/* =============================================
   INDAH ALAM — Portfolio Stylesheet
   ============================================= */

:root {
  --clr-bg: #0d1117;
  --clr-surface: #161b22;
  --clr-surface-2: #1c2333;
  --clr-border: #30363d;
  --clr-accent: #f0a500;
  --clr-accent-dim: rgba(240, 165, 0, 0.12);
  --clr-text: #e6edf3;
  --clr-text-muted: #8b949e;
  --clr-text-dim: #6e7681;
  --font-sans: 'Inter', system-ui, sans-serif;
  --font-serif: 'Playfair Display', Georgia, serif;
  --radius: 10px;
  --shadow: 0 4px 24px rgba(0,0,0,0.4);
  --transition: 0.25s ease;
  --max-w: 1100px;
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--clr-bg);
  color: var(--clr-text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }

ul { list-style: none; }

img { max-width: 100%; display: block; }

/* =============================================
   NAVIGATION
   ============================================= */

.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(13, 17, 23, 0.85);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--clr-border);
  transition: var(--transition);
}

.nav.scrolled {
  background: rgba(13, 17, 23, 0.97);
}

.nav-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 2rem;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--clr-accent);
  letter-spacing: 0.05em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-links a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--clr-text-muted);
  transition: color var(--transition);
}

.nav-links a:hover { color: var(--clr-text); }

.btn-nav {
  background: var(--clr-accent) !important;
  color: #0d1117 !important;
  padding: 0.4rem 1.1rem;
  border-radius: 6px;
  font-weight: 600 !important;
  transition: opacity var(--transition) !important;
}

.btn-nav:hover { opacity: 0.85; }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--clr-text-muted);
  border-radius: 2px;
  transition: var(--transition);
}

/* =============================================
   BUTTONS
   ============================================= */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.7rem 1.6rem;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  border: 2px solid transparent;
}

.btn-primary {
  background: var(--clr-accent);
  color: #0d1117;
}

.btn-primary:hover {
  background: #d4920a;
  transform: translateY(-1px);
}

.btn-ghost {
  background: transparent;
  color: var(--clr-text);
  border-color: var(--clr-border);
}

.btn-ghost:hover {
  border-color: var(--clr-accent);
  color: var(--clr-accent);
  transform: translateY(-1px);
}

/* =============================================
   HERO
   ============================================= */

.hero {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 8rem 2rem 4rem;
  gap: 4rem;
}

.hero-eyebrow {
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--clr-accent);
  margin-bottom: 1rem;
}

.hero-name {
  font-family: var(--font-serif);
  font-size: clamp(2.8rem, 6vw, 5rem);
  line-height: 1.1;
  margin-bottom: 1.25rem;
  background: linear-gradient(135deg, #e6edf3 0%, #8b949e 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-tagline {
  font-size: 1.05rem;
  color: var(--clr-text-muted);
  max-width: 480px;
  margin-bottom: 2rem;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 2rem;
}

.hero-badges {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
}

.badge {
  font-size: 0.75rem;
  font-weight: 500;
  padding: 0.3rem 0.8rem;
  border-radius: 20px;
  background: var(--clr-surface-2);
  border: 1px solid var(--clr-border);
  color: var(--clr-text-muted);
}

/* Avatar card (hero graphic) */
.hero-graphic {
  display: flex;
  justify-content: center;
  align-items: center;
}

.avatar-card {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  min-width: 260px;
}

.avatar-circle {
  width: 90px;
  height: 90px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--clr-accent), #d4920a);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 700;
  color: #0d1117;
  border: 3px solid rgba(240, 165, 0, 0.3);
}

.avatar-info {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.2rem;
  text-align: center;
}

.avatar-info strong {
  font-size: 1rem;
  font-weight: 600;
  color: var(--clr-text);
}

.avatar-info span {
  font-size: 0.8rem;
  color: var(--clr-text-muted);
}

.avatar-company {
  color: var(--clr-accent) !important;
  font-weight: 500 !important;
}

.avatar-stats {
  display: flex;
  gap: 1.5rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--clr-border);
  width: 100%;
  justify-content: center;
}

.av-stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.2rem;
}

.av-num {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--clr-accent);
}

.av-lbl {
  font-size: 0.7rem;
  color: var(--clr-text-dim);
}

/* =============================================
   SECTIONS — SHARED
   ============================================= */

.section {
  padding: 6rem 0;
}

.section-alt {
  background: var(--clr-surface);
  border-top: 1px solid var(--clr-border);
  border-bottom: 1px solid var(--clr-border);
}

.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 2rem;
}

.section-header {
  margin-bottom: 3.5rem;
}

.section-label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--clr-accent);
  margin-bottom: 0.75rem;
}

.section-header h2 {
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  font-weight: 700;
  color: var(--clr-text);
  line-height: 1.25;
}

/* =============================================
   ABOUT
   ============================================= */

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
}

.about-text p {
  color: var(--clr-text-muted);
  margin-bottom: 1.25rem;
}

.about-text p:last-child { margin-bottom: 0; }

.about-text strong { color: var(--clr-text); }

.expertise-list {
  margin-top: 1.5rem;
}

.expertise-list h4 {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--clr-accent);
  margin-bottom: 0.75rem;
}

.expertise-list ul {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.4rem 1.5rem;
}

.expertise-list li {
  font-size: 0.85rem;
  color: var(--clr-text-muted);
  padding-left: 0.9rem;
  position: relative;
}

.expertise-list li::before {
  content: '▸';
  position: absolute;
  left: 0;
  color: var(--clr-accent);
  font-size: 0.65rem;
  top: 3px;
}

.stats-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.stat-card {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  transition: border-color var(--transition);
}

.stat-card:hover {
  border-color: var(--clr-accent);
}

.stat-number {
  font-family: var(--font-serif);
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--clr-accent);
  line-height: 1;
}

.stat-label {
  font-size: 0.8rem;
  color: var(--clr-text-muted);
}

/* =============================================
   TIMELINE / EXPERIENCE
   ============================================= */

.timeline {
  position: relative;
  padding-left: 2rem;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 6px;
  bottom: 6px;
  width: 2px;
  background: linear-gradient(to bottom, var(--clr-accent), transparent);
}

.timeline-item {
  position: relative;
  margin-bottom: 3.5rem;
}

.timeline-item:last-child { margin-bottom: 0; }

.timeline-marker {
  position: absolute;
  left: -2.45rem;
  top: 6px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--clr-accent);
  border: 2px solid var(--clr-bg);
  box-shadow: 0 0 0 2px var(--clr-accent);
}

.timeline-content {
  background: var(--clr-bg);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  padding: 1.75rem;
  transition: border-color var(--transition);
}

.timeline-content:hover {
  border-color: var(--clr-accent);
}

.timeline-meta {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 0.5rem;
  flex-wrap: wrap;
}

.timeline-date {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--clr-accent);
  letter-spacing: 0.05em;
}

.timeline-company {
  font-size: 0.8rem;
  color: var(--clr-text-dim);
}

.timeline-marker--current {
  background: var(--clr-accent);
  box-shadow: 0 0 0 4px rgba(240, 165, 0, 0.25);
  width: 14px;
  height: 14px;
  left: -2.6rem;
}

.timeline-content h3 {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
  color: var(--clr-text);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.current-badge {
  font-size: 0.65rem;
  font-weight: 600;
  padding: 0.2rem 0.55rem;
  border-radius: 20px;
  background: rgba(240, 165, 0, 0.15);
  color: var(--clr-accent);
  border: 1px solid rgba(240, 165, 0, 0.3);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.timeline-content > p {
  color: var(--clr-text-muted);
  font-size: 0.9rem;
  margin-bottom: 1rem;
}

.timeline-highlights {
  list-style: disc;
  padding-left: 1.25rem;
  margin-bottom: 1rem;
}

.timeline-highlights li {
  font-size: 0.875rem;
  color: var(--clr-text-muted);
  margin-bottom: 0.35rem;
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tag {
  font-size: 0.72rem;
  font-weight: 500;
  padding: 0.25rem 0.65rem;
  border-radius: 4px;
  background: var(--clr-accent-dim);
  color: var(--clr-accent);
  border: 1px solid rgba(240, 165, 0, 0.2);
}

/* =============================================
   SKILLS
   ============================================= */

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
}

.skill-group {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  padding: 1.75rem;
  transition: border-color var(--transition);
}

.skill-group:hover {
  border-color: var(--clr-accent);
}

.skill-group h3 {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--clr-accent);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--clr-border);
}

.skill-group ul {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.skill-group li {
  font-size: 0.875rem;
  color: var(--clr-text-muted);
  padding-left: 1rem;
  position: relative;
}

.skill-group li::before {
  content: '▸';
  position: absolute;
  left: 0;
  color: var(--clr-accent);
  font-size: 0.7rem;
  top: 3px;
}

/* =============================================
   PROJECTS GRID
   ============================================= */

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.25rem;
}

.project-card {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  transition: border-color var(--transition), transform var(--transition);
}

.project-card:hover {
  border-color: var(--clr-accent);
  transform: translateY(-2px);
}

.project-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
}

.project-sector {
  font-size: 0.7rem;
  font-weight: 600;
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.sector-nickel   { background: rgba(100, 180, 120, 0.15); color: #6cb880; border: 1px solid rgba(100, 180, 120, 0.25); }
.sector-gold     { background: rgba(240, 165, 0, 0.15);   color: var(--clr-accent); border: 1px solid rgba(240, 165, 0, 0.25); }
.sector-gas      { background: rgba(80, 160, 220, 0.15);  color: #5ab0dc; border: 1px solid rgba(80, 160, 220, 0.25); }
.sector-coal     { background: rgba(160, 140, 110, 0.15); color: #a08c6e; border: 1px solid rgba(160, 140, 110, 0.25); }
.sector-infra    { background: rgba(180, 100, 220, 0.15); color: #c07ae0; border: 1px solid rgba(180, 100, 220, 0.25); }
.sector-industrial { background: rgba(220, 100, 100, 0.15); color: #e07070; border: 1px solid rgba(220, 100, 100, 0.25); }
.sector-building { background: rgba(60, 180, 180, 0.15); color: #3cb8b8; border: 1px solid rgba(60, 180, 180, 0.25); }

.project-date {
  font-size: 0.75rem;
  color: var(--clr-text-dim);
}

.project-card h3 {
  font-size: 0.975rem;
  font-weight: 600;
  color: var(--clr-text);
  line-height: 1.3;
}

.project-sub {
  font-size: 0.775rem;
  color: var(--clr-accent);
  margin-bottom: 0.25rem;
}

.project-card p:not(.project-sub) {
  font-size: 0.825rem;
  color: var(--clr-text-muted);
  line-height: 1.6;
}

/* =============================================
   EDUCATION
   ============================================= */

.edu-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.edu-card {
  background: var(--clr-bg);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  padding: 1.75rem;
  display: flex;
  gap: 1.25rem;
  align-items: flex-start;
  transition: border-color var(--transition);
}

.edu-card:hover { border-color: var(--clr-accent); }

.edu-icon {
  font-size: 1.75rem;
  flex-shrink: 0;
}

.edu-body h3 {
  font-size: 0.975rem;
  font-weight: 600;
  margin-bottom: 0.3rem;
}

.edu-inst {
  font-size: 0.825rem;
  color: var(--clr-accent);
  margin-bottom: 0.25rem;
}

.edu-detail {
  font-size: 0.8rem;
  color: var(--clr-text-dim);
}

/* =============================================
   CONTACT
   ============================================= */

.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
}

.contact-text p {
  color: var(--clr-text-muted);
  margin-bottom: 1.5rem;
}

.contact-text strong { color: var(--clr-text); }

.contact-links {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.contact-link {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.9rem;
  color: var(--clr-text-muted);
  transition: color var(--transition);
}

.contact-link:not(.contact-location):hover {
  color: var(--clr-accent);
}

.contact-location { cursor: default; }

.contact-cta {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  padding: 2rem;
}

.fifo-note {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--clr-accent);
  letter-spacing: 0.05em;
  margin-bottom: 1.25rem !important;
}

.fifo-note::before {
  content: '✓';
  font-size: 0.75rem;
}

.btn-cv {
  margin-top: 0.75rem;
  width: 100%;
  justify-content: center;
}

.role-note {
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--clr-text-dim);
  letter-spacing: 0.03em;
  font-family: var(--font-sans);
  border: 1px solid var(--clr-border);
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
}

.contact-cta > p {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--clr-accent);
  margin-bottom: 1rem;
}

.contact-cta .btn {
  display: flex;
  justify-content: center;
  width: 100%;
  text-align: center;
}

.contact-cta ul {
  margin-bottom: 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.contact-cta li {
  font-size: 0.875rem;
  color: var(--clr-text-muted);
  padding-left: 1rem;
  position: relative;
}

.contact-cta li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--clr-accent);
  font-size: 0.75rem;
}

/* =============================================
   FOOTER
   ============================================= */

.footer {
  background: var(--clr-surface);
  border-top: 1px solid var(--clr-border);
  padding: 2rem 0;
  text-align: center;
}

.footer p {
  font-size: 0.8rem;
  color: var(--clr-text-dim);
}

/* =============================================
   RESPONSIVE
   ============================================= */

@media (max-width: 900px) {
  .hero {
    grid-template-columns: 1fr;
    padding-top: 6rem;
    text-align: center;
  }

  .hero-tagline { margin-left: auto; margin-right: auto; }
  .hero-actions { justify-content: center; }
  .hero-badges { justify-content: center; }

  .hero-graphic { display: none; }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .contact-layout {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

@media (max-width: 640px) {
  .nav-links { display: none; }
  .nav-links.open { display: flex; flex-direction: column; position: absolute; top: 64px; left: 0; right: 0; background: var(--clr-bg); border-bottom: 1px solid var(--clr-border); padding: 1.5rem 2rem; gap: 1.25rem; }
  .nav-toggle { display: flex; }

  .section { padding: 4rem 0; }
  .stats-grid { grid-template-columns: 1fr 1fr; }

  .timeline { padding-left: 1.5rem; }
  .timeline-marker { left: -1.95rem; }
}