/* styles.css — CNPJ Generator
   Tema claro/escuro via [data-theme] em <html>.
   Layout em cartões, responsivo (mobile-first). */

:root {
  --radius: 12px;
  --radius-sm: 8px;
  --maxw: 720px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica,
    Arial, sans-serif;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  --transition: 0.2s ease;
}

/* ---- Paleta: tema escuro (padrão) ---- */
:root,
[data-theme="dark"] {
  --bg: #0f1419;
  --bg-elev: #1a212b;
  --card: #161d26;
  --border: #283341;
  --text: #e6edf3;
  --text-muted: #8b98a8;
  --primary: #2f9e6f;
  --primary-hover: #36b07d;
  --primary-text: #ffffff;
  --btn-bg: #232c38;
  --btn-hover: #2c3744;
  --shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
}

/* ---- Paleta: tema claro ---- */
[data-theme="light"] {
  --bg: #f3f5f7;
  --bg-elev: #ffffff;
  --card: #ffffff;
  --border: #e2e8f0;
  --text: #1a2330;
  --text-muted: #6b7785;
  --primary: #1f9d63;
  --primary-hover: #178551;
  --primary-text: #ffffff;
  --btn-bg: #eef1f5;
  --btn-hover: #e2e7ee;
  --shadow: 0 8px 24px rgba(15, 30, 50, 0.08);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: background var(--transition), color var(--transition);
}

.container {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 16px;
}

/* ---- Header ---- */
.site-header {
  background: var(--bg-elev);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: 18px;
}

.brand-logo {
  background: var(--primary);
  color: var(--primary-text);
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  letter-spacing: 0.5px;
}

.brand-name {
  color: var(--text-muted);
  font-weight: 600;
}

.theme-toggle {
  background: var(--btn-bg);
  border: 1px solid var(--border);
  color: var(--text);
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 18px;
  display: grid;
  place-items: center;
  transition: background var(--transition);
}

.theme-toggle:hover {
  background: var(--btn-hover);
}

/* ---- Main / Cards ---- */
.main {
  flex: 1;
  padding-top: 24px;
  padding-bottom: 40px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 24px;
}

.title {
  margin: 0 0 8px;
  font-size: 24px;
}

.subtitle {
  margin: 0 0 20px;
  color: var(--text-muted);
  font-size: 14px;
}

.section-title {
  margin: 0;
  font-size: 18px;
}

.card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

/* ---- Controles ---- */
.controls {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  margin-bottom: 20px;
}

.control-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.control-group label,
.control-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-muted);
}

#quantity {
  width: 120px;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-elev);
  color: var(--text);
  font-size: 15px;
}

#quantity:focus {
  outline: 2px solid var(--primary);
  outline-offset: 1px;
}

/* Segmented control para formato */
.segmented {
  display: inline-flex;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--bg-elev);
}

.segment {
  position: relative;
  cursor: pointer;
}

.segment input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.segment span {
  display: block;
  padding: 10px 14px;
  font-size: 13px;
  font-family: var(--mono);
  color: var(--text-muted);
  transition: background var(--transition), color var(--transition);
  white-space: nowrap;
}

.segment input:checked + span {
  background: var(--primary);
  color: var(--primary-text);
}

.segment input:focus-visible + span {
  outline: 2px solid var(--primary);
  outline-offset: -2px;
}

/* Checkbox de opção */
.checkbox {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  font-size: 14px;
  color: var(--text);
  user-select: none;
}

.checkbox input {
  width: 16px;
  height: 16px;
  accent-color: var(--primary);
  cursor: pointer;
}

/* ---- Botões ---- */
.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 20px;
}

.btn {
  appearance: none;
  border: 1px solid var(--border);
  background: var(--btn-bg);
  color: var(--text);
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--transition), transform var(--transition);
}

.btn:hover {
  background: var(--btn-hover);
}

.btn:active {
  transform: translateY(1px);
}

.btn-primary {
  background: var(--primary);
  border-color: var(--primary);
  color: var(--primary-text);
}

.btn-primary:hover {
  background: var(--primary-hover);
}

.btn-ghost {
  background: transparent;
}

.btn-sm {
  padding: 6px 12px;
  font-size: 13px;
}

/* ---- Resultados ---- */
.results,
.history {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.result-item,
.history-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 14px;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}

.result-value,
.history-value {
  font-family: var(--mono);
  font-size: 15px;
  word-break: break-all;
}

.history-value {
  color: var(--text-muted);
  font-size: 14px;
}

/* ---- Lista de API ---- */
.api-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.api-list li {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  padding: 10px 14px;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}

.api-list code,
code {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--primary);
  background: rgba(47, 158, 111, 0.12);
  padding: 2px 6px;
  border-radius: 6px;
}

/* ---- Texto auxiliar ---- */
.muted {
  color: var(--text-muted);
}


.small {
  font-size: 13px;
}

.history-empty {
  font-size: 14px;
  margin: 4px 0 0;
}

/* ---- Footer ---- */
.site-footer {
  border-top: 1px solid var(--border);
  background: var(--bg-elev);
  padding: 16px 0;
  text-align: center;
}

.site-footer p {
  margin: 0;
}

/* ---- Toast ---- */
.toast {
  position: fixed;
  left: 50%;
  bottom: 24px;
  transform: translateX(-50%) translateY(20px);
  background: var(--primary);
  color: var(--primary-text);
  padding: 12px 20px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 600;
  box-shadow: var(--shadow);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition), transform var(--transition);
  z-index: 100;
}

.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ---- Responsivo ---- */
@media (max-width: 520px) {
  .card {
    padding: 18px;
  }

  .controls {
    flex-direction: column;
    gap: 16px;
  }

  .segmented {
    width: 100%;
  }

  .segment {
    flex: 1;
  }

  .segment span {
    text-align: center;
    font-size: 12px;
    padding: 10px 8px;
  }

  .actions .btn {
    flex: 1 1 calc(50% - 5px);
  }

  .title {
    font-size: 20px;
  }
}
