-input {
  width: 100%;
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-xs) 0;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--color-text);
  transition: border-color var(--transition);
}

.search-input:focus {
  outline: none;
  border-bottom-color: var(--color-accent);
}

.search-icon {
  position: absolute;
  right: 0;
  color: var(--color-muted);
}

.search-results-count {
  position: absolute;
  right: 25px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-muted);
}

/* Landing */
.landing {
  animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero-title {
  font-family: var(--font-heading);
  font-size: 2.8rem;
  font-weight: 700;
  margin-bottom: var(--space-md);
  letter-spacing: -0.02em;
}

.wave {
  display: inline-block;
  animation: wave 2.5s infinite;
  transform-origin: 70% 70%;
}

@keyframes wave {
  0% {
    transform: rotate(0deg);
  }

  10% {
    transform: rotate(14deg);
  }

  20% {
    transform: rotate(-8deg);
  }

  30% {
    transform: rotate(14deg);
  }

  40% {
    transform: rotate(-4deg);
  }

  50% {
    transform: rotate(10deg);
  }

  60% {
    transform: rotate(0deg);
  }

  100% {
    transform: rotate(0deg);
  }
}

.landing-intro,
.landing-nav-hint {
  font-size: 1.1rem;
  color: var(--color-text);
  margin-bottom: var(--space-md);
  max-width: 600px;
  line-height: 1.8;
}

.landing-link {
  background: none;
  border: none;
  color: var(--color-accent);
  font-family: inherit;
  font-size: inherit;
  cursor: pointer;
  padding: 0;
  text-decoration: underline;
  text-decoration-color: transparent;
  transition: text-decoration-color var(--transition);
}

.landing-link:hover {
  text-decoration-color: var(--color-accent);
}

/* Feed Headers */
.feed-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  border-bottom: 1px solid var(--color-border);
  padding-bottom: var(--space-xs);
  margin-bottom: var(--space-sm);
  /* smaller margin because entries have their own top space */
}

.feed-header h1 {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-muted);
}

.feed-count {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-muted);
}

/* Entries */
.entry {
  padding: var(--space-md);
  border-radius: var(--radius);
  background: transparent;
  border: 1px solid transparent;
  transition:
    border-color var(--transition),
    box-shadow var(--transition);
  cursor: pointer;
}

.entry:hover {
  border-color: var(--color-border);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.03);
  background: var(--color-bg);
}

[data-theme="dark"] body .entry:hover {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.entry.pinned {
  border-left: 3px solid var(--color-accent);
}

.entry-header {
  display: flex;
  flex-direction: column;
}

.entry-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--color-muted);
  margin-bottom: var(--space-xs);
  text-transform: uppercase;
}

.entry-title {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: var(--space-xs);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.expand-indicator {
  font-family: var(--font-mono);
  color: var(--color-muted);
  font-size: 0.9rem;
  transition: transform 0.3s ease;
}

.entry.expanded .expand-indicator {
  transform: rotate(180deg);
}

.entry-preview {
  font-size: 0.95rem;
  color: var(--color-muted);
  margin-bottom: var(--space-sm);
}

.entry-tags {
  display: flex;
  gap: var(--space-xs);
  align-items: center;
  flex-wrap: wrap;
}

.reading-time {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-muted);
  margin-right: var(--space-sm);
}

.tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  padding: 2px 6px;
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  color: var(--color-muted);
  text-transform: lowercase;
  transition: all var(--transition);
  cursor: pointer;
}

.tag:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.entry-body-wrap {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s cubic-bezier(0, 1, 0, 1);
}

.entry.expanded .entry-body-wrap {
  max-height: 2000px;
  transition: max-height 0.6s ease-in-out;
}

.entry-body {
  padding-top: var(--space-md);
  margin-top: var(--space-md);
  border-top: 1px solid var(--color-border);
  font-size: 1rem;
}

.entry-body p {
  margin-bottom: var(--space-md);
}

.entry-body code {
  font-family: var(--font-mono);
  background: var(--color-hover-bg);
  padding: 2px 4px;
  border-radius: 4px;
  font-size: 0.85em;
}

.entry-image {
  margin: var(--space-md) 0;
  border-radius: var(--radius);
  filter: grayscale(100%);
  transition: filter var(--transition);
}

.entry-image:hover {
  filter: grayscale(0%);
}

.lab-section {
  margin-bottom: var(--space-md);
}

.lab-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  color: var(--color-accent);
  display: block;
  margin-bottom: var(--space-xs);
  font-weight: 600;
}

.entry-footer {
  margin-top: var(--space-md);
  padding-top: var(--space-md);
  border-top: 1px dashed var(--color-border);
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-muted);
}

.entry-link {
  color: var(--color-muted);
  text-decoration: none;
  transition: color var(--transition);
}

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

/* Utilities */
.empty-state {
  text-align: center;
  padding: var(--space-xl) 0;
  color: var(--color-muted);
}

.empty-state p {
  font-family: var(--font-mono);
  margin-bottom: var(--space-xs);
}

.empty-state span {
  font-size: 0.85rem;
}

.back-to-top {
  position: fixed;
  bottom: var(--space-lg);
  right: var(--space-lg);
  background: var(--color-text);
  color: var(--color-bg);
  border: none;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  transform: translateY(-3px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

/* Animated Grid Background */
body {
  position: relative;
}

body::before {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  width: 200vw;
  height: 200vh;
  background-image:
    linear-gradient(var(--color-border) 1px, transparent 1px),
    linear-gradient(90deg, var(--color-border) 1px, transparent 1px);
  background-size: 40px 40px;
  background-position: center center;
  z-index: -1;
  opacity: 0.3;
  animation: gridMove 20s linear infinite;
  pointer-events: none;
}

[data-theme="dark"] body::before {
  opacity: 0.15;
}

@keyframes gridMove {
  0% {
    transform: translate(0, 0);
  }

  100% {
    transform: translate(-40px, -40px);
  }
}

/* Landing Page New Sections */
.landing-hero {
  margin-bottom: var(--space-xl);
}

.hero-title {
  font-size: 2.5rem;
  margin-bottom: var(--space-sm);
  line-height: 1.2;
}

.hero-subtitle {
  font-size: 1.1rem;
  color: var(--color-muted);
  max-width: 600px;
  margin-bottom: var(--space-md);
  line-height: 1.6;
}

.hero-buttons {
  display: flex;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
}

.hero-btn {
  padding: 0.5rem 1rem;
  border: 1px solid var(--color-border);
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  cursor: pointer;
  border-radius: var(--radius);
  transition: all var(--transition);
  text-decoration: none;
  display: inline-block;
}

.hero-btn:hover {
  background: var(--color-hover-bg);
  border-color: var(--color-accent);
}

.landing-section {
  margin-bottom: var(--space-xl);
}

.landing-section h2 {
  font-size: 1.25rem;
  margin-bottom: var(--space-md);
  font-family: var(--font-mono);
  color: var(--color-accent);
  text-transform: lowercase;
}

.landing-section h2::before {
  content: "./";
  color: var(--color-muted);
}

/* Stats */
.stats-row {
  display: flex;
  gap: var(--space-xl);
  flex-wrap: wrap;
}

.stat-item {
  display: flex;
  flex-direction: column;
}

.stat-number {
  font-size: 2rem;
  font-weight: 700;
  font-family: var(--font-heading);
  color: var(--color-text);
}

.stat-label {
  font-size: 0.8rem;
  font-family: var(--font-mono);
  color: var(--color-muted);
}

/* Skills */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: var(--space-lg);
}

.skill-category h3 {
  font-size: 0.9rem;
  font-family: var(--font-mono);
  color: var(--color-muted);
  margin-bottom: var(--space-sm);
}

.skill-pills {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
}

.skill-pill {
  padding: 0.25rem 0.5rem;
  background: var(--color-hover-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-size: 0.75rem;
  font-family: var(--font-mono);
  color: var(--color-text);
}

/* GitHub Integration */
.github-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-md);
  background: var(--color-hover-bg);
}

.github-stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
  margin-bottom: var(--space-md);
}

.github-stat {
  display: flex;
  flex-direction: column;
}

.github-stat-value {
  font-size: 1.25rem;
  font-weight: 700;
  font-family: var(--font-heading);
}

.github-stat-label {
  font-size: 0.75rem;
  font-family: var(--font-mono);
  color: var(--color-muted);
}

.github-footer {
  font-size: 0.75rem;
  font-family: var(--font-mono);
  color: var(--color-muted);
  border-top: 1px dashed var(--color-border);
  padding-top: var(--space-sm);
  display: flex;
  justify-content: space-between;
}

/* Contact */
.contact-links {
  display: flex;
  gap: var(--space-md);
}

.contact-link {
  color: var(--color-text);
  text-decoration: none;
  font-family: var(--font-mono);
  border-bottom: 1px solid transparent;
  transition: all var(--transition);
}

.contact-link:hover {
  border-bottom-color: var(--color-accent);
  color: var(--color-accent);
}

/* Responsive */
@media (max-width: 768px) {
  .layout {
    flex-direction: column;
  }

  .identity-panel {
    width: 100%;
    height: auto;
    min-height: unset;
    position: sticky;
    top: 0;
    z-index: 50;
    background: var(--color-bg);
    border-right: none;
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-md) var(--space-lg);
  }

  .identity-header {
    margin-bottom: var(--space-sm);
  }

  .side-nav {
    flex-direction: row;
    overflow-x: auto;
    padding-bottom: var(--space-xs);
    gap: var(--space-md);
    margin-bottom: 0;
  }

  .sidebar-tags {
    display: none;
  }

  .panel-footer {
    display: none;
  }



  .feed-area {
    padding: var(--space-md) var(--space-lg);
    max-width: 100%;
  }
}