/* ============================================================
   Jonas Alves — personal site
   "The Dashboard": dark, precise, data-dense.
   ============================================================ */

:root {
  --bg: #0a0f1a;
  --bg-raised: #0e1524;
  --bg-card: #111a2c;
  --border: #1d2a42;
  --text: #e8eef7;
  --text-dim: #8b99ad;
  --green: #2dd4a7;
  --green-dim: rgba(45, 212, 167, 0.12);
  --gray-signal: #5b6b82;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, monospace;
  --sans: "Inter", system-ui, -apple-system, sans-serif;
  --max: 1120px;
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

.mono { font-family: var(--mono); }
.ok { color: var(--green); }
a { color: var(--green); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ---------- Reveal on scroll ---------- */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible { opacity: 1; transform: none; }

/* ============================================================
   Nav
   ============================================================ */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 90;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 15px clamp(20px, 5vw, 48px);
  background: rgba(10, 15, 26, 0.82);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.nav-logo { font-size: 15px; font-weight: 700; color: var(--text); }
.nav-logo:hover { text-decoration: none; color: var(--green); }
.nav-tick { color: var(--green); font-size: 11px; }
.nav-links { display: flex; gap: clamp(14px, 2.5vw, 26px); align-items: center; }
.nav-links a { color: var(--text-dim); font-size: 14px; font-weight: 500; }
.nav-links a:hover { color: var(--text); text-decoration: none; }
.nav-cta {
  border: 1px solid var(--green);
  color: var(--green) !important;
  padding: 7px 16px;
  border-radius: 99px;
  transition: background 0.2s;
}
.nav-cta:hover { background: var(--green-dim); }

/* ============================================================
   Hero
   ============================================================ */
.hero {
  padding: clamp(120px, 16vh, 170px) clamp(20px, 5vw, 48px) 0;
  max-width: var(--max);
  margin: 0 auto;
}
.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
  gap: clamp(32px, 5vw, 64px);
  align-items: center;
}
@media (max-width: 920px) {
  .hero-inner { grid-template-columns: 1fr; }
}

.hero-kicker {
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--text-dim);
  margin-bottom: 22px;
}
.hero-title {
  font-size: clamp(2.3rem, 5.2vw, 3.9rem);
  font-weight: 800;
  line-height: 1.07;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
}
.hero-title .accent { color: var(--green); }
.hero-sub {
  color: var(--text-dim);
  font-size: clamp(1rem, 1.6vw, 1.12rem);
  margin-bottom: 32px;
  max-width: 560px;
}
.hero-sub strong { color: var(--text); }

.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.btn {
  display: inline-block;
  padding: 13px 26px;
  border-radius: 99px;
  font-weight: 600;
  font-size: 15px;
  transition: transform 0.15s, background 0.2s, border-color 0.2s;
}
.btn:hover { text-decoration: none; transform: translateY(-2px); }
.btn-primary { background: var(--green); color: var(--bg); }
.btn-ghost { border: 1px solid var(--border); color: var(--text); }
.btn-ghost:hover { border-color: var(--green); }

/* ---------- Hero chart ---------- */
.hero-chart {
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 20px 18px 12px;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.35);
}
.chart-title {
  font-size: 11.5px;
  color: var(--text-dim);
  letter-spacing: 0.04em;
  margin-bottom: 10px;
}
.hero-chart svg { width: 100%; height: auto; display: block; }

.grid line { stroke: var(--border); stroke-width: 1; }
.axis text { fill: var(--text-dim); font-size: 11px; font-family: var(--mono); }

.area {
  fill: var(--green);
  opacity: 0;
  transition: opacity 1.2s ease 1s;
}
.hero-chart.drawn .area { opacity: 0.07; }

.line {
  fill: none;
  stroke: var(--green);
  stroke-width: 2.5;
  stroke-linecap: round;
  stroke-dasharray: 900;
  stroke-dashoffset: 900;
}
.hero-chart.drawn .line { animation: draw 2.2s ease-out forwards; }
@keyframes draw { to { stroke-dashoffset: 0; } }

.milestone { opacity: 0; }
.hero-chart.drawn .milestone { animation: fade-in 0.5s ease forwards; animation-delay: var(--d, 0.5s); }
.milestone:nth-of-type(1) { --d: 0.4s; }
.milestone:nth-of-type(2) { --d: 0.9s; }
.milestone:nth-of-type(3) { --d: 1.4s; }
.milestone:nth-of-type(4) { --d: 1.9s; }
@keyframes fade-in { to { opacity: 1; } }

.milestone circle { fill: var(--bg); stroke: var(--green); stroke-width: 2.5; }
.milestone-stem { stroke: var(--border); stroke-width: 1; stroke-dasharray: 3 3; }
.milestone-label { fill: var(--text); font-size: 11.5px; font-weight: 700; }
.milestone-sub { fill: var(--text-dim); font-size: 10.5px; }

@media (max-width: 560px) {
  .milestone-label { font-size: 14px; }
  .milestone-sub { font-size: 13px; }
  .axis text { font-size: 13px; }
}

/* ---------- KPI strip ---------- */
.kpis {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 16px;
  margin-top: clamp(48px, 7vh, 72px);
}
.kpi {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 22px 24px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.kpi-label { font-size: 11px; color: var(--text-dim); letter-spacing: 0.05em; }
.kpi-value { font-size: clamp(1.9rem, 3.4vw, 2.5rem); font-weight: 700; color: var(--text); }
.kpi-trend { font-size: 11.5px; }
.kpi-trend.up { color: var(--green); }

/* ============================================================
   Sections
   ============================================================ */
.section {
  max-width: var(--max);
  margin: 0 auto;
  padding: clamp(70px, 10vw, 120px) clamp(20px, 5vw, 48px) 0;
}
.section:last-of-type { padding-bottom: clamp(70px, 10vw, 120px); }

.section-title {
  font-size: clamp(1.6rem, 3.2vw, 2.3rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 18px;
  display: flex;
  align-items: baseline;
  gap: 16px;
}
.section-num { font-size: 0.55em; color: var(--green); font-weight: 500; }
.section-intro {
  color: var(--text-dim);
  max-width: 620px;
  font-size: 1.08rem;
  margin-bottom: 42px;
}

/* ---------- Experiment log ---------- */
.log { display: flex; flex-direction: column; gap: 18px; }
.log-entry {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 26px 30px;
  transition: border-color 0.25s;
}
.log-entry:hover { border-color: var(--green); }
.log-head {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 14px;
}
.log-id { font-size: 12px; color: var(--green); font-weight: 700; letter-spacing: 0.05em; }
.log-period { font-size: 12px; color: var(--text-dim); }
.badge {
  margin-left: auto;
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 0.08em;
  padding: 4px 10px;
  border-radius: 6px;
}
.badge.significant { color: var(--green); background: var(--green-dim); }
.badge.running { color: var(--text-dim); background: rgba(139, 153, 173, 0.12); animation: blink 2.4s ease-in-out infinite; }
@keyframes blink { 0%, 100% { opacity: 1; } 50% { opacity: 0.55; } }

.log-entry h3 { font-size: 1.2rem; letter-spacing: -0.01em; margin-bottom: 12px; }
.log-entry p { color: var(--text-dim); font-size: 15.5px; }
.log-entry p + p { margin-top: 10px; }
.log-entry .label { color: var(--green); font-size: 12px; letter-spacing: 0.04em; }
.log-entry strong { color: var(--text); }

@media (max-width: 640px) {
  .badge { margin-left: 0; }
}

/* ---------- Guardrail cards ---------- */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 18px;
}
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 24px 26px;
  transition: border-color 0.25s, transform 0.25s;
}
.card:hover { border-color: var(--green); transform: translateY(-4px); }
.card-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  margin-bottom: 14px;
}
.card-num { color: var(--green); font-size: 12px; letter-spacing: 0.1em; font-weight: 700; }
.card h3 { font-size: 1.06rem; margin-bottom: 8px; letter-spacing: -0.01em; }
.card p { color: var(--text-dim); font-size: 14.5px; }

.spark { width: 96px; height: 28px; flex-shrink: 0; }
.spark path {
  fill: none;
  stroke: var(--green);
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-dasharray: 160;
  stroke-dashoffset: 160;
  opacity: 0.85;
}
.card.visible .spark path { animation: draw-spark 1.3s ease-out 0.3s forwards; }
@keyframes draw-spark { to { stroke-dashoffset: 0; } }

/* ---------- Speaking ---------- */
.speaking-list { display: flex; flex-direction: column; gap: 16px; }
.speaking-item {
  display: flex;
  gap: 24px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 26px 30px;
  align-items: flex-start;
  transition: border-color 0.25s;
}
.speaking-item:hover { border-color: var(--green); }
.speaking-type {
  flex-shrink: 0;
  font-size: 10.5px;
  letter-spacing: 0.12em;
  color: var(--green);
  background: var(--green-dim);
  padding: 5px 10px;
  border-radius: 6px;
  margin-top: 3px;
  font-weight: 700;
}
.speaking-item h3 { font-size: 1.08rem; margin-bottom: 8px; letter-spacing: -0.01em; }
.speaking-item p { color: var(--text-dim); font-size: 14.5px; }
@media (max-width: 560px) {
  .speaking-item { flex-direction: column; gap: 12px; }
}

/* ---------- Focus block ---------- */
.focus-block {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-left: 3px solid var(--green);
  border-radius: 16px;
  padding: 30px 34px;
  max-width: 760px;
}
.focus-block p { color: var(--text-dim); font-size: 1.05rem; }
.focus-block p + p { margin-top: 16px; }
.focus-block em { color: var(--text); font-style: italic; }
.inline-code {
  color: var(--green);
  background: var(--green-dim);
  padding: 2px 8px;
  border-radius: 6px;
  font-size: 0.88em;
  white-space: nowrap;
}

/* ---------- Contact ---------- */
.contact-links { display: flex; gap: 16px; flex-wrap: wrap; }
.contact-link {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 18px 26px;
  color: var(--text);
  font-size: 15px;
  transition: border-color 0.25s, transform 0.2s;
}
.contact-link:hover {
  border-color: var(--green);
  transform: translateY(-3px);
  text-decoration: none;
}
.contact-arrow { color: var(--green); }

/* ============================================================
   Footer
   ============================================================ */
.footer {
  border-top: 1px solid var(--border);
  margin-top: clamp(70px, 10vw, 120px);
  padding: 30px clamp(20px, 5vw, 48px);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  color: var(--text-dim);
  font-size: 12px;
}
.footer-note { color: var(--gray-signal); }

/* ============================================================
   Reduced motion & small screens
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .line { stroke-dashoffset: 0 !important; animation: none !important; }
  .hero-chart .area { opacity: 0.07; transition: none; }
  .milestone { opacity: 1 !important; animation: none !important; }
  .spark path { stroke-dashoffset: 0 !important; animation: none !important; }
  .badge.running { animation: none; }
}

@media (max-width: 760px) {
  .nav-links a:not(.nav-cta) { display: none; }
}