:root {
  --bg-dark: #07150e;
  --bg-card: #0f241a;
  --bg-card-alt: #143224;
  --border: #1a4230;
  --primary: #10b981;
  --primary-light: #34d399;
  --accent: #38bdf8;
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --wa-bg: #0b141a;
  --wa-in: #202c33;
  --wa-out: #005c4b;
  --wa-accent: #25d366;
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: ui-monospace, 'Cascadia Code', 'Source Code Pro', Menlo, Consolas, monospace;
}

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

body {
  background-color: var(--bg-dark);
  color: var(--text-main);
  font-family: var(--font-sans);
  line-height: 1.6;
  padding: 0;
  overflow-x: hidden;
}

a {
  color: var(--primary-light);
  text-decoration: none;
  transition: color 0.2s;
}

a:hover, a:focus {
  color: var(--accent);
  text-decoration: underline;
}

.container {
  max-width: 1040px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Header & Hero */
header.hero {
  padding: 60px 0 40px;
  border-bottom: 1px solid var(--border);
  background: radial-gradient(circle at 50% 20%, rgba(16, 185, 129, 0.12) 0%, transparent 70%);
  text-align: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: rgba(16, 185, 129, 0.15);
  border: 1px solid var(--primary);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--primary-light);
  font-weight: 700;
  margin-bottom: 24px;
}

.hero-logo-img {
  width: 130px;
  height: 130px;
  display: block;
  margin: 0 auto 20px;
  filter: drop-shadow(0 10px 20px rgba(16, 185, 129, 0.3));
}

h1.hero-title {
  font-size: 3.2rem;
  font-weight: 900;
  letter-spacing: 2px;
  margin-bottom: 8px;
  background: linear-gradient(135deg, #ffffff 40%, var(--primary-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-pronunciation {
  font-size: 1.15rem;
  color: var(--primary-light);
  font-weight: 700;
  margin-bottom: 16px;
}

.hero-tagline {
  font-size: 1.25rem;
  color: var(--text-muted);
  max-width: 680px;
  margin: 0 auto 30px;
}

.hero-actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 8px;
  font-weight: 700;
  font-size: 1rem;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-primary {
  background: var(--primary);
  color: #022c22;
  border: 1px solid var(--primary-light);
}

.btn-primary:hover {
  background: var(--primary-light);
  color: #022c22;
  text-decoration: none;
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  color: var(--text-main);
  border: 1px solid var(--border);
}

.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary-light);
  text-decoration: none;
}

/* Sections */
section {
  padding: 60px 0;
  border-bottom: 1px solid var(--border);
}

h2.section-title {
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 12px;
  text-align: center;
}

p.section-subtitle {
  text-align: center;
  color: var(--text-muted);
  font-size: 1.1rem;
  max-width: 700px;
  margin: 0 auto 40px;
}

/* Mockups de Chat WhatsApp */
.mockup-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 28px;
  margin-top: 30px;
}

.mockup-card {
  background: var(--wa-bg);
  border: 1px solid #1f2c34;
  border-radius: 18px;
  overflow: hidden;
  box-shadow: 0 15px 35px rgba(0,0,0,0.4);
  display: flex;
  flex-direction: column;
}

.mockup-header {
  background: #202c33;
  padding: 14px 18px;
  display: flex;
  align-items: center;
  gap: 12px;
  border-bottom: 1px solid #111b21;
}

.mockup-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: #0f3824;
  border: 1px solid var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  color: var(--primary-light);
}

.mockup-header-info h3 {
  font-size: 0.95rem;
  font-weight: 700;
  color: #e9edef;
}

.mockup-header-info span {
  font-size: 0.75rem;
  color: #8696a0;
}

.mockup-body {
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  flex-grow: 1;
}

.chat-bubble {
  padding: 10px 14px;
  border-radius: 12px;
  font-size: 0.92rem;
  max-width: 90%;
  line-height: 1.45;
  position: relative;
}

.chat-bubble.out {
  background: var(--wa-out);
  color: #e9edef;
  align-self: flex-end;
  border-bottom-right-radius: 4px;
}

.chat-bubble.in {
  background: var(--wa-in);
  color: #e9edef;
  align-self: flex-start;
  border-bottom-left-radius: 4px;
}

.audio-bubble {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 6px 4px;
}

.play-btn {
  width: 36px;
  height: 36px;
  background: #10b981;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #06150e;
  font-size: 14px;
  flex-shrink: 0;
}

.audio-waves {
  display: flex;
  align-items: center;
  gap: 3px;
  height: 24px;
  flex-grow: 1;
}

.audio-bar {
  width: 3px;
  background: #8696a0;
  border-radius: 2px;
}

.quoted-block {
  background: rgba(0,0,0,0.25);
  border-left: 4px solid var(--primary);
  padding: 6px 10px;
  border-radius: 4px;
  margin-bottom: 8px;
  font-size: 0.8rem;
  color: #aebac1;
}

.mockup-footer-desc {
  background: #111b21;
  padding: 12px 16px;
  font-size: 0.85rem;
  color: #8696a0;
  border-top: 1px solid #1f2c34;
}

/* Cards de Pilares & Comandos */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 24px;
  transition: transform 0.2s, border-color 0.2s;
}

.feature-card:hover {
  transform: translateY(-4px);
  border-color: var(--primary);
}

.feature-icon {
  font-size: 2rem;
  margin-bottom: 14px;
  display: inline-block;
}

.feature-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: #f1f5f9;
}

.feature-desc {
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* Tabela de Comandos */
.table-wrapper {
  overflow-x: auto;
  margin-top: 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
}

table.cmd-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.95rem;
}

table.cmd-table th, table.cmd-table td {
  padding: 14px 18px;
  border-bottom: 1px solid var(--border);
}

table.cmd-table th {
  background: rgba(16, 185, 129, 0.08);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--primary-light);
  text-transform: uppercase;
  letter-spacing: 1px;
}

table.cmd-table tr:last-child td {
  border-bottom: none;
}

code {
  font-family: var(--font-mono);
  background: rgba(0, 0, 0, 0.4);
  color: var(--primary-light);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.9em;
  border: 1px solid rgba(16, 185, 129, 0.2);
}

/* Footer */
footer {
  padding: 40px 0;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.9rem;
}

footer p {
  margin-bottom: 8px;
}

@media (max-width: 640px) {
  h1.hero-title { font-size: 2.3rem; }
  .mockup-grid { grid-template-columns: 1fr; }
}