/* ============================================
   Modern Minimalist Portfolio — Vindy B. Prasetyo
   ============================================ */

/* --- CSS Variables --- */
:root {
  --bg: #0a0a0a;
  --bg-elevated: #111111;
  --bg-card: #141414;
  --border: rgba(255,255,255,0.06);
  --border-hover: rgba(255,255,255,0.15);
  --text: #f0f0f0;
  --text-secondary: rgba(240,240,240,0.5);
  --text-muted: rgba(240,240,240,0.3);
  --accent: #6366f1;
  --accent-soft: rgba(99,102,241,0.15);
  --accent-glow: rgba(99,102,241,0.25);
  --success: #4ade80;
  --font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --mono: 'JetBrains Mono', monospace;
  --nav-h: 64px;
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 20px;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --shadow: 0 1px 0 rgba(255,255,255,0.04), 0 4px 24px rgba(0,0,0,0.4);
}

[data-theme="light"] {
  --bg: #fafafa;
  --bg-elevated: #ffffff;
  --bg-card: #ffffff;
  --border: rgba(0,0,0,0.06);
  --border-hover: rgba(0,0,0,0.15);
  --text: #0a0a0a;
  --text-secondary: rgba(10,10,10,0.55);
  --text-muted: rgba(10,10,10,0.35);
  --accent-soft: rgba(99,102,241,0.1);
  --accent-glow: rgba(99,102,241,0.2);
  --shadow: 0 1px 0 rgba(0,0,0,0.04), 0 4px 24px rgba(0,0,0,0.06);
}

/* --- Reset --- */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
  transition: background 0.4s var(--ease), color 0.4s var(--ease);
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; }

/* --- Custom Cursor (desktop only) --- */
@media (pointer: fine) {
  .cursor {
    position: fixed; top: 0; left: 0; width: 8px; height: 8px;
    background: var(--accent); border-radius: 50%;
    pointer-events: none; z-index: 9999;
    transform: translate(-50%, -50%);
    transition: width 0.15s, height 0.15s, opacity 0.15s;
  }
  .cursor-follower {
    position: fixed; top: 0; left: 0; width: 32px; height: 32px;
    border: 1px solid rgba(99,102,241,0.4); border-radius: 50%;
    pointer-events: none; z-index: 9998;
    transform: translate(-50%, -50%);
    transition: transform 0.12s var(--ease), opacity 0.3s;
  }
  body:not(:hover) .cursor, body:not(:hover) .cursor-follower { opacity: 0; }
}
@media (pointer: coarse) {
  .cursor, .cursor-follower { display: none; }
}

/* --- Container --- */
.container {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

/* --- Navigation --- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  height: var(--nav-h);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s, background 0.3s, backdrop-filter 0.3s;
}
.nav.scrolled {
  background: rgba(10,10,10,0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom-color: var(--border);
}
[data-theme="light"] .nav.scrolled {
  background: rgba(250,250,250,0.85);
}
.nav-container {
  display: flex; align-items: center; justify-content: space-between;
  height: var(--nav-h);
}
.nav-logo { display: flex; align-items: center; }
.logo-text {
  font-size: 1.1rem; font-weight: 700; letter-spacing: -0.02em;
  color: var(--text);
}
.logo-dot { color: var(--accent); }
.nav-menu {
  display: flex; gap: 8px;
}
.nav-link {
  font-size: 0.875rem; font-weight: 500;
  color: var(--text-secondary);
  padding: 6px 12px; border-radius: 6px;
  transition: color 0.2s, background 0.2s;
}
.nav-link:hover, .nav-link.active {
  color: var(--text);
  background: var(--accent-soft);
}
.nav-link.active { color: var(--accent); }
.nav-actions { display: flex; align-items: center; gap: 8px; }
.theme-toggle {
  width: 36px; height: 36px;
  display: flex; align-items: center; justify-content: center;
  color: var(--text-secondary); border-radius: 8px;
  border: 1px solid var(--border);
  transition: color 0.2s, border-color 0.2s, background 0.2s;
  font-size: 0.875rem;
}
.theme-toggle:hover { color: var(--text); border-color: var(--border-hover); background: var(--bg-elevated); }
.nav-toggle {
  display: none; flex-direction: column; gap: 5px;
  width: 36px; height: 36px; align-items: center; justify-content: center;
  border-radius: 8px; border: 1px solid var(--border);
}
.nav-toggle span {
  width: 18px; height: 1.5px; background: var(--text);
  border-radius: 2px; transition: transform 0.3s var(--ease), opacity 0.3s;
  display: block;
}
.nav-toggle.active span:first-child { transform: rotate(45deg) translate(4.5px, 4.5px); }
.nav-toggle.active span:last-child { transform: rotate(-45deg) translate(4.5px, -4.5px); }

/* --- Sections --- */
.section {
  padding: 120px 0;
}
.section-label {
  font-family: var(--mono);
  font-size: 0.75rem; font-weight: 500;
  color: var(--accent); letter-spacing: 0.1em; text-transform: uppercase;
  margin-bottom: 16px;
}
.section-title {
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  font-weight: 700; letter-spacing: -0.03em; line-height: 1.15;
  color: var(--text); margin-bottom: 24px;
}
.section-sub {
  font-size: 1rem; color: var(--text-secondary);
  margin-bottom: 60px; max-width: 500px;
}
.mt-section { margin-top: 80px; }

/* --- Hero --- */
.hero {
  min-height: 100vh;
  display: flex; flex-direction: column;
  justify-content: center; align-items: flex-start;
  position: relative; overflow: hidden;
  padding-top: var(--nav-h);
}
.hero-bg-grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(99,102,241,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(99,102,241,0.025) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, #000 30%, transparent 100%);
  pointer-events: none;
}
.hero-container {
  padding-top: 60px; padding-bottom: 80px;
  display: flex; flex-direction: column; gap: 32px;
}
.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--mono); font-size: 0.8rem;
  color: var(--text-secondary);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  padding: 6px 14px; border-radius: 100px;
}
.status-dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--success);
  box-shadow: 0 0 0 2px rgba(74,222,128,0.2);
  animation: pulse 2.5s infinite;
}
@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 2px rgba(74,222,128,0.2); }
  50% { box-shadow: 0 0 0 5px rgba(74,222,128,0); }
}
.hero-title {
  font-size: clamp(3rem, 9vw, 6.5rem);
  font-weight: 800; letter-spacing: -0.045em; line-height: 0.95;
  color: var(--text);
}
.text-accent { color: var(--accent); }
.hero-role {
  font-family: var(--mono); font-size: clamp(0.95rem, 2vw, 1.1rem);
  color: var(--text-secondary); margin-top: -8px;
}
.hero-bio {
  font-size: clamp(0.95rem, 2vw, 1.1rem);
  color: var(--text-secondary); max-width: 480px; line-height: 1.7;
}
.hero-br { display: inline; }
.hero-cta {
  display: flex; gap: 12px; flex-wrap: wrap; align-items: center;
}
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 0.9rem; font-weight: 500;
  padding: 11px 22px; border-radius: var(--radius-sm);
  transition: all 0.2s var(--ease);
  font-family: var(--font);
}
.btn-primary {
  background: var(--accent);
  color: #fff;
}
.btn-primary:hover {
  background: #4f46e5;
  transform: translateY(-1px);
  box-shadow: 0 8px 24px var(--accent-glow);
}
.btn-ghost {
  color: var(--text-secondary);
  border: 1px solid var(--border);
  background: transparent;
}
.btn-ghost:hover {
  color: var(--text); border-color: var(--border-hover);
  background: var(--bg-elevated);
}
.btn-block { width: 100%; justify-content: center; }
.hero-stats {
  display: flex; align-items: center; gap: 32px;
  padding-top: 8px;
}
.stat-item { display: flex; flex-direction: column; gap: 2px; }
.stat-number {
  font-size: 1.5rem; font-weight: 700;
  letter-spacing: -0.03em; color: var(--text);
}
.stat-label {
  font-size: 0.75rem; color: var(--text-muted);
  font-family: var(--mono);
}
.stat-divider {
  width: 1px; height: 32px; background: var(--border);
}
.hero-scroll {
  position: absolute; bottom: 32px; left: 50%;
  transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 12px;
  color: var(--text-muted);
  font-family: var(--mono); font-size: 0.7rem; letter-spacing: 0.1em; text-transform: uppercase;
}
.scroll-line {
  width: 1px; height: 40px; background: var(--border);
  position: relative; overflow: hidden;
}
.scroll-line::after {
  content: '';
  position: absolute; top: -100%;
  width: 1px; height: 100%;
  background: linear-gradient(to bottom, transparent, var(--accent));
  animation: scrollLine 1.8s infinite;
}
@keyframes scrollLine {
  0% { top: -100%; } 100% { top: 100%; }
}

/* --- About --- */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px; align-items: start;
}
.about-text p {
  color: var(--text-secondary); margin-bottom: 16px; font-size: 1rem; line-height: 1.75;
}
.about-text p strong { color: var(--text); }
.about-meta {
  margin-top: 28px; display: flex; flex-direction: column; gap: 12px;
}
.meta-row {
  display: flex; align-items: flex-start; gap: 12px;
  font-size: 0.875rem; color: var(--text-secondary);
}
.meta-row i {
  color: var(--accent); margin-top: 2px; flex-shrink: 0; width: 14px;
}
.about-links {
  margin-top: 28px; display: flex; flex-direction: column; gap: 10px;
}
.about-link {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 0.875rem; color: var(--text-secondary);
  transition: color 0.2s;
}
.about-link i { color: var(--accent); width: 14px; flex-shrink: 0; }
.about-link:hover { color: var(--text); }
.skills-panel {
  display: flex; flex-direction: column; gap: 28px;
  padding: 32px;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--bg-card);
}
.skill-group-title {
  font-family: var(--mono);
  font-size: 0.7rem; font-weight: 500;
  color: var(--text-muted); letter-spacing: 0.08em; text-transform: uppercase;
  margin-bottom: 12px;
}
.skill-chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  font-size: 0.8rem; font-weight: 500;
  padding: 4px 12px; border-radius: 100px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  transition: border-color 0.2s, color 0.2s;
}
.chip:hover { border-color: var(--border-hover); color: var(--text); }
.chip-accent {
  background: var(--accent-soft); border-color: rgba(99,102,241,0.3);
  color: var(--accent);
}

/* --- Experience / Timeline --- */
.timeline { display: flex; flex-direction: column; gap: 0; }
.timeline-item {
  display: grid; grid-template-columns: 32px 1fr;
  gap: 0 24px;
}
.timeline-marker {
  display: flex; flex-direction: column; align-items: center;
}
.timeline-dot {
  width: 12px; height: 12px; border-radius: 50%;
  background: var(--border); border: 2px solid var(--bg);
  box-shadow: 0 0 0 1px var(--border);
  flex-shrink: 0; margin-top: 6px;
  z-index: 1; position: relative;
}
.timeline-dot.active {
  background: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}
.timeline-line {
  width: 1px; flex: 1;
  background: var(--border); min-height: 24px;
  margin: 6px 0;
}
.timeline-item:last-child .timeline-line { display: none; }
.timeline-body {
  padding-bottom: 48px;
}
.timeline-header {
  display: flex; justify-content: space-between; align-items: flex-start;
  margin-bottom: 4px;
}
.timeline-header h3 {
  font-size: 1rem; font-weight: 600; color: var(--text);
}
.timeline-header h4 {
  font-size: 0.875rem; font-weight: 400; color: var(--accent);
}
.timeline-badge {
  font-family: var(--mono); font-size: 0.7rem;
  background: var(--accent-soft); color: var(--accent);
  border: 1px solid rgba(99,102,241,0.3);
  padding: 2px 10px; border-radius: 100px; white-space: nowrap;
}
.timeline-date {
  font-family: var(--mono); font-size: 0.75rem;
  color: var(--text-muted); display: block; margin-bottom: 12px;
}
.timeline-body > p {
  font-size: 0.9rem; color: var(--text-secondary); margin-bottom: 12px;
}
.timeline-points {
  display: flex; flex-direction: column; gap: 6px;
  margin-bottom: 16px; padding-left: 2px;
}
.timeline-points li {
  font-size: 0.875rem; color: var(--text-secondary);
  padding-left: 16px; position: relative;
}
.timeline-points li::before {
  content: '—'; position: absolute; left: 0;
  color: var(--accent); font-size: 0.75rem;
}
.timeline-tags {
  display: flex; flex-wrap: wrap; gap: 6px;
}
.timeline-tags span {
  font-family: var(--mono); font-size: 0.7rem;
  color: var(--text-muted);
  border: 1px solid var(--border);
  padding: 2px 10px; border-radius: 4px;
}

/* --- Education --- */
.education-row {
  display: grid; grid-template-columns: 1fr 1fr; gap: 20px;
}
.edu-card {
  display: flex; gap: 20px; align-items: flex-start;
  padding: 24px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-card);
  transition: border-color 0.2s;
}
.edu-card:hover { border-color: var(--border-hover); }
.edu-icon {
  width: 44px; height: 44px; flex-shrink: 0;
  background: var(--accent-soft);
  border-radius: 10px; display: flex; align-items: center; justify-content: center;
  color: var(--accent); font-size: 1.1rem;
}
.edu-info h3 { font-size: 0.95rem; font-weight: 600; color: var(--text); margin-bottom: 4px; }
.edu-info h4 { font-size: 0.825rem; color: var(--accent); margin-bottom: 10px; }
.edu-meta {
  display: flex; flex-wrap: wrap; gap: 12px;
  font-family: var(--mono); font-size: 0.75rem; color: var(--text-muted);
  align-items: center;
}
.edu-meta i { margin-right: 4px; }
.gpa-badge {
  background: var(--accent-soft); color: var(--accent);
  padding: 2px 10px; border-radius: 100px;
  border: 1px solid rgba(99,102,241,0.3);
}

/* --- Portfolio Grid --- */
.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.portfolio-card {
  padding: 24px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-card);
  transition: border-color 0.25s var(--ease), transform 0.25s var(--ease), box-shadow 0.25s var(--ease);
  display: flex; flex-direction: column; gap: 12px;
}
.portfolio-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-3px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.3);
}
[data-theme="light"] .portfolio-card:hover { box-shadow: 0 12px 40px rgba(0,0,0,0.08); }
.card-header {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 4px;
}
.card-icon {
  width: 44px; height: 44px; border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 1.1rem; flex-shrink: 0;
}
.card-links { display: flex; gap: 8px; }
.card-links a {
  width: 32px; height: 32px;
  display: flex; align-items: center; justify-content: center;
  color: var(--text-muted); border-radius: 6px;
  border: 1px solid var(--border);
  font-size: 0.85rem;
  transition: color 0.2s, border-color 0.2s;
}
.card-links a:hover { color: var(--text); border-color: var(--border-hover); }
.card-private {
  font-family: var(--mono); font-size: 0.7rem;
  color: var(--text-muted); display: flex; align-items: center; gap: 4px;
}
.portfolio-card h3 { font-size: 0.975rem; font-weight: 600; color: var(--text); }
.portfolio-card p { font-size: 0.855rem; color: var(--text-secondary); line-height: 1.6; flex: 1; }
.card-tags {
  display: flex; flex-wrap: wrap; gap: 6px; margin-top: 4px;
}
.card-tags span {
  font-family: var(--mono); font-size: 0.7rem;
  color: var(--text-muted); border: 1px solid var(--border);
  padding: 2px 8px; border-radius: 4px;
}

/* --- Contact --- */
.contact-grid {
  display: grid; grid-template-columns: 1fr 1.5fr; gap: 48px;
}
.contact-info {
  display: flex; flex-direction: column; gap: 8px;
}
.contact-item {
  display: flex; align-items: center; gap: 16px;
  padding: 16px 20px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-card);
  transition: border-color 0.2s, background 0.2s;
}
.contact-item:not(.no-link):hover { border-color: var(--border-hover); background: var(--bg-elevated); }
.contact-item-icon {
  width: 40px; height: 40px; flex-shrink: 0;
  background: var(--accent-soft); border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  color: var(--accent); font-size: 0.9rem;
}
.contact-item-label {
  display: block; font-family: var(--mono);
  font-size: 0.7rem; color: var(--text-muted); margin-bottom: 2px;
}
.contact-item-value {
  display: block; font-size: 0.875rem; color: var(--text);
}
.contact-form {
  display: flex; flex-direction: column; gap: 16px;
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group label {
  font-family: var(--mono); font-size: 0.75rem;
  color: var(--text-muted); letter-spacing: 0.05em;
}
.form-group input, .form-group textarea {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  font-size: 0.9rem; font-family: var(--font);
  color: var(--text);
  outline: none; resize: vertical;
  transition: border-color 0.2s;
}
.form-group input::placeholder, .form-group textarea::placeholder {
  color: var(--text-muted);
}
.form-group input:focus, .form-group textarea:focus {
  border-color: var(--accent);
}
.form-success {
  display: none; text-align: center;
  color: var(--success); font-size: 0.875rem;
  padding: 12px; border-radius: var(--radius-sm);
  background: rgba(74,222,128,0.08); border: 1px solid rgba(74,222,128,0.2);
}
.form-success.show { display: block; }

/* --- Footer --- */
.footer {
  border-top: 1px solid var(--border);
  padding: 60px 0 40px;
}
.footer-container {
  display: flex; flex-direction: column; align-items: center; gap: 16px; text-align: center;
}
.footer-name { font-size: 1rem; font-weight: 600; color: var(--text); }
.footer-role {
  font-family: var(--mono); font-size: 0.8rem; color: var(--text-muted);
}
.footer-social {
  display: flex; gap: 12px; margin: 8px 0;
}
.footer-social a {
  width: 38px; height: 38px;
  display: flex; align-items: center; justify-content: center;
  border: 1px solid var(--border); border-radius: 8px;
  color: var(--text-muted); font-size: 0.9rem;
  transition: color 0.2s, border-color 0.2s;
}
.footer-social a:hover { color: var(--accent); border-color: rgba(99,102,241,0.4); }
.footer-copy { font-size: 0.8rem; color: var(--text-muted); }

/* --- Scroll Animations --- */
[data-aos] {
  opacity: 0; transform: translateY(20px);
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
}
[data-aos].aos-animate {
  opacity: 1; transform: translateY(0);
}

/* --- Responsive --- */
@media (max-width: 1024px) {
  .portfolio-grid { grid-template-columns: repeat(2, 1fr); }
  .about-grid { grid-template-columns: 1fr; gap: 40px; }
}

@media (max-width: 768px) {
  .section { padding: 80px 0; }
  .nav-menu {
    position: fixed; top: var(--nav-h); left: 0; right: 0;
    background: var(--bg); border-bottom: 1px solid var(--border);
    flex-direction: column; gap: 0; padding: 12px;
    display: none;
  }
  .nav-menu.active { display: flex; }
  .nav-link { padding: 12px 16px; border-radius: 8px; }
  .nav-toggle { display: flex; }
  .hero-title { font-size: clamp(2.5rem, 11vw, 4.5rem); }
  .hero-bio br.hero-br { display: none; }
  .portfolio-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .education-row { grid-template-columns: 1fr; }
  .hero-stats { gap: 20px; }
  .timeline-item { grid-template-columns: 20px 1fr; gap: 0 16px; }
}

@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .hero-cta { flex-direction: column; }
  .btn { width: 100%; justify-content: center; }
}