/* === DESIGN SYSTEM — Curso Negócio.IA === */

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

:root {
  --bg: #0a0d0b;
  --bg-card: #111815;
  --bg-elev: #161e1a;
  --border: #1f2a24;
  --border-strong: #2a3a32;
  --fg: #e8efe9;
  --fg-muted: #8a9690;
  --primary: #22c55e;
  --primary-glow: rgba(34, 197, 94, 0.5);
  --green-500: #16a34a;
  --orange: #fb923c;
  --red: #f87171;
}

html, body {
  width: 100%;
  height: 100vh;
  background: var(--bg);
  color: var(--fg);
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
}

.deck {
  width: 100vw;
  height: 100vh;
  position: relative;
  overflow: hidden;
}

/* Background ambient: radial-gradient (custo zero GPU) — substituiu filter:blur que fazia jank */
.deck {
  background:
    radial-gradient(ellipse 50% 40% at 10% 10%, rgba(34, 197, 94, 0.07), transparent 60%),
    radial-gradient(ellipse 50% 40% at 90% 90%, rgba(22, 163, 74, 0.09), transparent 60%);
}

.slide {
  width: 100%;
  height: 100%;
  position: absolute;
  inset: 0;
  padding: 7vh 6vw;
  display: grid;
  place-items: center;
  opacity: 0;
  transform: translateX(40px);
  transition: opacity .35s ease, transform .35s ease;
  pointer-events: none;
  z-index: 1;
}
.slide.active { opacity: 1; transform: translateX(0); pointer-events: auto; }

.slide-inner {
  width: min(82%, 1200px);
  transform: translate(-4vw, -4vh);
  text-align: center;
}

/* TYPOGRAPHY */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.45rem 1rem;
  border: 1px solid rgba(34, 197, 94, 0.3);
  background: rgba(34, 197, 94, 0.08);
  border-radius: 999px;
  color: var(--primary);
  font-size: clamp(0.65rem, 0.8vw, 0.85rem);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 1.75rem;
}
.eyebrow .dot {
  width: 8px; height: 8px;
  background: var(--primary);
  border-radius: 50%;
  box-shadow: 0 0 12px var(--primary-glow);
  animation: pulse 2s infinite;
}
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.5; } }

h1 {
  font-size: clamp(2.5rem, 5vw, 5.25rem);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -0.025em;
  margin-bottom: 1.5rem;
}
h2 {
  font-size: clamp(1.75rem, 3vw, 3rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 1.5rem;
  letter-spacing: -0.015em;
}
p {
  font-size: clamp(1rem, 1.4vw, 1.4rem);
  line-height: 1.6;
  color: var(--fg-muted);
}

.gradient-text {
  background: linear-gradient(135deg, var(--primary), var(--green-500));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.strong-fg { color: var(--fg); font-weight: 700; }

/* CAPA layout */
.layout-cover .label {
  font-family: "SF Mono", Monaco, Consolas, monospace;
  font-size: clamp(0.85rem, 1vw, 1.1rem);
  color: var(--fg-muted);
  margin-bottom: 1rem;
  letter-spacing: 0.05em;
}
.layout-cover .meta {
  display: flex;
  gap: 1.5rem;
  margin-top: 2.25rem;
  font-family: "SF Mono", Monaco, Consolas, monospace;
  font-size: clamp(0.8rem, 1vw, 1.05rem);
  color: var(--fg-muted);
  flex-wrap: wrap;
  justify-content: center;
}
.layout-cover .meta span { display: inline-flex; align-items: center; gap: 0.4rem; }
.layout-cover .meta strong { color: var(--primary); font-weight: 600; }

/* PILLS (cards 2-up) */
.pills {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem 1.5rem;
  margin-top: 0.5rem;
  text-align: left;
}
.pills.three { grid-template-columns: repeat(3, 1fr); }
.pill {
  display: flex;
  align-items: flex-start;
  gap: 0.85rem;
  padding: 1.15rem 1.35rem;
  border: 1px solid var(--border);
  background: var(--bg-card);
  border-radius: 14px;
}
.pill .icon {
  width: 32px; height: 32px;
  background: rgba(34, 197, 94, 0.15);
  border: 1px solid rgba(34, 197, 94, 0.4);
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  color: var(--primary);
  font-weight: 700;
  font-size: 0.9rem;
}
.pill .content h4 {
  font-size: clamp(0.95rem, 1.1vw, 1.2rem);
  font-weight: 700;
  margin-bottom: 0.25rem;
  color: var(--fg);
}
.pill .content p {
  font-size: clamp(0.85rem, 0.95vw, 1rem);
  line-height: 1.45;
  color: var(--fg-muted);
}

/* INSIGHT BOX (era seeding — agora label neutro) */
.insight-box {
  margin-top: 1.75rem;
  padding: 1.4rem 1.65rem;
  border: 1px solid rgba(251, 146, 60, 0.3);
  background: linear-gradient(135deg, rgba(251, 146, 60, 0.08), rgba(20, 25, 22, 0.8));
  border-radius: 14px;
  text-align: left;
}
.insight-box .label-tag {
  color: var(--orange);
  font-size: clamp(0.7rem, 0.85vw, 0.85rem);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.5rem;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}
.insight-box p {
  font-size: clamp(1rem, 1.25vw, 1.3rem);
  color: var(--fg);
}

/* RECAP LIST (numerada) */
.recap-list {
  list-style: none;
  margin-top: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.95rem;
  text-align: left;
  counter-reset: step;
}
.recap-list li {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  font-size: clamp(1rem, 1.2vw, 1.25rem);
  color: var(--fg);
}
.recap-list li::before {
  content: counter(step);
  counter-increment: step;
  flex-shrink: 0;
  width: 30px; height: 30px;
  background: rgba(34, 197, 94, 0.15);
  border: 1px solid rgba(34, 197, 94, 0.4);
  border-radius: 50%;
  color: var(--primary);
  font-weight: 700;
  font-size: 0.9rem;
  display: flex; align-items: center; justify-content: center;
  margin-top: 0.1rem;
}

/* BRIDGE CTA */
.bridge-cta {
  margin-top: 2rem;
  padding: 1.5rem 1.75rem;
  border: 2px solid rgba(34, 197, 94, 0.4);
  background: linear-gradient(135deg, rgba(34, 197, 94, 0.10), rgba(20, 25, 22, 0.6));
  border-radius: 16px;
  display: flex;
  align-items: center;
  gap: 1.25rem;
  text-align: left;
}
.bridge-cta .arrow {
  font-size: clamp(2rem, 3vw, 3rem);
  color: var(--primary);
  flex-shrink: 0;
}
.bridge-cta .text strong {
  color: var(--fg);
  font-size: clamp(1.05rem, 1.3vw, 1.4rem);
  font-weight: 800;
}
.bridge-cta .text p {
  color: var(--fg-muted);
  margin-top: 0.25rem;
  font-size: clamp(0.9rem, 1vw, 1.05rem);
}
.bridge-cta a {
  margin-left: auto;
  padding: 0.6rem 1.1rem;
  background: var(--primary);
  color: var(--bg);
  border-radius: 8px;
  font-weight: 700;
  font-size: clamp(0.85rem, 1vw, 1rem);
  text-decoration: none;
  white-space: nowrap;
  flex-shrink: 0;
  transition: all .15s ease;
}
.bridge-cta a:hover { background: var(--green-500); }

/* APRESENTAÇÃO PESSOAL — slide do Alex */
.layout-bio .bio-card {
  margin-top: 1.5rem;
  padding: 1.75rem;
  border: 1px solid var(--border);
  background: var(--bg-card);
  border-radius: 18px;
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 2rem;
  align-items: start;
  text-align: left;
}
.layout-bio .bio-photo {
  width: 100%;
  aspect-ratio: 1 / 1;
  border-radius: 14px;
  overflow: hidden;
  background: linear-gradient(135deg, rgba(34, 197, 94, 0.15), rgba(20, 25, 22, 0.8));
  border: 1px solid var(--border-strong);
}
.layout-bio .bio-photo img { width: 100%; height: 100%; object-fit: cover; display: block; }
.layout-bio .bio-text h3 {
  font-size: clamp(1.4rem, 1.8vw, 1.85rem);
  font-weight: 800;
  color: var(--fg);
  margin-bottom: 0.4rem;
}
.layout-bio .bio-text .role {
  font-family: "SF Mono", Monaco, Consolas, monospace;
  font-size: clamp(0.75rem, 0.9vw, 0.9rem);
  color: var(--fg-muted);
  margin-bottom: 1.25rem;
  letter-spacing: 0.05em;
}
.layout-bio .bio-text .bio-paragraph {
  font-size: clamp(0.95rem, 1.1vw, 1.1rem);
  line-height: 1.55;
  color: var(--fg-muted);
  margin-bottom: 1.25rem;
}
.layout-bio .bio-bullets { list-style: none; display: flex; flex-direction: column; gap: 0.55rem; }
.layout-bio .bio-bullets li {
  font-size: clamp(0.9rem, 1.05vw, 1.05rem);
  color: var(--fg-muted);
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
}
.layout-bio .bio-bullets li::before {
  content: "//";
  color: var(--primary);
  font-family: "SF Mono", Monaco, Consolas, monospace;
  font-weight: 700;
  flex-shrink: 0;
}

/* QUOTE / CITAÇÃO grande */
.big-quote {
  font-size: clamp(1.5rem, 2.2vw, 2.4rem);
  font-weight: 700;
  line-height: 1.3;
  color: var(--fg);
  text-align: center;
  max-width: 900px;
  margin: 1.5rem auto;
  letter-spacing: -0.01em;
}
.big-quote::before, .big-quote::after { color: var(--primary); }
.big-quote::before { content: "\201C "; }
.big-quote::after { content: "\201D"; }

/* MATH / NUMBER STACK */
.math-stack {
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
  margin-top: 1.5rem;
  text-align: left;
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
}
.math-row {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: baseline;
  padding: 0.85rem 1.25rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  font-size: clamp(1rem, 1.25vw, 1.25rem);
  color: var(--fg-muted);
}
.math-row .val { color: var(--fg); font-weight: 700; }
.math-row.total { border-color: rgba(34, 197, 94, 0.4); background: linear-gradient(135deg, rgba(34, 197, 94, 0.1), var(--bg-card)); }
.math-row.total .val { color: var(--primary); font-size: clamp(1.2rem, 1.5vw, 1.5rem); }

/* CHIPS (lista horizontal de tags) */
.chips {
  display: flex;
  gap: 0.6rem;
  margin-top: 1.5rem;
  flex-wrap: wrap;
  justify-content: center;
}
.chip {
  padding: 0.5rem 0.95rem;
  border: 1px solid var(--border);
  background: var(--bg-card);
  border-radius: 999px;
  color: var(--fg);
  font-size: clamp(0.85rem, 1vw, 1rem);
  font-weight: 500;
}

/* SCRIPT BOX (pra mostrar mensagens/scripts) */
.script-box {
  margin-top: 1.25rem;
  padding: 1.5rem 1.75rem;
  border: 1px solid var(--border);
  background: var(--bg-card);
  border-radius: 14px;
  text-align: left;
  font-family: "SF Mono", Monaco, Consolas, monospace;
  font-size: clamp(0.85rem, 1vw, 1.05rem);
  line-height: 1.6;
  color: var(--fg);
  white-space: pre-wrap;
}
.script-box .script-label {
  font-size: 0.75rem;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 0.75rem;
  display: block;
  font-family: ui-sans-serif, system-ui;
  font-weight: 700;
}

/* CHROME (botões fixos / labels) */
.ctx-label {
  position: fixed;
  top: 1.5rem;
  right: 1.5rem;
  font-family: "SF Mono", Monaco, Consolas, monospace;
  font-size: clamp(0.7rem, 0.85vw, 0.9rem);
  color: var(--fg-muted);
  z-index: 10;
  letter-spacing: 0.05em;
}
.ctx-label .sep { color: var(--border-strong); margin: 0 0.5rem; }
.ctx-label strong { color: var(--primary); font-weight: 600; }

.menu-btn {
  position: fixed;
  top: 1.25rem;
  left: 1.5rem;
  width: 42px; height: 42px;
  background: rgba(20, 25, 22, 0.7);
  border: 1px solid var(--border-strong);
  border-radius: 10px;
  color: var(--fg);
  cursor: pointer;
  /* removido: backdrop-filter custava repaint no scroll */
  z-index: 20;
  transition: all .2s ease;
  display: flex; align-items: center; justify-content: center;
}
.menu-btn:hover { border-color: var(--primary); color: var(--primary); }
.menu-btn svg { width: 18px; height: 18px; }

/* INDEX OVERLAY */
.index-overlay {
  position: fixed;
  inset: 0;
  /* Background quase opaco — visualmente cobre o deck sem precisar de backdrop-filter (que jankava o scroll) */
  background: rgba(10, 13, 11, 0.985);
  z-index: 50;
  display: none;
  overflow-y: auto;
  padding: 5vh 6vw;
}
.index-overlay.open { display: block; }

.index-overlay .close-btn {
  position: absolute;
  top: 1.25rem;
  left: 1.5rem;
  width: 42px; height: 42px;
  background: rgba(20, 25, 22, 0.7);
  border: 1px solid var(--border-strong);
  border-radius: 10px;
  color: var(--fg);
  cursor: pointer;
  /* removido: backdrop-filter custava repaint no scroll */
  transition: all .2s ease;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.4rem;
}
.index-overlay .close-btn:hover { border-color: var(--primary); color: var(--primary); }

.index-content { max-width: 900px; margin: 0 auto; padding-top: 2rem; }
.index-content h2 {
  font-size: clamp(2rem, 3vw, 3rem);
  margin-bottom: 0.5rem;
  text-align: left;
}
.index-content > p {
  color: var(--fg-muted);
  font-size: clamp(0.95rem, 1.1vw, 1.1rem);
  margin-bottom: 2.5rem;
}

.module-block {
  margin-bottom: 1.5rem;
  padding: 1.25rem 1.5rem;
  border: 1px solid var(--border);
  background: var(--bg-card);
  border-radius: 14px;
  transition: border-color .2s ease;
}
.module-block:hover { border-color: var(--border-strong); }
.module-block.current { border-color: rgba(34, 197, 94, 0.4); background: linear-gradient(135deg, rgba(34, 197, 94, 0.05), var(--bg-card)); }
.module-block .module-meta { display: flex; align-items: center; gap: 0.75rem; margin-bottom: 0.5rem; }
.module-block .module-num {
  font-family: "SF Mono", Monaco, Consolas, monospace;
  font-size: 0.75rem;
  color: var(--primary);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.module-block h3 {
  font-size: clamp(1.05rem, 1.3vw, 1.35rem);
  font-weight: 700;
  color: var(--fg);
  margin-bottom: 0.85rem;
}
.module-block .lessons { display: flex; flex-direction: column; gap: 0.4rem; }
.module-block .lesson {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.6rem 0.85rem;
  border: 1px solid transparent;
  border-radius: 8px;
  cursor: pointer;
  transition: all .15s ease;
  color: var(--fg-muted);
  font-size: clamp(0.85rem, 1vw, 1rem);
  text-decoration: none;
}
.module-block .lesson:hover {
  background: var(--bg-elev);
  border-color: var(--border-strong);
  color: var(--fg);
}
.module-block .lesson.current {
  background: rgba(34, 197, 94, 0.08);
  border-color: rgba(34, 197, 94, 0.3);
  color: var(--fg);
}
.module-block .lesson .num {
  font-family: "SF Mono", Monaco, Consolas, monospace;
  font-size: 0.75rem;
  color: var(--fg-muted);
  width: 3rem;
  flex-shrink: 0;
}
.module-block .lesson.current .num { color: var(--primary); font-weight: 600; }
.module-block .lesson .check { margin-left: auto; font-size: 0.8rem; color: var(--primary); font-weight: 600; }

/* NAV arrows */
.nav {
  position: fixed;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 0.6rem;
  z-index: 10;
}
.nav button {
  width: 38px; height: 38px;
  background: rgba(20, 25, 22, 0.7);
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  color: var(--fg);
  font-size: 1rem;
  cursor: pointer;
  /* removido: backdrop-filter custava repaint no scroll */
  transition: all .2s ease;
}
.nav button:hover { border-color: var(--primary); color: var(--primary); }

.brand {
  position: fixed;
  bottom: 1.5rem;
  left: 1.5rem;
  font-family: "SF Mono", Monaco, Consolas, monospace;
  font-size: clamp(0.7rem, 0.85vw, 0.85rem);
  color: var(--fg-muted);
  z-index: 10;
}
.brand strong { color: var(--fg); font-weight: 700; }

/* LANDING (página inicial — não é deck de aula) */
.landing-wrap {
  min-height: 100vh;
  overflow-y: auto;
  padding: 5vh 6vw;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.landing-wrap.deck { overflow-y: auto; }
.landing-hero { max-width: 1100px; text-align: center; margin: 4rem auto 3rem; }
.landing-hero h1 { margin-bottom: 1.5rem; }
.landing-hero p { max-width: 700px; margin: 0 auto 2rem; }
.landing-grid { width: 100%; max-width: 1100px; }

@media (max-width: 768px) {
  .slide-inner { transform: translate(0, -2vh); width: 92%; }
  .pills, .pills.three { grid-template-columns: 1fr; }
  .layout-bio .bio-card { grid-template-columns: 1fr; gap: 1.25rem; padding: 1.25rem; }
  .layout-bio .bio-photo { width: 60%; margin: 0 auto; }
  .brand { display: none; }
  .bridge-cta { flex-direction: column; align-items: flex-start; }
  .bridge-cta a { margin-left: 0; }
}