/* ============================================================
   STAai × PixFly — Formação Prática de Claude IA
   Deck 24/abr/2026 — 3h — Kelly
   Palette: graphite black + mustard yellow
   ============================================================ */

:root {
  /* Brand palette */
  --bg: #1a1d20;                 /* deep graphite */
  --bg-elev: #24282d;            /* elevated surface */
  --bg-card: #2a2f35;             /* card bg */
  --bg-light: #f5f5f0;           /* warm off-white (contrast slides) */
  --accent: #F4B72E;             /* STAai mustard */
  --accent-dim: rgba(244, 183, 46, 0.18);
  --accent-hover: #e5a91e;
  --text: #f0ede6;               /* warm off-white on dark */
  --text-muted: #a8afb5;
  --text-faint: #6b7176;
  --text-dark: #1a1d20;          /* for light backgrounds */
  --border: #3a3f45;
  --border-light: #4a4f55;

  /* Typography */
  --font-heading: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, 'SF Mono', monospace;
}

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

html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  overflow: hidden;
  height: 100vh;
  width: 100vw;
  font-feature-settings: "ss01", "cv01", "cv11";
}

/* ============================================================
   Slide container
   ============================================================ */

.deck {
  position: fixed;
  inset: 0;
  overflow: hidden;
}

.slide {
  position: absolute;
  inset: 0;
  padding: 64px 96px 96px;
  display: none;
  flex-direction: column;
  justify-content: center;
  opacity: 0;
  transition: opacity 320ms ease-out;
}

.slide.active {
  display: flex;
  opacity: 1;
}

.slide-inner {
  max-width: 1400px;
  margin: 0 auto;
  width: 100%;
}

/* ============================================================
   Typography
   ============================================================ */

h1, h2, h3 {
  font-family: var(--font-heading);
  color: var(--text);
  letter-spacing: -0.025em;
  line-height: 1.05;
}

h1 {
  font-size: clamp(48px, 6vw, 88px);
  font-weight: 800;
  margin-bottom: 32px;
}

h1 .accent {
  color: var(--accent);
}

h1 .underline-accent {
  background: linear-gradient(transparent 78%, var(--accent) 78%, var(--accent) 94%, transparent 94%);
  background-size: 100% 100%;
  background-repeat: no-repeat;
  padding: 0 2px;
}

h2 {
  font-size: clamp(36px, 4.2vw, 56px);
  font-weight: 700;
  margin-bottom: 24px;
}

h3 {
  font-size: clamp(22px, 2vw, 28px);
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--accent);
}

.eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--accent);
  margin-bottom: 20px;
}

.eyebrow-white {
  color: var(--text-muted);
}

p {
  font-size: clamp(17px, 1.45vw, 22px);
  line-height: 1.55;
  color: var(--text-muted);
  margin-bottom: 20px;
  max-width: 920px;
}

p strong, strong {
  color: var(--text);
  font-weight: 700;
}

em {
  font-style: italic;
  color: var(--text);
}

.lead {
  font-size: clamp(20px, 1.8vw, 26px);
  color: var(--text);
  font-weight: 500;
  line-height: 1.45;
}

ul, ol {
  list-style: none;
  padding: 0;
}

ul li, ol li {
  font-size: clamp(16px, 1.35vw, 20px);
  line-height: 1.5;
  color: var(--text-muted);
  padding-left: 28px;
  position: relative;
  margin-bottom: 14px;
}

ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 12px;
  height: 3px;
  background: var(--accent);
}

ol {
  counter-reset: item;
}

ol li {
  counter-increment: item;
}

ol li::before {
  content: counter(item) ".";
  position: absolute;
  left: 0;
  top: 0;
  color: var(--accent);
  font-weight: 700;
}

/* ============================================================
   Header bar (persistent on all slides)
   ============================================================ */

.deck-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  padding: 22px 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  z-index: 100;
  pointer-events: none;
}

.deck-logos {
  display: flex;
  align-items: center;
  gap: 18px;
}

.deck-logos img {
  height: 22px;
  opacity: 0.9;
}

.deck-logos .sep {
  color: var(--text-faint);
  font-size: 14px;
  font-weight: 300;
}

.deck-logos .pixfly-label {
  font-family: 'Source Serif 4', Georgia, serif;
  font-size: 16px;
  color: var(--text-muted);
  font-style: italic;
}

.deck-meta {
  font-size: 12px;
  color: var(--text-faint);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-weight: 500;
}

/* ============================================================
   Footer bar (progress + keys hint)
   ============================================================ */

.deck-footer {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 18px 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  z-index: 100;
  pointer-events: none;
}

.progress {
  flex: 1;
  max-width: 360px;
  height: 2px;
  background: var(--border);
  border-radius: 2px;
  overflow: hidden;
}

.progress-bar {
  height: 100%;
  background: var(--accent);
  transition: width 300ms ease-out;
}

.slide-counter {
  font-size: 12px;
  color: var(--text-faint);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.05em;
}

.keys-hint {
  font-size: 11px;
  color: var(--text-faint);
  display: flex;
  gap: 16px;
  pointer-events: auto;
}

.keys-hint kbd {
  display: inline-block;
  padding: 2px 7px;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-muted);
  margin-right: 4px;
}

/* ============================================================
   Slide variants
   ============================================================ */

/* Hero slide (opening) */
.slide--hero {
  background:
    radial-gradient(ellipse 60% 50% at 80% 20%, var(--accent-dim), transparent 70%),
    radial-gradient(ellipse 50% 40% at 20% 80%, rgba(244, 183, 46, 0.08), transparent 70%),
    var(--bg);
}

.slide--hero .slide-inner {
  text-align: left;
}

.slide--hero .eyebrow {
  font-size: 14px;
  letter-spacing: 0.2em;
}

.slide--hero h1 {
  font-size: clamp(56px, 7.5vw, 120px);
  font-weight: 900;
  line-height: 1;
  margin-bottom: 28px;
}

.slide--hero .lead {
  font-size: clamp(22px, 2vw, 30px);
  font-weight: 400;
  color: var(--text-muted);
  max-width: 860px;
  line-height: 1.4;
}

.slide--hero .meta-row {
  margin-top: 48px;
  display: flex;
  gap: 48px;
  flex-wrap: wrap;
  padding-top: 32px;
  border-top: 1px solid var(--border);
}

.slide--hero .meta-row div {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.slide--hero .meta-row .label {
  font-size: 11px;
  color: var(--text-faint);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  font-weight: 500;
}

.slide--hero .meta-row .value {
  font-size: 18px;
  color: var(--text);
  font-weight: 600;
}

/* Section divider (between blocks) */
.slide--section {
  background: var(--bg);
}

.slide--section .section-number {
  font-size: clamp(100px, 12vw, 180px);
  font-weight: 900;
  color: var(--accent);
  line-height: 1;
  letter-spacing: -0.04em;
  margin-bottom: 16px;
  opacity: 0.25;
}

.slide--section h1 {
  font-size: clamp(52px, 6vw, 84px);
  font-weight: 800;
  margin-bottom: 32px;
}

.slide--section .section-lead {
  font-size: clamp(20px, 1.7vw, 26px);
  color: var(--text-muted);
  max-width: 780px;
  line-height: 1.5;
}

/* Standard content slide */
.slide--content .content-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  align-items: start;
}

.slide--content .content-grid--2col {
  grid-template-columns: 1fr 1fr;
  gap: 64px;
}

.slide--content .content-grid--illustration-left {
  grid-template-columns: minmax(380px, 40%) 1fr;
  gap: 64px;
  align-items: center;
}

/* Cards grid */
.card-grid {
  display: grid;
  gap: 24px;
  margin-top: 32px;
}

.card-grid--3 { grid-template-columns: repeat(3, 1fr); }
.card-grid--4 { grid-template-columns: repeat(4, 1fr); }
.card-grid--2 { grid-template-columns: repeat(2, 1fr); }

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 28px;
  transition: all 200ms ease-out;
}

.card--accent {
  border-color: var(--accent);
  background: linear-gradient(135deg, var(--bg-card), rgba(244, 183, 46, 0.06));
}

.card h3 {
  font-size: 20px;
  margin-bottom: 10px;
  color: var(--text);
  font-weight: 700;
}

.card .card-eyebrow {
  font-size: 11px;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-weight: 600;
  margin-bottom: 10px;
}

.card p {
  font-size: 15px;
  line-height: 1.5;
  margin: 0;
  color: var(--text-muted);
}

/* Quote callout (for X posts) */
.quote-card {
  background: #000;
  border: 1px solid #2a2f35;
  border-radius: 16px;
  padding: 32px 36px;
  max-width: 720px;
  margin: 24px auto;
}

.quote-card .qc-header {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 24px;
}

.quote-card .qc-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: #1a1a1a;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: var(--accent);
  font-size: 16px;
  flex-shrink: 0;
}

.quote-card .qc-name {
  color: #fff;
  font-weight: 700;
  font-size: 15px;
}

.quote-card .qc-handle {
  color: #6e767d;
  font-size: 14px;
  margin-top: 2px;
}

.quote-card .qc-body {
  color: #e7e9ea;
  font-size: 17px;
  line-height: 1.45;
  margin: 0;
}

.quote-card .qc-body strong {
  color: #fff;
}

.quote-card .qc-body em {
  color: var(--accent);
  font-style: normal;
  font-weight: 600;
}

.quote-card .qc-meta {
  color: #6e767d;
  font-size: 13px;
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid #1a1a1a;
}

.quote-card .qc-meta strong {
  color: #e7e9ea;
}

/* Two-column split slide */
.split-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

/* Timeline flow (amarração visual) */
.flow {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  row-gap: 40px;      /* generous breathing room when items wrap into new row */
  column-gap: 0;
  margin-top: 40px;
}

.flow-step {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 20px 16px;
  text-align: center;
  flex: 1 1 160px;    /* each step can grow, min 160px */
  min-width: 140px;
  max-width: 220px;
}

.flow-step .fs-num {
  font-size: 11px;
  color: var(--accent);
  font-weight: 700;
  letter-spacing: 0.1em;
  margin-bottom: 6px;
}

.flow-step .fs-label {
  font-size: 16px;
  color: var(--text);
  font-weight: 600;
}

.flow-arrow {
  color: var(--accent);
  font-size: 18px;
  padding: 0 4px;
  font-weight: 600;
}

/* Code / prompt box */
.prompt-box {
  background: #000;
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: 10px;
  padding: 24px 28px;
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1.6;
  color: #d4f4d4;
  margin: 24px 0;
}

.prompt-box .label {
  font-family: var(--font-body);
  font-size: 11px;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-weight: 700;
  margin-bottom: 12px;
}

/* Big stat display */
.stat-row {
  display: flex;
  gap: 64px;
  margin: 32px 0;
}

.stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.stat .stat-num {
  font-size: clamp(40px, 4vw, 64px);
  font-weight: 900;
  color: var(--accent);
  line-height: 1;
  letter-spacing: -0.02em;
}

.stat .stat-label {
  font-size: 13px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-weight: 500;
}

/* SVG image placement */
.hero-image {
  width: 100%;
  max-height: 420px;
  display: block;
  margin: 24px auto;
  border-radius: 10px;
}

.hero-image--sm {
  max-height: 280px;
}

.hero-image--md {
  max-height: 360px;
}

.hero-image--lg {
  max-height: 480px;
}

/* Utility */
.text-center { text-align: center; }
.accent-text { color: var(--accent); }
.muted-text { color: var(--text-muted); }

/* ============================================================
   Responsive (projector friendly)
   ============================================================ */

@media (max-width: 1100px) {
  .slide {
    padding: 48px 56px 80px;
  }
  .card-grid--4 {
    grid-template-columns: repeat(2, 1fr);
  }
  .split-2 {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}