/* =====================
   RESET & BASE
===================== */
* { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --bg: #0d3b66;
  --bg-dark: #0a2c4d;
  --grid: rgba(255,255,255,0.07);
  --text: #ffffff;
  --text-dim: #b8d4f0;
  --accent: #ffd60a;
  --accent2: #90e0ef;
  --border: rgba(255,255,255,0.15);
}

html { scroll-behavior: smooth; }

body {
  font-family: 'JetBrains Mono', 'Courier New', monospace;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
}

/* =====================
   GRID BACKGROUND (BLUEPRINT)
===================== */
.grid-bg {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px),
    linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 100px 100px, 100px 100px, 20px 20px, 20px 20px;
}

/* =====================
   LOADER
===================== */
.loader {
  position: fixed;
  inset: 0;
  background: var(--bg-dark);
  z-index: 9999;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  transition: opacity 0.6s ease, visibility 0.6s ease;
}

.loader.hide {
  opacity: 0;
  visibility: hidden;
}

.loader-scan {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  animation: scan 1.2s ease-in-out infinite;
}

@keyframes scan {
  0% { top: 0; }
  50% { top: 100%; }
  100% { top: 0; }
}

.loader-text {
  text-align: left;
  font-size: 14px;
  color: var(--accent2);
  line-height: 2;
}

.loader-text b { color: var(--accent); }
.loader-text .ok { color: #4ade80; }

/* =====================
   NAVBAR
===================== */
nav {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 6%;
  background: rgba(10, 44, 77, 0.9);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.logo {
  font-size: 18px;
  font-weight: bold;
  letter-spacing: 1px;
}

.logo .bracket { color: var(--accent2); }
.logo .at { color: var(--accent); }

nav ul {
  display: flex;
  list-style: none;
  gap: 30px;
}

nav ul a {
  color: var(--text-dim);
  text-decoration: none;
  font-size: 14px;
  letter-spacing: 1px;
  padding: 6px 12px;
  border: 1px solid transparent;
  transition: 0.3s;
}

nav ul a:hover,
nav ul a.active {
  color: var(--accent);
  border-color: var(--accent);
}

/* =====================
   HERO
===================== */
.hero {
  position: relative;
  min-height: 85vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 80px 6%;
  z-index: 1;
}

.hero-content {
  max-width: 800px;
  text-align: center;
  animation: fadeUp 0.8s ease 0.3s both;
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

.tag {
  color: var(--accent2);
  font-size: 13px;
  letter-spacing: 3px;
  margin-bottom: 20px;
}

.hero h1 {
  font-size: clamp(2.5rem, 7vw, 5rem);
  line-height: 1.1;
  margin-bottom: 20px;
  font-weight: 800;
}

.hero h1 span {
  color: var(--accent);
  position: relative;
}

.subtitle {
  font-size: 1.3rem;
  color: var(--accent2);
  margin-bottom: 20px;
  letter-spacing: 2px;
}

.desc {
  color: var(--text-dim);
  max-width: 550px;
  margin: 0 auto 40px;
  font-size: 0.95rem;
}

.buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  padding: 14px 28px;
  border: 1px solid var(--accent2);
  color: var(--accent2);
  text-decoration: none;
  font-size: 14px;
  letter-spacing: 1px;
  transition: 0.3s;
  position: relative;
}

.btn:hover {
  background: var(--accent2);
  color: var(--bg-dark);
}

.btn.primary {
  background: var(--accent);
  color: var(--bg-dark);
  border-color: var(--accent);
}

.btn.primary:hover {
  background: transparent;
  color: var(--accent);
}

/* Coordinates */
.coord {
  position: absolute;
  font-size: 12px;
  color: var(--accent2);
  letter-spacing: 2px;
  opacity: 0.7;
}

.coord.top-left { top: 30px; left: 6%; }
.coord.top-right { top: 30px; right: 6%; }
.coord.bottom-left { bottom: 30px; left: 6%; }
.coord.bottom-right { bottom: 30px; right: 6%; }

/* =====================
   PAGE HEADER (untuk halaman selain home)
===================== */
.page-header {
  position: relative;
  padding: 120px 6% 60px;
  text-align: center;
  z-index: 1;
}

.page-header h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
}

.page-header h1 span { color: var(--accent); }

.page-header .tag {
  margin-bottom: 16px;
}

/* =====================
   SECTIONS
===================== */
.preview,
.content {
  position: relative;
  padding: 60px 6% 100px;
  z-index: 1;
  max-width: 1200px;
  margin: 0 auto;
}

.preview h2,
.content h2 {
  font-size: 1.5rem;
  color: var(--accent2);
  margin-bottom: 30px;
  letter-spacing: 1px;
}

.preview-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}

.prev-card {
  padding: 30px;
  border: 1px solid var(--border);
  background: rgba(10, 44, 77, 0.5);
  transition: 0.3s;
  position: relative;
}

.prev-card:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
}

.prev-card .num {
  color: var(--accent);
  font-size: 13px;
  letter-spacing: 2px;
  margin-bottom: 12px;
}

.prev-card h3 {
  font-size: 1.15rem;
  margin-bottom: 8px;
}

.prev-card p {
  color: var(--text-dim);
  font-size: 0.9rem;
}

/* =====================
   ABOUT PAGE
===================== */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 50px;
  align-items: start;
}

.avatar-box {
  border: 1px solid var(--border);
  padding: 30px;
  text-align: center;
  background: rgba(10, 44, 77, 0.5);
}

.avatar-initial {
  width: 160px;
  height: 160px;
  margin: 0 auto 20px;
  border: 2px dashed var(--accent2);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  color: var(--accent);
  font-weight: bold;
}

.avatar-label {
  font-size: 12px;
  color: var(--text-dim);
  letter-spacing: 2px;
}

.about-text h2 {
  margin-top: 30px;
  margin-bottom: 16px;
}

.about-text h2:first-child { margin-top: 0; }

.about-text p {
  color: var(--text-dim);
  margin-bottom: 16px;
}

.about-text b { color: var(--accent); }

.timeline {
  list-style: none;
  border-left: 1px solid var(--border);
  padding-left: 20px;
}

.timeline li {
  padding: 10px 0;
  color: var(--text-dim);
  position: relative;
}

.timeline li::before {
  content: '◆';
  position: absolute;
  left: -26px;
  color: var(--accent);
  font-size: 10px;
}

.timeline .year {
  color: var(--accent2);
  display: block;
  font-size: 13px;
}

.skills { margin-top: 10px; }

.skill {
  margin-bottom: 16px;
}

.skill span {
  font-size: 14px;
  color: var(--accent2);
  display: block;
  margin-bottom: 6px;
}

.bar {
  height: 8px;
  background: rgba(255,255,255,0.1);
  border: 1px solid var(--border);
  position: relative;
  overflow: hidden;
}

.bar > div {
  height: 100%;
  background: linear-gradient(90deg, var(--accent2), var(--accent));
  animation: barFill 1.2s ease;
}

@keyframes barFill {
  from { width: 0; }
}

/* =====================
   PROJECT PAGE
===================== */
.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}

.project-card {
  padding: 30px;
  border: 1px solid var(--border);
  background: rgba(10, 44, 77, 0.5);
  transition: 0.3s;
  cursor: pointer;
}

.project-card:hover {
  border-color: var(--accent);
  transform: translateY(-5px);
  box-shadow: 0 10px 30px rgba(0,0,0,0.3);
}

.project-card.placeholder {
  opacity: 0.6;
  border-style: dashed;
}

.project-num {
  font-size: 12px;
  color: var(--accent);
  letter-spacing: 2px;
  margin-bottom: 12px;
}

.project-card h3 {
  font-size: 1.2rem;
  margin-bottom: 10px;
}

.project-card p {
  color: var(--text-dim);
  font-size: 0.9rem;
  margin-bottom: 16px;
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tags span {
  font-size: 11px;
  padding: 4px 10px;
  border: 1px solid var(--accent2);
  color: var(--accent2);
  letter-spacing: 1px;
}

/* =====================
   CONTACT PAGE
===================== */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
  margin-bottom: 40px;
}

.contact-card {
  padding: 40px 24px;
  border: 1px solid var(--border);
  background: rgba(10, 44, 77, 0.5);
  text-align: center;
  text-decoration: none;
  color: var(--text);
  transition: 0.3s;
}

.contact-card:hover {
  border-color: var(--accent);
  transform: translateY(-5px);
}

.contact-icon {
  font-size: 2.5rem;
  color: var(--accent);
  margin-bottom: 16px;
}

.contact-card h3 {
  font-size: 1.05rem;
  margin-bottom: 8px;
  color: var(--accent2);
}

.contact-card p {
  font-size: 0.9rem;
  color: var(--text-dim);
}

.note {
  text-align: center;
  padding: 20px;
  border: 1px dashed var(--border);
  color: var(--text-dim);
  font-size: 13px;
}

.note code {
  background: rgba(255,255,255,0.1);
  padding: 2px 6px;
  color: var(--accent);
}

/* =====================
   FOOTER
===================== */
footer {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 30px 20px;
  border-top: 1px solid var(--border);
  color: var(--text-dim);
  font-size: 13px;
}

footer .heart { color: var(--accent); }

/* =====================
   RESPONSIVE
===================== */
@media (max-width: 768px) {
  nav { padding: 16px 4%; }
  nav ul { gap: 12px; }
  nav ul a { font-size: 12px; padding: 4px 8px; }
  .logo { font-size: 14px; }

  .hero { padding: 60px 5%; }
  .coord { font-size: 10px; }

  .about-grid { grid-template-columns: 1fr; gap: 30px; }
  .avatar-initial { width: 120px; height: 120px; font-size: 2.5rem; }

  .preview, .content { padding: 40px 5% 80px; }
  .page-header { padding: 80px 5% 40px; }
}