/* =========================================================
   Flow Slider (横スライド版「検査の流れ」)
   ※ 色・フォントは style.css の CSS変数 (:root) を参照
   ========================================================= */

/* ---------- Section Background ---------- */
.flow.section {
  background: rgb(255, 255, 255);
  position: relative;
}

.flow.section::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 50% at 80% 20%, rgba(184, 151, 102, 0.07) 0%, transparent 70%),
    radial-gradient(ellipse 50% 40% at 10% 80%, rgba(28, 61, 54, 0.05) 0%, transparent 70%);
  pointer-events: none;
}

.flow-slider {
  position: relative;
  margin-top: 48px;
}

/* ---------- Tabs ---------- */
.flow-slider__tabs {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-bottom: 44px;
}

.flow-tab {
  font-family: var(--font-serif);
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  padding: 14px 22px;
  min-width: 72px;
  border: 1.5px solid var(--color-line);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.75);
  backdrop-filter: blur(6px);
  color: var(--color-text-light);
  font-size: 13px;
  letter-spacing: .06em;
  line-height: 1;
  transition: background .3s, color .3s, border-color .3s, transform .25s, box-shadow .3s;
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(28, 61, 54, 0.06);
}

.flow-tab__no {
  font-family: var(--font-en);
  font-weight: 700;
  font-size: 18px;
  letter-spacing: .04em;
  color: var(--color-primary);
  line-height: 1;
  transition: color .3s;
}

.flow-tab__label {
  font-size: 14px;
  letter-spacing: .14em;
  margin-top: 2px;
}

.flow-tab:hover {
  border-color: var(--color-accent);
  color: var(--color-primary);
  background: rgba(255, 255, 255, 0.95);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(184, 151, 102, 0.18);
}

.flow-tab.is-active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
  box-shadow: 0 6px 24px rgba(28, 61, 54, 0.28);
  transform: translateY(-2px);
}

.flow-tab.is-active .flow-tab__no {
  color: var(--color-accent);
}

.flow-tab.is-active .flow-tab__label {
  color: rgba(255, 255, 255, 0.9);
}

/* ---------- Viewport & Track ---------- */
.flow-slider__viewport {
  overflow: hidden;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  box-shadow: 0 8px 48px rgba(28, 61, 54, 0.10), 0 1px 0 rgba(184, 151, 102, 0.2) inset;
  border: 1px solid rgba(184, 151, 102, 0.15);
  position: relative;
}

/* Gold top accent line */
.flow-slider__viewport::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, transparent 0%, var(--color-accent) 30%, var(--color-accent-dark) 60%, transparent 100%);
  border-radius: 16px 16px 0 0;
  z-index: 1;
}

.flow-slider__track {
  display: flex;
  align-items: stretch;
  transition: transform .55s cubic-bezier(.22, .61, .36, 1);
  margin: 0;
  padding: 0;
  list-style: none;
}

.flow-slide {
  flex: 0 0 100%;
  min-width: 0;
  padding: 52px 60px;
  box-sizing: border-box;
}

/* ---------- Two-column layout (3:2) ---------- */
.flow-slide__inner {
  display: flex;
  gap: 48px;
  align-items: flex-start;
}

.flow-slide__text {
  flex: 3;
}

.flow-slide__image {
  flex: 2;
  border-radius: 12px;
  overflow: hidden;
  flex-shrink: 0;
}

.flow-slide__image img {
  width: 100%;
  height: auto;
  display: block;
  transition: transform .6s ease;
}

.flow-slide__image:hover img {
  transform: scale(1.02);
}

/* ---------- Step head ---------- */
.flow-slide .flow-step__head {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 24px;
  padding: 12px 20px;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-soft) 100%);
  border-radius: 8px;
  border-bottom: none;
  box-shadow: 0 4px 12px rgba(28, 61, 54, 0.08);
  width: 100%;
  box-sizing: border-box;
}

/* Step number badge – override style.css absolute positioning */
.flow-slide .flow-step__no {
  position: relative !important;
  left: auto !important;
  top: auto !important;
  background: var(--color-accent);
  color: var(--color-primary);
  border-radius: 6px;
  padding: 4px 12px;
  font-family: var(--font-en);
  font-size: 16px;
  font-weight: 700;
  flex-shrink: 0;
  letter-spacing: .04em;
  width: auto !important;
  height: auto !important;
  display: inline-flex !important;
  align-items: center;
  justify-content: center;
  line-height: 1;
  box-shadow: none !important;
}

/* Corner accent dot */
.flow-slide .flow-step__no::after {
  display: none;
}

.flow-slide h3 {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 600;
  letter-spacing: .06em;
  color: #fff;
  margin: 0;
  line-height: 1.4;
}

.flow-slide p {
  margin: 0;
  font-size: 18px;
  line-height: 2.1;
  color: var(--color-text);
}

/* ---------- Arrows ---------- */
.flow-slider__arrows {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 20px;
  margin-top: 36px;
}

.flow-slider__arrow {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-soft) 100%);
  color: #fff;
  font-size: 22px;
  line-height: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 0;
  cursor: pointer;
  transition: background .3s, transform .25s, opacity .25s, box-shadow .3s;
  box-shadow: 0 4px 16px rgba(28, 61, 54, 0.22);
}

.flow-slider__arrow:hover:not(:disabled) {
  background: linear-gradient(135deg, var(--color-accent-dark) 0%, var(--color-accent) 100%);
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(184, 151, 102, 0.32);
}

.flow-slider__arrow:disabled {
  opacity: .2;
  cursor: not-allowed;
}

/* ---------- Counter ---------- */
.flow-slider__counter {
  font-family: var(--font-en);
  font-size: 14px;
  letter-spacing: .12em;
  color: var(--color-text-light);
  display: inline-flex;
  align-items: baseline;
  min-width: 72px;
  justify-content: center;
  gap: 2px;
}

.flow-slider__counter-current {
  font-size: 28px;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1;
}

.flow-slider__counter-sep {
  margin: 0 6px;
  opacity: .4;
  font-size: 16px;
}

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .flow-slide {
    padding: 40px 40px;
  }

  .flow-slide__inner {
    gap: 32px;
  }
}

@media (max-width: 768px) {
  .flow-slider__tabs {
    gap: 8px;
    margin-bottom: 28px;
  }

  .flow-tab {
    padding: 10px 14px;
    min-width: 58px;
  }

  .flow-tab__no {
    font-size: 15px;
  }

  .flow-tab__label {
    font-size: 11px;
  }

  .flow-slide {
    padding: 36px 24px;
  }

  .flow-slide__inner {
    flex-direction: column;
    gap: 24px;
    align-items: stretch;
  }

  .flow-slide .flow-step__head {
    padding: 10px 16px;
    gap: 12px;
    margin-bottom: 20px;
  }

  .flow-slide .flow-step__no {
    font-size: 14px;
    padding: 3px 10px;
    width: auto !important;
    height: auto !important;
    border-radius: 4px;
  }

  .flow-slide h3 {
    font-size: 16px;
  }

  .flow-slide p {
    font-size: 14px;
    line-height: 1.95;
  }

  .flow-slider__arrow {
    width: 46px;
    height: 46px;
    font-size: 20px;
  }

  .flow-slider__counter-current {
    font-size: 22px;
  }
}