/* ============================================================
   12 Conceitos Essenciais do Claude Code · DIO PRO Vitalício Week 2026
   Sistema de design: Material Design 3 (dark scheme)
   ============================================================ */

:root {
  /* Color: Primary (roxo DIO) */
  --md-sys-color-primary:              #C8B6FF;
  --md-sys-color-on-primary:           #2C1B70;
  --md-sys-color-primary-container:    #432C9A;
  --md-sys-color-on-primary-container: #E8DEFF;

  /* Color: Secondary (azul DIO) */
  --md-sys-color-secondary:              #B3C9FF;
  --md-sys-color-on-secondary:           #00316E;
  --md-sys-color-secondary-container:    #1B4894;
  --md-sys-color-on-secondary-container: #DBE3FF;

  /* Color: Tertiary (verde neon DIO) */
  --md-sys-color-tertiary:              #7FDBA1;
  --md-sys-color-on-tertiary:           #00391A;
  --md-sys-color-tertiary-container:    #00522A;
  --md-sys-color-on-tertiary-container: #97F8B9;

  /* Surface */
  --md-sys-color-surface:                  #131318;
  --md-sys-color-surface-dim:              #131318;
  --md-sys-color-surface-bright:           #3A383E;
  --md-sys-color-surface-container-lowest: #0D0D12;
  --md-sys-color-surface-container-low:    #1B1B21;
  --md-sys-color-surface-container:        #1F1F26;
  --md-sys-color-surface-container-high:   #2A2932;
  --md-sys-color-surface-container-highest:#35343D;
  --md-sys-color-on-surface:               #E6E1E9;
  --md-sys-color-on-surface-variant:       #C8C5D0;
  --md-sys-color-outline:                  #938F99;
  --md-sys-color-outline-variant:          #49454F;
  --md-sys-color-scrim:                    #000000;

  /* State layers */
  --md-sys-state-hover-opacity:    0.08;
  --md-sys-state-focus-opacity:    0.12;
  --md-sys-state-pressed-opacity:  0.12;

  /* Elevation */
  --md-sys-elevation-0: none;
  --md-sys-elevation-1: 0px 1px 2px 0px rgba(0,0,0,0.30), 0px 1px 3px 1px rgba(0,0,0,0.15);
  --md-sys-elevation-2: 0px 1px 2px 0px rgba(0,0,0,0.30), 0px 2px 6px 2px rgba(0,0,0,0.15);
  --md-sys-elevation-3: 0px 1px 3px 0px rgba(0,0,0,0.30), 0px 4px 8px 3px rgba(0,0,0,0.15);
  --md-sys-elevation-4: 0px 2px 3px 0px rgba(0,0,0,0.30), 0px 6px 10px 4px rgba(0,0,0,0.15);
  --md-sys-elevation-5: 0px 4px 4px 0px rgba(0,0,0,0.30), 0px 8px 12px 6px rgba(0,0,0,0.15);

  /* Shape */
  --md-sys-shape-corner-extra-small:  4px;
  --md-sys-shape-corner-small:        8px;
  --md-sys-shape-corner-medium:       12px;
  --md-sys-shape-corner-large:        16px;
  --md-sys-shape-corner-extra-large:  28px;
  --md-sys-shape-corner-full:         9999px;

  /* Typography */
  --md-sys-typescale-font-display: 'Sora', system-ui, sans-serif;
  --md-sys-typescale-font-body:    'Sora', system-ui, sans-serif;
  --md-sys-typescale-font-mono:    'JetBrains Mono', ui-monospace, monospace;

  /* Motion */
  --md-sys-motion-easing-standard:        cubic-bezier(0.2, 0, 0, 1);
  --md-sys-motion-easing-emphasized-decel:cubic-bezier(0.05, 0.7, 0.1, 1);
  --md-sys-motion-duration-short3:  150ms;
  --md-sys-motion-duration-medium2: 300ms;
  --md-sys-motion-duration-long2:   500ms;

  /* Aliases */
  --bg:      var(--md-sys-color-surface);
  --surface: var(--md-sys-color-surface-container);
  --surface-high: var(--md-sys-color-surface-container-high);
  --on-surface: var(--md-sys-color-on-surface);
  --on-surface-variant: var(--md-sys-color-on-surface-variant);
  --outline: var(--md-sys-color-outline-variant);
  --primary:   var(--md-sys-color-primary);
  --secondary: var(--md-sys-color-secondary);
  --tertiary:  var(--md-sys-color-tertiary);

  --grad-brand: linear-gradient(135deg, var(--md-sys-color-primary) 0%, var(--md-sys-color-secondary) 100%);
  --grad-title: linear-gradient(120deg,
    var(--md-sys-color-primary) 0%,
    var(--md-sys-color-secondary) 50%,
    var(--md-sys-color-tertiary) 100%);

  --maxw: 1200px;
}

/* Reset */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--md-sys-typescale-font-body);
  color: var(--on-surface);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; border: 0; background: transparent; color: inherit; }
ul, ol { list-style: none; }
code {
  font-family: var(--md-sys-typescale-font-mono);
  font-size: 0.88em;
  padding: 2px 6px;
  border-radius: var(--md-sys-shape-corner-extra-small);
  background: color-mix(in srgb, var(--primary) 12%, transparent);
  color: var(--primary);
  border: 1px solid color-mix(in srgb, var(--primary) 24%, transparent);
}

.container {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: clamp(20px, 4vw, 40px);
}

/* Background */
.bg-layer {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  overflow: hidden;
}
.bg-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(color-mix(in srgb, var(--primary) 6%, transparent) 1px, transparent 1px),
    linear-gradient(90deg, color-mix(in srgb, var(--secondary) 5%, transparent) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse at 50% 0%, black 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse at 50% 0%, black 30%, transparent 75%);
}
.bg-blob {
  position: absolute;
  filter: blur(90px);
  border-radius: 50%;
  will-change: transform;
}
.bg-blob--primary {
  width: 520px; height: 520px;
  background: radial-gradient(circle, color-mix(in srgb, var(--primary) 40%, transparent), transparent 70%);
  top: -160px; left: -120px;
  animation: drift1 22s var(--md-sys-motion-easing-standard) infinite alternate;
}
.bg-blob--secondary {
  width: 460px; height: 460px;
  background: radial-gradient(circle, color-mix(in srgb, var(--secondary) 35%, transparent), transparent 70%);
  top: 30%; right: -140px;
  animation: drift2 26s var(--md-sys-motion-easing-standard) infinite alternate;
}
.bg-blob--tertiary {
  width: 360px; height: 360px;
  background: radial-gradient(circle, color-mix(in srgb, var(--tertiary) 25%, transparent), transparent 70%);
  bottom: -100px; left: 30%;
  animation: drift3 30s var(--md-sys-motion-easing-standard) infinite alternate;
}
@keyframes drift1 { to { transform: translate(60px, 40px); } }
@keyframes drift2 { to { transform: translate(-50px, 60px); } }
@keyframes drift3 { to { transform: translate(40px, -50px); } }

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  background: color-mix(in srgb, var(--bg) 70%, transparent);
  border-bottom: 1px solid color-mix(in srgb, var(--outline) 60%, transparent);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: 16px;
}
.brand {
  display: inline-flex;
  align-items: center;
  font-weight: 700;
  letter-spacing: -0.01em;
  transition: opacity var(--md-sys-motion-duration-short3) var(--md-sys-motion-easing-standard);
}
.brand:hover { opacity: 0.8; }
.brand-text {
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -0.02em;
  text-transform: lowercase;
  background: var(--grad-brand);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.nav {
  display: flex;
  align-items: center;
  gap: clamp(16px, 3vw, 28px);
  font-size: 14px;
  color: var(--on-surface-variant);
  font-weight: 500;
}
.nav a {
  position: relative;
  padding: 6px 2px;
  transition: color var(--md-sys-motion-duration-short3) var(--md-sys-motion-easing-standard);
}
.nav a:not(.nav-icon)::after {
  content: '';
  position: absolute;
  left: 0; right: 0;
  bottom: 0;
  height: 2px;
  background: var(--grad-brand);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--md-sys-motion-duration-medium2) var(--md-sys-motion-easing-emphasized-decel);
  border-radius: 2px;
}
.nav a:hover { color: var(--on-surface); }
.nav a:not(.nav-icon):hover::after { transform: scaleX(1); }

/* Ícone do GitHub no header */
.nav-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--md-sys-shape-corner-full);
  color: var(--on-surface-variant);
  margin-left: 4px;
  transition: color var(--md-sys-motion-duration-short3) var(--md-sys-motion-easing-standard),
              background var(--md-sys-motion-duration-short3) var(--md-sys-motion-easing-standard),
              transform var(--md-sys-motion-duration-short3) var(--md-sys-motion-easing-emphasized-decel);
}
.nav-icon svg { width: 18px; height: 18px; }
.nav-icon:hover {
  color: var(--primary);
  background: color-mix(in srgb, var(--primary) 12%, transparent);
  transform: translateY(-1px);
}

/* Hero */
.hero {
  padding-block: clamp(72px, 12vw, 140px) clamp(48px, 8vw, 90px);
  position: relative;
}
.hero-inner { max-width: 880px; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 14px 8px 12px;
  border-radius: var(--md-sys-shape-corner-full);
  background: color-mix(in srgb, var(--tertiary) 14%, transparent);
  border: 1px solid color-mix(in srgb, var(--tertiary) 32%, transparent);
  color: var(--tertiary);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.02em;
  margin-bottom: 24px;
  animation: fadeUp var(--md-sys-motion-duration-long2) var(--md-sys-motion-easing-emphasized-decel) both;
}
.eyebrow-pulse {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--tertiary);
  box-shadow: 0 0 0 0 color-mix(in srgb, var(--tertiary) 60%, transparent);
  animation: pulse 2s var(--md-sys-motion-easing-standard) infinite;
}
@keyframes pulse {
  0%   { box-shadow: 0 0 0 0 color-mix(in srgb, var(--tertiary) 55%, transparent); }
  70%  { box-shadow: 0 0 0 10px color-mix(in srgb, var(--tertiary) 0%, transparent); }
  100% { box-shadow: 0 0 0 0 color-mix(in srgb, var(--tertiary) 0%, transparent); }
}

.hero-title {
  font-family: var(--md-sys-typescale-font-display);
  font-size: clamp(2.4rem, 6vw, 4.2rem);
  font-weight: 800;
  line-height: 1.07;
  letter-spacing: -0.025em;
  margin-bottom: 24px;
  animation: fadeUp var(--md-sys-motion-duration-long2) var(--md-sys-motion-easing-emphasized-decel) 80ms both;
}
.hero-title__accent {
  display: inline-block;
  background: var(--grad-title);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  background-size: 200% 100%;
  animation: shimmer 6s var(--md-sys-motion-easing-standard) infinite;
}
@keyframes shimmer {
  0%, 100% { background-position: 0% 50%; }
  50%      { background-position: 100% 50%; }
}

.hero-subtitle {
  font-size: clamp(1.05rem, 1.6vw, 1.18rem);
  line-height: 1.55;
  color: var(--on-surface-variant);
  max-width: 640px;
  margin-bottom: 32px;
  animation: fadeUp var(--md-sys-motion-duration-long2) var(--md-sys-motion-easing-emphasized-decel) 160ms both;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  animation: fadeUp var(--md-sys-motion-duration-long2) var(--md-sys-motion-easing-emphasized-decel) 240ms both;
}

/* Buttons MD3 */
.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 40px;
  padding: 0 24px;
  border-radius: var(--md-sys-shape-corner-full);
  font-weight: 500;
  font-size: 14px;
  letter-spacing: 0.005em;
  transition: background var(--md-sys-motion-duration-short3) var(--md-sys-motion-easing-standard),
              box-shadow var(--md-sys-motion-duration-short3) var(--md-sys-motion-easing-standard),
              color var(--md-sys-motion-duration-short3) var(--md-sys-motion-easing-standard);
  overflow: hidden;
  isolation: isolate;
  white-space: nowrap;
}
.btn svg { width: 18px; height: 18px; transition: transform var(--md-sys-motion-duration-medium2) var(--md-sys-motion-easing-emphasized-decel); }
.btn:hover svg { transform: translateX(3px); }

.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: currentColor;
  opacity: 0;
  transition: opacity var(--md-sys-motion-duration-short3) var(--md-sys-motion-easing-standard);
  pointer-events: none;
}
.btn:hover::before { opacity: var(--md-sys-state-hover-opacity); }
.btn:focus-visible::before { opacity: var(--md-sys-state-focus-opacity); }
.btn:active::before { opacity: var(--md-sys-state-pressed-opacity); }

.btn--filled {
  background: var(--primary);
  color: var(--md-sys-color-on-primary);
  box-shadow: var(--md-sys-elevation-0);
}
.btn--filled:hover { box-shadow: var(--md-sys-elevation-1); }
.btn--filled::before { background: var(--md-sys-color-on-primary); }

.btn--outlined {
  background: transparent;
  color: var(--primary);
  border: 1px solid var(--md-sys-color-outline);
}
.btn--outlined:hover { border-color: var(--primary); }

.btn--text {
  height: 36px;
  padding: 0 14px;
  background: transparent;
  color: var(--primary);
}
.btn--text:hover { color: var(--primary); }

.btn--disabled {
  color: color-mix(in srgb, var(--on-surface) 38%, transparent);
  cursor: not-allowed;
  pointer-events: none;
}
.btn--disabled svg { display: none; }

/* Section header */
.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 48px;
}
.section-tag {
  display: inline-block;
  font-family: var(--md-sys-typescale-font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--primary);
  background: color-mix(in srgb, var(--primary) 12%, transparent);
  padding: 5px 12px;
  border-radius: var(--md-sys-shape-corner-full);
  border: 1px solid color-mix(in srgb, var(--primary) 24%, transparent);
  margin-bottom: 16px;
}
.section-title {
  font-size: clamp(1.8rem, 3.4vw, 2.4rem);
  font-weight: 700;
  letter-spacing: -0.018em;
  line-height: 1.18;
  margin-bottom: 12px;
}
.section-sub {
  color: var(--on-surface-variant);
  font-size: 1rem;
}

/* Features Grid */
.features {
  padding-block: clamp(48px, 8vw, 96px);
}
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: clamp(16px, 2vw, 24px);
}
@media (min-width: 1000px) {
  .feature-grid { grid-template-columns: repeat(3, 1fr); }
}
@media (min-width: 600px) and (max-width: 999px) {
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
}

/* Card MD3 */
.card {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--outline);
  border-radius: var(--md-sys-shape-corner-large);
  padding: 24px 22px 22px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  box-shadow: var(--md-sys-elevation-1);
  transition: transform var(--md-sys-motion-duration-medium2) var(--md-sys-motion-easing-emphasized-decel),
              box-shadow var(--md-sys-motion-duration-medium2) var(--md-sys-motion-easing-standard),
              border-color var(--md-sys-motion-duration-medium2) var(--md-sys-motion-easing-standard),
              background var(--md-sys-motion-duration-medium2) var(--md-sys-motion-easing-standard);
  overflow: hidden;
  animation: cardIn var(--md-sys-motion-duration-long2) var(--md-sys-motion-easing-emphasized-decel) both;
  animation-delay: var(--delay, 0ms);
}
.card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--primary);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--md-sys-motion-duration-medium2) var(--md-sys-motion-easing-standard);
}
.card:hover {
  transform: translateY(-3px);
  box-shadow: var(--md-sys-elevation-3);
  background: var(--surface-high);
  border-color: color-mix(in srgb, var(--primary) 30%, transparent);
}
.card:hover::before { opacity: 0.05; }

.card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 36px;
  height: 36px;
  padding: 0 10px;
  border-radius: var(--md-sys-shape-corner-full);
  background: var(--tertiary);
  color: var(--md-sys-color-on-tertiary);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: -0.01em;
  position: relative;
  flex-shrink: 0;
  box-shadow:
    0 0 0 4px color-mix(in srgb, var(--tertiary) 10%, transparent),
    var(--md-sys-elevation-1);
  transition: transform var(--md-sys-motion-duration-medium2) var(--md-sys-motion-easing-emphasized-decel),
              box-shadow var(--md-sys-motion-duration-medium2) var(--md-sys-motion-easing-standard);
}
.card:hover .badge {
  transform: scale(1.06);
  box-shadow:
    0 0 0 6px color-mix(in srgb, var(--tertiary) 14%, transparent),
    var(--md-sys-elevation-2);
}

.card-icon {
  width: 42px;
  height: 42px;
  border-radius: var(--md-sys-shape-corner-medium);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: color-mix(in srgb, var(--primary) 12%, transparent);
  border: 1px solid color-mix(in srgb, var(--primary) 22%, transparent);
  color: var(--secondary);
  transition: color var(--md-sys-motion-duration-medium2) var(--md-sys-motion-easing-standard),
              transform var(--md-sys-motion-duration-medium2) var(--md-sys-motion-easing-emphasized-decel),
              border-color var(--md-sys-motion-duration-medium2) var(--md-sys-motion-easing-standard);
}
.card-icon svg { width: 22px; height: 22px; }
.card:hover .card-icon {
  color: var(--primary);
  border-color: color-mix(in srgb, var(--primary) 45%, transparent);
  transform: rotate(-4deg) scale(1.05);
}

.card-title {
  font-size: 1.2rem;
  font-weight: 600;
  letter-spacing: -0.015em;
  color: var(--primary);
  line-height: 1.25;
}
.card-title__sub {
  display: block;
  font-size: 0.74rem;
  font-weight: 500;
  letter-spacing: 0;
  color: var(--on-surface-variant);
  margin-top: 2px;
}

.card-desc {
  color: var(--on-surface-variant);
  font-size: 0.93rem;
  line-height: 1.55;
  flex-grow: 1;
}

.card-tip {
  font-size: 0.88rem;
  color: var(--on-surface-variant);
  padding-top: 12px;
  border-top: 1px dashed color-mix(in srgb, var(--outline) 60%, transparent);
  line-height: 1.5;
}
.card-tip span {
  color: var(--tertiary);
  font-weight: 600;
  margin-right: 4px;
}
.card-tip em { font-style: normal; color: var(--primary); font-family: var(--md-sys-typescale-font-mono); font-size: 0.92em; }

.card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--secondary);
  padding-top: 4px;
  transition: color var(--md-sys-motion-duration-short3) var(--md-sys-motion-easing-standard),
              gap var(--md-sys-motion-duration-short3) var(--md-sys-motion-easing-standard);
}
.card-link svg { width: 14px; height: 14px; transition: transform var(--md-sys-motion-duration-medium2) var(--md-sys-motion-easing-emphasized-decel); }
.card-link:hover { color: var(--primary); gap: 8px; }
.card-link:hover svg { transform: translate(2px, -2px); }

.card--highlight { background: var(--md-sys-color-surface-container-low); }

.docs-note {
  margin-top: 32px;
  text-align: center;
  color: var(--on-surface-variant);
  font-size: 0.92rem;
}
.docs-note a {
  color: var(--secondary);
  font-family: var(--md-sys-typescale-font-mono);
  border-bottom: 1px solid transparent;
  transition: color var(--md-sys-motion-duration-short3) var(--md-sys-motion-easing-standard),
              border-color var(--md-sys-motion-duration-short3) var(--md-sys-motion-easing-standard);
}
.docs-note a:hover { color: var(--primary); border-bottom-color: currentColor; }

@keyframes cardIn {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(14px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Lives */
.lives {
  padding-block: clamp(48px, 8vw, 96px);
}
.lives-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
  max-width: 920px;
  margin: 0 auto;
}
.live-item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 20px;
  align-items: start;
  background: var(--surface);
  border: 1px solid var(--outline);
  border-radius: var(--md-sys-shape-corner-large);
  padding: 24px;
  box-shadow: var(--md-sys-elevation-1);
  transition: transform var(--md-sys-motion-duration-medium2) var(--md-sys-motion-easing-emphasized-decel),
              box-shadow var(--md-sys-motion-duration-medium2) var(--md-sys-motion-easing-standard),
              border-color var(--md-sys-motion-duration-medium2) var(--md-sys-motion-easing-standard);
  position: relative;
}
.live-item:hover {
  transform: translateY(-2px);
  box-shadow: var(--md-sys-elevation-3);
  border-color: color-mix(in srgb, var(--primary) 30%, transparent);
}
.live-marker {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: var(--md-sys-shape-corner-medium);
  background: color-mix(in srgb, var(--primary) 14%, transparent);
  border: 1px solid color-mix(in srgb, var(--primary) 28%, transparent);
  flex-shrink: 0;
}
.live-num {
  font-family: var(--md-sys-typescale-font-display);
  font-size: 1.5rem;
  font-weight: 800;
  background: var(--grad-title);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  letter-spacing: -0.04em;
  line-height: 1;
}
.live-body { min-width: 0; }
.live-tag {
  display: inline-block;
  font-family: var(--md-sys-typescale-font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--tertiary);
  margin-bottom: 6px;
}
.live-title {
  font-size: clamp(1.05rem, 1.8vw, 1.25rem);
  font-weight: 600;
  letter-spacing: -0.015em;
  color: var(--on-surface);
  line-height: 1.3;
  margin-bottom: 8px;
}
.live-desc {
  color: var(--on-surface-variant);
  font-size: 0.95rem;
  margin-bottom: 14px;
  line-height: 1.55;
}

/* Chips */
.chip-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 14px;
}
.chip {
  display: inline-flex;
  align-items: center;
  height: 28px;
  padding: 0 12px;
  border-radius: var(--md-sys-shape-corner-small);
  background: color-mix(in srgb, var(--primary) 8%, transparent);
  border: 1px solid color-mix(in srgb, var(--primary) 28%, transparent);
  color: var(--primary);
  font-family: var(--md-sys-typescale-font-mono);
  font-size: 0.78rem;
  font-weight: 500;
  transition: background var(--md-sys-motion-duration-short3) var(--md-sys-motion-easing-standard),
              border-color var(--md-sys-motion-duration-short3) var(--md-sys-motion-easing-standard);
}
.live-item:hover .chip {
  background: color-mix(in srgb, var(--primary) 14%, transparent);
  border-color: color-mix(in srgb, var(--primary) 40%, transparent);
}
.chip--muted {
  background: transparent;
  border-color: var(--outline);
  color: var(--on-surface-variant);
  font-style: italic;
}

.live-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin-inline: -14px;
}

.lives-note {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-top: 32px;
  padding: 12px 20px;
  background: color-mix(in srgb, var(--tertiary) 8%, transparent);
  border: 1px solid color-mix(in srgb, var(--tertiary) 22%, transparent);
  border-radius: var(--md-sys-shape-corner-full);
  color: var(--on-surface-variant);
  font-size: 0.9rem;
  max-width: max-content;
  margin-inline: auto;
}
.lives-note svg { width: 16px; height: 16px; color: var(--tertiary); flex-shrink: 0; }
.lives-note strong { color: var(--tertiary); font-weight: 600; }

/* About */
.about {
  padding-block: clamp(40px, 7vw, 80px);
}
.about-inner {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: clamp(32px, 6vw, 64px);
  align-items: center;
}
.about-title {
  font-size: clamp(1.6rem, 3vw, 2.1rem);
  font-weight: 700;
  letter-spacing: -0.018em;
  margin-block: 12px 16px;
  line-height: 1.2;
}
.about-text {
  color: var(--on-surface-variant);
  font-size: 1rem;
  line-height: 1.65;
}
.about-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}
.stat {
  background: var(--surface);
  border: 1px solid var(--outline);
  border-radius: var(--md-sys-shape-corner-large);
  padding: 24px 16px;
  text-align: center;
  transition: transform var(--md-sys-motion-duration-medium2) var(--md-sys-motion-easing-emphasized-decel),
              border-color var(--md-sys-motion-duration-medium2) var(--md-sys-motion-easing-standard);
}
.stat:hover {
  transform: translateY(-3px);
  border-color: color-mix(in srgb, var(--primary) 40%, transparent);
}
.stat-value {
  display: block;
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  font-weight: 800;
  background: var(--grad-title);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  line-height: 1;
  margin-bottom: 6px;
  letter-spacing: -0.035em;
}
.stat-label {
  font-size: 0.8rem;
  color: var(--on-surface-variant);
  letter-spacing: 0.02em;
}

/* Footer */
.site-footer {
  margin-top: clamp(40px, 7vw, 80px);
  border-top: 1px solid var(--outline);
  padding-block: 32px;
  background: color-mix(in srgb, var(--bg) 60%, transparent);
  backdrop-filter: blur(10px);
}
.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.footer-brand {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: -0.01em;
  background: var(--grad-brand);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.footer-note {
  font-size: 13px;
  color: var(--on-surface-variant);
  flex: 1;
  text-align: center;
  min-width: 220px;
}
.footer-note strong { color: var(--on-surface); font-weight: 600; }
.footer-note a {
  color: var(--secondary);
  border-bottom: 1px solid transparent;
  transition: color var(--md-sys-motion-duration-short3) var(--md-sys-motion-easing-standard),
              border-color var(--md-sys-motion-duration-short3) var(--md-sys-motion-easing-standard);
}
.footer-note a:hover {
  color: var(--primary);
  border-bottom-color: currentColor;
}

.back-top {
  width: 48px;
  height: 48px;
  border-radius: var(--md-sys-shape-corner-large);
  background: var(--md-sys-color-primary-container);
  color: var(--md-sys-color-on-primary-container);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--md-sys-elevation-2);
  transition: transform var(--md-sys-motion-duration-short3) var(--md-sys-motion-easing-emphasized-decel),
              box-shadow var(--md-sys-motion-duration-short3) var(--md-sys-motion-easing-standard);
  position: relative;
  isolation: isolate;
  overflow: hidden;
}
.back-top::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--md-sys-color-on-primary-container);
  opacity: 0;
  transition: opacity var(--md-sys-motion-duration-short3) var(--md-sys-motion-easing-standard);
  pointer-events: none;
}
.back-top svg { width: 20px; height: 20px; }
.back-top:hover {
  transform: translateY(-3px);
  box-shadow: var(--md-sys-elevation-4);
}
.back-top:hover::before { opacity: var(--md-sys-state-hover-opacity); }
.back-top:active::before { opacity: var(--md-sys-state-pressed-opacity); }

/* Reveal */
.js .reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity var(--md-sys-motion-duration-long2) var(--md-sys-motion-easing-emphasized-decel),
              transform var(--md-sys-motion-duration-long2) var(--md-sys-motion-easing-emphasized-decel);
}
.js .reveal.is-visible { opacity: 1; transform: translateY(0); }

/* Focus */
:focus-visible {
  outline: 3px solid var(--primary);
  outline-offset: 2px;
  border-radius: 6px;
}

/* Responsivo */
@media (max-width: 880px) {
  .about-inner { grid-template-columns: 1fr; }
  .about-stats { max-width: 480px; }
}
@media (max-width: 720px) {
  .nav { gap: 14px; font-size: 13.5px; }
  .live-item { grid-template-columns: 1fr; gap: 12px; }
  .live-marker { width: 48px; height: 48px; }
  .live-num { font-size: 1.25rem; }
  .footer-inner { flex-direction: column; text-align: center; }
}
@media (max-width: 480px) {
  .nav a:not(.nav-icon) { display: none; }
  .hero { padding-top: 64px; }
  .hero-meta .btn { width: 100%; }
  .about-stats { grid-template-columns: 1fr 1fr; }
  .stat:last-child { grid-column: 1 / -1; }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  html { scroll-behavior: auto; }
  .bg-blob { animation: none; }
}