/* ═══════════════════════════════════════════════════
   normal.hahuy.site — style.css
   ═══════════════════════════════════════════════════ */

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

:root {
  /* Colors */
  --bg:             #ffffff;
  --bg-card:        #f8f9fa;
  --bg-card-hover:  #f2f4f6;
  --bg-sidebar:     #fafafa;
  --border:         #eeeeee;
  --border-strong:  #e0e0e0;

  --text:           #1a1a1a;
  --text-secondary: #4b5563;
  --text-muted:     #9ca3af;
  --text-disabled:  #c0c0c0;

  --accent:         #3b82f6;
  --accent-hover:   #2563eb;
  --accent-light:   #eff6ff;

  /* Tag pill colors */
  --tag-js-bg:      #fef3c7;
  --tag-js-text:    #92400e;
  --tag-py-bg:      #dbeafe;
  --tag-py-text:    #1e40af;
  --tag-cpp-bg:     #fce7f3;
  --tag-cpp-text:   #9d174d;
  --tag-web-bg:     #dcfce7;
  --tag-web-text:   #166534;
  --tag-ai-bg:      #ede9fe;
  --tag-ai-text:    #5b21b6;
  --tag-devops-bg:  #ffedd5;
  --tag-devops-text:#9a3412;
  --tag-default-bg: #f3f4f6;
  --tag-default-text:#374151;

  /* Spacing */
  --sidebar-width: 280px;
  --content-pad:   2rem;

  /* Typography */
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', 'Courier New', monospace;

  /* Transitions */
  --ease: 0.2s ease;
}

html {
  font-size: 15px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  min-height: 100vh;
}

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

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

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

/* ── Layout ─────────────────────────────────────────── */
.layout {
  display: grid;
  grid-template-columns: var(--sidebar-width) 1fr;
  min-height: 100vh;
}

/* ── Sidebar ─────────────────────────────────────────── */
.sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
  overflow-x: hidden;
  background: var(--bg-sidebar);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
  padding: 2.5rem 1.75rem;

  /* Hide scrollbar but keep functionality */
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
}

.sidebar::-webkit-scrollbar {
  width: 4px;
}
.sidebar::-webkit-scrollbar-thumb {
  background: var(--border-strong);
  border-radius: 4px;
}

/* ── Profile ─────────────────────────────────────────── */
.profile {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  object-fit: cover;
  margin-bottom: 0.75rem;
  border: 2px solid var(--border-strong);
  background: var(--bg-card);
}

.name {
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text);
}

.role {
  font-size: 0.82rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.location {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: 0.2rem;
}

.location svg {
  flex-shrink: 0;
  color: var(--text-muted);
}

/* ── Social Links ─────────────────────────────────────── */
.social-links {
  display: flex;
  gap: 0.6rem;
  align-items: center;
}

.social-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 8px;
  color: var(--text-secondary);
  background: var(--bg-card);
  border: 1px solid var(--border);
  transition: color var(--ease), background var(--ease), border-color var(--ease), transform var(--ease);
  position: relative;
}

.social-link:hover {
  color: var(--text);
  background: var(--bg-card-hover);
  border-color: var(--border-strong);
  transform: translateY(-1px);
}

/* Copy email button specifics */
button.social-link {
  padding: 0;
}

.copy-tooltip {
  position: absolute;
  bottom: calc(100% + 6px);
  left: 50%;
  transform: translateX(-50%) translateY(4px);
  background: var(--text);
  color: #fff;
  font-size: 0.7rem;
  font-weight: 500;
  padding: 3px 8px;
  border-radius: 4px;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.15s, transform 0.15s;
}

.copy-tooltip::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  border: 4px solid transparent;
  border-top-color: var(--text);
}

.copy-email.copied .copy-tooltip {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ── Sidebar Labels ─────────────────────────────────── */
.sidebar-label {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: 0.6rem;
}

/* ── Skills Pills (sidebar) ──────────────────────────── */
.skills-section {
  flex: 1;
}

.skills-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.skill-pill {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 500;
  padding: 3px 10px;
  border-radius: 100px;
  border: 1.5px solid transparent;
  cursor: pointer;
  transition: opacity var(--ease), transform var(--ease), box-shadow var(--ease), border-color var(--ease);
  line-height: 1.5;
  user-select: none;
}

.skill-pill:hover {
  transform: translateY(-1px);
  box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}

.skill-pill.active {
  border-color: currentColor;
  box-shadow: 0 0 0 2px rgba(0,0,0,0.06);
  font-weight: 600;
}

/* Tag color classes — pills */
.skill-pill.tag-js       { background: var(--tag-js-bg);      color: var(--tag-js-text); }
.skill-pill.tag-py       { background: var(--tag-py-bg);      color: var(--tag-py-text); }
.skill-pill.tag-cpp      { background: var(--tag-cpp-bg);     color: var(--tag-cpp-text); }
.skill-pill.tag-web      { background: var(--tag-web-bg);     color: var(--tag-web-text); }
.skill-pill.tag-ai       { background: var(--tag-ai-bg);      color: var(--tag-ai-text); }
.skill-pill.tag-devops   { background: var(--tag-devops-bg);  color: var(--tag-devops-text); }
.skill-pill.tag-default  { background: var(--tag-default-bg); color: var(--tag-default-text); }

/* Dimmed state when another is active */
.skill-pill.dimmed {
  opacity: 0.35;
}

/* ── Sidebar Footer ─────────────────────────────────── */
.sidebar-footer {
  margin-top: auto;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
}

.terminal-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.75rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
  transition: color var(--ease);
}

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

/* ── Main Content ─────────────────────────────────────── */
.content {
  padding: var(--content-pad);
  min-height: 100vh;
}

.content-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border);
}

.content-title {
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text);
}

/* ── Reset Button ─────────────────────────────────────── */
.reset-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 4px 10px;
  border-radius: 6px;
  border: 1px solid var(--border-strong);
  background: var(--bg-card);
  transition: all var(--ease);
}

.reset-btn:hover {
  color: var(--text);
  border-color: var(--text-muted);
  background: var(--bg-card-hover);
}

/* ── Projects Grid ─────────────────────────────────────── */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.25rem;
  align-items: start;
}

/* ── Project Card ─────────────────────────────────────── */
.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  transition: transform var(--ease), box-shadow var(--ease), border-color var(--ease);
  display: flex;
  flex-direction: column;
}

.project-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 28px rgba(0, 0, 0, 0.07);
  border-color: var(--border-strong);
}

/* Card fade-in animation */
.fade-card {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.45s ease, transform 0.45s ease;
}

.fade-card.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Filtered out */
.project-card.hidden {
  display: none;
}

/* ── Card Image ─────────────────────────────────────────── */
.card-image {
  width: 100%;
  height: 180px;
  overflow: hidden;
  position: relative;
  background: var(--bg-card);
}

.card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.project-card:hover .card-image img {
  transform: scale(1.03);
}

.card-image-link {
  display: block;
}

/* Placeholder gradients */
.card-image--placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
}

.card-image--grad1 {
  background: linear-gradient(135deg, #dbeafe 0%, #ede9fe 100%);
}

.card-image--grad2 {
  background: linear-gradient(135deg, #dcfce7 0%, #dbeafe 100%);
}

.placeholder-label {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-muted);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

/* ── CLI Preview (Card 1) ─────────────────────────────── */
.card-image--cli {
  background: #1a1a2e;
  padding: 0;
}

.cli-preview {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  font-family: var(--font-mono);
}

.cli-bar {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 8px 12px;
  background: #16213e;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  flex-shrink: 0;
}

.cli-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}
.cli-dot--red    { background: #ff5f57; }
.cli-dot--yellow { background: #febc2e; }
.cli-dot--green  { background: #28c840; }

.cli-bar-title {
  font-size: 0.65rem;
  color: rgba(255,255,255,0.35);
  margin-left: auto;
  margin-right: auto;
}

.cli-body {
  padding: 10px 14px;
  flex: 1;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.cli-body p {
  font-size: 0.72rem;
  line-height: 1.5;
  white-space: nowrap;
}

.cli-prompt {
  color: #4ade80;
  margin-right: 2px;
}

.cli-cmd {
  color: #e2e8f0;
}

.cli-out {
  color: #94a3b8;
  padding-left: 0;
}

.cli-cursor {
  color: #4ade80;
  animation: blink 1s step-end infinite;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0; }
}

/* ── Card Body ─────────────────────────────────────────── */
.card-body {
  padding: 1rem 1.1rem 1.1rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  flex: 1;
}

.card-title {
  font-size: 0.92rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--text);
  line-height: 1.3;
}

.card-title a {
  color: inherit;
  transition: color var(--ease);
}

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

.card-title--muted {
  color: var(--text-secondary);
}

/* ── Card Tags ─────────────────────────────────────────── */
.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem;
}

.tag {
  display: inline-block;
  font-size: 0.68rem;
  font-weight: 500;
  padding: 2px 8px;
  border-radius: 100px;
  line-height: 1.5;
  white-space: nowrap;
}

.tag-js       { background: var(--tag-js-bg);      color: var(--tag-js-text); }
.tag-py       { background: var(--tag-py-bg);      color: var(--tag-py-text); }
.tag-cpp      { background: var(--tag-cpp-bg);     color: var(--tag-cpp-text); }
.tag-web      { background: var(--tag-web-bg);     color: var(--tag-web-text); }
.tag-ai       { background: var(--tag-ai-bg);      color: var(--tag-ai-text); }
.tag-devops   { background: var(--tag-devops-bg);  color: var(--tag-devops-text); }
.tag-default  { background: var(--tag-default-bg); color: var(--tag-default-text); }

/* ── Card Description ─────────────────────────────────── */
.card-desc {
  font-size: 0.8rem;
  color: var(--text-secondary);
  line-height: 1.65;
  flex: 1;
}

.card-desc--muted {
  color: var(--text-muted);
}

/* ── Card Links ─────────────────────────────────────────── */
.card-links {
  display: flex;
  gap: 0.75rem;
  align-items: center;
  margin-top: 0.25rem;
}

.card-link {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  font-size: 0.77rem;
  font-weight: 500;
  color: var(--accent);
  transition: color var(--ease), gap var(--ease);
}

.card-link:hover {
  color: var(--accent-hover);
  gap: 0.4rem;
}

.card-link--primary {
  font-weight: 600;
}

.card-link--disabled {
  color: var(--text-disabled);
  cursor: default;
  font-size: 0.77rem;
  font-weight: 500;
  font-style: italic;
}

/* ── No Results ─────────────────────────────────────────── */
.no-results {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  padding: 3rem 1rem;
  color: var(--text-muted);
  font-size: 0.85rem;
  text-align: center;
}

.no-results strong {
  color: var(--text-secondary);
}

/* ═══════════════════════════════════════════════════
   RESPONSIVE — Mobile first
   ═══════════════════════════════════════════════════ */

@media (max-width: 900px) {
  :root {
    --sidebar-width: 240px;
  }

  .content {
    padding: 1.5rem;
  }
}

@media (max-width: 720px) {
  .layout {
    grid-template-columns: 1fr;
    grid-template-rows: auto 1fr;
  }

  .sidebar {
    position: static;
    height: auto;
    overflow: visible;
    border-right: none;
    border-bottom: 1px solid var(--border);
    padding: 1.5rem;
    gap: 1.25rem;
  }

  .sidebar-footer {
    display: none;
  }

  .skills-section {
    flex: none;
  }

  .content {
    padding: 1.25rem;
  }

  .projects-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .content {
    padding: 1rem;
  }

  .sidebar {
    padding: 1.25rem 1rem;
  }

  .projects-grid {
    gap: 0.9rem;
  }
}