/* ==============================================
   pa.css
   OFFBEAT Sound Engineering / PA Page Styles
   ============================================== */

/* ----------------------------------------------
   Inner Page Base（drum-school.cssと共通）
   ---------------------------------------------- */
.ob-inner-page {
  --bg: #f7f7f5;
  --paper: #ffffff;
  --text: #222222;
  --muted: #666666;
  --line: rgba(0, 0, 0, .08);
  --accent: #EFA25C;
  --accent-light: rgba(239, 162, 92, .12);
  --accent-border: rgba(239, 162, 92, .6);
  background: var(--bg);
  color: var(--text);
}

/* ----------------------------------------------
   Inner Hero
   ---------------------------------------------- */
.ob-inner-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(80px, 12vw, 140px) 24px clamp(60px, 8vw, 100px);
  border-bottom: 1px solid var(--line);
}

.ob-inner-hero__inner {
  position: relative;
  z-index: 2;
  max-width: 1280px;
  margin: 0 auto;
}

.ob-inner-hero__label {
  font-family: 'Space Grotesk', monospace;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .12em;
  color: var(--accent);
  margin: 0 0 20px;
}

.ob-inner-hero__title {
  font-family: 'Bebas Neue', sans-serif;
  font-size: clamp(60px, 11vw, 160px);
  line-height: .92;
  letter-spacing: .03em;
  margin: 0 0 clamp(24px, 4vw, 40px);
  font-weight: 400;
  color: var(--text);
}

.ob-inner-hero__title--accent {
  color: var(--accent);
}

.ob-inner-hero__sub {
  font-size: clamp(15px, 2vw, 18px);
  color: var(--muted);
  line-height: 1.9;
  margin: 0;
}

.ob-inner-hero__bg-text {
  position: absolute;
  right: -20px;
  top: 50%;
  transform: translateY(-50%);
  font-family: 'Bebas Neue', sans-serif;
  font-size: clamp(180px, 30vw, 420px);
  line-height: 1;
  color: rgba(0, 0, 0, .04);
  pointer-events: none;
  user-select: none;
  z-index: 1;
  white-space: nowrap;
}

/* ----------------------------------------------
   Section utility
   ---------------------------------------------- */
.ob-section--gray {
  background: rgba(0, 0, 0, .02);
}

/* ----------------------------------------------
   Features Grid（drum-school.cssと同じ構成）
   ---------------------------------------------- */
.ob-features {
  max-width: 1280px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2px;
  border: 1px solid var(--line);
  border-radius: 16px;
  overflow: hidden;
  background: var(--line);
}

.ob-feature {
  display: flex;
  gap: 20px;
  padding: clamp(28px, 4vw, 40px);
  background: var(--paper);
  transition: background .2s ease;
}

.ob-feature:hover {
  background: rgba(239, 162, 92, .04);
}

.ob-feature__icon {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--accent-light);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
}

.ob-feature__title {
  font-size: 16px;
  font-weight: 700;
  margin: 0 0 10px;
  letter-spacing: .04em;
}

.ob-feature__text {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.8;
  margin: 0;
}

/* ----------------------------------------------
   Equipment List
   ---------------------------------------------- */
.ob-equipment {
  max-width: 1280px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: 16px;
  overflow: hidden;
}

.ob-equip-group {
  background: var(--paper);
  padding: clamp(24px, 3vw, 36px);
  transition: background .2s ease;
}

.ob-equip-group:hover {
  background: rgba(239, 162, 92, .03);
}

.ob-equip-group__title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: 'Space Grotesk', monospace;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .14em;
  color: var(--accent);
  margin: 0 0 20px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}

.ob-equip-group__title svg {
  flex-shrink: 0;
  opacity: .8;
}

.ob-equip-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.ob-equip-list li {
  font-size: 13px;
  color: var(--text);
  line-height: 1.5;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.ob-equip-list li::before {
  content: "—";
  color: var(--accent);
  font-weight: 700;
  flex-shrink: 0;
  font-size: 12px;
}

.ob-equip-tag {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .06em;
  color: var(--muted);
  background: rgba(0, 0, 0, .04);
  border-radius: 4px;
  padding: 2px 7px;
}

/* ----------------------------------------------
   PA Plans / Pricing
   ---------------------------------------------- */
.ob-pa-plans {
  max-width: 860px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.ob-pa-plan {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 32px 28px;
  transition: all .3s ease;
}

.ob-pa-plan:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, .08);
}

.ob-pa-plan--featured {
  border-color: var(--accent-border);
  background: linear-gradient(145deg, #fff 50%, rgba(239, 162, 92, .06) 100%);
  box-shadow: 0 8px 32px rgba(239, 162, 92, .12);
}

.ob-pa-plan__scale {
  font-family: 'Bebas Neue', sans-serif;
  font-size: 28px;
  letter-spacing: .06em;
  color: var(--text);
  margin-bottom: 4px;
}

.ob-pa-plan--featured .ob-pa-plan__scale {
  color: var(--accent);
}

.ob-pa-plan__desc {
  font-size: 13px;
  color: var(--muted);
  margin: 0 0 24px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--line);
}

.ob-pa-plan__rows {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.ob-pa-plan__row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 16px;
  background: rgba(0, 0, 0, .02);
  border-radius: 10px;
  flex-wrap: wrap;
}

.ob-pa-plan__row--accent {
  background: var(--accent-light);
}

.ob-pa-plan__type {
  font-size: 13px;
  font-weight: 600;
  color: var(--muted);
}

.ob-pa-plan__row--accent .ob-pa-plan__type {
  color: var(--text);
}

.ob-pa-plan__price {
  font-family: 'Bebas Neue', sans-serif;
  font-size: 28px;
  letter-spacing: .04em;
  color: var(--text);
  line-height: 1;
}

.ob-pa-plan__row--accent .ob-pa-plan__price {
  color: var(--accent);
}

.ob-pa-plan__tax {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 14px;
  color: var(--muted);
}

.ob-pa-note {
  max-width: 860px;
  margin: 24px auto 0;
  font-size: 12px;
  color: var(--muted);
  line-height: 1.9;
}

/* ----------------------------------------------
   FAQ Accordion
   ---------------------------------------------- */
.ob-faqs {
  max-width: 800px;
  margin: 0 auto;
  border: 1px solid var(--line);
  border-radius: 16px;
  overflow: hidden;
}

.ob-faq {
  border-bottom: 1px solid var(--line);
  background: var(--paper);
  transition: background .2s ease;
}

.ob-faq:last-child {
  border-bottom: none;
}

.ob-faq[open] {
  background: rgba(239, 162, 92, .04);
}

.ob-faq__q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 22px 28px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  letter-spacing: .02em;
  transition: color .2s ease;
}

.ob-faq__q::-webkit-details-marker {
  display: none;
}

.ob-faq__q::after {
  content: "+";
  font-family: 'Bebas Neue', sans-serif;
  font-size: 24px;
  color: var(--accent);
  flex-shrink: 0;
  transition: transform .3s ease;
}

.ob-faq[open] .ob-faq__q::after {
  transform: rotate(45deg);
}

.ob-faq__q:hover {
  color: var(--accent);
}

.ob-faq__a {
  padding: 0 28px 22px;
  margin: 0;
  font-size: 14px;
  color: var(--muted);
  line-height: 1.9;
}

/* ----------------------------------------------
   CTA (Dark)
   ---------------------------------------------- */
.ob-cta {
  background: var(--text);
  padding: clamp(60px, 10vw, 100px) 24px;
  text-align: center;
}

.ob-cta__inner {
  max-width: 700px;
  margin: 0 auto;
}

.ob-cta__label {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .12em;
  color: var(--accent);
  margin: 0 0 20px;
}

.ob-cta__title {
  font-family: 'Bebas Neue', sans-serif;
  font-size: clamp(48px, 8vw, 80px);
  letter-spacing: .04em;
  color: #fff;
  margin: 0 0 20px;
  font-weight: 400;
}

.ob-cta__text {
  font-size: 15px;
  color: rgba(255, 255, 255, .6);
  line-height: 1.8;
  margin: 0 0 40px;
}

.ob-cta__btns {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.ob-cta .ob-btn {
  background: transparent;
  border-color: rgba(255, 255, 255, .2);
  color: #fff;
}

.ob-cta .ob-btn:hover {
  border-color: rgba(255, 255, 255, .5);
  background: rgba(255, 255, 255, .08);
}

.ob-cta .ob-btn--accent {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.ob-cta .ob-btn--accent:hover {
  background: #d4863e;
  border-color: #d4863e;
}

.ob-cta .ob-btn--line {
  background: rgba(239, 162, 92, .15);
  border-color: var(--accent-border);
  color: var(--accent);
}

.ob-btn--accent {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.ob-btn--accent:hover {
  background: #d4863e;
  border-color: #d4863e;
  color: #fff;
}

/* ----------------------------------------------
   Responsive
   ---------------------------------------------- */
@media (max-width: 1024px) {
  .ob-equipment {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 899px) {
  .ob-features {
    grid-template-columns: 1fr;
  }

  .ob-pa-plans {
    grid-template-columns: 1fr;
    max-width: 480px;
  }
}

@media (max-width: 640px) {
  .ob-inner-hero__bg-text {
    opacity: .5;
  }

  .ob-equipment {
    grid-template-columns: 1fr;
  }

  .ob-faq__q {
    padding: 18px 20px;
  }

  .ob-faq__a {
    padding: 0 20px 18px;
  }

  .ob-pa-plan__row {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }
}