/* ==========================================================================
   Triscord — Estilo Canônico do Site Oficial (Open Design user:triscord)
   Identidade "Estúdio Noturno": ciano #22c8e8, grafite frio, tipografia precisa.
   ========================================================================== */

:root {
  color-scheme: dark;

  /* Cores de Superfície: Grafite Frio ("Noite") */
  --bg: #0e1014;            /* ink-950: trilho, base e janela */
  --surface: #14171c;       /* ink-900: barra de canais e modais */
  --surface-card: #1a1d23;  /* ink-850: área principal de conteúdo */
  --surface-raised: #1f232a;/* ink-800: cards, divisores e painéis elevados */
  --surface-hover: #252a32; /* ink-750: hover em áreas interativas */
  --surface-action: #2c313a;/* ink-700: botões secundários */
  --border: #2c313a;        /* ink-700 */
  --border-subtle: #1f232a; /* ink-800 */

  /* Destaque Canônico: Ciano Triscord (claro, com texto escuro por cima) */
  --brand: #22c8e8;         /* brand-400 */
  --brand-hover: #7fe3f5;   /* brand-300 */
  --brand-pressed: #0fa8c8; /* brand-500 */
  --brand-text: #0e1014;    /* ink-950 */
  --brand-muted: rgba(34, 200, 232, 0.12);

  /* Texto Frio */
  --text: #d5dae1;          /* ink-200 */
  --strong: #ffffff;        /* ink-50 */
  --muted: #959eaa;         /* ink-500 */

  /* Estados Fixos */
  --positive: #23a55a;      /* fala e online */
  --warning: #f0b232;       /* ausente/atenção */
  --critical: #d93a40;      /* erro/destrutivo */
  --critical-fg: #ff8a8f;

  /* Forma e Tipografia */
  --radius-sm: 6px;
  --radius: 8px;            /* raio padrão */
  --radius-lg: 12px;        /* cards e tiles */
  --radius-xl: 16px;        /* servidores e pill */
  --font-display: "Segoe UI Variable Display", "Segoe UI", system-ui, -apple-system, sans-serif;
  --font-sans: "Segoe UI Variable Text", "Segoe UI", system-ui, -apple-system, sans-serif;
  --font-mono: "Cascadia Code", "JetBrains Mono", Consolas, monospace;

  /* Movimento */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --dur-fast: 150ms;
  --dur-base: 220ms;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  background-color: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a { color: var(--brand); text-decoration: none; transition: color var(--dur-fast); }
a:hover { color: var(--brand-hover); }

.container {
  width: min(1140px, 100% - 40px);
  margin-inline: auto;
}

/* ==========================================================================
   Header & Navegação
   ========================================================================== */
.header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(14, 16, 20, 0.88);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-subtle);
}

.header .container {
  display: flex;
  align-items: center;
  height: 64px;
  gap: 32px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--strong);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 19px;
  letter-spacing: -0.01em;
  text-decoration: none;
}
.brand img { width: 28px; height: 28px; border-radius: var(--radius-sm); }

.nav {
  display: flex;
  align-items: center;
  gap: 24px;
  margin-right: auto;
}

.nav a {
  color: var(--muted);
  font-size: 14px;
  font-weight: 500;
}
.nav a:hover, .nav a[aria-current="page"] {
  color: var(--strong);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* ==========================================================================
   Botões do Open Design (Contraste estrito)
   ========================================================================== */
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 42px;
  padding: 0 20px;
  border-radius: var(--radius);
  border: 1px solid transparent;
  background: var(--brand);
  color: var(--brand-text);
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
  transition: background-color var(--dur-fast), transform var(--dur-fast), box-shadow var(--dur-fast);
  text-decoration: none;
}

.button:hover {
  background: var(--brand-hover);
  color: var(--brand-text);
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(34, 200, 232, 0.25);
}

.button:active {
  background: var(--brand-pressed);
  transform: translateY(0);
}

.button--secondary {
  background: var(--surface-raised);
  color: var(--text);
  border-color: var(--border);
}

.button--secondary:hover {
  background: var(--surface-hover);
  color: var(--strong);
  border-color: var(--border);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.35);
}

.button--small {
  height: 36px;
  padding: 0 16px;
  font-size: 13px;
}

.button svg { flex-shrink: 0; }

/* ==========================================================================
   Hero — Estúdio Noturno
   ========================================================================== */
.hero {
  position: relative;
  overflow: hidden;
  padding: 80px 0 100px;
  background: radial-gradient(ellipse 90% 50% at 50% -10%, rgba(34, 200, 232, 0.12), transparent 75%),
              linear-gradient(180deg, var(--bg) 0%, var(--surface) 100%);
  border-bottom: 1px solid var(--border-subtle);
}

.hero .container {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  align-items: center;
  gap: 48px;
}

.badge-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 4px 12px;
  border-radius: 999px;
  background: var(--brand-muted);
  border: 1px solid rgba(34, 200, 232, 0.3);
  color: var(--brand);
  font-size: 12px;
  font-family: var(--font-mono);
  font-weight: 500;
  margin-bottom: 20px;
}

.badge-pill .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--brand);
  box-shadow: 0 0 8px var(--brand);
}

.hero h1 {
  margin: 0 0 16px;
  color: var(--strong);
  font-family: var(--font-display);
  font-size: clamp(34px, 4.4vw, 54px);
  line-height: 1.1;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.hero p.lead {
  margin: 0 0 32px;
  max-width: 32em;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.6;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
}

.hero__meta {
  margin-top: 18px;
  color: var(--muted);
  font-size: 13px;
  font-family: var(--font-mono);
}

/* ==========================================================================
   Mockup Fiel do Triscord (Open Design em CSS puro)
   ========================================================================== */
.app-window {
  position: relative;
  aspect-ratio: 16 / 10;
  border-radius: var(--radius-lg);
  background: var(--surface-card);
  border: 1px solid var(--border);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.65), 0 0 0 1px rgba(255, 255, 255, 0.05);
  display: grid;
  grid-template-columns: 56px 140px 1fr;
  overflow: hidden;
}

/* Trilho de servidores (72px scaled) */
.rail {
  background: var(--bg);
  border-right: 1px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  padding-top: 14px;
}

.rail-item {
  position: relative;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-lg);
  background: var(--surface-raised);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text);
  font-size: 13px;
  font-weight: 700;
}

.rail-item.active {
  background: var(--brand);
  color: var(--brand-text);
  border-radius: var(--radius-sm);
}

.rail-item.active::before {
  content: "";
  position: absolute;
  left: -10px;
  top: 50%;
  transform: translateY(-50%);
  width: 4px;
  height: 24px;
  border-radius: 0 4px 4px 0;
  background: var(--brand);
}

/* Canais */
.channel-pane {
  background: var(--surface);
  border-right: 1px solid var(--border-subtle);
  padding: 12px 8px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.pane-header {
  height: 14px;
  width: 70%;
  border-radius: var(--radius-sm);
  background: var(--surface-action);
  margin-bottom: 12px;
}

.chan-item {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 8px;
  border-radius: var(--radius-sm);
  font-size: 11px;
  font-weight: 500;
  color: var(--muted);
}

.chan-item.active {
  background: var(--surface-hover);
  color: var(--strong);
}

.chan-item svg { width: 12px; height: 12px; opacity: 0.7; }

/* Palco de Chamada */
.stage {
  background: var(--surface-card);
  padding: 12px;
  display: grid;
  grid-template-rows: 1fr auto;
  gap: 10px;
}

.tiles-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: 1fr;
  gap: 8px;
}

.tile {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
}

.tile.speaking {
  border-color: var(--positive);
  box-shadow: 0 0 0 1px var(--positive);
}

.tile-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: #2f6f8f;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 14px;
  color: #fff;
}

.tile-tag {
  position: absolute;
  left: 8px;
  bottom: 8px;
  background: rgba(14, 16, 20, 0.75);
  backdrop-filter: blur(4px);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  font-size: 10px;
  display: flex;
  align-items: center;
  gap: 4px;
}

.tri-bars {
  display: inline-flex;
  align-items: flex-end;
  gap: 1.5px;
  height: 10px;
}

.tri-bars span {
  width: 2px;
  background: var(--positive);
  border-radius: 1px;
  animation: equalize 1s infinite alternate ease-in-out;
}
.tri-bars span:nth-child(1) { height: 6px; animation-delay: 0.1s; }
.tri-bars span:nth-child(2) { height: 10px; animation-delay: 0.3s; }
.tri-bars span:nth-child(3) { height: 4px; animation-delay: 0.2s; }

@keyframes equalize {
  to { height: 2px; }
}

.stream-tile {
  grid-column: span 1;
  background: linear-gradient(135deg, #102636, #0e1014);
  position: relative;
}

.live-badge {
  position: absolute;
  top: 8px;
  left: 8px;
  background: var(--brand);
  color: var(--brand-text);
  font-size: 9px;
  font-weight: 700;
  padding: 1px 5px;
  border-radius: 3px;
  letter-spacing: 0.04em;
}

/* Barra de controles */
.stage-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
  padding: 6px;
}

.stage-btn {
  width: 28px;
  height: 28px;
  border-radius: var(--radius-sm);
  background: var(--surface-raised);
  display: grid;
  place-items: center;
}

.stage-btn.leave {
  background: var(--critical);
}

/* ==========================================================================
   Seções & Recursos
   ========================================================================== */
section { padding: 96px 0; }

.section-title {
  margin: 0 0 12px;
  color: var(--strong);
  font-family: var(--font-display);
  font-size: clamp(26px, 3.2vw, 38px);
  line-height: 1.15;
  font-weight: 800;
  letter-spacing: -0.01em;
}

.section-lead {
  margin: 0 0 48px;
  max-width: 42em;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.6;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.feature-card {
  padding: 28px;
  border-radius: var(--radius-lg);
  background: var(--surface);
  border: 1px solid var(--border-subtle);
  transition: transform var(--dur-fast), border-color var(--dur-fast), background-color var(--dur-fast);
}

.feature-card:hover {
  transform: translateY(-2px);
  border-color: rgba(34, 200, 232, 0.35);
  background: var(--surface-card);
}

.feature-icon {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  margin-bottom: 20px;
  border-radius: var(--radius);
  background: var(--brand-muted);
  color: var(--brand);
}

.feature-card h3 {
  margin: 0 0 8px;
  color: var(--strong);
  font-size: 17px;
  font-weight: 700;
}

.feature-card p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.55;
}

/* ==========================================================================
   Área de Download
   ========================================================================== */
.download-section {
  background: radial-gradient(ellipse 80% 40% at 50% 0%, rgba(34, 200, 232, 0.08), transparent 70%),
              var(--surface);
  border-top: 1px solid var(--border-subtle);
}

.download-box {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 40px;
  padding: 44px;
  border-radius: var(--radius-lg);
  background: var(--surface-card);
  border: 1px solid var(--border);
}

.steps-list {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: step;
}

.steps-list li {
  position: relative;
  margin: 0 0 20px;
  padding-left: 44px;
  font-size: 15px;
  color: var(--text);
}

.steps-list li::before {
  counter-increment: step;
  content: counter(step);
  position: absolute;
  left: 0;
  top: 0;
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--brand);
  color: var(--brand-text);
  font-weight: 700;
  font-size: 13px;
  font-family: var(--font-mono);
}

.steps-list strong { color: var(--strong); }

.notice-box {
  margin-top: 24px;
  padding: 14px 18px;
  border-radius: var(--radius);
  background: rgba(240, 178, 50, 0.08);
  border: 1px solid rgba(240, 178, 50, 0.25);
  color: #e8c77a;
  font-size: 13px;
  line-height: 1.5;
}

.tech-facts {
  margin: 24px 0 0;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 8px 16px;
  font-size: 13px;
  font-family: var(--font-mono);
  color: var(--muted);
}

.tech-facts dt { color: var(--text); }
.tech-facts dd { margin: 0; overflow-wrap: anywhere; }

code {
  padding: 2px 6px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg);
  font-family: var(--font-mono);
  font-size: 12px;
}

/* ==========================================================================
   Páginas de Texto (Termos & Privacidade)
   ========================================================================== */
.page { padding: 64px 0 60px; }
.page .container { max-width: 760px; }
.page h1 {
  margin: 0 0 10px;
  color: var(--strong);
  font-family: var(--font-display);
  font-size: clamp(30px, 3.8vw, 42px);
  font-weight: 800;
  letter-spacing: -0.01em;
}
.page h2 { margin: 2.2em 0 0.6em; color: var(--strong); font-size: 20px; font-weight: 700; }
.page .lead { color: var(--muted); font-size: 15px; margin-bottom: 28px; }
.page p, .page li { color: var(--text); font-size: 15px; line-height: 1.65; }

/* ==========================================================================
   Rodapé
   ========================================================================== */
.footer {
  padding: 40px 0 52px;
  border-top: 1px solid var(--border-subtle);
  background: var(--bg);
  color: var(--muted);
  font-size: 13px;
}

.footer .container {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.footer nav { display: flex; gap: 20px; }
.footer a { color: var(--muted); font-size: 13px; }
.footer a:hover { color: var(--strong); }

/* ==========================================================================
   Responsividade
   ========================================================================== */
@media (max-width: 960px) {
  .hero .container, .download-box { grid-template-columns: 1fr; }
  .features-grid { grid-template-columns: 1fr 1fr; }
  .app-window { max-width: 580px; }
}

@media (max-width: 640px) {
  .nav { display: none; }
  .features-grid { grid-template-columns: 1fr; }
  section { padding: 64px 0; }
  .download-box { padding: 24px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .button:hover, .feature-card:hover { transform: none; }
  .tri-bars span { animation: none; }
}