/* ============================================================
   ESTÁNDAR INGENIEROS — Components
   Buttons, Cards, FAQ, Timeline, Stats, Testimonials, Forms
   ============================================================ */

/* ══════════════════════════════════════════════════════════
   BUTTONS
   ══════════════════════════════════════════════════════════ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-size: var(--text-base);
  font-weight: var(--weight-semibold);
  line-height: 1;
  border-radius: var(--radius-md);
  border: 2px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: all var(--transition-base);
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}

.btn:focus-visible {
  outline: 3px solid var(--color-orange);
  outline-offset: 3px;
}

/* Primary — Orange */
.btn--primary {
  background: var(--color-orange);
  color: var(--color-white);
  border-color: var(--color-orange);
  box-shadow: var(--shadow-orange);
}

.btn--primary:hover {
  background: var(--color-orange-dark);
  border-color: var(--color-orange-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(243,146,0,0.35);
}

.btn--primary:active {
  transform: translateY(0);
}

/* Secondary — Outline */
.btn--secondary {
  background: transparent;
  color: var(--color-orange);
  border-color: var(--color-orange);
}

.btn--secondary:hover {
  background: var(--color-orange);
  color: var(--color-white);
  transform: translateY(-2px);
}

/* Ghost White (on dark backgrounds) */
.btn--ghost-white {
  background: rgba(255,255,255,0.12);
  color: var(--color-white);
  border-color: rgba(255,255,255,0.35);
  backdrop-filter: blur(4px);
}

.btn--ghost-white:hover {
  background: rgba(255,255,255,0.22);
  border-color: rgba(255,255,255,0.6);
  transform: translateY(-2px);
}

/* Red */
.btn--red {
  background: var(--color-red);
  color: var(--color-white);
  border-color: var(--color-red);
  box-shadow: var(--shadow-red);
}

.btn--red:hover {
  background: var(--color-red-dark);
  border-color: var(--color-red-dark);
  transform: translateY(-2px);
}

/* WhatsApp */
.btn--whatsapp {
  background: #25D366;
  color: var(--color-white);
  border-color: #25D366;
  box-shadow: 0 4px 16px rgba(37,211,102,0.30);
}

.btn--whatsapp:hover {
  background: #1DA851;
  border-color: #1DA851;
  transform: translateY(-2px);
}

/* Size variants */
.btn--sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
}

.btn--lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-md);
  border-radius: var(--radius-lg);
}

.btn--xl {
  padding: var(--space-5) var(--space-10);
  font-size: var(--text-lg);
  border-radius: var(--radius-lg);
}

/* Full width */
.btn--full { width: 100%; }

/* Icon only */
.btn--icon {
  width: 44px;
  height: 44px;
  padding: 0;
  border-radius: var(--radius-md);
}

/* Button group */
.btn-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  align-items: center;
}

/* ══════════════════════════════════════════════════════════
   SERVICE CARDS
   ══════════════════════════════════════════════════════════ */

.service-card {
  background: var(--color-bg-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: all var(--transition-slow);
  box-shadow: var(--shadow-card);
}

.service-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-card-hover);
  border-color: var(--color-orange);
}

.service-card__image {
  aspect-ratio: 16 / 9;
  overflow: hidden;
  position: relative;
}

.service-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slower);
}

.service-card:hover .service-card__image img {
  transform: scale(1.05);
}

.service-card__icon {
  position: absolute;
  bottom: var(--space-4);
  left: var(--space-4);
  width: 48px;
  height: 48px;
  background: var(--color-orange);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-orange);
  z-index: 1;
}

.service-card__icon svg {
  width: 24px;
  height: 24px;
  fill: var(--color-white);
}

.service-card__body {
  padding: var(--space-6);
  flex: 1;
  display: flex;
  flex-direction: column;
}

.service-card__title {
  font-size: var(--text-xl);
  font-weight: var(--weight-bold);
  color: var(--color-text-primary);
  margin-bottom: var(--space-3);
  letter-spacing: var(--tracking-snug);
}

.service-card__text {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-5);
  flex: 1;
}

.service-card__link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  color: var(--color-orange);
  text-decoration: none;
  transition: gap var(--transition-fast);
  margin-top: auto;
}

.service-card__link:hover {
  gap: var(--space-3);
}

.service-card__link svg {
  width: 16px;
  height: 16px;
  transition: transform var(--transition-fast);
}

.service-card:hover .service-card__link svg {
  transform: translateX(3px);
}

/* ══════════════════════════════════════════════════════════
   PROJECT CARDS
   ══════════════════════════════════════════════════════════ */

.project-card {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  background: var(--color-bg-header);
  box-shadow: var(--shadow-lg);
  cursor: pointer;
}

.project-card__image {
  aspect-ratio: 4 / 3;
  overflow: hidden;
}

.project-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slower);
}

.project-card:hover .project-card__image img {
  transform: scale(1.08);
}

.project-card__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(30,30,29,0.92) 0%, rgba(30,30,29,0.3) 50%, transparent 100%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: var(--space-6);
  transition: background var(--transition-slow);
}

.project-card:hover .project-card__overlay {
  background: linear-gradient(to top, rgba(243,146,0,0.88) 0%, rgba(30,30,29,0.5) 60%, rgba(30,30,29,0.2) 100%);
}

.project-card__category {
  display: inline-flex;
  align-items: center;
  padding: var(--space-1) var(--space-3);
  background: var(--color-orange);
  color: var(--color-white);
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  border-radius: var(--radius-full);
  margin-bottom: var(--space-3);
  width: fit-content;
}

.project-card__title {
  font-size: var(--text-xl);
  font-weight: var(--weight-bold);
  color: var(--color-white);
  margin-bottom: var(--space-1);
  line-height: var(--leading-snug);
}

.project-card__location {
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.75);
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.project-card__cta {
  opacity: 0;
  transform: translateY(8px);
  transition: all var(--transition-base);
  margin-top: var(--space-4);
}

.project-card:hover .project-card__cta {
  opacity: 1;
  transform: translateY(0);
}

/* ══════════════════════════════════════════════════════════
   STAT / COUNTER CARDS
   ══════════════════════════════════════════════════════════ */

.stat-card {
  text-align: center;
  padding: var(--space-8) var(--space-6);
}

.stat-card__number {
  font-size: clamp(var(--text-3xl), 5vw, var(--text-5xl));
  font-weight: var(--weight-extrabold);
  color: var(--color-orange);
  letter-spacing: var(--tracking-tight);
  line-height: 1;
  display: block;
}

.stat-card__unit {
  font-size: var(--text-xl);
  font-weight: var(--weight-bold);
  color: var(--color-orange);
}

.stat-card__label {
  display: block;
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  font-weight: var(--weight-medium);
  margin-top: var(--space-2);
  line-height: var(--leading-snug);
}

/* Stat grid with dividers */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
}

.stats-grid .stat-card {
  border-right: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.stats-grid .stat-card:nth-child(2n) {
  border-right: none;
}

.stats-grid .stat-card:nth-last-child(-n+2) {
  border-bottom: none;
}

@media (min-width: 768px) {
  .stats-grid {
    grid-template-columns: repeat(4, 1fr);
  }
  .stats-grid .stat-card {
    border-bottom: none !important;
  }
  .stats-grid .stat-card:nth-child(4n) {
    border-right: none;
  }
  .stats-grid .stat-card:nth-child(2n) {
    border-right: 1px solid var(--color-border);
  }
  .stats-grid .stat-card:nth-child(4n) {
    border-right: none;
  }
}

/* ══════════════════════════════════════════════════════════
   BENEFIT / FEATURE CARDS
   ══════════════════════════════════════════════════════════ */

.feature-card {
  display: flex;
  gap: var(--space-5);
  padding: var(--space-6);
  background: var(--color-bg-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  transition: all var(--transition-base);
}

.feature-card:hover {
  border-color: var(--color-orange);
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}

.feature-card__icon {
  flex-shrink: 0;
  width: 52px;
  height: 52px;
  background: linear-gradient(135deg, rgba(243,146,0,0.12), rgba(243,146,0,0.06));
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition-base);
}

.feature-card:hover .feature-card__icon {
  background: var(--color-orange);
}

.feature-card__icon svg {
  width: 26px;
  height: 26px;
  fill: var(--color-orange);
  transition: fill var(--transition-base);
}

.feature-card:hover .feature-card__icon svg {
  fill: var(--color-white);
}

.feature-card__title {
  font-size: var(--text-md);
  font-weight: var(--weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--space-2);
}

.feature-card__text {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
}

/* ══════════════════════════════════════════════════════════
   TIMELINE / PROCESS STEPS
   ══════════════════════════════════════════════════════════ */

.timeline {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 23px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--color-orange), var(--color-red));
}

.timeline__step {
  display: flex;
  gap: var(--space-6);
  padding-bottom: var(--space-10);
  position: relative;
}

.timeline__step:last-child {
  padding-bottom: 0;
}

.timeline__marker {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  border-radius: var(--radius-full);
  background: var(--color-bg-white);
  border: 3px solid var(--color-orange);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-base);
  font-weight: var(--weight-extrabold);
  color: var(--color-orange);
  position: relative;
  z-index: 1;
  flex-shrink: 0;
  transition: all var(--transition-base);
}

.timeline__step.is-active .timeline__marker,
.timeline__step:hover .timeline__marker {
  background: var(--color-orange);
  color: var(--color-white);
  box-shadow: var(--shadow-orange);
}

.timeline__content {
  padding-top: var(--space-2);
  flex: 1;
}

.timeline__title {
  font-size: var(--text-lg);
  font-weight: var(--weight-bold);
  color: var(--color-text-primary);
  margin-bottom: var(--space-2);
}

.timeline__text {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
}

@media (min-width: 768px) {
  .timeline {
    flex-direction: row;
    gap: 0;
    align-items: flex-start;
  }

  .timeline::before {
    left: 0;
    right: 0;
    top: 23px;
    bottom: auto;
    width: auto;
    height: 2px;
  }

  .timeline__step {
    flex: 1;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding-bottom: 0;
    padding-top: 0;
    gap: var(--space-4);
  }
}

/* ══════════════════════════════════════════════════════════
   FAQ ACCORDION
   ══════════════════════════════════════════════════════════ */

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

.faq-item {
  background: var(--color-bg-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.faq-item.is-open {
  border-color: var(--color-orange);
  box-shadow: var(--shadow-sm);
}

.faq-item__question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-5) var(--space-6);
  font-size: var(--text-base);
  font-weight: var(--weight-semibold);
  color: var(--color-text-primary);
  cursor: pointer;
  background: none;
  border: none;
  width: 100%;
  text-align: left;
  transition: color var(--transition-fast);
  user-select: none;
}

.faq-item__question:hover {
  color: var(--color-orange);
}

.faq-item.is-open .faq-item__question {
  color: var(--color-orange);
}

.faq-item__icon {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  border-radius: var(--radius-full);
  background: var(--color-bg-section);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-base);
}

.faq-item.is-open .faq-item__icon {
  background: var(--color-orange);
  transform: rotate(45deg);
}

.faq-item__icon svg {
  width: 14px;
  height: 14px;
  fill: var(--color-gray-mid);
  transition: fill var(--transition-fast);
}

.faq-item.is-open .faq-item__icon svg {
  fill: var(--color-white);
}

.faq-item__answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-slow);
}

.faq-item.is-open .faq-item__answer {
  max-height: 600px;
}

.faq-item__answer-inner {
  padding: 0 var(--space-6) var(--space-5);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
  border-top: 1px solid var(--color-border);
  padding-top: var(--space-4);
}

/* ══════════════════════════════════════════════════════════
   FORM COMPONENTS
   ══════════════════════════════════════════════════════════ */

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.form-label {
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  color: var(--color-text-primary);
}

.form-label--required::after {
  content: ' *';
  color: var(--color-red);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-base);
  font-family: var(--font-primary);
  color: var(--color-text-primary);
  background: var(--color-bg-white);
  border: 1.5px solid var(--color-border-medium);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  outline: none;
  -webkit-appearance: none;
  appearance: none;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--color-orange);
  box-shadow: 0 0 0 3px rgba(243,146,0,0.15);
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--color-text-muted);
}

.form-textarea {
  resize: vertical;
  min-height: 120px;
}

.form-select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='%236B6B6A'%3E%3Cpath fill-rule='evenodd' d='M5.293 7.293a1 1 0 011.414 0L10 10.586l3.293-3.293a1 1 0 111.414 1.414l-4 4a1 1 0 01-1.414 0l-4-4a1 1 0 010-1.414z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--space-3) center;
  background-size: 18px;
  padding-right: var(--space-10);
  cursor: pointer;
}

.form-checkbox-wrapper {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  cursor: pointer;
}

.form-checkbox {
  width: 18px;
  height: 18px;
  border: 2px solid var(--color-border-medium);
  border-radius: var(--radius-sm);
  flex-shrink: 0;
  margin-top: 2px;
  cursor: pointer;
  accent-color: var(--color-orange);
  transition: border-color var(--transition-fast);
}

.form-checkbox:checked {
  border-color: var(--color-orange);
}

.form-checkbox-label {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
  cursor: pointer;
}

.form-checkbox-label a {
  color: var(--color-orange);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.form-error {
  font-size: var(--text-xs);
  color: var(--color-red);
  display: none;
}

.form-group.has-error .form-error {
  display: block;
}

.form-group.has-error .form-input,
.form-group.has-error .form-select,
.form-group.has-error .form-textarea {
  border-color: var(--color-red);
}

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

@media (min-width: 640px) {
  .form-grid--2col {
    grid-template-columns: 1fr 1fr;
  }
}

/* Form success state */
.form-success {
  display: none;
  text-align: center;
  padding: var(--space-12) var(--space-6);
}

.form-success.is-visible {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
}

.form-success__icon {
  width: 64px;
  height: 64px;
  background: rgba(243,146,0,0.10);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
}

.form-success__icon svg {
  width: 32px;
  height: 32px;
  fill: var(--color-orange);
}

.form-success__title {
  font-size: var(--text-xl);
  font-weight: var(--weight-bold);
  color: var(--color-text-primary);
}

.form-success__text {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
  max-width: 360px;
}

/* ══════════════════════════════════════════════════════════
   TESTIMONIAL CARD
   ══════════════════════════════════════════════════════════ */

.testimonial-card {
  background: var(--color-bg-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8) var(--space-6);
  position: relative;
}

.testimonial-card::before {
  content: '\201C';
  position: absolute;
  top: var(--space-4);
  left: var(--space-6);
  font-size: 80px;
  line-height: 1;
  color: var(--color-orange);
  opacity: 0.15;
  font-family: Georgia, serif;
}

.testimonial-card__stars {
  display: flex;
  gap: 3px;
  margin-bottom: var(--space-4);
}

.testimonial-card__star {
  width: 16px;
  height: 16px;
  fill: var(--color-orange);
}

.testimonial-card__text {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-5);
  font-style: italic;
}

.testimonial-card__author {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.testimonial-card__avatar {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, var(--color-orange) 0%, var(--color-red) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-md);
  font-weight: var(--weight-bold);
  color: var(--color-white);
  flex-shrink: 0;
}

.testimonial-card__name {
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  color: var(--color-text-primary);
}

.testimonial-card__company {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

/* ══════════════════════════════════════════════════════════
   TRUST / ICON STRIP
   ══════════════════════════════════════════════════════════ */

.trust-strip {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-6);
  padding: var(--space-8) 0;
}

.trust-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  color: var(--color-text-secondary);
}

.trust-item svg {
  width: 20px;
  height: 20px;
  fill: var(--color-orange);
  flex-shrink: 0;
}

/* ══════════════════════════════════════════════════════════
   FILTER TABS
   ══════════════════════════════════════════════════════════ */

.filter-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-8);
}

.filter-tab {
  padding: var(--space-2) var(--space-5);
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  color: var(--color-text-secondary);
  background: var(--color-bg-section);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.filter-tab:hover {
  border-color: var(--color-orange);
  color: var(--color-orange);
}

.filter-tab.is-active {
  background: var(--color-orange);
  border-color: var(--color-orange);
  color: var(--color-white);
  box-shadow: var(--shadow-orange);
}

/* ══════════════════════════════════════════════════════════
   CTA BANNER
   ══════════════════════════════════════════════════════════ */

.cta-banner {
  background: linear-gradient(135deg, var(--color-gray-dark) 0%, #1E1E1D 100%);
  border-radius: var(--radius-2xl);
  padding: clamp(var(--space-10), 6vw, var(--space-16)) clamp(var(--space-6), 4vw, var(--space-16));
  position: relative;
  overflow: hidden;
}

.cta-banner::before {
  content: '';
  position: absolute;
  top: -60px;
  right: -60px;
  width: 280px;
  height: 280px;
  border-radius: var(--radius-full);
  background: radial-gradient(circle, rgba(243,146,0,0.15) 0%, transparent 70%);
  pointer-events: none;
}

.cta-banner::after {
  content: '';
  position: absolute;
  bottom: -40px;
  left: -40px;
  width: 200px;
  height: 200px;
  border-radius: var(--radius-full);
  background: radial-gradient(circle, rgba(190,22,34,0.10) 0%, transparent 70%);
  pointer-events: none;
}

.cta-banner__content {
  position: relative;
  z-index: 1;
}

.cta-banner__tag {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--color-orange);
  margin-bottom: var(--space-4);
}

.cta-banner__title {
  font-size: clamp(var(--text-xl), 3.5vw, var(--text-4xl));
  font-weight: var(--weight-extrabold);
  color: var(--color-white);
  letter-spacing: var(--tracking-tight);
  line-height: var(--leading-tight);
  margin-bottom: var(--space-4);
}

.cta-banner__text {
  font-size: var(--text-base);
  color: rgba(255,255,255,0.70);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-8);
  max-width: 540px;
}

/* ══════════════════════════════════════════════════════════
   CHECKLIST (Benefits list)
   ══════════════════════════════════════════════════════════ */

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

.checklist__item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
}

.checklist__icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  border-radius: var(--radius-full);
  background: rgba(243,146,0,0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 1px;
}

.checklist__icon svg {
  width: 11px;
  height: 11px;
  fill: var(--color-orange);
}

/* ══════════════════════════════════════════════════════════
   CONTACT INFO CARD
   ══════════════════════════════════════════════════════════ */

.contact-info-card {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
  padding: var(--space-5) var(--space-6);
  background: var(--color-bg-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  transition: all var(--transition-base);
}

.contact-info-card:hover {
  border-color: var(--color-orange);
  box-shadow: var(--shadow-sm);
}

.contact-info-card__icon {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  background: rgba(243,146,0,0.10);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
}

.contact-info-card__icon svg {
  width: 24px;
  height: 24px;
  fill: var(--color-orange);
}

.contact-info-card__label {
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: var(--space-1);
}

.contact-info-card__value {
  font-size: var(--text-md);
  font-weight: var(--weight-semibold);
  color: var(--color-text-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.contact-info-card__value:hover {
  color: var(--color-orange);
}

.contact-info-card__sub {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-top: var(--space-1);
}

/* ══════════════════════════════════════════════════════════
   BACK TO TOP
   ══════════════════════════════════════════════════════════ */

.back-to-top {
  position: fixed;
  bottom: calc(var(--space-6) + 64px);
  right: var(--space-6);
  z-index: var(--z-sticky);
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: var(--color-gray-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: all var(--transition-base);
  cursor: pointer;
  border: none;
}

.back-to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  background: var(--color-orange);
  transform: translateY(-3px);
}

.back-to-top svg {
  width: 18px;
  height: 18px;
  fill: var(--color-white);
}

@media (max-width: 768px) {
  .back-to-top {
    bottom: calc(var(--space-4) + 64px);
    right: var(--space-4);
  }
}