/* ===== Sebastian Casaretto — Portfolio Site ===== */

:root {
  --bg: #0a0a0f;
  --bg-soft: #121218;
  --card: #16161f;
  --border: #262633;
  --text: #f2f2f7;
  --text-dim: #9a9aab;
  --accent: #3b82f6;
  --accent-2: #8b5cf6;
  --accent-warm: #f97316;
  --gradient: linear-gradient(135deg, var(--accent) 0%, var(--accent-2) 100%);
  --radius: 14px;
  --max-width: 1080px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

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

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

/* ===== Background glow ===== */
.glow {
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(600px circle at 15% 10%, rgba(59, 130, 246, 0.14), transparent 60%),
    radial-gradient(600px circle at 85% 30%, rgba(139, 92, 246, 0.12), transparent 60%);
  pointer-events: none;
}

/* ===== Header / Nav ===== */
header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 10, 15, 0.8);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

nav {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 18px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-weight: 800;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
}

.logo span {
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.nav-links {
  display: flex;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  padding: 8px 16px;
  border-radius: 999px;
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text-dim);
  transition: all 0.2s ease;
}

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

.nav-links a.active {
  color: var(--text);
  background: var(--card);
  border: 1px solid var(--border);
}

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text);
  padding: 8px 12px;
  cursor: pointer;
  font-size: 1.1rem;
}

/* Right-hand nav group (links + language toggle + hamburger) */
.nav-right {
  display: flex;
  align-items: center;
  gap: 14px;
}

/* ===== Language toggle ===== */
.lang-toggle {
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--border);
  border-radius: 999px;
  overflow: hidden;
  background: var(--card);
}

.lang-btn {
  background: none;
  border: none;
  color: var(--text-dim);
  font-family: inherit;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  padding: 6px 12px;
  cursor: pointer;
  transition: color 0.2s ease, background 0.2s ease;
}

.lang-btn:hover { color: var(--text); }

.lang-btn.active {
  background: var(--gradient);
  color: #fff;
}

/* ===== Hero ===== */
.hero {
  padding: 100px 0 70px;
  text-align: center;
}

.eyebrow {
  display: inline-block;
  padding: 6px 16px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--card);
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 0.02em;
  margin-bottom: 24px;
}

.hero h1 {
  font-size: clamp(2.4rem, 6vw, 4.2rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin: 0 0 16px;
}

.hero .gradient-text {
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero p.lead {
  font-size: clamp(1.05rem, 2vw, 1.3rem);
  color: var(--text-dim);
  max-width: 640px;
  margin: 0 auto 36px;
}

.btn-row {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 26px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  transition: all 0.2s ease;
  border: 1px solid transparent;
  cursor: pointer;
}

.btn-primary {
  background: var(--gradient);
  color: #fff;
}

.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 10px 30px rgba(139, 92, 246, 0.35); }

.btn-outline {
  border-color: var(--border);
  color: var(--text);
  background: var(--card);
}

.btn-outline:hover { border-color: var(--accent); color: var(--accent); }

/* ===== Sections ===== */
section { padding: 70px 0; }

.section-head {
  text-align: center;
  margin-bottom: 48px;
}

.section-head .tag {
  color: var(--accent);
  font-weight: 700;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.section-head h2 {
  font-size: clamp(1.7rem, 4vw, 2.4rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin: 8px 0 12px;
}

.section-head p {
  color: var(--text-dim);
  max-width: 560px;
  margin: 0 auto;
}

/* ===== Highlight strip ===== */
.highlights {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-top: 48px;
}

.highlight-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 18px;
  text-align: center;
}

.highlight-card .num {
  font-size: 1.6rem;
  font-weight: 800;
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.highlight-card .label {
  color: var(--text-dim);
  font-size: 0.85rem;
  margin-top: 6px;
}

/* ===== Cards / grids ===== */
.grid {
  display: grid;
  gap: 20px;
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
}

.card h3 {
  margin-top: 0;
  font-size: 1.15rem;
  font-weight: 700;
}

.card p { color: var(--text-dim); margin-bottom: 0; }

/* ===== Timeline (Experience) ===== */
.timeline {
  position: relative;
  padding-left: 28px;
  border-left: 2px solid var(--border);
}

.timeline-item {
  position: relative;
  padding-bottom: 48px;
}

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

.timeline-item::before {
  content: "";
  position: absolute;
  left: -35px;
  top: 4px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--gradient);
  box-shadow: 0 0 0 4px var(--bg);
}

.timeline-item .role {
  font-size: 1.2rem;
  font-weight: 700;
  margin: 0 0 2px;
}

.timeline-item .org {
  color: var(--accent);
  font-weight: 600;
  font-size: 0.98rem;
}

.timeline-item .meta {
  color: var(--text-dim);
  font-size: 0.85rem;
  margin-bottom: 14px;
}

.timeline-item ul {
  margin: 0;
  padding-left: 20px;
  color: var(--text-dim);
}

.timeline-item ul li { margin-bottom: 8px; }

.badge {
  display: inline-block;
  background: rgba(139, 92, 246, 0.14);
  color: var(--accent-2);
  border: 1px solid rgba(139, 92, 246, 0.3);
  border-radius: 999px;
  padding: 3px 12px;
  font-size: 0.75rem;
  font-weight: 700;
  margin-left: 10px;
  vertical-align: middle;
}

/* ===== Skills ===== */
.skill-group h3 {
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--accent);
  margin-bottom: 16px;
}

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

.pill {
  background: var(--card);
  border: 1px solid var(--border);
  padding: 9px 16px;
  border-radius: 999px;
  font-size: 0.88rem;
  font-weight: 500;
}

/* ===== Contact ===== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.contact-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px;
  display: flex;
  align-items: center;
  gap: 16px;
}

.contact-card .icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  flex-shrink: 0;
}

.contact-card .label {
  color: var(--text-dim);
  font-size: 0.8rem;
  margin-bottom: 2px;
}

.contact-card .value {
  font-weight: 600;
  word-break: break-word;
}

form.contact-form {
  display: grid;
  gap: 16px;
  margin-top: 40px;
}

form.contact-form label {
  font-size: 0.85rem;
  color: var(--text-dim);
  margin-bottom: 6px;
  display: block;
}

form.contact-form input,
form.contact-form textarea {
  width: 100%;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px 14px;
  color: var(--text);
  font-family: inherit;
  font-size: 0.95rem;
}

form.contact-form input:focus,
form.contact-form textarea:focus {
  outline: none;
  border-color: var(--accent);
}

/* ===== Footer ===== */
footer {
  border-top: 1px solid var(--border);
  padding: 36px 0;
  text-align: center;
  color: var(--text-dim);
  font-size: 0.85rem;
}

footer .social-row {
  display: flex;
  gap: 16px;
  justify-content: center;
  margin-bottom: 16px;
}

footer .social-row a {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
}

footer .social-row a:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* ===== Responsive ===== */
@media (max-width: 780px) {
  .nav-links {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg-soft);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    padding: 12px 24px 20px;
    display: none;
  }
  .nav-links.open { display: flex; }
  .nav-toggle { display: block; }
  .highlights { grid-template-columns: repeat(2, 1fr); }
  .service-brief { grid-template-columns: repeat(2, 1fr); }
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
}
/* ===== Services ===== */
.service-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 30px 28px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.service-card:hover {
  border-color: var(--accent);
  transform: translateY(-3px);
}

.service-icon {
  width: 46px;
  height: 46px;
  border-radius: 12px;
  background: var(--gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.15rem;
  font-weight: 800;
  color: #fff;
  flex-shrink: 0;
}

.service-card h3 {
  margin: 0;
  font-size: 1.15rem;
  font-weight: 700;
}

.service-card > p {
  color: var(--text-dim);
  margin: 0;
}

.service-card ul {
  margin: 0;
  padding-left: 18px;
  color: var(--text-dim);
  font-size: 0.9rem;
  display: grid;
  gap: 6px;
}

/* ===== Service brief (home preview row) ===== */
.service-brief {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 36px;
}

.service-brief-item {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px 14px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  text-align: center;
  font-size: 0.9rem;
  font-weight: 600;
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.service-brief-item:hover {
  border-color: var(--accent);
  transform: translateY(-3px);
}

.sb-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--gradient);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.sb-icon svg { width: 22px; height: 22px; }

/* ===== CTA band ===== */
.cta-band {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 48px 28px;
  text-align: center;
}

.cta-band h2 {
  margin-top: 0;
  font-size: 1.6rem;
}

.cta-band p {
  max-width: 560px;
  margin: 0 auto 24px;
  color: var(--text-dim);
}