/* ============================================
   PANASONIC.CSS — Panasonic Welding Landing Page
   Estética: Japonesa minimalista-técnica
   Negro (#0A0A2E) + Dorado (#C4962C)
   ============================================ */

.pana-page {
  --pana-black: #0A0A2E;
  --pana-dark: #06061A;
  --pana-gold: #C4962C;
  --pana-gold-light: #D4A94A;
  --pana-gold-dark: #9E7823;
  --pana-white: #FFFFFF;
  --pana-gray: rgba(255, 255, 255, 0.5);

  background-color: var(--pana-dark);
  color: var(--pana-white);
}

/* ==========================================
   COMPONENTES REUTILIZABLES
   ========================================== */

.pana-label {
  display: inline-block;
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.25em;
  color: var(--pana-gold);
  margin-bottom: var(--space-4);
}

.pana-label--light {
  color: var(--pana-gray);
}

.pana-section-title {
  font-size: clamp(var(--font-size-2xl), 4vw, var(--font-size-4xl));
  font-weight: var(--font-weight-bold);
  color: var(--pana-white);
  margin-bottom: var(--space-4);
  line-height: var(--line-height-tight);
}

.pana-section-sub {
  font-size: var(--font-size-base);
  color: var(--pana-gray);
  max-width: 640px;
  margin-bottom: var(--space-8);
  line-height: var(--line-height-relaxed);
}

/* Botones Panasonic */
.pana-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  min-height: 48px;
  padding: var(--space-3) var(--space-6);
  font-family: var(--font-family-base);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition-base);
  white-space: nowrap;
}

.pana-btn--gold {
  background-color: var(--pana-gold);
  color: var(--pana-dark);
  border-color: var(--pana-gold);
}

.pana-btn--gold:hover {
  background-color: var(--pana-gold-light);
  border-color: var(--pana-gold-light);
}

.pana-btn--outline {
  background-color: transparent;
  color: var(--pana-gold);
  border-color: var(--pana-gold);
}

.pana-btn--outline:hover {
  background-color: var(--pana-gold);
  color: var(--pana-dark);
}

/* ==========================================
   HEADER
   ========================================== */

.pana-header {
  background-color: var(--pana-dark);
  padding: var(--space-3) 0;
  border-bottom: 1px solid rgba(196, 150, 44, 0.15);
}

.pana-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}

.pana-header__brand {
  display: none;
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--pana-gray);
}

.pana-header__phone {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--pana-gray);
  font-size: var(--font-size-sm);
  transition: color var(--transition-fast);
}

.pana-header__phone:hover {
  color: var(--pana-white);
}

/* Logo group (shared with brand pages) */
.pana-header .brand-header__logos {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
}

.pana-header .brand-header__separator {
  width: 1px;
  height: 28px;
  background-color: var(--pana-gray);
  opacity: 0.3;
  flex-shrink: 0;
}

.pana-header .brand-header__brand-logo {
  height: 30px;
  width: auto;
  flex-shrink: 0;
}

@media (min-width: 768px) {
  .pana-header__brand {
    display: block;
  }

  .pana-header .brand-header__brand-logo {
    height: 36px;
  }

  .pana-header .brand-header__separator {
    height: 32px;
  }
}

/* ==========================================
   HERO
   ========================================== */

.pana-hero {
  background-color: var(--pana-black);
  padding: var(--space-10) 0 var(--space-8);
  position: relative;
  overflow: hidden;
}

/* Línea decorativa dorada vertical */
.pana-hero__line {
  position: absolute;
  left: 10%;
  top: 0;
  bottom: 0;
  width: 1px;
  background-color: rgba(196, 150, 44, 0.1);
  pointer-events: none;
}

.pana-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
  align-items: center;
}

.pana-hero__title {
  font-size: clamp(var(--font-size-2xl), 5vw, var(--font-size-4xl));
  font-weight: var(--font-weight-bold);
  line-height: 1.15;
  color: var(--pana-white);
  margin-bottom: var(--space-4);
}

.pana-hero__sub {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-light);
  color: var(--pana-gray);
  max-width: 520px;
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--space-6);
}

.pana-hero__ctas {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

/* Imagen de producto */
.pana-hero__product {
  position: relative;
  text-align: center;
}

.pana-hero__product img {
  max-height: 380px;
  width: auto;
  margin: 0 auto;
  filter: drop-shadow(0 12px 32px rgba(0, 0, 0, 0.6));
}

.pana-hero__product-tag {
  display: inline-block;
  margin-top: var(--space-3);
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--pana-gold);
  border: 1px solid rgba(196, 150, 44, 0.3);
  padding: var(--space-1) var(--space-4);
}

@media (min-width: 480px) {
  .pana-hero__ctas {
    flex-direction: row;
  }
}

@media (min-width: 1025px) {
  .pana-hero__inner {
    grid-template-columns: 1.2fr 0.8fr;
  }

  .pana-hero {
    padding: var(--space-16) 0 var(--space-12);
  }
}

/* ==========================================
   CREDENCIALES
   ========================================== */

.pana-credentials {
  background-color: var(--pana-dark);
  padding: var(--space-6) 0;
  border-top: 1px solid rgba(196, 150, 44, 0.1);
  border-bottom: 1px solid rgba(196, 150, 44, 0.1);
}

.pana-credentials__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-5);
}

.pana-credential {
  text-align: center;
  padding: var(--space-3);
}

.pana-credential__value {
  display: block;
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--pana-gold);
  letter-spacing: 0.03em;
  margin-bottom: var(--space-1);
}

.pana-credential__label {
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--pana-gray);
}

@media (min-width: 768px) {
  .pana-credentials__grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* ==========================================
   SELECTOR DE SERIES
   ========================================== */

.pana-series {
  background-color: var(--pana-dark);
  padding: var(--space-12) 0;
}

.pana-series__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-5);
}

.pana-series-card {
  border: 1px solid rgba(255, 255, 255, 0.08);
  background-color: rgba(255, 255, 255, 0.02);
  transition: border-color var(--transition-base);
}

.pana-series-card:hover {
  border-color: rgba(196, 150, 44, 0.3);
}

.pana-series-card--premium {
  border-color: rgba(196, 150, 44, 0.25);
}

.pana-series-card__header {
  padding: var(--space-5);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.pana-series-card__badge {
  display: inline-block;
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--pana-gold);
  margin-bottom: var(--space-2);
}

.pana-series-card__name {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  color: var(--pana-white);
}

.pana-series-card__models {
  font-size: var(--font-size-lg);
  color: var(--pana-gray);
  font-weight: var(--font-weight-light);
}

.pana-series-card__body {
  padding: var(--space-5);
}

.pana-series-card__spec {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding: var(--space-3) 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  gap: var(--space-4);
}

.pana-series-card__spec-label {
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--pana-gray);
  flex-shrink: 0;
  min-width: 120px;
}

.pana-series-card__spec-value {
  font-size: var(--font-size-sm);
  color: var(--pana-white);
  text-align: right;
  font-weight: var(--font-weight-medium);
}

.pana-series-card__spec-value--gold {
  color: var(--pana-gold);
  font-weight: var(--font-weight-bold);
}

.pana-series-card__best {
  margin-top: var(--space-4);
  padding-top: var(--space-4);
  border-top: 1px solid rgba(196, 150, 44, 0.15);
  font-size: var(--font-size-sm);
  color: var(--pana-gray);
  font-style: italic;
  line-height: var(--line-height-relaxed);
}

@media (min-width: 768px) {
  .pana-series__grid {
    grid-template-columns: 1fr 1fr;
  }
}

/* ==========================================
   VENTAJAS
   ========================================== */

.pana-advantages {
  background-color: var(--pana-black);
  padding: var(--space-12) 0;
}

.pana-advantages__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}

.pana-advantage {
  padding: var(--space-5);
  border-left: 2px solid rgba(196, 150, 44, 0.2);
  position: relative;
  transition: border-color var(--transition-base);
}

.pana-advantage:hover {
  border-color: var(--pana-gold);
}

.pana-advantage__number {
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-bold);
  color: var(--pana-gold);
  letter-spacing: 0.1em;
  margin-bottom: var(--space-2);
  display: block;
}

.pana-advantage__title {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-bold);
  color: var(--pana-white);
  margin-bottom: var(--space-2);
}

.pana-advantage__desc {
  font-size: var(--font-size-sm);
  color: var(--pana-gray);
  line-height: var(--line-height-relaxed);
}

.pana-advantage__tag {
  display: inline-block;
  margin-top: var(--space-2);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--pana-gold);
  border: 1px solid rgba(196, 150, 44, 0.3);
  padding: 2px var(--space-2);
}

@media (min-width: 768px) {
  .pana-advantages__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1025px) {
  .pana-advantages__grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ==========================================
   SEGMENTOS
   ========================================== */

.pana-segments {
  background-color: var(--pana-dark);
  padding: var(--space-12) 0;
}

.pana-segments__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
}

.pana-segment-card {
  padding: var(--space-5);
  background-color: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.06);
  transition: border-color var(--transition-base), background-color var(--transition-base);
}

.pana-segment-card:hover {
  border-color: rgba(196, 150, 44, 0.25);
  background-color: rgba(196, 150, 44, 0.03);
}

.pana-segment-card__model {
  display: inline-block;
  font-size: 10px;
  font-weight: var(--font-weight-bold);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--pana-gold);
  border: 1px solid rgba(196, 150, 44, 0.3);
  padding: 2px var(--space-2);
  margin-bottom: var(--space-3);
}

.pana-segment-card__title {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-bold);
  color: var(--pana-white);
  margin-bottom: var(--space-2);
}

.pana-segment-card__message {
  font-size: var(--font-size-sm);
  color: var(--pana-gray);
  font-style: italic;
  line-height: var(--line-height-relaxed);
}

@media (min-width: 768px) {
  .pana-segments__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1025px) {
  .pana-segments__grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ==========================================
   FORMULARIO
   ========================================== */

.pana-form-section {
  background-color: var(--pana-black);
  padding: var(--space-12) 0;
  border-top: 2px solid var(--pana-gold);
}

.pana-form-section__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
}

.pana-form-section__title {
  font-size: clamp(var(--font-size-xl), 3vw, var(--font-size-3xl));
  font-weight: var(--font-weight-bold);
  color: var(--pana-white);
  margin-bottom: var(--space-3);
  line-height: var(--line-height-tight);
}

.pana-form-section__text {
  font-size: var(--font-size-base);
  color: var(--pana-gray);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--space-5);
}

.pana-form-section__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.pana-form-section__list li {
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.7);
  padding-left: var(--space-4);
  position: relative;
}

.pana-form-section__list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 8px;
  width: 6px;
  height: 6px;
  background-color: var(--pana-gold);
}

/* Formulario */
.pana-form {
  background-color: rgba(196, 150, 44, 0.04);
  border: 1px solid rgba(196, 150, 44, 0.15);
  padding: var(--space-6);
}

.pana-form__heading {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  color: var(--pana-white);
  margin-bottom: var(--space-5);
  text-align: center;
}

.pana-form__group {
  margin-bottom: var(--space-3);
}

.pana-form__row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3);
}

.pana-form__input {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  background-color: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--pana-white);
  font-size: var(--font-size-sm);
  font-family: var(--font-family-base);
}

.pana-form__input::placeholder {
  color: rgba(255, 255, 255, 0.3);
}

.pana-form__input:focus {
  outline: none;
  border-color: var(--pana-gold);
}

.pana-form__select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='rgba(196,150,44,0.6)' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--space-3) center;
  padding-right: var(--space-8);
}

.pana-form__textarea {
  resize: vertical;
  min-height: 80px;
}

.pana-form__submit {
  width: 100%;
  padding: var(--space-4);
  font-size: var(--font-size-base);
  margin-top: var(--space-2);
}

.pana-form__note {
  text-align: center;
  font-size: var(--font-size-xs);
  color: var(--pana-gray);
  margin-top: var(--space-3);
}

.pana-form__divider {
  text-align: center;
  position: relative;
  margin: var(--space-4) 0;
}

.pana-form__divider::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  height: 1px;
  background-color: rgba(196, 150, 44, 0.15);
}

.pana-form__divider span {
  position: relative;
  z-index: 1;
  background-color: var(--pana-black);
  padding: 0 var(--space-3);
  font-size: var(--font-size-xs);
  color: var(--pana-gray);
  text-transform: uppercase;
}

.pana-form__wa {
  width: 100%;
  display: flex;
  justify-content: center;
}

@media (min-width: 768px) {
  .pana-form-section__inner {
    grid-template-columns: 1fr 1fr;
    align-items: start;
  }
}

/* ==========================================
   FOOTER + WHATSAPP OVERRIDES
   ========================================== */

.pana-page .footer {
  background-color: var(--pana-dark);
  padding-top: 0;
  padding-bottom: 0;
}

.pana-page .whatsapp-float {
  background-color: var(--pana-gold);
  box-shadow: 0 4px 12px rgba(196, 150, 44, 0.3);
}

.pana-page .whatsapp-float:hover {
  box-shadow: 0 6px 20px rgba(196, 150, 44, 0.4);
}