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

/* Light theme (default) */
:root,
[data-theme="light"] {
  --bg: #f0f0ee;
  --card-bg: #ffffff;
  --card-bg-soft: #fafaf9;
  --card-bg-hover: #f9f9f8;
  --text-primary: #1c1c1a;
  --text-secondary: #6b6a65;
  --text-tertiary: #9a9893;
  --border: rgba(0, 0, 0, 0.07);
  --border-hover: rgba(0, 0, 0, 0.14);
  --accent: #4f46e5;
  --accent-light: #eef2ff;
  --success: #10b981;
  --avatar-ring: #ffffff;
  --shadow-1: 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-2: 0 4px 16px rgba(0, 0, 0, 0.06);
  --shadow-3: 0 12px 40px rgba(0, 0, 0, 0.05);

  --badge-blue-bg: #e6f1fb;   --badge-blue-fg: #0c447c;
  --badge-green-bg: #eaf3de;  --badge-green-fg: #27500a;
  --badge-amber-bg: #faeeda;  --badge-amber-fg: #633806;
  --badge-purple-bg: #eeedfe; --badge-purple-fg: #3c3489;
  --badge-gray-bg: #f1efe8;   --badge-gray-fg: #444441;
}

/* Dark theme */
[data-theme="dark"] {
  --bg: #0e0e10;
  --card-bg: #18181b;
  --card-bg-soft: #1f1f23;
  --card-bg-hover: #232328;
  --text-primary: #f4f4f5;
  --text-secondary: #a1a1aa;
  --text-tertiary: #71717a;
  --border: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(255, 255, 255, 0.18);
  --accent: #818cf8;
  --accent-light: rgba(129, 140, 248, 0.12);
  --success: #34d399;
  --avatar-ring: #18181b;
  --shadow-1: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-2: 0 4px 16px rgba(0, 0, 0, 0.4);
  --shadow-3: 0 12px 40px rgba(0, 0, 0, 0.5);

  --badge-blue-bg: rgba(56, 138, 221, 0.15);   --badge-blue-fg: #85b7eb;
  --badge-green-bg: rgba(99, 153, 34, 0.15);   --badge-green-fg: #97c459;
  --badge-amber-bg: rgba(186, 117, 23, 0.15);  --badge-amber-fg: #ef9f27;
  --badge-purple-bg: rgba(127, 119, 221, 0.15);--badge-purple-fg: #afa9ec;
  --badge-gray-bg: rgba(255, 255, 255, 0.06);  --badge-gray-fg: #b4b2a9;
}

html, body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, sans-serif;
  background: var(--bg);
  color: var(--text-primary);
  -webkit-font-smoothing: antialiased;
  line-height: 1.6;
  transition: background 0.25s ease;
}

body {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px 16px;
}

/* Theme toggle button */
.theme-toggle {
  position: absolute;
  top: 14px;
  right: 14px;
  width: 32px;
  height: 32px;
  border-radius: 8px;
  border: 0.5px solid var(--border);
  background: var(--card-bg-soft);
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease, transform 0.15s ease;
  z-index: 10;
}

.theme-toggle:hover {
  color: var(--text-primary);
  border-color: var(--border-hover);
  transform: translateY(-1px);
}

.theme-toggle:active {
  transform: translateY(0);
}

.theme-toggle .sun-icon,
.theme-toggle .moon-icon {
  position: absolute;
  transition: opacity 0.2s ease, transform 0.3s ease;
}

[data-theme="light"] .sun-icon { opacity: 1; transform: rotate(0); }
[data-theme="light"] .moon-icon { opacity: 0; transform: rotate(-90deg); }
[data-theme="dark"] .sun-icon { opacity: 0; transform: rotate(90deg); }
[data-theme="dark"] .moon-icon { opacity: 1; transform: rotate(0); }

/* Animations */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.5); }
  50%      { box-shadow: 0 0 0 6px rgba(16, 185, 129, 0); }
}

/* Card */
.card {
  background: var(--card-bg);
  border-radius: 20px;
  border: 0.5px solid var(--border);
  box-shadow: var(--shadow-1), var(--shadow-2), var(--shadow-3);
  padding: 0;
  max-width: 420px;
  width: 100%;
  overflow: hidden;
  position: relative;
  animation: fadeUp 0.6s cubic-bezier(0.16, 1, 0.3, 1);
  transition: background 0.25s ease, border-color 0.25s ease;
}

/* Accent strip */
.accent-bar {
  height: 3px;
  background: linear-gradient(90deg, #4f46e5, #818cf8, #a78bfa);
  width: 100%;
}

/* Inner padding */
.card > *:not(.accent-bar):not(.divider):not(.email-row):not(.socials) {
  padding-left: 2rem;
  padding-right: 2rem;
}

/* Header */
.header {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding-top: 2rem;
  padding-bottom: 1.5rem;
}

.avatar-wrap {
  position: relative;
  margin-bottom: 1rem;
}

.avatar {
  width: 88px;
  height: 88px;
  border-radius: 50%;
  padding: 3px;
  background: linear-gradient(135deg, #4f46e5, #a78bfa);
}

.avatar img {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  object-fit: cover;
  display: block;
  border: 2.5px solid var(--avatar-ring);
  transition: border-color 0.25s ease;
}

.status-dot {
  position: absolute;
  bottom: 4px;
  right: 4px;
  width: 14px;
  height: 14px;
  background: var(--success);
  border: 2.5px solid var(--avatar-ring);
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
  transition: border-color 0.25s ease;
}

.name {
  font-size: 21px;
  font-weight: 600;
  letter-spacing: -0.3px;
  margin-bottom: 2px;
}

.tagline {
  font-size: 13.5px;
  color: var(--accent);
  font-weight: 500;
  margin-bottom: 6px;
}

.bio {
  font-size: 13px;
  color: var(--text-tertiary);
  max-width: 300px;
}

/* Stack badges */
.stack {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  justify-content: center;
  padding-bottom: 1.5rem;
}

.badge {
  font-size: 11.5px;
  font-weight: 500;
  padding: 4px 11px;
  border-radius: 99px;
  letter-spacing: 0.1px;
  transition: background 0.25s ease, color 0.25s ease;
}

.badge-blue   { background: var(--badge-blue-bg);   color: var(--badge-blue-fg); }
.badge-green  { background: var(--badge-green-bg);  color: var(--badge-green-fg); }
.badge-amber  { background: var(--badge-amber-bg);  color: var(--badge-amber-fg); }
.badge-purple { background: var(--badge-purple-bg); color: var(--badge-purple-fg); }
.badge-gray   { background: var(--badge-gray-bg);   color: var(--badge-gray-fg); }

/* Projects */
.section-label {
  font-size: 10.5px;
  color: var(--text-tertiary);
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  font-weight: 600;
}

.projects {
  padding-bottom: 1.5rem;
}

.project {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 11px 14px;
  border: 0.5px solid var(--border);
  border-radius: 12px;
  margin-bottom: 8px;
  text-decoration: none;
  color: inherit;
  transition: all 0.2s ease;
  background: var(--card-bg-soft);
}

.project-info {
  flex: 1;
  min-width: 0;
}

.project:hover {
  border-color: var(--border-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-2);
  background: var(--card-bg-hover);
}

.project:last-child { margin-bottom: 0; }

.project-title {
  font-size: 13.5px;
  font-weight: 500;
  margin-bottom: 1px;
}

.project-desc {
  font-size: 12px;
  color: var(--text-secondary);
}

.project-hint {
  font-size: 11.5px;
  color: var(--accent);
  font-weight: 500;
  opacity: 0;
  transform: translateX(-4px);
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.project:hover .project-hint {
  opacity: 1;
  transform: translateX(0);
}

.project-arrow {
  font-size: 13px;
  color: var(--text-tertiary);
  flex-shrink: 0;
  transition: color 0.2s ease;
}

.project:hover .project-arrow {
  color: var(--accent);
}

/* Divider */
.divider {
  height: 0.5px;
  background: var(--border);
  margin: 0 2rem;
}

/* Email row */
.email-row {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text-primary);
  padding: 1rem 2rem;
  transition: background 0.15s ease;
}

.email-row:hover {
  background: var(--card-bg-hover);
}

.email-icon {
  width: 32px;
  height: 32px;
  background: var(--accent-light);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  font-size: 14px;
  flex-shrink: 0;
  transition: background 0.25s ease, color 0.25s ease;
}

.email-text {
  font-size: 13.5px;
  font-weight: 500;
  flex: 1;
  color: var(--text-primary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.email-hint {
  font-size: 12px;
  color: var(--accent);
  font-weight: 500;
  opacity: 0;
  transform: translateX(-4px);
  transition: opacity 0.2s ease, transform 0.2s ease;
  flex-shrink: 0;
}

.email-row:hover .email-hint {
  opacity: 1;
  transform: translateX(0);
}

/* Socials */
.socials {
  display: flex;
  justify-content: center;
  gap: 12px;
  padding: 1rem 2rem 1.5rem;
  border-top: 0.5px solid var(--border);
}

.social-icon {
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  border: 0.5px solid var(--border);
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 15px;
  transition: all 0.2s ease;
}

.social-icon:hover {
  transform: translateY(-2px);
  color: #fff;
}

.social-ig:hover {
  background: linear-gradient(45deg, #f09433, #e6683c, #dc2743, #cc2366, #bc1888);
  border-color: transparent;
}

.social-fb:hover {
  background: #1877f2;
  border-color: transparent;
}

.social-gh:hover {
  background: #1c1c1a;
  border-color: transparent;
}

[data-theme="dark"] .social-gh:hover {
  background: #f4f4f5;
  color: #18181b;
}

/* Focus states */
a:focus-visible,
button:focus-visible,
.social-icon:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* Mobile */
@media (max-width: 480px) {
  .card { border-radius: 16px; }
  .name { font-size: 19px; }
  .header { padding-top: 1.75rem; }
  .card > *:not(.accent-bar):not(.divider):not(.email-row):not(.socials) {
    padding-left: 1.5rem;
    padding-right: 1.5rem;
  }
  .email-row { padding-left: 1.5rem; padding-right: 1.5rem; }
  .socials { padding-left: 1.5rem; padding-right: 1.5rem; }
  .divider { margin: 0 1.5rem; }
}

/* ─────────────────────────────────────
   Archive page
───────────────────────────────────── */
body.archive-page {
  align-items: flex-start;
  padding: 40px 16px 60px;
}

.archive-wrap {
  max-width: 620px;
  width: 100%;
  margin: 0 auto;
}

/* Top bar */
.top-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 2rem;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

.archive-toggle {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  border: 0.5px solid var(--border);
  background: var(--card-bg);
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  transition: all 0.2s ease;
  position: relative;
}

.archive-toggle:hover {
  color: var(--text-primary);
  border-color: var(--border-hover);
}

.archive-toggle .sun-icon,
.archive-toggle .moon-icon {
  position: absolute;
  transition: opacity 0.2s ease, transform 0.3s ease;
}

[data-theme="light"] .archive-toggle .sun-icon  { opacity: 1; transform: rotate(0); }
[data-theme="light"] .archive-toggle .moon-icon { opacity: 0; transform: rotate(-90deg); }
[data-theme="dark"]  .archive-toggle .sun-icon  { opacity: 0; transform: rotate(90deg); }
[data-theme="dark"]  .archive-toggle .moon-icon { opacity: 1; transform: rotate(0); }

/* Archive header */
.archive-header {
  margin-bottom: 2rem;
}

.archive-header h1 {
  font-size: 22px;
  font-weight: 600;
  letter-spacing: -0.3px;
  margin-bottom: 4px;
}

.archive-header p {
  font-size: 13.5px;
  color: var(--text-secondary);
}

.archive-header p span {
  color: var(--accent);
  font-weight: 500;
}

/* Filter tabs */
.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 1.75rem;
}

.filter-btn {
  font-size: 12px;
  font-weight: 500;
  padding: 5px 13px;
  border-radius: 99px;
  border: 0.5px solid var(--border);
  background: var(--card-bg);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.15s ease;
}

.filter-btn:hover {
  border-color: var(--border-hover);
  color: var(--text-primary);
}

.filter-btn.active {
  background: var(--accent);
  color: #fff;
  border-color: transparent;
}

/* Year section */
.year-group {
  margin-bottom: 2rem;
}

.year-label {
  font-size: 11px;
  font-weight: 600;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.8px;
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.year-label::after {
  content: '';
  flex: 1;
  height: 0.5px;
  background: var(--border);
}

/* Project row */
.project-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 13px 16px;
  border: 0.5px solid var(--border);
  border-radius: 12px;
  margin-bottom: 8px;
  text-decoration: none;
  color: inherit;
  background: var(--card-bg);
  transition: all 0.2s ease;
}

.project-row:hover {
  border-color: var(--border-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
  background: var(--card-bg-hover);
}

.project-icon {
  width: 36px;
  height: 36px;
  border-radius: 9px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  flex-shrink: 0;
}

.icon-blue   { background: var(--badge-blue-bg);   color: var(--badge-blue-fg); }
.icon-green  { background: var(--badge-green-bg);  color: var(--badge-green-fg); }
.icon-amber  { background: var(--badge-amber-bg);  color: var(--badge-amber-fg); }
.icon-purple { background: var(--badge-purple-bg); color: var(--badge-purple-fg); }
.icon-gray   { background: var(--badge-gray-bg);   color: var(--badge-gray-fg); }

.project-body {
  flex: 1;
  min-width: 0;
}

.project-name {
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 2px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.project-meta {
  font-size: 12px;
  color: var(--text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.project-tag {
  font-size: 11px;
  font-weight: 500;
  padding: 3px 9px;
  border-radius: 99px;
  flex-shrink: 0;
}

.project-row .fa-arrow-up-right-from-square {
  font-size: 12px;
  color: var(--text-tertiary);
  flex-shrink: 0;
  transition: color 0.2s ease;
}

.project-row:hover .fa-arrow-up-right-from-square {
  color: var(--accent);
}

/* Archive footer */
.archive-footer {
  text-align: center;
  font-size: 12px;
  color: var(--text-tertiary);
  margin-top: 2.5rem;
}

.archive-footer a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 500;
}

/* Archive mobile */
@media (max-width: 480px) {
  body.archive-page { padding: 24px 16px 48px; }
  .archive-header h1 { font-size: 19px; }
  .project-tag { display: none; }
}