/* =====================================================
   LIQUIDADOR DE SANCIONES DIAN — CSS
   Diseño profesional tributario colombiano
   ===================================================== */

@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Sans:wght@400;500;600;700&family=IBM+Plex+Mono:wght@400;500&display=swap');

:root {
  --dian-azul:        #003087;
  --dian-azul-mid:    #0052CC;
  --dian-azul-light:  #E8F0FE;
  --dian-oro:         #F5A623;
  --dian-oro-dark:    #D4891A;
  --dian-verde:       #006B3C;
  --dian-verde-light: #E6F4EE;
  --dian-rojo:        #C0392B;
  --dian-rojo-light:  #FDECEA;
  --dian-gris-100:    #F7F8FA;
  --dian-gris-200:    #EAECF0;
  --dian-gris-400:    #9BA3AF;
  --dian-gris-700:    #374151;
  --dian-gris-900:    #111827;
  --dian-white:       #FFFFFF;
  --dian-radius:      10px;
  --dian-shadow:      0 2px 16px rgba(0,48,135,0.10);
  --dian-font:        'IBM Plex Sans', sans-serif;
  --dian-mono:        'IBM Plex Mono', monospace;
}

/* CONTAINER */
.dian-liq-container {
  font-family: var(--dian-font);
  max-width: 860px;
  margin: 0 auto 2rem;
  background: var(--dian-white);
  border-radius: 14px;
  box-shadow: var(--dian-shadow);
  overflow: hidden;
  border: 1px solid var(--dian-gris-200);
}

/* HEADER */
.dian-liq-header {
  background: linear-gradient(135deg, var(--dian-azul) 0%, #00205C 100%);
  padding: 1.4rem 1.8rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  position: relative;
  overflow: hidden;
}
.dian-liq-header::after {
  content: '';
  position: absolute;
  right: -30px; top: -30px;
  width: 140px; height: 140px;
  border-radius: 50%;
  background: rgba(245,166,35,0.12);
}
.dian-liq-logo svg {
  width: 44px; height: 44px;
  flex-shrink: 0;
  filter: drop-shadow(0 2px 6px rgba(0,0,0,0.25));
}
.dian-liq-header-text h2 {
  color: var(--dian-white);
  font-size: 1.15rem;
  font-weight: 700;
  margin: 0 0 2px;
  letter-spacing: -0.01em;
}
.dian-liq-header-text p {
  color: rgba(255,255,255,0.65);
  font-size: 0.78rem;
  margin: 0;
  font-family: var(--dian-mono);
}

/* TABS */
.dian-liq-tabs {
  display: flex;
  background: var(--dian-gris-100);
  border-bottom: 2px solid var(--dian-gris-200);
  overflow-x: auto;
  scrollbar-width: none;
}
.dian-liq-tabs::-webkit-scrollbar { display: none; }

.dian-tab {
  flex: 1;
  min-width: 130px;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 0.8rem 0.6rem 0.7rem;
  border: none;
  background: transparent;
  cursor: pointer;
  border-bottom: 3px solid transparent;
  transition: all 0.18s ease;
  position: relative;
  bottom: -2px;
  font-family: var(--dian-font);
}
.dian-tab:hover {
  background: var(--dian-azul-light);
}
.dian-tab.active {
  background: var(--dian-white);
  border-bottom-color: var(--dian-azul);
}
.tab-icon { font-size: 1.2rem; margin-bottom: 3px; }
.tab-label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--dian-gris-700);
  white-space: nowrap;
}
.dian-tab.active .tab-label { color: var(--dian-azul); }
.tab-art {
  font-size: 0.68rem;
  color: var(--dian-gris-400);
  font-family: var(--dian-mono);
  margin-top: 1px;
}

/* PANELS */
.dian-liq-panels { padding: 1.6rem 1.8rem; }
.dian-panel { display: none; }
.dian-panel.active { display: block; }

/* FORM */
.dian-form-intro {
  background: var(--dian-azul-light);
  border-left: 4px solid var(--dian-azul);
  border-radius: 0 8px 8px 0;
  padding: 0.8rem 1rem;
  font-size: 0.85rem;
  color: var(--dian-gris-700);
  margin-bottom: 1.4rem;
  line-height: 1.5;
}

.dian-fields-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem 1.2rem;
  margin-bottom: 1.2rem;
}

.dian-field {
  display: flex;
  flex-direction: column;
  gap: 5px;
}
.dian-field-full {
  grid-column: 1 / -1;
}
.dian-field label {
  font-size: 0.80rem;
  font-weight: 600;
  color: var(--dian-gris-700);
  line-height: 1.3;
}
.dian-field input,
.dian-field select {
  padding: 0.5rem 0.7rem;
  border: 1.5px solid var(--dian-gris-200);
  border-radius: 7px;
  font-family: var(--dian-mono);
  font-size: 0.88rem;
  color: var(--dian-gris-900);
  background: var(--dian-white);
  transition: border-color 0.15s, box-shadow 0.15s;
  width: 100%;
  box-sizing: border-box;
}
.dian-field input:focus,
.dian-field select:focus {
  outline: none;
  border-color: var(--dian-azul-mid);
  box-shadow: 0 0 0 3px rgba(0,82,204,0.12);
}

/* SECCIÓN */
.dian-section {
  background: var(--dian-gris-100);
  border: 1px solid var(--dian-gris-200);
  border-radius: var(--dian-radius);
  padding: 1rem 1.2rem;
  margin-bottom: 1rem;
}
.dian-section-title {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--dian-azul);
  margin-bottom: 0.9rem;
}
.section-num {
  background: var(--dian-azul);
  color: var(--dian-white);
  width: 22px; height: 22px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.75rem;
  font-weight: 700;
  flex-shrink: 0;
}

/* BOTÓN CALCULAR */
.dian-btn-calcular {
  display: block;
  width: 100%;
  padding: 0.9rem;
  background: linear-gradient(135deg, var(--dian-azul) 0%, var(--dian-azul-mid) 100%);
  color: var(--dian-white);
  font-family: var(--dian-font);
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  border: none;
  border-radius: var(--dian-radius);
  cursor: pointer;
  margin-top: 0.4rem;
  transition: opacity 0.15s, transform 0.1s;
}
.dian-btn-calcular:hover { opacity: 0.92; transform: translateY(-1px); }
.dian-btn-calcular:active { transform: translateY(0); }

/* RESULTADO */
.dian-resultado {
  margin-top: 1.4rem;
  border: 1.5px solid var(--dian-verde);
  border-radius: var(--dian-radius);
  overflow: hidden;
  animation: fadeInUp 0.3s ease;
}
@keyframes fadeInUp {
  from { opacity:0; transform: translateY(10px); }
  to   { opacity:1; transform: translateY(0); }
}
.dian-resultado h3 {
  background: var(--dian-verde);
  color: var(--dian-white);
  margin: 0;
  padding: 0.7rem 1.2rem;
  font-size: 0.90rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}
.dian-resultado-grid {
  padding: 1rem 1.2rem;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.4rem 1.2rem;
  font-size: 0.84rem;
}
.dian-resultado-grid .row-label { color: var(--dian-gris-700); }
.dian-resultado-grid .row-value {
  font-family: var(--dian-mono);
  font-weight: 600;
  color: var(--dian-gris-900);
  text-align: right;
}
.dian-resultado-grid .row-divider {
  grid-column: 1 / -1;
  height: 1px;
  background: var(--dian-gris-200);
  margin: 4px 0;
}
.dian-resultado-grid .row-warn {
  grid-column: 1 / -1;
  font-size: 0.78rem;
  color: var(--dian-rojo);
  background: var(--dian-rojo-light);
  padding: 4px 8px;
  border-radius: 5px;
  margin-top: 4px;
}

/* SANCIÓN FINAL */
.dian-sancion-final {
  background: var(--dian-verde-light);
  border-top: 1.5px solid var(--dian-verde);
  padding: 1rem 1.2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.dian-sancion-final .sf-label {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--dian-verde);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.dian-sancion-final .sf-value {
  font-family: var(--dian-mono);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--dian-verde);
}

/* FOOTER */
.dian-liq-footer {
  background: var(--dian-gris-100);
  border-top: 1px solid var(--dian-gris-200);
  padding: 0.8rem 1.8rem;
}
.dian-liq-footer p {
  font-size: 0.74rem;
  color: var(--dian-gris-400);
  margin: 2px 0;
  font-family: var(--dian-mono);
}

/* RESPONSIVE */
@media (max-width: 600px) {
  .dian-liq-panels { padding: 1.2rem 1rem; }
  .dian-fields-grid { grid-template-columns: 1fr; }
  .dian-field-full { grid-column: 1; }
  .dian-liq-header { padding: 1rem; }
  .dian-liq-header-text h2 { font-size: 1rem; }
  .dian-sancion-final .sf-value { font-size: 1.2rem; }
}