/* ============================================================
   esposito.pro - Portfolio Site Styles
   ============================================================ */

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

:root {
  --bg-primary:    #0f1117;
  --bg-card:       #151d2e;
  --bg-card-hover: #1a2744;
  --accent:        #5b9bd5;
  --accent-dark:   #2B5797;
  --text:          #e0e0e0;
  --text-muted:    #8a9ab5;
  --text-white:    #ffffff;
  --border:        #1e2d4a;
  --nav-h:         64px;
  --container:     1100px;
  --radius:        8px;
  --ease:          0.25s ease;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg-primary);
  color: var(--text);
  line-height: 1.6;
  font-size: 16px;
}

a { color: var(--accent); text-decoration: none; transition: color var(--ease); }
a:hover { color: var(--text-white); }
img { max-width: 100%; display: block; }

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

section { padding: 80px 0; border-bottom: 1px solid var(--border); }

.section-label {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 10px;
}

.section-title {
  font-size: 2rem;
  font-weight: 800;
  color: var(--text-white);
  margin-bottom: 48px;
  letter-spacing: -0.5px;
}

/* === NAV === */
nav {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--nav-h);
  background: rgba(15, 17, 23, 0.96);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nav-h);
}

.nav-brand {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-white);
  letter-spacing: -0.3px;
}
.nav-brand:hover { color: var(--accent); }

.nav-links {
  display: flex;
  gap: 32px;
  list-style: none;
}

.nav-links a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: color var(--ease);
}
.nav-links a:hover,
.nav-links a.active { color: var(--text-white); }

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 4px;
}
.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: var(--ease);
}

.mobile-menu {
  display: none;
  position: fixed;
  top: var(--nav-h);
  left: 0; right: 0;
  background: #0d1017;
  border-bottom: 1px solid var(--border);
  padding: 28px 24px;
  z-index: 99;
}
.mobile-menu.open { display: block; }
.mobile-menu ul { list-style: none; display: flex; flex-direction: column; gap: 22px; }
.mobile-menu a { font-size: 1.05rem; font-weight: 500; color: var(--text); }
.mobile-menu a:hover { color: var(--accent); }

/* === BUTTONS === */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent);
  color: #fff;
  font-size: 0.875rem;
  font-weight: 600;
  padding: 11px 22px;
  border-radius: var(--radius);
  transition: background var(--ease), transform var(--ease);
}
.btn-primary:hover { background: #4a8bc4; color: #fff; transform: translateY(-1px); }

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  color: var(--text);
  font-size: 0.875rem;
  font-weight: 600;
  padding: 11px 22px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  transition: border-color var(--ease), color var(--ease), transform var(--ease);
}
.btn-secondary:hover { border-color: var(--accent); color: var(--text-white); transform: translateY(-1px); }

/* === HERO === */
#hero {
  min-height: calc(100vh - var(--nav-h));
  display: flex;
  align-items: center;
  padding: 80px 0;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 64px;
  align-items: center;
}

.hero-tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--accent);
  border: 1px solid var(--accent-dark);
  border-radius: 100px;
  padding: 5px 14px;
  margin-bottom: 22px;
}

.hero-name {
  font-size: clamp(2.4rem, 5vw, 3.5rem);
  font-weight: 800;
  color: var(--text-white);
  line-height: 1.1;
  letter-spacing: -1.5px;
  margin-bottom: 18px;
}

.hero-tagline {
  font-size: 1.05rem;
  color: var(--text-muted);
  line-height: 1.75;
  max-width: 500px;
  margin-bottom: 36px;
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}

.hero-social {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  align-items: center;
}

.hero-social a {
  color: var(--text-muted);
  font-size: 0.82rem;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: color var(--ease);
}
.hero-social a:hover { color: var(--accent); }

.hero-image { display: flex; justify-content: center; }

.hero-image img {
  width: 280px;
  height: 280px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid var(--accent-dark);
  box-shadow: 0 0 60px rgba(91, 155, 213, 0.15);
}

/* === ABOUT === */
.about-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}

.about-text p {
  font-size: 0.975rem;
  color: var(--text-muted);
  line-height: 1.85;
  margin-bottom: 18px;
}
.about-text p:last-child { margin-bottom: 0; }

.metrics-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.metric-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  transition: border-color var(--ease);
}
.metric-card:hover { border-color: var(--accent); }

.metric-value {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 8px;
}

.metric-label {
  font-size: 0.78rem;
  color: var(--text-muted);
  font-weight: 500;
  line-height: 1.4;
}

/* === PROJECTS === */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px;
  display: flex;
  flex-direction: column;
  transition: border-color var(--ease), transform var(--ease);
}
.project-card:hover { border-color: var(--accent); transform: translateY(-2px); }

.project-icon { font-size: 1.75rem; margin-bottom: 14px; }

.project-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 10px;
  line-height: 1.35;
}

.project-desc {
  font-size: 0.845rem;
  color: var(--text-muted);
  line-height: 1.75;
  flex: 1;
  margin-bottom: 16px;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-bottom: 14px;
}

.tag {
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--accent);
  background: rgba(91, 155, 213, 0.08);
  border: 1px solid rgba(91, 155, 213, 0.2);
  border-radius: 4px;
  padding: 3px 8px;
}

.project-impact {
  font-size: 0.78rem;
  color: var(--text-muted);
  font-style: italic;
  margin-bottom: 14px;
}

.project-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--accent);
  margin-top: auto;
  transition: gap var(--ease), color var(--ease);
}
.project-link:hover { gap: 10px; color: var(--text-white); }

/* === EXPERIENCE === */
.experience-cols {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

.timeline { position: relative; padding-left: 28px; }

.timeline::before {
  content: '';
  position: absolute;
  left: 0; top: 8px; bottom: 8px;
  width: 2px;
  background: var(--border);
}

.timeline-item { position: relative; padding-bottom: 32px; }
.timeline-item:last-child { padding-bottom: 0; }

.timeline-dot {
  position: absolute;
  left: -34px;
  top: 6px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--accent);
  border: 2px solid var(--bg-primary);
  box-shadow: 0 0 0 2px var(--accent-dark);
}

.timeline-date {
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 3px;
}

.timeline-role {
  font-size: 0.925rem;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 2px;
}

.timeline-company {
  font-size: 0.845rem;
  color: var(--text-muted);
}

/* === NESTED COMPANY TIMELINE === */
.timeline-company-group {
  position: relative;
  padding-bottom: 36px;
}
.timeline-company-group:last-child { padding-bottom: 0; }

.timeline-company-header {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 14px;
}

.timeline-company-name {
  font-size: 1rem;
  font-weight: 800;
  color: var(--text-white);
}

.timeline-company-tenure {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 500;
}

.timeline-subroles {
  padding-left: 20px;
  border-left: 2px solid var(--border);
  margin-left: 4px;
}

.timeline-subrole {
  padding-bottom: 18px;
}
.timeline-subrole:last-child { padding-bottom: 0; }

.timeline-subrole-date {
  font-size: 0.71rem;
  font-weight: 700;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 3px;
}

.timeline-subrole-title {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text);
}

/* === EDUCATION (inside Experience) === */
.edu-block { margin-top: 72px; }

.education-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  margin-bottom: 24px;
}

.edu-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 22px;
  transition: border-color var(--ease);
}
.edu-card:hover { border-color: var(--accent); }

.edu-degree {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 4px;
  line-height: 1.35;
}

.edu-school {
  font-size: 0.8rem;
  color: var(--accent);
  margin-bottom: 2px;
}

.edu-year { font-size: 0.75rem; color: var(--text-muted); }

.certs-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.cert-badge {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-muted);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 100px;
  padding: 5px 14px;
}

/* === RESUME === */
#resume { text-align: center; }

.resume-cards {
  display: flex;
  gap: 24px;
  justify-content: center;
  flex-wrap: wrap;
}

.resume-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 36px;
  width: 270px;
  transition: border-color var(--ease), transform var(--ease);
}
.resume-card:hover { border-color: var(--accent); transform: translateY(-2px); }

.resume-icon { font-size: 2.2rem; margin-bottom: 14px; }
.resume-card-title { font-size: 1rem; font-weight: 700; color: var(--text-white); margin-bottom: 8px; }
.resume-card-desc { font-size: 0.8rem; color: var(--text-muted); margin-bottom: 24px; line-height: 1.55; }

/* === RECOMMENDATIONS === */
.rec-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.rec-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: border-color var(--ease);
}
.rec-card:hover { border-color: var(--accent); }

.rec-quote {
  font-size: 0.935rem;
  color: var(--text-muted);
  line-height: 1.8;
  font-style: italic;
  margin-bottom: 20px;
  padding-left: 18px;
  border-left: 3px solid var(--accent-dark);
}

.rec-author { font-size: 0.875rem; font-weight: 700; color: var(--text-white); }
.rec-role { font-size: 0.78rem; color: var(--text-muted); margin-top: 2px; }

/* === FOOTER === */
footer {
  padding: 56px 0 36px;
  border-top: none;
}

.footer-inner {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 48px;
  align-items: start;
  padding-bottom: 36px;
  margin-bottom: 28px;
  border-bottom: 1px solid var(--border);
}

.footer-brand { font-size: 1.1rem; font-weight: 700; color: var(--text-white); margin-bottom: 10px; }

.footer-tagline {
  font-size: 0.845rem;
  color: var(--text-muted);
  max-width: 420px;
  line-height: 1.65;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 11px;
  align-items: flex-end;
}

.footer-links a { font-size: 0.845rem; color: var(--text-muted); }
.footer-links a:hover { color: var(--accent); }

.footer-cta {
  text-align: center;
  padding: 32px 0;
  border-bottom: 1px solid var(--border);
  margin-bottom: 28px;
}

.footer-cta-btn {
  font-size: 1rem;
  padding: 14px 40px;
  color: #fff !important;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* === FADE-IN ANIMATION === */
.fade-in {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}
.fade-in.visible { opacity: 1; transform: translateY(0); }

/* === RESPONSIVE === */
@media (max-width: 900px) {
  .projects-grid { grid-template-columns: repeat(2, 1fr); }
  .experience-cols { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .hamburger { display: flex; }

  .hero-inner { grid-template-columns: 1fr; text-align: center; gap: 40px; }
  .hero-image { order: -1; }
  .hero-image img { width: 200px; height: 200px; }
  .hero-tagline { max-width: 100%; }
  .hero-actions { justify-content: center; }
  .hero-social { justify-content: center; }

  .about-inner { grid-template-columns: 1fr; gap: 40px; }
  .projects-grid { grid-template-columns: 1fr; }
  .education-grid { grid-template-columns: 1fr; }
  .rec-grid { grid-template-columns: 1fr; }
  .resume-cards { flex-direction: column; align-items: center; }
  .footer-inner { grid-template-columns: 1fr; }
  .footer-links { align-items: flex-start; }
  .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }

  section { padding: 60px 0; }
  .section-title { font-size: 1.65rem; margin-bottom: 36px; }
}

@media (max-width: 480px) {
  .metrics-grid { grid-template-columns: 1fr 1fr; }
  .hero-actions { flex-direction: column; align-items: center; }
}