/* ============================================================
   CSS Variables — Dark / Light
   ============================================================ */
:root {
  --bg: #000;
  --bg-secondary: #0a0a0a;
  --bg-card: rgba(255,255,255,0.05);
  --bg-card-hover: rgba(255,255,255,0.08);
  --bg-input: rgba(255,255,255,0.07);
  --border: rgba(255,255,255,0.1);
  --border-focus: rgba(255,255,255,0.35);
  --fg: #f5f5f7;
  --fg-secondary: rgba(245,245,247,0.6);
  --fg-muted: rgba(245,245,247,0.4);
  --accent: #0a84ff;
  --accent-hover: #409cff;
  --accent-rgb: 10,132,255;
  --danger: #ff453a;
  --success: #30d158;
  --warning: #ffd60a;
  --nav-bg: rgba(0,0,0,0.8);
  --nav-height: 52px;
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 18px;
  --shadow: 0 4px 24px rgba(0,0,0,0.4);
  --shadow-lg: 0 12px 48px rgba(0,0,0,0.6);
  --font: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Helvetica Neue", Arial, sans-serif;
  --font-mono: "SF Mono", "Fira Code", "Consolas", monospace;
  --transition: 0.22s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

[data-theme="light"] {
  --bg: #f5f5f7;
  --bg-secondary: #fff;
  --bg-card: rgba(0,0,0,0.03);
  --bg-card-hover: rgba(0,0,0,0.06);
  --bg-input: rgba(0,0,0,0.05);
  --border: rgba(0,0,0,0.1);
  --border-focus: rgba(0,0,0,0.35);
  --fg: #1d1d1f;
  --fg-secondary: rgba(29,29,31,0.65);
  --fg-muted: rgba(29,29,31,0.4);
  --nav-bg: rgba(245,245,247,0.85);
  --shadow: 0 4px 24px rgba(0,0,0,0.1);
  --shadow-lg: 0 12px 48px rgba(0,0,0,0.15);
}

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

html { font-size: 16px; scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

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

a { color: var(--accent); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--accent-hover); }
img { max-width: 100%; height: auto; display: block; }
button { font-family: var(--font); cursor: pointer; border: none; background: none; }

/* ============================================================
   Typography
   ============================================================ */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.2;
  color: var(--fg);
}
p { color: var(--fg-secondary); }

/* ============================================================
   Layout
   ============================================================ */
.container { max-width: 1080px; margin: 0 auto; padding: 0 24px; }
.main-content { padding-top: var(--nav-height); min-height: calc(100vh - 200px); }

/* ============================================================
   Navigation
   ============================================================ */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-height);
  background: var(--nav-bg);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--border);
  z-index: 1000;
  transition: background var(--transition);
}
.nav-inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  gap: 32px;
}
.nav-logo { display: flex; align-items: center; flex-shrink: 0; }
.nav-logo-text {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--fg);
  letter-spacing: -0.03em;
}
.nav-links { display: flex; gap: 4px; flex: 1; }
.nav-link {
  color: var(--fg-secondary);
  font-size: 0.88rem;
  font-weight: 500;
  padding: 6px 10px;
  border-radius: 6px;
  transition: color var(--transition), background var(--transition);
  white-space: nowrap;
}
.nav-link:hover, .nav-link.active {
  color: var(--fg);
  background: var(--bg-card);
}
.nav-actions { display: flex; align-items: center; gap: 4px; margin-left: auto; }
.btn-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 8px;
  color: var(--fg-secondary);
  font-size: 0.78rem;
  font-weight: 600;
  transition: color var(--transition), background var(--transition);
  cursor: pointer;
}
.btn-icon:hover { background: var(--bg-card); color: var(--fg); }
.nav-hamburger { display: none; }

/* ============================================================
   Buttons
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 20px;
  border-radius: 980px;
  font-size: 0.9rem;
  font-weight: 500;
  transition: all var(--transition);
  cursor: pointer;
  white-space: nowrap;
  border: 1px solid transparent;
}
.btn-primary {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}
.btn-primary:hover { background: var(--accent-hover); color: #fff; border-color: var(--accent-hover); }
.btn-secondary {
  background: var(--bg-card);
  color: var(--fg);
  border-color: var(--border);
}
.btn-secondary:hover { background: var(--bg-card-hover); }
.btn-ghost { background: transparent; color: var(--fg-secondary); border-color: transparent; }
.btn-ghost:hover { color: var(--fg); background: var(--bg-card); }
.btn-danger { background: var(--danger); color: #fff; border-color: var(--danger); }
.btn-danger:hover { background: #ff6259; color: #fff; }
.btn-full { width: 100%; justify-content: center; }
.btn-sm { padding: 6px 12px; font-size: 0.8rem; border-radius: 6px; }

/* ============================================================
   Cards
   ============================================================ */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  transition: background var(--transition), border-color var(--transition);
}
.card-link { display: block; text-decoration: none; }
.card-link:hover { color: inherit; }
.card-link:hover .card { border-color: rgba(var(--accent-rgb),0.4); }
.card-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border);
  color: var(--fg-secondary);
}
.card-header h2, .card-header h3 { margin: 0; font-size: 1rem; color: var(--fg); }

/* ============================================================
   Flash Messages
   ============================================================ */
.flash-container { position: fixed; top: 60px; right: 16px; z-index: 9999; display: flex; flex-direction: column; gap: 8px; }
.flash {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  max-width: 360px;
  backdrop-filter: blur(12px);
  border: 1px solid;
  animation: slideIn 0.2s ease;
}
.flash-success { background: rgba(48,209,88,0.15); border-color: rgba(48,209,88,0.4); color: var(--success); }
.flash-error { background: rgba(255,69,58,0.15); border-color: rgba(255,69,58,0.4); color: var(--danger); }
.flash-info { background: var(--bg-card); border-color: var(--border); color: var(--fg); }
.flash-close { cursor: pointer; font-size: 1.1rem; line-height: 1; opacity: 0.7; }
@keyframes slideIn { from { opacity: 0; transform: translateX(20px); } to { opacity: 1; transform: translateX(0); } }

/* ============================================================
   Hero Section
   ============================================================ */
.hero {
  position: relative;
  overflow: hidden;
  padding: 120px 0 80px;
}
.hero-bg-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.15;
  pointer-events: none;
}
.orb-1 { width: 600px; height: 600px; background: var(--accent); top: -200px; right: -100px; }
.orb-2 { width: 400px; height: 400px; background: #bf5af2; bottom: -100px; left: -100px; }
.hero-inner {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 48px;
  align-items: center;
}
.hero-eyebrow { font-size: 1rem; color: var(--fg-muted); margin-bottom: 8px; }
.hero-name { font-size: clamp(2.8rem, 6vw, 4.5rem); font-weight: 700; color: var(--fg); letter-spacing: -0.04em; margin-bottom: 12px; }
.hero-tagline { font-size: 1.1rem; color: var(--accent); font-weight: 500; margin-bottom: 14px; }
.hero-desc { font-size: 1rem; color: var(--fg-secondary); max-width: 500px; margin-bottom: 28px; line-height: 1.7; }
.hero-cta { display: flex; gap: 12px; flex-wrap: wrap; }
.hero-badges { display: flex; align-items: center; }
.badge-grid { display: flex; flex-direction: column; gap: 8px; }

/* ============================================================
   Stats Bar
   ============================================================ */
.stats-bar { background: var(--bg-card); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); padding: 32px 0; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); text-align: center; gap: 16px; }
.stat-item {}
.stat-num { display: block; font-size: 2.2rem; font-weight: 700; color: var(--fg); letter-spacing: -0.04em; }
.stat-small { font-size: 1rem; color: var(--fg-secondary); }
.stat-label { font-size: 0.85rem; color: var(--fg-muted); margin-top: 2px; }

/* ============================================================
   Sections
   ============================================================ */
.section { padding: 80px 0; }
.section-alt { background: var(--bg-secondary); }
.section-header { display: flex; align-items: baseline; justify-content: space-between; margin-bottom: 36px; }
.section-title { font-size: 1.8rem; font-weight: 700; letter-spacing: -0.03em; }
.section-link { font-size: 0.9rem; color: var(--accent); }
.section-link:hover { color: var(--accent-hover); }

/* ============================================================
   Project Cards
   ============================================================ */
.project-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.filter-hidden { display: none !important; }
.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
  overflow: hidden;
}
.project-card:hover {
  border-color: rgba(var(--accent-rgb), 0.4);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}
.project-card-inner { padding: 20px; display: flex; flex-direction: column; height: 100%; }
.project-card-header { display: flex; align-items: center; gap: 8px; margin-bottom: 12px; }
.project-category-badge {
  font-size: 0.72rem;
  font-weight: 600;
  padding: 3px 8px;
  border-radius: 980px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.cat-ml { background: rgba(191,90,242,0.2); color: #bf5af2; }
.cat-ios { background: rgba(10,132,255,0.2); color: #0a84ff; }
.cat-software { background: rgba(48,209,88,0.2); color: #30d158; }
.cat-web { background: rgba(255,214,10,0.2); color: #ffd60a; }
.cat-embedded { background: rgba(255,159,10,0.2); color: #ff9f0a; }
.cat-other { background: rgba(255,255,255,0.1); color: var(--fg-secondary); }

.project-github-link { margin-left: auto; color: var(--fg-muted); }
.project-github-link:hover { color: var(--fg); }
.featured-star { color: #ffd60a; font-size: 0.85rem; }
.project-title { font-size: 1rem; font-weight: 600; margin-bottom: 8px; line-height: 1.3; color: var(--fg); }
.project-summary { font-size: 0.88rem; color: var(--fg-secondary); line-height: 1.5; flex: 1; margin-bottom: 14px; }
.project-tech { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 12px; }
.tech-tag {
  font-size: 0.72rem;
  padding: 3px 8px;
  border-radius: 6px;
  background: var(--bg-input);
  color: var(--fg-secondary);
  border: 1px solid var(--border);
}
.tech-tag-lg { font-size: 0.82rem; padding: 5px 12px; border-radius: 8px; }
.project-card-footer { margin-top: auto; }
.project-detail-link { font-size: 0.82rem; color: var(--accent); }

/* ============================================================
   About section
   ============================================================ */
.about-snippet { display: grid; grid-template-columns: 1.4fr 1fr; gap: 48px; align-items: center; }
.skill-category { margin-bottom: 16px; }
.skill-category h4 { font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--fg-muted); margin-bottom: 8px; }
.skill-list { display: flex; flex-wrap: wrap; gap: 6px; }
.skill-badge, .skill-item {
  font-size: 0.82rem;
  padding: 5px 12px;
  border-radius: 8px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  color: var(--fg-secondary);
}

/* ============================================================
   Page Hero
   ============================================================ */
.page-hero {
  padding: 72px 0 48px;
  border-bottom: 1px solid var(--border);
}
.page-title { font-size: clamp(2rem, 4vw, 2.8rem); font-weight: 700; letter-spacing: -0.04em; margin-bottom: 10px; }
.page-subtitle { font-size: 1.05rem; color: var(--fg-secondary); }
.breadcrumb { display: flex; align-items: center; gap: 8px; font-size: 0.85rem; color: var(--fg-muted); margin-bottom: 16px; }
.breadcrumb a { color: var(--fg-secondary); }
.breadcrumb span { color: var(--fg-muted); }

/* ============================================================
   About page layout
   ============================================================ */
.about-layout { display: grid; grid-template-columns: 1fr; gap: 24px; }
.edu-school { font-size: 1.15rem; font-weight: 700; color: var(--fg); margin-bottom: 4px; }
.edu-degree { color: var(--fg-secondary); font-size: 0.95rem; margin-bottom: 10px; }
.edu-meta { display: flex; flex-wrap: wrap; gap: 12px; font-size: 0.85rem; color: var(--fg-muted); margin-bottom: 12px; }
.edu-honors { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 14px; }
.honor-badge { font-size: 0.78rem; padding: 4px 10px; border-radius: 6px; background: rgba(255,214,10,0.15); color: #ffd60a; border: 1px solid rgba(255,214,10,0.3); }
.edu-courses h4 { font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--fg-muted); margin-bottom: 8px; }
.course-list { display: flex; flex-wrap: wrap; gap: 6px; }
.course-list span { font-size: 0.8rem; padding: 3px 9px; background: var(--bg-input); border: 1px solid var(--border); border-radius: 6px; color: var(--fg-secondary); }
.skill-bars { display: flex; flex-direction: column; gap: 10px; }
.skill-bar-item { display: flex; align-items: center; gap: 12px; font-size: 0.85rem; color: var(--fg-secondary); }
.skill-bar-item span { width: 120px; flex-shrink: 0; }
.bar { flex: 1; height: 4px; background: var(--bg-input); border-radius: 2px; overflow: hidden; }
.bar-fill { height: 100%; background: var(--accent); border-radius: 2px; transition: width 1s ease; }
.skills-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.skill-group h4 { font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--fg-muted); margin-bottom: 10px; }
.tech-tag-list { display: flex; flex-wrap: wrap; gap: 6px; }
.leadership-list { display: flex; flex-direction: column; gap: 16px; }
.leadership-item {}
.leadership-title { font-weight: 600; font-size: 0.95rem; margin-bottom: 2px; }
.leadership-period { font-size: 0.82rem; color: var(--accent); margin-bottom: 4px; }
.leadership-item p { font-size: 0.88rem; }

/* ============================================================
   Awards Timeline
   ============================================================ */
.timeline { position: relative; padding-left: 32px; }
.timeline::before { content: ''; position: absolute; left: 8px; top: 0; bottom: 0; width: 2px; background: var(--border); }
.timeline-item { position: relative; margin-bottom: 32px; }
.timeline-dot {
  position: absolute;
  left: -28px;
  top: 24px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--accent);
  border: 3px solid var(--bg);
  z-index: 1;
}
.timeline-date { font-size: 0.8rem; color: var(--accent); font-weight: 600; margin-bottom: 8px; letter-spacing: 0.04em; }
.timeline-card { }
.award-badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 980px;
  margin-bottom: 10px;
}
.award-first { background: rgba(255,214,10,0.2); color: #ffd60a; border: 1px solid rgba(255,214,10,0.4); }
.award-second { background: rgba(255,159,10,0.15); color: #ff9f0a; border: 1px solid rgba(255,159,10,0.3); }
.award-third { background: var(--bg-input); color: var(--fg-secondary); border: 1px solid var(--border); }
.timeline-card h3 { font-size: 1rem; margin-bottom: 4px; }
.award-role { font-size: 0.82rem; color: var(--fg-muted); margin-bottom: 8px; }
.timeline-card p { font-size: 0.88rem; line-height: 1.6; }
.inline-link { color: var(--accent); text-decoration: underline; text-underline-offset: 2px; }

/* ============================================================
   Blog
   ============================================================ */
.blog-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.blog-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color var(--transition), transform var(--transition);
}
.blog-card:hover { border-color: rgba(var(--accent-rgb), 0.4); transform: translateY(-2px); }
.blog-card-inner { padding: 20px; display: flex; flex-direction: column; gap: 10px; }
.blog-meta { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.blog-date { font-size: 0.78rem; color: var(--fg-muted); font-weight: 500; }
.blog-title { font-size: 1rem; font-weight: 600; color: var(--fg); line-height: 1.3; }
.blog-summary { font-size: 0.88rem; color: var(--fg-secondary); line-height: 1.5; flex: 1; }
.blog-read-more { font-size: 0.82rem; color: var(--accent); }
.blog-post-layout { display: grid; grid-template-columns: 1fr; gap: 24px; max-width: 760px; }
.blog-post-meta { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; font-size: 0.88rem; color: var(--fg-muted); margin-top: 10px; }
.blog-post-content { font-size: 0.97rem; line-height: 1.75; }
.blog-post-content h1,.blog-post-content h2,.blog-post-content h3 { margin: 2em 0 0.5em; }
.blog-post-content p { margin-bottom: 1em; }
.blog-post-content code { background: var(--bg-input); padding: 2px 6px; border-radius: 4px; font-family: var(--font-mono); font-size: 0.9em; }
.blog-post-content pre { background: var(--bg-input); padding: 16px; border-radius: var(--radius-sm); overflow-x: auto; margin-bottom: 1em; }
.blog-post-content ul,.blog-post-content ol { padding-left: 1.5em; margin-bottom: 1em; }
.blog-post-nav { margin-top: 8px; }

/* ============================================================
   Project Detail
   ============================================================ */
.project-detail-layout { display: grid; grid-template-columns: 1fr 300px; gap: 24px; align-items: start; }
.project-detail-main { display: flex; flex-direction: column; gap: 20px; }
.project-detail-sidebar { display: flex; flex-direction: column; gap: 16px; position: sticky; top: calc(var(--nav-height) + 20px); }
.project-meta-row { display: flex; align-items: center; gap: 12px; margin-top: 12px; flex-wrap: wrap; }
.meta-link { display: flex; align-items: center; gap: 6px; font-size: 0.88rem; color: var(--fg-secondary); padding: 5px 12px; border: 1px solid var(--border); border-radius: 6px; }
.meta-link:hover { color: var(--fg); border-color: var(--border-focus); }
.project-description { font-size: 0.95rem; line-height: 1.75; color: var(--fg-secondary); white-space: pre-line; }
.project-tech-full { display: flex; flex-wrap: wrap; gap: 8px; }
.project-cover { border-radius: var(--radius); overflow: hidden; }
.project-cover img { width: 100%; border-radius: var(--radius); }
.file-list { display: flex; flex-direction: column; gap: 8px; }
.file-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--fg);
  transition: border-color var(--transition), background var(--transition);
}
.file-item:hover { border-color: var(--accent); background: var(--bg-card-hover); color: var(--fg); }
.file-icon { font-size: 1.2rem; flex-shrink: 0; }
.file-info { flex: 1; display: flex; flex-direction: column; min-width: 0; }
.file-name { font-size: 0.85rem; font-weight: 500; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.file-desc { font-size: 0.75rem; color: var(--fg-muted); }
.file-size { font-size: 0.75rem; color: var(--fg-muted); }
.file-dl-icon { flex-shrink: 0; color: var(--fg-muted); }
.project-info-list { display: flex; flex-direction: column; gap: 10px; }
.info-row { display: flex; align-items: center; justify-content: space-between; font-size: 0.88rem; }
.info-label { color: var(--fg-muted); }
.info-link { color: var(--accent); }

/* ============================================================
   Contact
   ============================================================ */
.contact-layout { display: flex; flex-direction: column; gap: 20px; max-width: 680px; }
.contact-cards { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.contact-card {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 18px 20px;
  transition: border-color var(--transition), transform var(--transition);
  text-decoration: none;
  color: var(--fg);
}
.contact-card:hover { border-color: var(--accent); transform: translateY(-1px); color: var(--fg); }
.contact-icon { color: var(--accent); flex-shrink: 0; }
.contact-info { flex: 1; }
.contact-info h3 { font-size: 0.95rem; font-weight: 600; margin-bottom: 2px; }
.contact-info span { font-size: 0.82rem; color: var(--fg-muted); }
.contact-arrow { color: var(--fg-muted); flex-shrink: 0; }
.contact-note { padding: 20px; }
.contact-note h3 { font-size: 1rem; margin-bottom: 10px; }
.contact-note p { font-size: 0.9rem; }

/* ============================================================
   Filter tabs
   ============================================================ */
.filter-tabs { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 28px; }
.filter-btn {
  padding: 7px 16px;
  border-radius: 980px;
  font-size: 0.85rem;
  font-weight: 500;
  background: var(--bg-card);
  color: var(--fg-secondary);
  border: 1px solid var(--border);
  transition: all var(--transition);
  cursor: pointer;
}
.filter-btn:hover, .filter-btn.active { background: var(--accent); color: #fff; border-color: var(--accent); }

/* ============================================================
   Other projects mini-grid
   ============================================================ */
.other-projects-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 14px; }
.other-project-item { padding: 16px; background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-sm); }
.other-project-item h4 { font-size: 0.9rem; font-weight: 600; margin-bottom: 6px; }
.tag { font-size: 0.75rem; color: var(--fg-muted); }

/* ============================================================
   Empty state
   ============================================================ */
.empty-state { text-align: center; padding: 80px 20px; color: var(--fg-secondary); }
.empty-icon { font-size: 3rem; margin-bottom: 16px; }
.empty-state h3 { font-size: 1.1rem; margin-bottom: 8px; }
.empty-state p { font-size: 0.9rem; }

/* ============================================================
   Footer
   ============================================================ */
.footer {
  border-top: 1px solid var(--border);
  padding: 24px 0;
  color: var(--fg-muted);
  font-size: 0.85rem;
}
.footer-inner { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; }
.footer-links { display: flex; gap: 16px; }
.footer-links a { color: var(--fg-muted); }
.footer-links a:hover { color: var(--fg); }

/* ============================================================
   Animations
   ============================================================ */
.animate-fade-up { opacity: 0; transform: translateY(20px); animation: fadeUp 0.6s ease forwards; }
.delay-1 { animation-delay: 0.08s; }
.delay-2 { animation-delay: 0.16s; }
.delay-3 { animation-delay: 0.24s; }
.delay-4 { animation-delay: 0.32s; }
@keyframes fadeUp { to { opacity: 1; transform: translateY(0); } }

/* ============================================================
   Form styles (shared public/admin)
   ============================================================ */
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group label { font-size: 0.85rem; font-weight: 500; color: var(--fg-secondary); }
.form-input {
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  color: var(--fg);
  font-size: 0.9rem;
  font-family: var(--font);
  transition: border-color var(--transition);
  outline: none;
  width: 100%;
}
.form-input:focus { border-color: var(--border-focus); }
.form-textarea { resize: vertical; }
.form-textarea-sm { min-height: 60px; }
.form-textarea-md { min-height: 300px; }
.form-select { cursor: pointer; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-actions { display: flex; gap: 12px; padding-top: 8px; }
.form-hint { font-size: 0.78rem; color: var(--fg-muted); font-weight: 400; }
.form-checkbox { display: flex; align-items: center; gap: 8px; cursor: pointer; font-size: 0.9rem; color: var(--fg-secondary); }
.form-checkbox input { width: 16px; height: 16px; accent-color: var(--accent); }

/* ============================================================
   Utilities
   ============================================================ */
.text-mono { font-family: var(--font-mono); }
.text-sm { font-size: 0.82rem; }
.text-muted { color: var(--fg-muted); }
.text-center { text-align: center; }

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 960px) {
  .project-grid { grid-template-columns: repeat(2, 1fr); }
  .blog-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .nav-links { display: none; flex-direction: column; position: absolute; top: var(--nav-height); left: 0; right: 0; background: var(--nav-bg); backdrop-filter: blur(20px); border-bottom: 1px solid var(--border); padding: 12px; gap: 4px; }
  .nav-links.open { display: flex; }
  .nav-hamburger { display: flex; }
  .hero-inner { grid-template-columns: 1fr; }
  .hero-badges { display: none; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .about-snippet { grid-template-columns: 1fr; }
  .project-detail-layout { grid-template-columns: 1fr; }
  .project-detail-sidebar { position: static; }
  .contact-cards { grid-template-columns: 1fr; }
  .skills-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
}

@media (max-width: 540px) {
  .project-grid { grid-template-columns: 1fr; }
  .blog-grid { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .section { padding: 56px 0; }
  .page-hero { padding: 48px 0 32px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
}