/* ─── Reset & Base ───────────────────────────────── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --bg:        #293040;
  --bg-dark:   #1e2535;
  --bg-mid:    #242c3d;
  --green:     #00D646;
  --white:     #FFFFFF;
  --muted:     #b8c4d4;
  --gray:      #5a6a80;

  --font-display:   'Bebas Neue', sans-serif;
  --font-body:      'Barlow', sans-serif;
  --font-condensed: 'Barlow Condensed', sans-serif;
}

html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--bg);
  color: var(--white);
  font-family: var(--font-body);
  font-weight: 300;
  line-height: 1.7;
}

.container {
  max-width: 860px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* ─── Header / Nav ───────────────────────────────── */
#site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(28, 34, 48, 0.92);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

nav {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 2rem;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.hero-logo {
  display: block;
  height: 120px;
  width: auto;
  margin: 0 auto 1.5rem;
}

.nav-links {
  list-style: none;
  display: flex;
  gap: 2.5rem;
}

.nav-links a {
  color: var(--muted);
  text-decoration: none;
  font-family: var(--font-condensed);
  font-weight: 400;
  font-size: 0.85rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  transition: color 0.2s;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--green);
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--white);
  font-size: 1.5rem;
  cursor: pointer;
}

/* ─── Hero ───────────────────────────────────────── */
.hero {
  min-height: 100vh;
  background-image: url('../assets/hero-bg.jpg');
  background-size: cover;
  background-position: center top;
  background-repeat: no-repeat;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 6rem 2rem 4rem;
  position: relative;
  overflow: hidden;
}

/* dark overlay */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(20, 20, 20, 0.65);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
}

.hero-name {
  line-height: 0.85;
  margin-bottom: 1.25rem;
}

.hero-first {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(5rem, 18vw, 14rem);
  color: var(--white);
  letter-spacing: 0.05em;
}

.hero-last {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(3.5rem, 13vw, 10rem);
  color: var(--green);
  letter-spacing: 0.08em;
}

.hero-title {
  font-family: var(--font-condensed);
  font-weight: 300;
  font-size: clamp(0.85rem, 2.2vw, 1.1rem);
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 2.5rem;
}

/* ─── Button ─────────────────────────────────────── */
.btn {
  display: inline-block;
  padding: 0.75rem 2.25rem;
  border: 2px solid var(--green);
  color: var(--green);
  font-family: var(--font-condensed);
  font-weight: 600;
  font-size: 1rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  text-decoration: none;
  transition: background 0.2s, color 0.2s;
}

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

/* ─── About ──────────────────────────────────────── */
.about {
  background-color: var(--bg);
  padding: 5rem 0;
}

.about .container p {
  color: var(--muted);
  font-size: 1rem;
  max-width: 720px;
  margin: 0 auto 1.5rem;
}

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

.about em {
  color: var(--white);
  font-style: normal;
}

/* ─── Section title ──────────────────────────────── */
.section-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3rem);
  letter-spacing: 0.08em;
  color: var(--white);
  margin-bottom: 3rem;
}

.section-title::after {
  content: '';
  display: block;
  width: 3rem;
  height: 3px;
  background: var(--green);
  margin-top: 0.5rem;
}

/* ─── Case Studies ───────────────────────────────── */
.case-studies {
  background-color: var(--bg);
  padding: 5rem 0;
}

.case-study-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.5rem;
}

.case-study-card {
  display: block;
  text-decoration: none;
  background: var(--bg-dark);
  border: 1px solid rgba(255,255,255,0.07);
  transition: border-color 0.2s, transform 0.2s;
}

.case-study-card:hover {
  border-color: var(--green);
  transform: translateY(-3px);
}

.case-study-card-inner {
  padding: 2.25rem 2rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.case-study-tag {
  font-family: var(--font-condensed);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--green);
}

.case-study-name {
  font-family: var(--font-display);
  font-size: 2rem;
  letter-spacing: 0.06em;
  color: var(--white);
}

.case-study-excerpt {
  font-size: 0.9rem;
  color: var(--muted);
  line-height: 1.65;
  flex: 1;
}

.case-study-cta {
  font-family: var(--font-condensed);
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  color: var(--green);
  margin-top: 0.5rem;
}

/* ─── Experience / Timeline ──────────────────────── */
.experience {
  background-image: url('../assets/experience-bg.jpg');
  background-size: cover;
  background-position: center top;
  background-attachment: fixed;
  position: relative;
  padding: 5rem 0;
}

.experience::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(30, 37, 53, 0.82);
  pointer-events: none;
}

.experience .container {
  position: relative;
  z-index: 1;
}

.timeline {
  display: flex;
  flex-direction: column;
  gap: 3rem;
}

.timeline-item {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 2rem;
  padding-bottom: 3rem;
  border-bottom: 1px solid rgba(255,255,255,0.07);
}

.timeline-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.timeline-meta {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.timeline-years {
  font-family: var(--font-condensed);
  font-size: 0.78rem;
  letter-spacing: 0.15em;
  color: var(--green);
  text-transform: uppercase;
}

.timeline-company {
  font-family: var(--font-condensed);
  font-weight: 600;
  font-size: 1rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--white);
  line-height: 1.2;
}

.timeline-role {
  font-family: var(--font-body);
  font-weight: 300;
  font-size: 0.85rem;
  color: var(--muted);
}

.timeline-body p {
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.75;
}

/* ─── Contact ────────────────────────────────────── */
.contact {
  background-color: var(--bg-dark);
  padding: 5rem 0;
  text-align: center;
}

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

.contact-email {
  display: inline-block;
  font-family: var(--font-condensed);
  font-size: 1.35rem;
  letter-spacing: 0.08em;
  color: var(--green);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s;
}

.contact-email:hover {
  border-color: var(--green);
}

.social-links {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  margin-top: 1.75rem;
}

.social-links a {
  color: var(--white);
  opacity: 0.7;
  transition: opacity 0.2s, color 0.2s;
}

.social-links a:hover {
  opacity: 1;
  color: var(--green);
}

/* ─── Footer ─────────────────────────────────────── */
footer {
  background-color: var(--bg-dark);
  border-top: 1px solid rgba(255,255,255,0.06);
  text-align: center;
  padding: 1.5rem 2rem;
  font-family: var(--font-condensed);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  color: var(--gray);
}

/* ─── Mobile ─────────────────────────────────────── */
@media (max-width: 680px) {
  .hero {
    background-image: url('../assets/hero-bg-mobile.jpg');
    background-position: left top;
  }

  .hero-logo {
    display: none;
  }

  .hero-content {
    margin-top: 200px;
  }

  .nav-toggle {
    display: block;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--bg-dark);
    flex-direction: column;
    gap: 0;
    border-bottom: 1px solid rgba(255,255,255,0.08);
  }

  .nav-links.open {
    display: flex;
  }

  .nav-links li a {
    display: block;
    padding: 1rem 2rem;
    border-top: 1px solid rgba(255,255,255,0.05);
  }

  .timeline-item {
    grid-template-columns: 1fr;
    gap: 0.75rem;
  }

  .timeline-meta {
    padding-bottom: 0.25rem;
  }
}