/* ============================================================
   SHAHID AHMED SHARIFF — Portfolio
   Design System: High-End Corporate Professional
   Inspired by: Vercel, Linear, Stripe
   ============================================================ */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

:root {
  --bg-base:      #0a0a0a;
  --bg-surface:   #111111;
  --bg-elevated:  #1a1a1a;
  --bg-card:      #141414;
  --bg-input:     #0f0f0f;
  --accent:       #2563eb;
  --accent-hover: #1d4ed8;
  --accent-muted: rgba(37, 99, 235, 0.12);
  --accent-ring:  rgba(37, 99, 235, 0.25);
  --green:        #22c55e;
  --green-muted:  rgba(34, 197, 94, 0.12);
  --text-primary:   #ededed;
  --text-secondary: #a1a1aa;
  --text-muted:     #52525b;
  --border:       #2a2a2a;
  --border-hover: #3f3f3f;
  --border-focus: #2563eb;
  --shadow-sm:  0 1px 2px rgba(0,0,0,0.4);
  --shadow-md:  0 4px 12px rgba(0,0,0,0.4);
  --shadow-lg:  0 8px 24px rgba(0,0,0,0.5);
  --shadow-xl:  0 16px 40px rgba(0,0,0,0.6);
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --radius-sm:  4px;
  --radius-md:  8px;
  --radius-lg:  12px;
  --radius-xl:  16px;
  --t-fast:   0.15s ease;
  --t-smooth: 0.25s ease;
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

body {
  background: var(--bg-base);
  color: var(--text-primary);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.6;
  overflow-x: hidden;
}

::selection { background: rgba(37, 99, 235, 0.3); color: #fff; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }

#cursor-outer, #cursor-inner { display: none; }

#scroll-progress {
  position: fixed;
  top: 0; left: 0;
  z-index: 1000;
  height: 2px;
  width: 0%;
  background: var(--accent);
  transition: width 0.1s linear;
}

nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 900;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 6vw;
  height: 60px;
  background: rgba(10, 10, 10, 0.85);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: background var(--t-smooth), border-color var(--t-smooth);
}

nav.scrolled {
  background: rgba(10, 10, 10, 0.96);
  border-bottom-color: var(--border-hover);
}

.nav-logo { font-size: 0.95rem; font-weight: 600; color: var(--text-primary); letter-spacing: -0.01em; }
.nav-logo span { color: var(--text-muted); font-weight: 400; }

.nav-links { display: flex; gap: 1.75rem; list-style: none; align-items: center; }
.nav-links a { font-size: 0.85rem; font-weight: 500; color: var(--text-secondary); transition: color var(--t-fast); }
.nav-links a:hover { color: var(--text-primary); }
.nav-links a::after { display: none; }

.nav-cta {
  padding: 0.4rem 1rem !important;
  border: 1px solid var(--border-hover) !important;
  border-radius: var(--radius-md) !important;
  color: var(--text-primary) !important;
  background: var(--bg-elevated) !important;
  transition: background var(--t-fast), border-color var(--t-fast) !important;
}
.nav-cta:hover { background: var(--bg-card) !important; border-color: var(--border-focus) !important; }

.nav-hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; }
.nav-hamburger span { width: 22px; height: 1.5px; background: var(--text-secondary); border-radius: 2px; }

#hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 80px 6vw 0;
  background: var(--bg-base);
}

#hero-canvas { display: none; }
#spotlight   { display: none; }

.hero-inner {
  position: relative; z-index: 1;
  display: grid; grid-template-columns: 1fr 1fr;
  align-items: center; gap: 5rem;
  width: 100%; max-width: 1200px;
  margin: 0 auto; padding-top: 3rem;
}

.hero-left { display: flex; flex-direction: column; gap: 1.25rem; }

.hero-badge {
  display: inline-flex; align-items: center; gap: 0.5rem;
  padding: 0.35rem 0.85rem;
  background: var(--green-muted);
  border: 1px solid rgba(34, 197, 94, 0.25);
  border-radius: 999px;
  font-size: 0.78rem; font-weight: 500; color: var(--green);
  width: fit-content;
}

.hero-badge .dot {
  width: 6px; height: 6px;
  background: var(--green); border-radius: 50%;
  animation: pulse-dot 2.5s ease-in-out infinite;
  box-shadow: none;
}

.hero-badge.open-to-work { background: var(--green-muted); border-color: rgba(34, 197, 94, 0.25); color: var(--green); }
.hero-badge.open-to-work .dot { background: var(--green); box-shadow: none; }

@keyframes pulse-dot { 0%, 100% { opacity: 1; } 50% { opacity: 0.3; } }

.hero-name {
  font-size: clamp(2.6rem, 5.5vw, 4.5rem);
  font-weight: 800; line-height: 1.08; letter-spacing: -0.04em;
  color: var(--text-primary);
  background: none; -webkit-text-fill-color: var(--text-primary);
}

.hero-role-line { font-size: 1rem; font-weight: 400; color: var(--text-secondary); }

.hero-typewriter { font-size: clamp(1rem, 1.8vw, 1.2rem); font-weight: 600; color: var(--accent); min-height: 1.8rem; }
.hero-typewriter .typed-cursor { color: var(--accent); }

.hero-description { max-width: 500px; font-size: 0.97rem; color: var(--text-secondary); line-height: 1.75; }
.hero-actions { display: flex; gap: 0.75rem; flex-wrap: wrap; margin-top: 0.5rem; }

.btn-primary {
  display: inline-flex; align-items: center; gap: 0.5rem;
  padding: 0.72rem 1.5rem;
  background: var(--accent); border-radius: var(--radius-md);
  font-weight: 600; font-size: 0.88rem; color: #fff;
  border: 1px solid transparent;
  transition: background var(--t-fast), box-shadow var(--t-fast);
}
.btn-primary::before { display: none; }
.btn-primary:hover { background: var(--accent-hover); box-shadow: 0 0 0 3px var(--accent-ring); transform: none; }

.btn-ghost {
  display: inline-flex; align-items: center; gap: 0.5rem;
  padding: 0.72rem 1.5rem;
  border: 1px solid var(--border-hover); border-radius: var(--radius-md);
  font-weight: 500; font-size: 0.88rem; color: var(--text-secondary);
  transition: color var(--t-fast), border-color var(--t-fast), background var(--t-fast);
}
.btn-ghost:hover { border-color: var(--border-focus); color: var(--text-primary); background: var(--bg-elevated); }

.btn-resume {
  display: inline-flex; align-items: center; gap: 0.5rem;
  padding: 0.72rem 1.5rem;
  border: 1px solid var(--border-hover); border-radius: var(--radius-md);
  font-weight: 500; font-size: 0.88rem; color: var(--text-secondary);
  transition: color var(--t-fast), border-color var(--t-fast), background var(--t-fast);
  text-decoration: none; background: transparent;
}
.btn-resume:hover { border-color: var(--border-focus); color: var(--text-primary); background: var(--bg-elevated); box-shadow: none; transform: none; }

.hero-right { display: flex; justify-content: center; align-items: center; }
.hero-photo-wrapper { position: relative; width: clamp(260px, 28vw, 380px); height: clamp(260px, 28vw, 380px); }
.hero-photo-glow { display: none; }
.hero-photo-ring { display: none; }
.hero-tech-icons { display: none; }
.hero-photo { width: 100%; height: 100%; border-radius: var(--radius-xl); object-fit: cover; border: 1px solid var(--border); filter: none; }

.hero-scroll-hint {
  position: absolute; bottom: 32px; left: 50%; transform: translateX(-50%); z-index: 2;
  display: flex; flex-direction: column; align-items: center; gap: 6px;
  font-size: 0.7rem; color: var(--text-muted); letter-spacing: 0.08em; text-transform: uppercase;
}
.scroll-arrow { width: 18px; height: 28px; border: 1px solid var(--border); border-radius: 9px; display: flex; justify-content: center; padding-top: 5px; }
.scroll-arrow::before { content: ''; width: 3px; height: 7px; background: var(--text-muted); border-radius: 2px; animation: scroll-dot 2s infinite; }
@keyframes scroll-dot { 0% { transform: translateY(0); opacity: 1; } 100% { transform: translateY(8px); opacity: 0; } }

#stats {
  padding: 4rem 6vw;
  background: var(--bg-surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
#stats::before { display: none; }

.stats-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 0; max-width: 900px; margin: 0 auto; }

.stat-card {
  display: flex; flex-direction: column; align-items: center; gap: 0.4rem;
  padding: 1.5rem 1rem; text-align: center; position: relative;
  background: transparent; border: none; backdrop-filter: none; transition: none;
}
.stat-card::before { display: none; }
.stat-card:hover { transform: none; box-shadow: none; }

.stat-card + .stat-card::after {
  content: ''; position: absolute; left: 0; top: 20%; height: 60%; width: 1px; background: var(--border);
}

.stat-number {
  font-size: 2.25rem; font-weight: 700; color: var(--text-primary); line-height: 1;
  background: none; -webkit-background-clip: unset; -webkit-text-fill-color: var(--text-primary);
}
.stat-label { font-size: 0.75rem; color: var(--text-muted); font-weight: 500; letter-spacing: 0.03em; text-transform: uppercase; }

section { padding: 6rem 6vw; position: relative; }
.section-header { margin-bottom: 3.5rem; }
.section-tag { display: block; font-size: 0.72rem; font-weight: 600; color: var(--accent); letter-spacing: 0.1em; text-transform: uppercase; margin-bottom: 0.75rem; }
.section-title { font-size: clamp(1.75rem, 3.5vw, 2.5rem); font-weight: 700; letter-spacing: -0.03em; line-height: 1.15; color: var(--text-primary); background: none; -webkit-background-clip: unset; -webkit-text-fill-color: var(--text-primary); }
.section-subtitle { margin-top: 0.75rem; font-size: 0.97rem; color: var(--text-secondary); max-width: 520px; line-height: 1.65; }
.section-header.centered { text-align: center; }
.section-header.centered .section-subtitle { margin-left: auto; margin-right: auto; }

.reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }
.reveal-left { opacity: 0; transform: translateX(-24px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal-left.visible { opacity: 1; transform: translateX(0); }
.reveal-right { opacity: 0; transform: translateX(24px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal-right.visible { opacity: 1; transform: translateX(0); }

#about { background: var(--bg-base); }
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 5rem; align-items: start; max-width: 1100px; margin: 0 auto; }
.about-text h3 { font-size: 1.1rem; font-weight: 600; color: var(--text-primary); margin-bottom: 1rem; background: none; -webkit-background-clip: unset; -webkit-text-fill-color: var(--text-primary); }
.about-text p { color: var(--text-secondary); margin-bottom: 1rem; line-height: 1.8; font-size: 0.95rem; }
.about-tags { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: 1.5rem; }
.tag { padding: 0.28rem 0.75rem; background: var(--bg-elevated); border: 1px solid var(--border); border-radius: var(--radius-sm); font-size: 0.78rem; font-weight: 500; color: var(--text-secondary); }

.timeline { position: relative; padding-left: 1.5rem; border-left: 1px solid var(--border); }
.timeline::before { display: none; }
.timeline-item { position: relative; margin-bottom: 2rem; padding-left: 1.25rem; }
.timeline-item::before { content: ''; position: absolute; left: -1.875rem; top: 0.45rem; width: 8px; height: 8px; border-radius: 50%; background: var(--bg-elevated); border: 2px solid var(--border-hover); box-shadow: none; }
.timeline-year { font-size: 0.72rem; font-weight: 600; color: var(--accent); letter-spacing: 0.06em; text-transform: uppercase; margin-bottom: 0.2rem; }
.timeline-title { font-size: 0.95rem; font-weight: 600; color: var(--text-primary); margin-bottom: 0.2rem; }
.timeline-desc { font-size: 0.85rem; color: var(--text-secondary); line-height: 1.65; }

#education { background: var(--bg-surface); padding: 5rem 6vw; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.education-card { display: flex; align-items: center; gap: 2rem; padding: 2.5rem; background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-xl); max-width: 780px; margin: 0 auto; transition: border-color var(--t-smooth), box-shadow var(--t-smooth); position: relative; overflow: hidden; }
.education-card::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 2px; background: var(--accent); }
.education-card::after { display: none; }
.education-card:hover { border-color: var(--border-hover); box-shadow: var(--shadow-md); transform: none; }
.edu-icon { font-size: 2.5rem; flex-shrink: 0; filter: none; position: relative; z-index: 1; }
.edu-details { position: relative; z-index: 1; }
.edu-degree { font-size: clamp(1.1rem, 2vw, 1.4rem); font-weight: 700; color: var(--text-primary); margin-bottom: 0.35rem; line-height: 1.25; background: none; -webkit-background-clip: unset; -webkit-text-fill-color: var(--text-primary); }
.edu-college { font-size: 0.9rem; font-weight: 500; color: var(--accent); margin-bottom: 1rem; }
.edu-meta { display: flex; gap: 0.5rem; flex-wrap: wrap; }
.edu-badge { padding: 0.25rem 0.7rem; background: var(--bg-elevated); border: 1px solid var(--border); border-radius: var(--radius-sm); font-size: 0.75rem; color: var(--text-secondary); font-weight: 500; }

#experience { background: var(--bg-base); }
.experience-timeline { max-width: 900px; margin: 0 auto; }
.exp-item { display: grid; grid-template-columns: 160px 1fr; gap: 2.5rem; align-items: start; padding: 2.5rem; background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-xl); position: relative; overflow: hidden; transition: border-color var(--t-smooth), box-shadow var(--t-smooth); }
.exp-item::before { content: ''; position: absolute; left: 0; top: 0; bottom: 0; width: 2px; background: var(--accent); }
.exp-item::after { display: none; }
.exp-item:hover { border-color: var(--border-hover); box-shadow: var(--shadow-md); transform: none; }
.exp-left { padding-top: 0.2rem; position: relative; z-index: 1; }
.exp-period { font-size: 0.8rem; font-weight: 600; color: var(--text-muted); margin-bottom: 0.5rem; letter-spacing: 0.03em; }
.exp-type { display: inline-block; padding: 0.22rem 0.65rem; background: var(--accent-muted); border: 1px solid rgba(37, 99, 235, 0.25); border-radius: var(--radius-sm); font-size: 0.68rem; color: var(--accent); font-weight: 600; text-transform: uppercase; letter-spacing: 0.08em; }
.exp-right { position: relative; z-index: 1; }
.exp-role { font-size: clamp(1.05rem, 1.8vw, 1.3rem); font-weight: 700; color: var(--text-primary); margin-bottom: 0.25rem; line-height: 1.25; background: none; -webkit-background-clip: unset; -webkit-text-fill-color: var(--text-primary); }
.exp-company { font-size: 0.82rem; color: var(--text-muted); margin-bottom: 1rem; }
.exp-desc { font-size: 0.92rem; color: var(--text-secondary); line-height: 1.75; margin-bottom: 1rem; }
.exp-bullets { list-style: none; margin-bottom: 1.5rem; }
.exp-bullets li { position: relative; padding-left: 1.2rem; margin-bottom: 0.55rem; font-size: 0.9rem; color: var(--text-secondary); line-height: 1.65; }
.exp-bullets li::before { content: '-'; position: absolute; left: 0; color: var(--text-muted); }
.exp-bullets li strong { color: var(--text-primary); font-weight: 600; }
.exp-tags { display: flex; flex-wrap: wrap; gap: 0.4rem; }

#projects { background: var(--bg-surface); }
.projects-list {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  align-items: stretch;
}
.project-item {
  display: flex;
  flex-direction: column;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: border-color var(--t-smooth), box-shadow var(--t-smooth);
  cursor: pointer;
}
.project-item::before { display: none; }
.project-item:hover { border-color: var(--border-hover); box-shadow: var(--shadow-lg); transform: none; }

.project-visual {
  background: var(--bg-elevated);
  border: none;
  border-bottom: 1px solid var(--border);
  border-radius: 0;
  min-height: 200px;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  flex-shrink: 0;
}

.project-screen { width: 100%; height: 100%; display: flex; flex-direction: column; background: var(--bg-elevated); overflow: hidden; position: relative; }
.project-screen::before { content: ''; display: block; height: 28px; background: var(--bg-card); border-bottom: 1px solid var(--border); flex-shrink: 0; }
.project-screen::after { content: ''; position: absolute; top: 9px; left: 12px; width: 7px; height: 7px; border-radius: 50%; background: var(--border-hover); box-shadow: 14px 0 0 var(--border-hover), 28px 0 0 var(--border-hover); }

.project-icon-large { display: none; }
.project-screen-content { flex: 1; padding: 1.2rem 1.4rem; display: flex; flex-direction: column; gap: 0.55rem; overflow: hidden; }
.psc-line { height: 10px; border-radius: 3px; background: rgba(255,255,255,0.04); position: relative; overflow: hidden; }
.psc-line::before { content: ''; position: absolute; left: 0; top: 0; height: 100%; border-radius: 3px; opacity: 0.5; }
.psc-line.kw::before  { width: 44px;  background: #6b7280; }
.psc-line.fn::before  { width: 86px;  background: #9ca3af; }
.psc-line.str::before { width: 120px; background: #6b7280; }
.psc-line.cmt::before { width: 100px; background: #374151; opacity: 0.7; }
.psc-line.var::before { width: 65px;  background: #9ca3af; }
.psc-line.indent { padding-left: 1.2rem; }
.psc-line.indent::before { left: 1.2rem; }
.psc-line.blank { height: 6px; background: transparent; }

.project-info { padding: 2rem; display: flex; flex-direction: column; justify-content: flex-start; flex: 1; }
.project-number { font-size: 0.68rem; font-weight: 600; color: var(--text-muted); letter-spacing: 0.1em; text-transform: uppercase; margin-bottom: 0.6rem; }
.project-name { font-size: clamp(1rem, 1.6vw, 1.3rem); font-weight: 700; line-height: 1.2; margin-bottom: 0.85rem; color: var(--text-primary); background: none; -webkit-background-clip: unset; -webkit-text-fill-color: var(--text-primary); }
.project-desc { font-size: 0.88rem; color: var(--text-secondary); line-height: 1.7; margin-bottom: 1.25rem; flex: 1; }
.project-tech { display: flex; flex-wrap: wrap; gap: 0.4rem; margin-bottom: 1.5rem; }
.tech-badge { padding: 0.2rem 0.6rem; background: var(--bg-elevated); border: 1px solid var(--border); border-radius: var(--radius-sm); font-size: 0.7rem; font-weight: 500; color: var(--text-secondary); }
.project-actions { display: flex; gap: 0.6rem; align-items: center; flex-wrap: wrap; margin-top: auto; }
.btn-project { display: inline-flex; align-items: center; gap: 0.4rem; padding: 0.5rem 1rem; border: 1px solid var(--border-hover); border-radius: var(--radius-md); font-size: 0.8rem; font-weight: 500; color: var(--text-secondary); transition: color var(--t-fast), border-color var(--t-fast), background var(--t-fast); background: transparent; cursor: pointer; }
.btn-project:hover { border-color: var(--border-focus); color: var(--text-primary); background: var(--bg-elevated); }
.btn-project.primary { background: var(--accent); border-color: transparent; color: #fff; }
.btn-project.primary:hover { background: var(--accent-hover); border-color: transparent; }

#project-modal { position: fixed; inset: 0; z-index: 9000; display: none; align-items: center; justify-content: center; padding: 2rem; }
#project-modal.open { display: flex; }
.modal-backdrop { position: absolute; inset: 0; background: rgba(0, 0, 0, 0.75); backdrop-filter: blur(6px); }
.modal-box { position: relative; z-index: 1; width: 100%; max-width: 820px; max-height: 90vh; background: var(--bg-card); border: 1px solid var(--border-hover); border-radius: var(--radius-xl); overflow-y: auto; box-shadow: var(--shadow-xl); animation: modal-in 0.2s ease; }
@keyframes modal-in { from { opacity: 0; transform: scale(0.96) translateY(12px); } to { opacity: 1; transform: scale(1) translateY(0); } }
.modal-header { padding: 2rem 2rem 0; display: flex; justify-content: space-between; align-items: start; }
.modal-close { width: 32px; height: 32px; border: 1px solid var(--border); border-radius: var(--radius-md); display: flex; align-items: center; justify-content: center; font-size: 1rem; color: var(--text-muted); transition: border-color var(--t-fast), color var(--t-fast); flex-shrink: 0; cursor: pointer; }
.modal-close:hover { border-color: var(--border-hover); color: var(--text-primary); }
.modal-body { padding: 1.5rem 2rem 2rem; }
.modal-body h4 { font-size: 0.68rem; font-weight: 600; color: var(--accent); letter-spacing: 0.1em; text-transform: uppercase; margin-bottom: 0.5rem; margin-top: 1.5rem; }
.modal-body p, .modal-body ul { color: var(--text-secondary); font-size: 0.9rem; line-height: 1.7; }
.modal-body ul { padding-left: 1.2rem; }
.modal-body li { margin-bottom: 0.35rem; }
.modal-body li::marker { color: var(--accent); }
.modal-arch { background: var(--bg-elevated); border: 1px solid var(--border); border-radius: var(--radius-md); padding: 1.25rem 1.5rem; font-family: 'Courier New', monospace; font-size: 0.8rem; color: var(--text-secondary); line-height: 1.6; margin-top: 0.5rem; white-space: pre; overflow-x: auto; }

#interests { background: var(--bg-base); }
.interests-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 1rem; max-width: 1100px; margin: 0 auto; }
.interest-card { padding: 2rem 1.5rem; background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-lg); text-align: center; transition: border-color var(--t-smooth), box-shadow var(--t-smooth); }
.interest-card::before { display: none; }
.interest-card[data-color]::before { display: none; }
.interest-card:hover { border-color: var(--border-hover); box-shadow: var(--shadow-md); transform: none; }
.interest-icon { font-size: 2rem; margin-bottom: 0.85rem; display: block; filter: none; }
.interest-card:hover .interest-icon { transform: none; }
.interest-name { font-size: 0.92rem; font-weight: 600; color: var(--text-primary); margin-bottom: 0.35rem; }
.interest-desc { font-size: 0.78rem; color: var(--text-muted); line-height: 1.5; }

#skills { background: var(--bg-surface); }
.skills-wrapper { max-width: 1100px; margin: 0 auto; }
.skills-tabs { display: flex; gap: 0.25rem; flex-wrap: wrap; margin-bottom: 2rem; padding: 0.3rem; background: var(--bg-elevated); border-radius: var(--radius-md); border: 1px solid var(--border); width: fit-content; }
.skill-tab { padding: 0.4rem 1rem; border-radius: 6px; font-size: 0.8rem; font-weight: 500; color: var(--text-muted); transition: background var(--t-fast), color var(--t-fast); cursor: pointer; }
.skill-tab.active, .skill-tab:hover { background: var(--bg-card); color: var(--text-primary); }
.skill-tab.active { box-shadow: none; }
.skills-panel { display: none; }
.skills-panel.active { display: grid; grid-template-columns: repeat(auto-fill, minmax(120px, 1fr)); gap: 0.75rem; }
.skill-node { display: flex; flex-direction: column; align-items: center; gap: 0.5rem; padding: 1.2rem 0.75rem; background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-lg); text-align: center; transition: border-color var(--t-fast); cursor: default; }
.skill-node::after { display: none; }
.skill-node:hover { border-color: var(--border-hover); transform: none; }
.skill-icon { font-size: 1.6rem; }
.skill-name { font-size: 0.7rem; font-weight: 500; color: var(--text-secondary); letter-spacing: 0.02em; }

#github { background: var(--bg-base); }
.github-wrapper { max-width: 1000px; margin: 0 auto; }
.github-profile-card { display: flex; align-items: center; gap: 2rem; padding: 1.75rem 2rem; background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-xl); margin-bottom: 1.5rem; transition: border-color var(--t-smooth); }
.github-profile-card:hover { border-color: var(--border-hover); box-shadow: none; }
.github-avatar { width: 60px; height: 60px; border-radius: 50%; border: 1px solid var(--border); object-fit: cover; }
.github-avatar-placeholder { width: 60px; height: 60px; border-radius: 50%; background: var(--bg-elevated); border: 1px solid var(--border); display: flex; align-items: center; justify-content: center; font-size: 1.5rem; }
.github-info h3 { font-size: 1.1rem; font-weight: 600; color: var(--text-primary); }
.github-info p { color: var(--text-secondary); font-size: 0.87rem; }
.github-info .github-handle { color: var(--accent); font-size: 0.82rem; font-weight: 500; }
.github-stats-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; margin-top: auto; margin-left: auto; }
.github-stat { text-align: center; }
.github-stat-num { font-size: 1.4rem; font-weight: 700; color: var(--text-primary); }
.github-stat-label { font-size: 0.7rem; color: var(--text-muted); font-weight: 500; letter-spacing: 0.04em; text-transform: uppercase; }
.github-repos { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 1rem; }
.repo-card { padding: 1.5rem; background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-lg); transition: border-color var(--t-smooth); cursor: pointer; }
.repo-card:hover { border-color: var(--border-hover); transform: none; box-shadow: none; }
.repo-card h4 { font-size: 0.9rem; font-weight: 600; color: var(--text-primary); margin-bottom: 0.5rem; }
.repo-card p { font-size: 0.8rem; color: var(--text-muted); line-height: 1.5; margin-bottom: 1rem; }
.repo-meta { display: flex; gap: 1rem; font-size: 0.73rem; color: var(--text-muted); font-weight: 500; }
.repo-lang-dot { width: 8px; height: 8px; border-radius: 50%; display: inline-block; margin-right: 4px; }
.github-loading { text-align: center; padding: 3rem; color: var(--text-muted); font-size: 0.87rem; }

#achievements { background: var(--bg-surface); }
.achievements-timeline { max-width: 760px; margin: 0 auto; position: relative; }
.achievements-timeline::before { content: ''; position: absolute; left: 130px; top: 0; bottom: 0; width: 1px; background: var(--border); }
.achievement-item { display: grid; grid-template-columns: 130px 1fr; gap: 0; margin-bottom: 2.5rem; position: relative; }
.achievement-item::after { content: ''; position: absolute; left: 124px; top: 0.4rem; width: 10px; height: 10px; border-radius: 50%; background: var(--bg-base); border: 2px solid var(--border-hover); box-shadow: none; }
.achievement-meta { padding-right: 2rem; text-align: right; }
.achievement-year { font-size: 0.75rem; font-weight: 600; color: var(--text-muted); letter-spacing: 0.05em; text-transform: uppercase; }
.achievement-category { font-size: 0.68rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.05em; margin-top: 0.1rem; }
.achievement-content { padding-left: 2.5rem; }
.achievement-content h3 { font-size: 0.97rem; font-weight: 600; color: var(--text-primary); margin-bottom: 0.25rem; }
.achievement-content p { font-size: 0.85rem; color: var(--text-secondary); line-height: 1.65; }

#contact { background: var(--bg-base); }
.contact-grid { display: grid; grid-template-columns: 1fr 1.5fr; gap: 3.5rem; max-width: 1000px; margin: 0 auto; align-items: start; }
.contact-info h3 { font-size: 1.25rem; font-weight: 600; color: var(--text-primary); margin-bottom: 1.5rem; background: none; -webkit-background-clip: unset; -webkit-text-fill-color: var(--text-primary); }
.contact-links { display: flex; flex-direction: column; gap: 0.75rem; }
.contact-link { display: flex; align-items: center; gap: 1rem; padding: 0.9rem 1rem; background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-lg); transition: border-color var(--t-smooth); }
.contact-link:hover { border-color: var(--border-hover); transform: none; box-shadow: none; }
.contact-link-icon { font-size: 1.1rem; width: 32px; text-align: center; }
.contact-link-info .label { font-size: 0.68rem; font-weight: 600; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.08em; }
.contact-link-info .value { font-size: 0.87rem; color: var(--text-primary); font-weight: 500; }
.contact-form { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-xl); padding: 2rem; }
.form-row { margin-bottom: 1rem; }
.form-row label { display: block; font-size: 0.75rem; font-weight: 600; color: var(--text-secondary); letter-spacing: 0.04em; margin-bottom: 0.45rem; text-transform: uppercase; }
.form-row input, .form-row textarea { width: 100%; padding: 0.75rem 0.9rem; background: var(--bg-input); border: 1px solid var(--border); border-radius: var(--radius-md); color: var(--text-primary); font-family: var(--font); font-size: 0.9rem; outline: none; transition: border-color var(--t-fast), box-shadow var(--t-fast); }
.form-row input::placeholder, .form-row textarea::placeholder { color: var(--text-muted); }
.form-row input:focus, .form-row textarea:focus { border-color: var(--border-focus); box-shadow: 0 0 0 3px var(--accent-ring); }
.form-row textarea { resize: vertical; min-height: 110px; }
.form-status { margin-top: 0.6rem; font-size: 0.82rem; min-height: 1.2rem; }
.form-status.success { color: var(--green); }
.form-status.error   { color: #f87171; }

footer { padding: 2.5rem 6vw; background: var(--bg-surface); border-top: 1px solid var(--border); display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 1rem; }
.footer-logo { font-size: 0.88rem; font-weight: 600; color: var(--text-secondary); }
.footer-text { font-size: 0.78rem; color: var(--text-muted); }
.footer-links { display: flex; gap: 1.25rem; }
.footer-links a { font-size: 0.78rem; color: var(--text-muted); font-weight: 500; transition: color var(--t-fast); }
.footer-links a:hover { color: var(--text-primary); }

#terminal-popup { position: fixed; bottom: 5rem; left: 50%; transform: translateX(-50%) scale(0.95); z-index: 8000; width: 580px; max-width: 90vw; background: var(--bg-card); border: 1px solid var(--border-hover); border-radius: var(--radius-xl); box-shadow: var(--shadow-xl); font-family: 'Courier New', monospace; opacity: 0; pointer-events: none; transition: opacity 0.2s, transform 0.25s ease; }
#terminal-popup.open { opacity: 1; transform: translateX(-50%) scale(1); pointer-events: all; }
.terminal-header { display: flex; align-items: center; gap: 0.5rem; padding: 0.65rem 1rem; border-bottom: 1px solid var(--border); }
.terminal-dot { width: 9px; height: 9px; border-radius: 50%; }
.terminal-dot.r { background: #ff5f57; }
.terminal-dot.y { background: #ffbd2e; }
.terminal-dot.g { background: #28c840; }
.terminal-title { margin-left: 0.5rem; font-size: 0.72rem; color: var(--text-muted); }
.terminal-close { margin-left: auto; cursor: pointer; color: var(--text-muted); font-size: 0.9rem; }
.terminal-close:hover { color: var(--text-primary); }
.terminal-body { padding: 1rem; max-height: 260px; overflow-y: auto; }
.terminal-line { font-size: 0.8rem; line-height: 1.6; }
.terminal-line .prompt { color: var(--green); }
.terminal-line .cmd    { color: var(--text-primary); }
.terminal-line .out    { color: var(--text-secondary); }
.terminal-line .dim    { color: var(--text-muted); }
.terminal-line .hl     { color: var(--accent); }
.terminal-input-row { display: flex; align-items: center; padding: 0 1rem 1rem; gap: 0.5rem; }
.terminal-prompt-label { color: var(--green); font-size: 0.8rem; }
.terminal-input { flex: 1; background: none; border: none; outline: none; color: var(--text-primary); font-family: 'Courier New', monospace; font-size: 0.8rem; caret-color: var(--text-primary); }

#konami-overlay { position: fixed; inset: 0; z-index: 9500; display: flex; align-items: center; justify-content: center; flex-direction: column; gap: 1rem; background: rgba(0, 0, 0, 0.92); opacity: 0; pointer-events: none; transition: opacity 0.3s; text-align: center; }
#konami-overlay.open { opacity: 1; pointer-events: all; }
#konami-overlay h2 { font-size: 2rem; font-weight: 700; color: var(--text-primary); }
#konami-overlay p  { color: var(--text-secondary); font-size: 0.9rem; }

#sound-toggle { position: fixed; bottom: 1.5rem; right: 1.5rem; z-index: 800; width: 40px; height: 40px; background: var(--bg-card); border: 1px solid var(--border); border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 0.9rem; cursor: pointer; transition: border-color var(--t-fast); }
#sound-toggle:hover { border-color: var(--border-hover); }

#mobile-nav { position: fixed; inset: 0; z-index: 850; background: rgba(10, 10, 10, 0.98); backdrop-filter: blur(8px); display: flex; align-items: center; justify-content: center; flex-direction: column; gap: 1.75rem; opacity: 0; pointer-events: none; transition: opacity var(--t-smooth); }
#mobile-nav.open { opacity: 1; pointer-events: all; }
#mobile-nav a { font-size: 1.75rem; font-weight: 600; color: var(--text-secondary); transition: color var(--t-fast); }
#mobile-nav a:hover { color: var(--text-primary); }

@media (max-width: 1024px) {
  .hero-inner { grid-template-columns: 1fr; text-align: center; }
  .hero-right { justify-content: center; }
  .hero-description { max-width: 100%; }
  .hero-actions { justify-content: center; }
  .hero-badge { margin: 0 auto; }
  .about-grid { grid-template-columns: 1fr; gap: 3rem; }
  .projects-list { grid-template-columns: 1fr; max-width: 600px; }
  .project-visual { min-height: 180px; }
  .contact-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(3, 1fr); }
  .achievements-timeline::before { left: 100px; }
  .achievement-item { grid-template-columns: 100px 1fr; }
  .achievement-item::after { left: 94px; }
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-hamburger { display: flex; }
  section { padding: 4.5rem 5vw; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .github-profile-card { flex-direction: column; align-items: flex-start; }
  .github-stats-row { grid-template-columns: repeat(2, 1fr); width: 100%; margin-left: 0; }
  .achievements-timeline::before { display: none; }
  .achievement-item { grid-template-columns: 1fr; }
  .achievement-item::after { display: none; }
  .achievement-meta { text-align: left; padding-right: 0; }
  .achievement-content { padding-left: 0; padding-top: 0.2rem; }
  .exp-item { grid-template-columns: 1fr; gap: 1rem; padding: 1.75rem 1.5rem; }
  .exp-left { display: flex; align-items: center; gap: 1rem; flex-wrap: wrap; }
  .exp-period { margin-bottom: 0; }
  .education-card { flex-direction: column; text-align: center; padding: 2rem 1.5rem; gap: 1.25rem; }
  .edu-meta { justify-content: center; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; }
  .reveal, .reveal-left, .reveal-right { opacity: 1; transform: none; }
}