/* ─────────────────────────────────────────────────────────────────
   sustainability.css — Portal de Sostenibilidad Digital
  SOPRA STERIA
   Estilos específicos del portal; complementa style.css y new-web.css
───────────────────────────────────────────────────────────────── */

/* ── UTILIDAD: Color turquesa para acentos de sostenibilidad ── */
.txt-turquoise {
  color: var(--eggs-turquoise);
}

/* Force white logo over dark backgrounds; restore original on light/scrolled states. */
.header-on-dark .header-logo img,
body.compact-layout .site-header .header-logo img {
  filter: brightness(0) invert(1) contrast(1.08) !important;
}

.site-header.scrolled .header-logo img,
body.compact-layout .site-header.scrolled .header-logo img {
  filter: none !important;
}

/* ── HERO ─────────────────────────────────────────────────────── */
.sustain-bg-gradient {
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(ellipse at 18% 78%, rgba(95, 159, 69, 0.16) 0%, transparent 52%),
    radial-gradient(ellipse at 82% 22%, rgba(95, 159, 69, 0.10) 0%, transparent 52%),
    url('wall1.png');
  background-size: cover, cover, cover;
  background-position: center center, center center, center center;
  background-repeat: no-repeat, no-repeat, no-repeat;
  z-index: 0;
  pointer-events: none;
}

.sustain-section-wall {
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-size: cover;
  background-position: center center;
  background-repeat: no-repeat;
}

.sustain-wall-2 {
  background-image:
    radial-gradient(ellipse at 22% 78%, rgba(95, 159, 69, 0.14) 0%, transparent 54%),
    radial-gradient(ellipse at 85% 18%, rgba(95, 159, 69, 0.11) 0%, transparent 50%),
    url('wall2.png');
}

.sustain-wall-3 {
  background-image:
    radial-gradient(ellipse at 16% 18%, rgba(95, 159, 69, 0.12) 0%, transparent 48%),
    radial-gradient(ellipse at 88% 80%, rgba(95, 159, 69, 0.14) 0%, transparent 56%),
    url('wall3.jpg');
}

.sustain-wall-challenge {
  background-image:
    radial-gradient(ellipse at 50% 50%, rgba(0, 188, 156, 0.22) 0%, transparent 60%),
    radial-gradient(ellipse at 15% 75%, rgba(95, 159, 69, 0.15) 0%, transparent 50%);
}

.sustain-hero-center {
  text-align: center;
  align-items: center;
}

.sustain-hero-btns {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: center;
  align-items: center;
}

.sustain-partner-tag {
  font-family: 'Haffer Concrete Light', 'Helvetica Neue', sans-serif;
  font-size: 13px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.70);
  margin-bottom: 28px;
}

.sustain-hero-sub {
  font-family: 'Haffer Concrete Light', 'Helvetica Neue', sans-serif;
  font-size: clamp(1.1rem, 2.2vw, 1.55rem);
  color: rgba(255, 255, 255, 0.82);
  margin: 0 0 44px 0;
  max-width: 560px;
  text-align: center;
  line-height: 1.45;
}

/* ── ETIQUETA DE SECCIÓN ──────────────────────────────────────── */
.sustain-label {
  font-family: 'Haffer Concrete Light', 'Helvetica Neue', sans-serif;
  font-size: clamp(1.05rem, 1.55vw, 1.45rem);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--eggs-turquoise);
  margin-bottom: 22px;
  display: block;
}

/* ── SECCIÓN B — EL RETO (LIGHT) ──────────────────────────────── */
.sustain-intro-block {
  max-width: 1200px;
  width: 100%;
  padding: 0 8vw;
}

.sustain-intro-block h2 {
  font-family: 'Haffer Concrete', 'Helvetica Neue', sans-serif;
  font-size: clamp(1.9rem, 4.2vw, 3.4rem);
  line-height: 1.18;
  color: var(--eggs-dark);
  margin: 0 0 28px 0;
  font-weight: normal;
  letter-spacing: -0.02em;
}

.sustain-intro-block h2 em {
  font-family: 'Haffer Concrete Light', 'Helvetica Neue', sans-serif;
  font-style: normal;
  color: var(--eggs-gray);
}

.sustain-body-text {
  font-family: 'Haffer Concrete Light', 'Helvetica Neue', sans-serif;
  font-size: clamp(0.95rem, 1.4vw, 1.15rem);
  color: var(--eggs-gray);
  max-width: 680px;
  line-height: 1.65;
  margin: 0 0 52px 0;
}

.sustain-stats {
  display: flex;
  gap: 56px;
  flex-wrap: wrap;
}

.sustain-stat {
  display: flex;
  flex-direction: column;
  gap: 7px;
}

.stat-num {
  font-family: 'Haffer Concrete', 'Helvetica Neue', sans-serif;
  font-size: clamp(1.6rem, 3.2vw, 2.6rem);
  color: var(--eggs-dark);
  line-height: 1;
  letter-spacing: -0.03em;
}

.stat-label {
  font-family: 'Haffer Concrete Light', 'Helvetica Neue', sans-serif;
  font-size: 12px;
  color: var(--eggs-gray);
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

/* ── SECCIÓN C — NUESTRA OFERTA (DARK) ───────────────────────── */
.sustain-services-wrap {
  width: 100%;
  max-width: 1400px;
  padding: 0 8vw;
  box-sizing: border-box;
  position: relative;
  z-index: 1;
}

.sustain-services-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
  margin-top: 16px;
}

.sustain-service-card {
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 18px;
  padding: 30px 24px;
  background: linear-gradient(180deg, rgba(255,255,255,0.04) 0%, rgba(255,255,255,0.015) 100%);
  transition: border-color 0.3s ease, transform 0.3s ease;
  min-height: 280px;
}

.sustain-service-card:hover {
  border-color: var(--eggs-turquoise);
  transform: translateY(-4px);
}

.sustain-service-icon {
  font-size: 1.8rem;
  color: var(--eggs-turquoise);
  margin-bottom: 22px;
  display: block;
  line-height: 1;
}

.sustain-service-title {
  font-family: 'Haffer Concrete', 'Helvetica Neue', sans-serif;
  font-size: clamp(1.05rem, 1.8vw, 1.45rem);
  color: var(--eggs-white);
  margin: 0 0 16px 0;
  font-weight: normal;
  line-height: 1.2;
  letter-spacing: -0.01em;
}

.sustain-service-desc {
  font-family: 'Haffer Concrete Light', 'Helvetica Neue', sans-serif;
  font-size: clamp(0.88rem, 1.2vw, 1rem);
  color: rgba(255, 255, 255, 0.76);
  line-height: 1.65;
  margin: 0;
}

/* ── SECCIÓN D — NUESTRO ENFOQUE (LIGHT) ─────────────────────── */
.sustain-approach-wrap {
  width: 100%;
  max-width: 1100px;
  padding: 0 8vw;
  box-sizing: border-box;
}

.sustain-steps {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin-top: 16px;
}

.sustain-step {
  display: flex;
  align-items: flex-start;
  gap: 44px;
  padding: 36px 0;
  border-bottom: 1px solid rgba(0, 0, 0, 0.08);
  transition: opacity 0.3s ease;
}

.sustain-step:last-child {
  border-bottom: none;
}

.sustain-step:hover {
  opacity: 0.85;
}

.sustain-step-num {
  font-family: 'Haffer Concrete', 'Helvetica Neue', sans-serif;
  font-size: clamp(2.2rem, 4.5vw, 3.8rem);
  color: var(--eggs-turquoise);
  line-height: 1;
  flex-shrink: 0;
  width: 90px;
  letter-spacing: -0.04em;
}

.sustain-step-content {
  flex: 1;
  padding-top: 6px;
}

.sustain-step-title {
  font-family: 'Haffer Concrete', 'Helvetica Neue', sans-serif;
  font-size: clamp(1.1rem, 1.9vw, 1.5rem);
  color: var(--eggs-dark);
  margin: 0 0 10px 0;
  font-weight: normal;
  letter-spacing: -0.01em;
}

.sustain-step-desc {
  font-family: 'Haffer Concrete Light', 'Helvetica Neue', sans-serif;
  font-size: clamp(0.9rem, 1.25vw, 1.05rem);
  color: var(--eggs-gray);
  line-height: 1.65;
  margin: 0;
}

/* ── SECCIÓN E — FOOTER / CTA (DARK) ────────────────────────── */
.sustain-footer-slide {
  width: 100vw;
  height: 100vh;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  overflow: hidden;
}

.sustain-footer-inner {
  padding: 0 8vw 6vw 8vw;
  position: relative;
  z-index: 1;
}

.sustain-footer-inner .f-footer-top h2 {
  font-size: clamp(2.2rem, 5.5vw, 5rem);
  line-height: 1.1;
  color: var(--eggs-white);
  margin-bottom: 12px;
}

.sustain-footer-inner .f-footer-top h2 .txt-turquoise {
  display: inline-block;
  margin-top: 0.22em;
  font-size: clamp(1.35rem, 3vw, 2.6rem);
  line-height: 1.18;
}

.sustain-footer-inner .f-footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
  padding-top: 28px;
  color: rgba(255, 255, 255, 0.75);
}

.sustain-footer-inner .f-footer-bottom a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 255, 255, 0.2);
  transition: border-color 0.3s ease, color 0.3s ease;
}

.sustain-footer-inner .f-footer-bottom a:hover {
  color: var(--eggs-white);
  border-color: rgba(255, 255, 255, 0.6);
}

.sustain-ods-slide {
  width: 100vw;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: #ffffff;
}

.sustain-ods-title {
  font-family: 'Haffer Concrete', 'Helvetica Neue', sans-serif;
  font-size: clamp(2.5rem, 5.2vw, 4.2rem);
  color: var(--eggs-dark);
  margin: 14px 0 28px 0;
  letter-spacing: -0.02em;
}

.sustain-ods-logo {
  width: clamp(180px, 26vw, 420px);
  height: auto;
  display: block;
}

.sustain-ods-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-bottom: 22px;
}

.sustain-ods-pill {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 14px;
  border: 1px solid rgba(0, 0, 0, 0.08);
  border-radius: 14px;
  color: #ffffff;
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.12);
  position: relative;
  overflow: hidden;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.sustain-ods-pill::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.12) 0%, rgba(0, 0, 0, 0.2) 100%);
  pointer-events: none;
}

.sustain-ods-pill:hover {
  transform: translateY(-3px);
  box-shadow: 0 14px 30px rgba(0, 0, 0, 0.18);
}

.sustain-ods-pill-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  position: relative;
  z-index: 1;
}

.sustain-ods-head-copy {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  min-width: 0;
}

.sustain-ods-goal-number {
  font-family: 'Haffer Concrete', 'Helvetica Neue', sans-serif;
  font-size: clamp(2.6rem, 4.8vw, 4rem);
  line-height: 0.9;
  color: rgba(255, 255, 255, 0.98);
  flex-shrink: 0;
  margin-top: 2px;
}

.sustain-ods-goal-title {
  margin: 0;
  font-family: 'Haffer Concrete', 'Helvetica Neue', sans-serif;
  font-size: clamp(0.9rem, 1.15vw, 1.02rem);
  line-height: 1.25;
  letter-spacing: -0.01em;
}

.sustain-ods-goal-icon {
  width: 76px;
  height: 76px;
  object-fit: contain;
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.34);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.28);
  flex-shrink: 0;
  position: relative;
  z-index: 1;
  background: rgba(255, 255, 255, 0.16);
}

.sustain-ods-detail-btn {
  position: relative;
  z-index: 1;
  align-self: flex-start;
  margin-left: calc(clamp(2.6rem, 4.8vw, 4rem) + 12px);
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  font-family: 'Haffer Concrete', 'Helvetica Neue', sans-serif;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.62);
  border-radius: 999px;
  padding: 7px 12px;
  background: rgba(0, 0, 0, 0.12);
  transition: background 0.2s ease, border-color 0.2s ease;
}

.sustain-ods-detail-btn:hover {
  background: rgba(0, 0, 0, 0.28);
  border-color: rgba(255, 255, 255, 0.9);
}

.sustain-ods-link-icon {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  line-height: 1;
  color: #ffffff;
  background: rgba(0, 0, 0, 0.35);
}

.sustain-ods-pill.goal-9  { background: #F36D25; }
.sustain-ods-pill.goal-4  { background: #C5192D; }
.sustain-ods-pill.goal-8  { background: #A21942; }
.sustain-ods-pill.goal-11 { background: #F99D26; }
.sustain-ods-pill.goal-13 { background: #3F7E44; }
.sustain-ods-pill.goal-17 { background: #19486A; }

.sustain-ods-back {
  display: inline-flex;
}

.sustain-ods-slide .eggs-btn.outline .btn-text,
.sustain-ods-slide .eggs-btn.outline .btn-icon {
  background-color: var(--eggs-dark);
  color: var(--eggs-white);
}

.sustain-contact-wrap {
  max-width: 1240px;
  width: 100%;
  margin: 0 auto;
  padding: clamp(48px, 8vh, 96px) 8vw 0 8vw;
}

#block-f1 .sustain-label {
  font-size: clamp(0.88rem, 1.25vw, 1.12rem);
}

.sustain-contact-title {
  font-family: 'Haffer Concrete', 'Helvetica Neue', sans-serif;
  font-size: clamp(2.4rem, 5vw, 4.3rem);
  line-height: 1.08;
  color: var(--eggs-dark);
  margin: 0 0 22px 0;
  letter-spacing: -0.02em;
}

.sustain-contact-lead {
  font-family: 'Haffer Concrete Light', 'Helvetica Neue', sans-serif;
  font-size: clamp(1.08rem, 1.75vw, 1.42rem);
  color: var(--eggs-gray);
  max-width: 880px;
  margin: 0 0 40px 0;
  line-height: 1.58;
}

.sustain-contact-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.sustain-contact-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  text-decoration: none;
  background: #ffffff;
  border: 1px solid rgba(0, 0, 0, 0.08);
  border-left: 4px solid var(--eggs-turquoise);
  border-radius: 12px;
  padding: 20px;
  color: var(--eggs-dark);
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}

.sustain-contact-card:hover {
  transform: translateY(-2px);
  border-color: rgba(95, 159, 69, 0.44);
  box-shadow: 0 10px 22px rgba(0, 0, 0, 0.08);
}

.sustain-contact-kicker {
  font-family: 'Haffer Concrete', 'Helvetica Neue', sans-serif;
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(0, 0, 0, 0.55);
}

.sustain-contact-value {
  font-family: 'Haffer Concrete Light', 'Helvetica Neue', sans-serif;
  font-size: 1.12rem;
  line-height: 1.4;
  color: var(--eggs-dark);
  word-break: break-word;
}

.sustain-contact-footer-band {
  width: 100%;
  margin-top: 34px;
  background: #5f9f45;
  border-top: 1px solid rgba(255, 255, 255, 0.25);
  box-shadow: 0 -10px 24px rgba(0, 0, 0, 0.12);
}

.sustain-contact-footer-inner {
  max-width: 1240px;
  width: 100%;
  margin: 0 auto;
  padding: 22px 8vw;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  font-family: 'Haffer Concrete Light', 'Helvetica Neue', sans-serif;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.98);
}

.sustain-contact-footer-links {
  display: flex;
  gap: 24px;
  align-items: center;
}

.sustain-contact-footer-inner a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 255, 255, 0.44);
  transition: color 0.2s ease, border-color 0.2s ease;
}

.sustain-contact-footer-inner a:hover {
  color: #ffffff;
  border-color: rgba(255, 255, 255, 0.88);
}

@media (min-width: 1440px) and (min-height: 860px) {
  .sustain-partner-tag {
    font-size: 14px;
    margin-bottom: 34px;
  }

  .sustain-hero-sub {
    max-width: 700px;
    margin-bottom: 52px;
  }

  .sustain-body-text {
    max-width: 760px;
  }

  .sustain-stats {
    gap: 72px;
  }
}

@media (min-width: 768px) and (max-width: 1439px), (min-width: 768px) and (max-height: 859px) {
  .sustain-intro-block,
  .sustain-services-wrap,
  .sustain-approach-wrap {
    padding: 0 7vw;
  }

  .sustain-hero-sub {
    max-width: 620px;
  }

  .sustain-stats {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 28px;
  }

  .sustain-services-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 28px 36px;
  }

  .sustain-service-card {
    padding: 24px 20px;
    min-height: 240px;
  }

  .sustain-ods-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .sustain-ods-title {
    font-size: clamp(2rem, 4.2vw, 3.2rem);
  }

  .sustain-ods-goal-icon {
    width: 70px;
    height: 70px;
  }

  .sustain-contact-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .sustain-contact-footer-inner {
    margin-top: 0;
    padding: 18px 7vw;
  }

  .sustain-step {
    gap: 32px;
  }

  .sustain-footer-inner {
    padding: 0 7vw 7vw 7vw;
  }
}

/* ── RESPONSIVE ───────────────────────────────────────────────── */
@media (max-width: 1024px) {
  .sustain-services-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }

  .sustain-service-card {
    padding: 22px 18px !important;
    min-height: 220px;
  }

  .sustain-step {
    gap: 28px;
  }

  .sustain-step-num {
    width: 60px;
  }

  .sustain-stats {
    gap: 36px;
  }

  .sustain-ods-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .sustain-ods-goal-icon {
    width: 66px;
    height: 66px;
  }

  .sustain-ods-goal-number {
    font-size: clamp(2.2rem, 5vw, 3.1rem);
  }

  .sustain-contact-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .sustain-contact-footer-inner {
    margin-top: 0;
    padding: 16px 7vw;
  }
}

@media (max-width: 768px) {
  .sustain-intro-block,
  .sustain-services-wrap,
  .sustain-approach-wrap {
    padding: 0 6vw;
  }

  .sustain-partner-tag {
    font-size: 12px;
    margin-bottom: 20px;
  }

  .sustain-hero-sub {
    font-size: 1rem;
    margin-bottom: 32px;
    max-width: 320px;
  }

  .sustain-intro-block h2 {
    margin-bottom: 20px;
  }

  .sustain-body-text {
    margin-bottom: 36px;
    max-width: none;
  }

  .sustain-stats {
    display: grid;
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .sustain-service-card {
    padding: 18px 16px !important;
    min-height: auto;
  }

  .sustain-service-title {
    max-width: none;
  }

  .sustain-ods-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .sustain-ods-pill {
    border-radius: 12px;
    padding: 14px;
  }

  .sustain-ods-pill-head {
    gap: 10px;
  }

  .sustain-ods-head-copy {
    gap: 10px;
  }

  .sustain-ods-title {
    font-size: clamp(1.55rem, 7vw, 2.2rem);
    margin: 20px 0;
  }

  .sustain-ods-logo {
    width: clamp(160px, 52vw, 260px);
    margin-top: 30px;
  }

  #block-e1 .f-footer-top .eggs-btn {
    display: none !important;
  }

  .sustain-ods-goal-icon {
    width: 60px;
    height: 60px;
    border-radius: 10px;
  }

  .sustain-ods-goal-number {
    font-size: 2.2rem;
  }

  .sustain-ods-detail-btn {
    margin-left: calc(2.2rem + 10px);
  }

  .sustain-ods-goal-title {
    font-size: 0.9rem;
  }

  .sustain-ods-detail-btn {
    font-size: 0.78rem;
    padding: 8px 12px;
  }

  .sustain-footer-inner {
    padding: 0 6vw 8vw 6vw;
  }

  .sustain-contact-wrap {
    padding: 0 6vw;
  }

  .sustain-contact-grid {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .sustain-contact-footer-band {
    margin-top: 24px;
  }

  .sustain-contact-footer-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
    padding: 14px 6vw;
  }

  .sustain-contact-footer-links {
    flex-wrap: wrap;
    gap: 14px;
  }

  .sustain-step {
    flex-direction: column;
    gap: 12px;
  }

  .sustain-step-num {
    font-size: 2rem;
    width: auto;
  }
}

/* ── BANNER DE INVITACIÓN AL RETO SUSTAINABILITY CHALLENGE ── */
.sustain-challenge-invite-banner {
  background: rgba(0, 188, 156, 0.05);
  border: 1px solid rgba(0, 188, 156, 0.12);
  border-left: 5px solid var(--eggs-turquoise);
  border-radius: 16px;
  padding: 24px 32px;
  margin-bottom: 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  text-align: left;
  box-shadow: 0 10px 30px rgba(0,0,0,0.01);
  transition: all 0.3s ease;
}

.sustain-challenge-invite-banner:hover {
  background: rgba(0, 188, 156, 0.08);
  border-color: rgba(0, 188, 156, 0.2);
  transform: translateY(-2px);
  box-shadow: 0 12px 36px rgba(0, 188, 156, 0.05);
}

.sustain-invite-btn {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  font-family: 'Haffer Concrete', sans-serif;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  font-size: 0.82rem;
  color: #ffffff;
  background-color: var(--eggs-turquoise);
  border: none;
  border-radius: 30px;
  padding: 14px 28px;
  cursor: pointer;
  box-shadow: 0 4px 12px rgba(0, 188, 156, 0.2);
  transition: all 0.3s ease;
}

.sustain-invite-btn:hover {
  background-color: #00a387;
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(0, 188, 156, 0.3);
}

@media (max-width: 768px) {
  .sustain-challenge-invite-banner {
    flex-direction: column;
    align-items: flex-start;
    padding: 20px 24px;
    gap: 16px;
  }
  .sustain-invite-btn {
    width: 100%;
    text-align: center;
  }
}

/* ── ACCESIBILIDAD: FOCUS VISIBLE EN EL PORTAL DE SOSTENIBILIDAD ── */
button:focus-visible,
a:focus-visible,
[role="button"]:focus-visible,
[tabindex="0"]:focus-visible {
  outline: 3px solid var(--eggs-turquoise);
  outline-offset: 3px;
  box-shadow: 0 0 10px rgba(0, 188, 156, 0.4);
}