/* ══════════════════════════════════════
   CONVERSOR DE UNIDADES — Estilos locais
   ══════════════════════════════════════ */

:root {
  --conv-accent:     #0f766e;
  --conv-accent-dim: #0d5f5a;
  --conv-accent-bg:  rgba(15, 118, 110, 0.07);
  --conv-border:     #e2e8f0;
  --conv-border2:    #f1f5f9;
  --conv-surface:    #ffffff;
  --conv-bg:         #f8fafc;
  --conv-text:       #0f172a;
  --conv-text2:      #475569;
  --conv-text3:      #94a3b8;
  --conv-mono:       'IBM Plex Mono', monospace;
  --conv-sans:       'IBM Plex Sans', sans-serif;
  --conv-radius:     6px;
  --conv-shadow:     0 1px 3px rgba(0,0,0,0.07), 0 4px 16px rgba(0,0,0,0.05);
  --conv-del:        #ef4444;
  --conv-del-bg:     rgba(239,68,68,0.08);
}

/* ── HEADER ── */
.conv-header {
  background: var(--conv-accent);
  border-bottom: 3px solid #f59e0b;
  padding: 0 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 56px;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.conv-header-logo-link {
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  transition: opacity 0.2s;
  color: inherit;
}
.conv-header-logo-link:hover { opacity: 0.85; }

.conv-header-logo {
  height: 44px;
  width: auto;
  display: block;
}

.conv-header-title {
  font-family: 'Playfair Display', 'IBM Plex Sans', serif;
  color: #fff;
  font-size: 1.1rem;
  letter-spacing: 0.01em;
  display: flex;
  flex-direction: column;
}
.conv-header-title span {
  font-family: var(--conv-mono);
  color: #f59e0b;
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-top: -2px;
}

.conv-header-badges {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.conv-header-badge {
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.22);
  color: rgba(255,255,255,0.85);
  font-family: var(--conv-mono);
  font-size: 0.68rem;
  padding: 3px 10px;
  border-radius: 2px;
  letter-spacing: 0.08em;
}

/* ── LAYOUT ── */
.conv-layout {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 1.5rem;
  max-width: 1100px;
  margin: 0 auto;
  padding: 2rem 0 3rem;
}

.conv-col-main {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

/* ── CARDS ── */
.conv-card {
  background: var(--conv-surface);
  border: 1px solid var(--conv-border);
  border-radius: var(--conv-radius);
  padding: 1.5rem;
  box-shadow: var(--conv-shadow);
}

.conv-card-title {
  font-family: var(--conv-sans);
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--conv-text);
  margin: 0 0 0.2rem;
}

.conv-card-desc {
  font-family: var(--conv-sans);
  font-size: 0.82rem;
  color: var(--conv-text2);
  margin: 0 0 1.25rem;
  line-height: 1.5;
}

.conv-divider {
  border: none;
  border-top: 1px solid var(--conv-border2);
  margin: 1.25rem 0;
}

/* ── FIELDS ── */
.conv-field {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  margin-bottom: 0.9rem;
}

.conv-field label {
  font-family: var(--conv-mono);
  font-size: 0.68rem;
  font-weight: 600;
  color: var(--conv-text2);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.conv-field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}

/* ── INPUTS & SELECTS ── */
.conv-card input[type="text"],
.conv-card input[type="number"],
.conv-card select {
  width: 100%;
  font-family: var(--conv-mono);
  font-size: 0.85rem;
  padding: 0.5rem 0.65rem;
  border: 1px solid var(--conv-border);
  border-radius: var(--conv-radius);
  background: var(--conv-bg);
  color: var(--conv-text);
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
  -webkit-appearance: none;
}

.conv-card input:focus,
.conv-card select:focus {
  border-color: var(--conv-accent);
  box-shadow: 0 0 0 2px rgba(15,118,110,0.14);
  background: #fff;
}

/* ── BUTTONS ── */
.conv-btn-primary {
  width: 100%;
  padding: 0.6rem 1rem;
  background: var(--conv-accent);
  color: #fff;
  border: none;
  border-radius: var(--conv-radius);
  font-family: var(--conv-mono);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background 0.15s, transform 0.1s;
}
.conv-btn-primary:hover  { background: var(--conv-accent-dim); }
.conv-btn-primary:active { transform: translateY(1px); }

.conv-btn-secondary {
  width: 100%;
  padding: 0.55rem 1rem;
  background: transparent;
  color: var(--conv-accent);
  border: 1px solid var(--conv-accent);
  border-radius: var(--conv-radius);
  font-family: var(--conv-mono);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  cursor: pointer;
  transition: all 0.15s;
}
.conv-btn-secondary:hover {
  background: var(--conv-accent-bg);
}

/* ── RESULTADO ── */
.conv-resultado {
  margin-top: 0.9rem;
  font-family: var(--conv-mono);
  font-size: 0.9rem;
  color: var(--conv-accent);
  background: var(--conv-accent-bg);
  border-radius: var(--conv-radius);
  padding: 0.65rem 0.85rem;
  line-height: 1.6;
  min-height: 2.6rem;
  word-break: break-word;
}
.conv-resultado:empty { display: none; }

/* ── HINT ── */
.conv-hint {
  font-family: var(--conv-mono);
  font-size: 0.72rem;
  color: var(--conv-text3);
  margin-top: -0.5rem;
  margin-bottom: 0.9rem;
}

/* ── MENSAGEM ── */
.conv-mensagem {
  font-family: var(--conv-mono);
  font-size: 0.75rem;
  margin-top: 0.5rem;
  min-height: 1.2em;
  border-radius: var(--conv-radius);
  padding: 0.4rem 0.6rem;
}
.conv-mensagem:empty { padding: 0; }
.conv-mensagem.sucesso { color: var(--conv-accent); background: var(--conv-accent-bg); }
.conv-mensagem.erro    { color: var(--conv-del); background: var(--conv-del-bg); }

/* ── COMPOUND BUILDER ── */
.comp-section { display: flex; flex-direction: column; gap: 0.75rem; }
.comp-section[hidden] { display: none; }

.comp-from-to {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: start;
  gap: 0.75rem;
}

.comp-side {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.comp-side-label {
  font-family: var(--conv-mono);
  font-size: 0.68rem;
  font-weight: 600;
  color: var(--conv-text2);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.comp-arrow {
  font-size: 1.1rem;
  color: var(--conv-text3);
  padding-top: 1.6rem;
  text-align: center;
}

.comp-row {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.comp-op {
  font-family: var(--conv-mono);
  font-size: 0.9rem;
  color: var(--conv-text2);
  flex-shrink: 0;
}

.comp-row select {
  flex: 1;
  min-width: 0;
}

/* ── CUSTOM UNITS LIST ── */
.custom-lista {
  margin-top: 0.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.custom-lista-vazia {
  font-family: var(--conv-mono);
  font-size: 0.72rem;
  color: var(--conv-text3);
  padding: 0.5rem 0;
}

.custom-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  padding: 0.45rem 0.6rem;
  border-radius: 4px;
  background: var(--conv-bg);
  border: 1px solid var(--conv-border2);
}

.custom-item-info {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
  min-width: 0;
}

.custom-item-nome {
  font-family: var(--conv-mono);
  font-size: 0.75rem;
  color: var(--conv-text);
  font-weight: 600;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.custom-item-fator {
  font-family: var(--conv-mono);
  font-size: 0.68rem;
  color: var(--conv-text2);
}

.custom-item-del {
  flex-shrink: 0;
  background: none;
  border: none;
  color: var(--conv-text3);
  font-size: 0.85rem;
  cursor: pointer;
  padding: 2px 5px;
  border-radius: 3px;
  line-height: 1;
  transition: color 0.15s, background 0.15s;
}
.custom-item-del:hover {
  color: var(--conv-del);
  background: var(--conv-del-bg);
}

/* ── CUSTOM LISTA HEADER ── */
.custom-lista-header {
  font-family: var(--conv-mono);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--conv-text2);
  margin-bottom: 0.2rem;
}

/* ── RESPONSIVE ── */
@media (max-width: 900px) {
  .conv-layout {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .conv-header { padding: 0 1rem; height: auto; min-height: 56px; }
  .conv-header-logo { height: 36px; }
}

@media (max-width: 600px) {
  .conv-field-row {
    grid-template-columns: 1fr;
  }
  .comp-from-to {
    grid-template-columns: 1fr;
  }
  .comp-arrow {
    padding-top: 0;
    text-align: left;
  }
}