/* ==========================================================================
   Design Tokens & Variables (Section 2)
   ========================================================================== */
:root {
  --bg-page: #08080c;
  --bg-shell: #0d1117;
  --bg-sidebar: #101014;
  --bg-card: #161b22;
  --bg-card-hover: #1c2230;
  --border-color: #21262d;
  --border-violet: rgba(163, 113, 247, 0.28);

  --text-primary: #e6edf3;
  --text-secondary: #c9d1d9;
  --text-muted: #8b949e;

  --accent-violet: #a371f7;
  --deep-violet: #7c3aed;
  --soft-violet: #c4a5ff;

  --stat-repos: #a371f7;
  --stat-stars: #ec4899;
  --stat-followers: #22d3ee;
  --stat-following: #2dd4a7;

  --heatmap-0: #161b22;
  --heatmap-1: #3a2a5e;
  --heatmap-2: #5b3fa0;
  --heatmap-3: #8b5cf6;
  --heatmap-4: #c4a5ff;

  --radius-cards: 14px;
  --radius-chips: 8px;
  --radius-buttons: 10px;

  --card-padding: 20px;
  --section-gap: 24px;
  --nav-height: 62px;

  --font-stack: -apple-system, "Segoe UI", Inter, Roboto, "Helvetica Neue", Arial, sans-serif;
}

/* Dark mode only by design: prefers-color-scheme is a no-op */
@media (prefers-color-scheme: light) {
  :root {
    color-scheme: dark;
  }
}

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

html {
  font-family: var(--font-stack);
  font-size: 15px;
  line-height: 1.5;
  background-color: var(--bg-page);
  color: var(--text-primary);
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  min-height: 100vh;
  background-color: var(--bg-page);
  color: var(--text-primary);
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  width: 100%;
}

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

button {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
  background: none;
  border: none;
  cursor: pointer;
}

input {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
}

img, svg {
  display: block;
}

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

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}

/* ==========================================================================
   Header & Navigation (Section 4A)
   ========================================================================== */
.top-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--bg-shell);
  border-bottom: 1px solid var(--border-color);
  height: var(--nav-height);
  width: 100%;
}

.top-nav {
  max-width: 1440px;
  height: 100%;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  position: relative;
  width: 100%;
}

.nav-left {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.nav-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-height: 40px;
  color: var(--text-primary);
  transition: opacity 0.2s ease;
}

.nav-brand:hover {
  opacity: 0.85;
}

.octicon-logo {
  fill: var(--text-primary);
}

.brand-text {
  font-weight: 700;
  font-size: 16px;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

.nav-center {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 0 14px;
  color: var(--text-secondary);
  font-weight: 600;
  font-size: 14px;
  border-radius: var(--radius-buttons);
  transition: color 0.15s ease, background-color 0.15s ease;
  position: relative;
}

.nav-link:hover {
  color: var(--text-primary);
  background-color: rgba(255, 255, 255, 0.04);
}

.nav-link.active {
  color: var(--accent-violet);
  background-color: rgba(163, 113, 247, 0.08);
}

.nav-link.active::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 14px;
  right: 14px;
  height: 2px;
  background-color: var(--accent-violet);
  border-radius: 2px 2px 0 0;
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.search-box {
  position: relative;
  display: flex;
  align-items: center;
}

.search-icon {
  position: absolute;
  left: 12px;
  fill: var(--text-muted);
  pointer-events: none;
}

.search-input {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-buttons);
  color: var(--text-primary);
  padding: 8px 12px 8px 36px;
  font-size: 13px;
  width: 200px;
  height: 40px;
  transition: border-color 0.15s ease, width 0.2s ease, background-color 0.15s ease;
}

.search-input:focus {
  outline: none;
  border-color: var(--accent-violet);
  background-color: var(--bg-shell);
  width: 230px;
}

.search-input::placeholder {
  color: var(--text-muted);
}

.nav-avatar-chip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--border-violet);
  overflow: hidden;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
  flex-shrink: 0;
}

.nav-avatar-chip:hover {
  transform: scale(1.05);
  box-shadow: 0 0 10px rgba(163, 113, 247, 0.35);
}

.avatar-chip-img {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  object-fit: cover;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-buttons);
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  cursor: pointer;
  flex-shrink: 0;
}

.hamburger-line {
  display: block;
  width: 18px;
  height: 2px;
  background-color: var(--text-primary);
  border-radius: 1px;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

/* ==========================================================================
   Layout: Two-Column Body (Section 4B)
   ========================================================================== */
.site-container {
  max-width: 1440px;
  width: 100%;
  margin: 0 auto;
  padding: 24px 24px 48px;
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: var(--section-gap);
  flex: 1;
  min-width: 0;
}

/* ==========================================================================
   Left Sidebar Card (Section 4C)
   ========================================================================== */
.sidebar-card {
  background-color: var(--bg-sidebar);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-cards);
  padding: var(--card-padding);
  display: flex;
  flex-direction: column;
  gap: 18px;
  position: sticky;
  top: calc(var(--nav-height) + 24px);
  height: fit-content;
  min-width: 0;
  width: 100%;
}

.avatar-container {
  display: flex;
  justify-content: center;
  align-items: center;
  margin-top: 4px;
}

.sidebar-avatar {
  width: 180px;
  height: 180px;
  border-radius: 50%;
  border: 1px solid var(--accent-violet);
  box-shadow: 0 0 24px rgba(163, 113, 247, 0.22);
  object-fit: cover;
}

.profile-names {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.profile-fullname {
  font-size: 22px;
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

.profile-handle {
  font-size: 15px;
  color: var(--text-muted);
  font-weight: 500;
  transition: color 0.15s ease;
  width: fit-content;
  min-height: 24px;
  display: inline-flex;
  align-items: center;
}

.profile-handle:hover {
  color: var(--accent-violet);
}

.profile-bio {
  color: var(--text-secondary);
  font-size: 14.5px;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.social-links-row {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 4px 0;
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.social-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-height: 40px;
  color: var(--text-secondary);
  font-size: 14px;
  border-radius: var(--radius-buttons);
  padding: 0 8px;
  transition: color 0.15s ease, background-color 0.15s ease;
}

.social-link svg {
  fill: var(--text-muted);
  flex-shrink: 0;
  transition: fill 0.15s ease;
}

.social-link:hover {
  color: var(--text-primary);
  background-color: var(--bg-card);
}

.social-link:hover svg {
  fill: var(--accent-violet);
}

.sidebar-buttons {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 14px;
  min-height: 40px;
  padding: 0 16px;
  border-radius: var(--radius-buttons);
  transition: opacity 0.15s ease, transform 0.15s ease, background-color 0.15s ease;
  text-align: center;
  user-select: none;
}

.btn-follow {
  background: linear-gradient(135deg, var(--deep-violet) 0%, var(--accent-violet) 100%);
  color: #ffffff;
  font-weight: 700;
  box-shadow: 0 2px 10px rgba(124, 58, 237, 0.3);
}

.btn-follow:hover {
  opacity: 0.92;
  transform: translateY(-1px);
}

.btn-secondary, .btn-copy-email {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  font-weight: 600;
}

.btn-secondary:hover, .btn-copy-email:hover {
  background-color: var(--bg-card-hover);
  border-color: var(--border-violet);
}

.btn-copy-email.copied {
  background-color: rgba(45, 212, 167, 0.15);
  border-color: var(--stat-following);
  color: var(--stat-following);
}

.sidebar-skills-block {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.sidebar-section-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.skills-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.skill-chip {
  display: inline-flex;
  align-items: center;
  padding: 5px 11px;
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-chips);
  font-size: 12.5px;
  color: var(--text-secondary);
  font-weight: 500;
  flex-shrink: 0;
  white-space: nowrap;
  transition: border-color 0.15s ease, color 0.15s ease;
}

.skill-chip:hover {
  border-color: var(--border-violet);
  color: var(--text-primary);
}

.sidebar-footer {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding-top: 12px;
  border-top: 1px solid var(--border-color);
  font-size: 13px;
  color: var(--text-muted);
}

.sidebar-meta-item {
  display: flex;
  align-items: center;
}

.sidebar-source-row {
  justify-content: space-between;
}

.btn-refresh {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 8px;
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  transition: color 0.15s ease, border-color 0.15s ease, transform 0.3s ease;
}

.btn-refresh svg {
  fill: currentColor;
}

.btn-refresh:hover {
  color: var(--accent-violet);
  border-color: var(--border-violet);
}

.btn-refresh.spinning svg {
  animation: spin 0.7s linear infinite;
}

@keyframes spin {
  100% {
    transform: rotate(360deg);
  }
}

.offline-note {
  font-size: 12px;
  color: var(--text-muted);
  font-style: italic;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.offline-note::before {
  content: "•";
  color: #ec4899;
}

.hidden {
  display: none !important;
}

/* ==========================================================================
   Main Column & Tab Strip (Section 4D)
   ========================================================================== */
.main-column {
  display: flex;
  flex-direction: column;
  gap: var(--section-gap);
  min-width: 0;
  width: 100%;
}

.tab-strip {
  display: flex;
  align-items: center;
  gap: 8px;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 0;
  overflow-x: auto;
  scrollbar-width: none;
}

.tab-strip::-webkit-scrollbar {
  display: none;
}

.tab-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  padding: 0 16px;
  color: var(--text-secondary);
  font-size: 14.5px;
  font-weight: 600;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  transition: color 0.15s ease, border-color 0.15s ease;
  white-space: nowrap;
}

.tab-item:hover {
  color: var(--text-primary);
}

.tab-item.active {
  color: var(--text-primary);
  border-bottom-color: var(--accent-violet);
}

.tab-octicon {
  fill: currentColor;
  opacity: 0.8;
}

.tab-count-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 2px 7px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 500;
  background-color: rgba(255, 255, 255, 0.08);
  color: var(--text-secondary);
}

.tab-panel {
  display: none;
  flex-direction: column;
  gap: var(--section-gap);
  min-width: 0;
  width: 100%;
}

.tab-panel.active {
  display: flex;
}

/* ==========================================================================
   Stat Card Row (Section 4E)
   ========================================================================== */
.stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  width: 100%;
}

.stat-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-cards);
  padding: var(--card-padding);
  display: flex;
  align-items: center;
  gap: 16px;
  transition: transform 0.15s ease, border-color 0.15s ease, background-color 0.15s ease;
  min-width: 0;
}

.stat-card:hover {
  background-color: var(--bg-card-hover);
  border-color: var(--border-violet);
  transform: translateY(-2px);
}

.stat-icon-tile {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.stat-tile-repos {
  background-color: rgba(163, 113, 247, 0.15);
  color: var(--stat-repos);
}
.stat-tile-repos svg { fill: var(--stat-repos); }

.stat-tile-stars {
  background-color: rgba(236, 72, 153, 0.15);
  color: var(--stat-stars);
}
.stat-tile-stars svg { fill: var(--stat-stars); }

.stat-tile-followers {
  background-color: rgba(34, 211, 238, 0.15);
  color: var(--stat-followers);
}
.stat-tile-followers svg { fill: var(--stat-followers); }

.stat-tile-following {
  background-color: rgba(45, 212, 167, 0.15);
  color: var(--stat-following);
}
.stat-tile-following svg { fill: var(--stat-following); }

.stat-info {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.stat-label {
  font-size: 13px;
  color: var(--text-muted);
  font-weight: 500;
}

.stat-value {
  font-size: 26px;
  font-weight: 700;
  line-height: 1.15;
  color: var(--text-primary);
  min-height: 30px;
}

.skeleton {
  display: inline-block;
  background: linear-gradient(90deg, #1c2230 25%, #2a3449 50%, #1c2230 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: 4px;
  min-width: 38px;
}

@keyframes shimmer {
  0% {
    background-position: 200% 0;
  }
  100% {
    background-position: -200% 0;
  }
}

/* ==========================================================================
   Section Blocks Common
   ========================================================================== */
.section-block {
  display: flex;
  flex-direction: column;
  gap: 16px;
  min-width: 0;
  width: 100%;
}

.section-title-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.section-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

/* ==========================================================================
   Pinned Repositories (Section 4F)
   ========================================================================== */
.pinned-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  width: 100%;
}

.repo-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-cards);
  padding: var(--card-padding);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 14px;
  transition: background-color 0.15s ease, border-color 0.15s ease, transform 0.15s ease;
  min-height: 150px;
  min-width: 0;
}

.repo-card:hover {
  background-color: var(--bg-card-hover);
  border-color: var(--border-violet);
  transform: translateY(-2px);
}

.repo-card-top {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.repo-card-header {
  display: flex;
  align-items: center;
  gap: 8px;
}

.repo-octicon {
  fill: var(--accent-violet);
  flex-shrink: 0;
}

.repo-name-link {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  word-break: break-word;
  transition: color 0.15s ease;
}

.repo-name-link:hover {
  color: var(--accent-violet);
  text-decoration: underline;
}

.repo-description {
  font-size: 13.5px;
  color: var(--text-muted);
  line-height: 1.45;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.repo-card-footer {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 13px;
  color: var(--text-muted);
  margin-top: auto;
}

.repo-lang {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.lang-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}

.repo-stat-item {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.repo-stat-item svg {
  fill: var(--text-muted);
}

/* ==========================================================================
   Contribution Activity (Section 4G)
   ========================================================================== */
.heatmap-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-cards);
  padding: var(--card-padding);
  display: flex;
  flex-direction: column;
  gap: 16px;
  min-width: 0;
  width: 100%;
}

.heatmap-scroll-area {
  overflow-x: auto;
  padding-bottom: 8px;
  scrollbar-width: thin;
  scrollbar-color: var(--border-color) transparent;
  -webkit-overflow-scrolling: touch;
  max-width: 100%;
}

.heatmap-scroll-area::-webkit-scrollbar {
  height: 6px;
}
.heatmap-scroll-area::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 3px;
}

.heatmap-container {
  display: inline-block;
  min-width: fit-content;
}

.heatmap-grid-inner {
  display: flex;
  gap: 8px;
}

.heatmap-day-labels {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding-top: 24px;
  height: 95px;
  font-size: 10px;
  color: var(--text-muted);
  user-select: none;
  width: 26px;
  flex-shrink: 0;
}

.heatmap-day-label {
  line-height: 11px;
}

.heatmap-main {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.heatmap-months-row {
  display: grid;
  grid-template-columns: repeat(53, 14px);
  height: 16px;
  font-size: 11px;
  color: var(--text-muted);
  position: relative;
  user-select: none;
}

.heatmap-month-col {
  position: absolute;
  white-space: nowrap;
}

.heatmap-weeks-row {
  display: flex;
  gap: 3px;
}

.heatmap-week-col {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.heatmap-cell {
  width: 11px;
  height: 11px;
  border-radius: 2px;
  cursor: pointer;
  background-color: var(--heatmap-0);
  transition: transform 0.1s ease, outline 0.1s ease;
  position: relative;
}

.heatmap-cell:hover, .heatmap-cell:focus {
  outline: 1px solid var(--accent-violet);
  outline-offset: 1px;
  transform: scale(1.2);
  z-index: 5;
}

.heatmap-cell.level-0 { background-color: var(--heatmap-0); }
.heatmap-cell.level-1 { background-color: var(--heatmap-1); }
.heatmap-cell.level-2 { background-color: var(--heatmap-2); }
.heatmap-cell.level-3 { background-color: var(--heatmap-3); }
.heatmap-cell.level-4 { background-color: var(--heatmap-4); }

.contributions-fallback-img {
  width: 100%;
  height: auto;
  border-radius: 8px;
}

.heatmap-footer-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  color: var(--text-muted);
  padding-top: 4px;
  flex-wrap: wrap;
  gap: 12px;
}

.activity-link {
  color: var(--accent-violet);
  font-weight: 600;
  min-height: 40px;
  display: inline-flex;
  align-items: center;
  transition: color 0.15s ease;
}

.activity-link:hover {
  color: var(--soft-violet);
  text-decoration: underline;
}

.heatmap-legend {
  display: flex;
  align-items: center;
  gap: 4px;
}

.legend-label {
  font-size: 12px;
  color: var(--text-muted);
  margin: 0 4px;
}

.legend-square {
  width: 11px;
  height: 11px;
  border-radius: 2px;
}

.legend-square.level-0 { background-color: var(--heatmap-0); }
.legend-square.level-1 { background-color: var(--heatmap-1); }
.legend-square.level-2 { background-color: var(--heatmap-2); }
.legend-square.level-3 { background-color: var(--heatmap-3); }
.legend-square.level-4 { background-color: var(--heatmap-4); }

/* Floating Tooltip */
.floating-tooltip {
  position: fixed;
  z-index: 1000;
  background-color: var(--bg-card-hover);
  color: var(--text-primary);
  border: 1px solid var(--border-violet);
  padding: 6px 12px;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 500;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.4);
  pointer-events: none;
  opacity: 0;
  transform: translate(-50%, -100%) translateY(-8px);
  transition: opacity 0.15s ease, transform 0.15s ease;
  white-space: nowrap;
}

.floating-tooltip.visible {
  opacity: 1;
}

/* ==========================================================================
   Repositories Tab (Full Grid & Search)
   ========================================================================== */
.repos-filter-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13.5px;
  color: var(--text-muted);
}

.repos-full-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  width: 100%;
}

/* ==========================================================================
   Projects Tab (Section 6B Curated Projects)
   ========================================================================== */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  width: 100%;
}

.project-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-cards);
  padding: var(--card-padding);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 16px;
  transition: background-color 0.15s ease, border-color 0.15s ease, transform 0.15s ease;
  min-width: 0;
}

.project-card:hover {
  background-color: var(--bg-card-hover);
  border-color: var(--border-violet);
  transform: translateY(-2px);
}

.project-card-body {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.project-title-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.project-title {
  font-size: 17px;
  font-weight: 700;
  color: var(--text-primary);
}

.project-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.5;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.project-tag {
  display: inline-flex;
  align-items: center;
  padding: 3px 9px;
  background-color: rgba(163, 113, 247, 0.08);
  border: 1px solid var(--border-violet);
  border-radius: var(--radius-chips);
  font-size: 12px;
  color: var(--soft-violet);
  font-weight: 500;
}

.project-card-footer {
  display: flex;
  align-items: center;
  justify-content: flex-start;
}

.btn-project {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 40px;
  padding: 0 16px;
  background-color: rgba(163, 113, 247, 0.12);
  border: 1px solid var(--border-violet);
  color: var(--text-primary);
  border-radius: var(--radius-buttons);
  font-weight: 600;
  font-size: 13.5px;
  transition: background-color 0.15s ease, color 0.15s ease;
}

.btn-project:hover {
  background-color: var(--accent-violet);
  color: #ffffff;
}

.btn-project svg {
  fill: currentColor;
}

/* ==========================================================================
   Contact Section (Section 4H)
   ========================================================================== */
.contact-section {
  margin-top: 12px;
  padding-top: 24px;
  border-top: 1px solid var(--border-color);
  width: 100%;
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  width: 100%;
}

.contact-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-cards);
  padding: var(--card-padding);
  display: flex;
  align-items: center;
  gap: 16px;
  min-height: 80px;
  transition: background-color 0.15s ease, border-color 0.15s ease, transform 0.15s ease;
  min-width: 0;
}

.contact-card:hover {
  background-color: var(--bg-card-hover);
  border-color: var(--border-violet);
  transform: translateY(-2px);
}

.contact-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background-color: rgba(163, 113, 247, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-icon svg {
  fill: var(--accent-violet);
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.contact-type {
  font-size: 12px;
  color: var(--text-muted);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.contact-value {
  font-size: 14.5px;
  color: var(--text-primary);
  font-weight: 600;
  word-break: break-word;
}

.contact-card-button {
  cursor: default;
}

.contact-card-button:hover {
  transform: none;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  margin-top: auto;
  background-color: var(--bg-shell);
  border-top: 1px solid var(--border-color);
  padding: 24px;
  text-align: center;
  font-size: 13.5px;
  color: var(--text-muted);
  width: 100%;
}

.footer-inner {
  max-width: 1440px;
  margin: 0 auto;
}

/* ==========================================================================
   Responsive Breakpoints (Section 7)
   - 1440px, 1024px, 768px, 360px
   ========================================================================== */
@media (max-width: 1180px) {
  .pinned-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 1024px) {
  .site-container {
    grid-template-columns: 280px 1fr;
    gap: 20px;
    padding: 20px 20px 40px;
  }
  .stats-row {
    grid-template-columns: repeat(2, 1fr);
  }
  .contact-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 860px) {
  .site-container {
    grid-template-columns: 1fr;
  }
  .sidebar-card {
    position: static;
  }
}

@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }
  .nav-center {
    display: none;
    position: absolute;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background-color: var(--bg-shell);
    border-bottom: 1px solid var(--border-color);
    flex-direction: column;
    padding: 16px 24px;
    gap: 8px;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.4);
    z-index: 101;
  }
  .nav-center.open {
    display: flex;
  }
  .nav-center .nav-link {
    width: 100%;
    justify-content: flex-start;
  }
  .search-input {
    width: 130px;
  }
  .search-input:focus {
    width: 150px;
  }
  .repos-full-grid, .projects-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 760px) {
  .pinned-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 580px) {
  .stats-row {
    grid-template-columns: 1fr;
  }
  .contact-grid {
    grid-template-columns: 1fr;
  }
  .top-nav {
    padding: 0 12px;
    gap: 8px;
  }
  .brand-text {
    font-size: 14px;
  }
  .site-container {
    padding: 16px 12px 36px;
  }
  .sidebar-card {
    padding: 16px;
  }
  .nav-right {
    gap: 6px;
  }
  .search-input {
    width: 90px;
    padding: 6px 8px 6px 28px;
    font-size: 11px;
    height: 36px;
  }
  .search-input:focus {
    width: 110px;
  }
  .search-icon {
    left: 8px;
    width: 14px;
    height: 14px;
  }
  .nav-avatar-chip {
    width: 36px;
    height: 36px;
  }
  .avatar-chip-img {
    width: 28px;
    height: 28px;
  }
  .nav-toggle {
    width: 36px;
    height: 36px;
  }
}

@media (max-width: 375px) {
  .top-nav {
    padding: 0 8px;
  }
  .brand-text {
    font-size: 13px;
  }
  .search-input {
    width: 75px;
    font-size: 11px;
  }
  .search-input:focus {
    width: 90px;
  }
}