/*
 * roadmap.css — 学習ロードマップ (issue #70)
 *
 * Scoped entirely under `.roadmap-page`. The page body carries `zone-free`
 * (teal palette); we re-declare a blue (#2563EB) + gold token set directly on
 * the wrapper so it wins over the inherited zone-free tokens WITHOUT !important
 * (same technique .course-detail uses in css/single-course.css).
 *
 * Companion template: roadmap.php
 *   LIST view classes:   roadmap-index__*
 *   DETAIL view classes: roadmap-detail__*
 *   Shared:              roadmap-page__container / roadmap-page__cta-gold
 */

.roadmap-page{
  --color-primary:#1E40AF; --color-accent:#2563EB; --color-accent-light:#93C5FD;
  --color-accent-bg:#EFF6FF; --color-secondary:#FACC15; --color-secondary-bg:#FEF9C3;
  --color-bg:#F8FAFC; --color-surface:#FFFFFF; --color-border:#E2E8F0;
  --color-text-primary:#0F172A; --color-text-body:#334155; --color-text-secondary:#475569; --color-text-muted:#94A3B8;
  --zone-accent-primary:#2563EB; --zone-accent-secondary:#FACC15;
  --zone-radius-card:16px; --zone-radius-button:999px;
  --shadow-card:0 8px 24px rgba(37,99,235,0.10);
  --rm-gold:#F2A93B; --rm-gold-bg:#FEF6E3; --rm-gold-strong:#E08A1E; /* CTA gold/amber */
  --rm-done:#15803D; --rm-done-bg:#DCFCE7;   /* 学習済 (green) */
  --rm-current:#2563EB; --rm-current-bg:#EFF6FF; /* 学習中 (blue) */
  --rm-muted:#64748B; --rm-muted-bg:#F1F5F9; /* これから (muted) */

  background: var(--color-bg);
  color: var(--color-text-body);
  font-family: var(--font-family-base);
}

/* ---- shared primitives ---- */
.roadmap-page__container{
  max-width: var(--container-max, 1200px);
  margin: 0 auto;
  padding-left: var(--space-6);
  padding-right: var(--space-6);
}

/* ---- Gold CTA (warm amber, dark text — NOT blue) ---- */
.roadmap-page__cta-gold{
  display: inline-block;
  background: var(--rm-gold);
  color: #1F2937;
  font-size: var(--text-body);
  font-weight: var(--weight-bold);
  padding: 13px 28px;
  border-radius: var(--zone-radius-button);
  border: none;
  text-decoration: none;
  text-align: center;
  line-height: 1.4;
  box-shadow: 0 6px 16px rgba(224, 138, 30, 0.28);
  transition: background 0.2s, transform 0.15s;
}
.roadmap-page__cta-gold:hover{
  background: var(--rm-gold-strong);
  color: #1F2937;
  transform: translateY(-1px);
}

/* ===========================================================
 * Breadcrumb (shared markup, prefixed per view)
 * =========================================================== */
.roadmap-index__breadcrumb,
.roadmap-detail__breadcrumb{
  padding: var(--space-4) 0 0;
  font-size: var(--text-caption);
}
.roadmap-index__crumbs,
.roadmap-detail__crumbs{
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
  list-style: none;
  margin: 0;
  padding: 0;
}
.roadmap-index__crumbs a,
.roadmap-detail__crumbs a{
  color: var(--color-text-secondary);
  text-decoration: none;
}
.roadmap-index__crumbs a:hover,
.roadmap-detail__crumbs a:hover{ color: var(--color-accent); text-decoration: underline; }
.roadmap-index__crumb-sep,
.roadmap-detail__crumb-sep{ color: var(--color-text-muted); }
.roadmap-index__crumb-current,
.roadmap-detail__crumb-current{
  color: var(--color-text-primary);
  font-weight: var(--weight-semibold);
}

/* ===========================================================
 * Hero (shared style, prefixed per view)
 * =========================================================== */
.roadmap-index__hero,
.roadmap-detail__hero{
  padding-top: var(--space-8);
}
.roadmap-index__eyebrow,
.roadmap-detail__eyebrow{
  display: inline-block;
  font-size: var(--text-caption);
  font-weight: var(--weight-bold);
  letter-spacing: 0.12em;
  color: var(--color-accent);
  background: var(--color-accent-bg);
  padding: 6px 14px;
  border-radius: var(--radius-pill);
}
.roadmap-index__title,
.roadmap-detail__title{
  font-size: clamp(26px, 3.4vw, 38px);
  font-weight: var(--weight-bold);
  line-height: 1.3;
  color: var(--color-text-primary);
  margin: var(--space-4) 0 var(--space-3);
}
.roadmap-index__sub,
.roadmap-detail__intro{
  font-size: clamp(15px, 1.6vw, 18px);
  color: var(--color-text-secondary);
  line-height: var(--leading-normal);
  margin: 0;
  max-width: 64ch;
}

/* ===========================================================
 * LIST view — roadmap-index__*
 * =========================================================== */
.roadmap-index{
  padding-bottom: clamp(48px, 6vw, 88px);
}
.roadmap-index__hero{
  margin-bottom: clamp(28px, 4vw, 48px);
}
.roadmap-index__grid{
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(20px, 2.4vw, 28px);
  list-style: none;
  margin: 0;
  padding: 0;
}
.roadmap-index__item{ min-width: 0; }

.roadmap-index__card{
  display: flex;
  flex-direction: column;
  height: 100%;
  padding: var(--space-6);
  text-decoration: none;
  color: inherit;
  transition: transform 0.15s, box-shadow 0.2s, border-color 0.2s;
}
.roadmap-index__card:hover{
  transform: translateY(-3px);
  box-shadow: var(--shadow-card);
  border-color: var(--color-accent-light);
}
.roadmap-index__card-eyebrow{
  display: inline-block;
  align-self: flex-start;
  font-size: var(--text-tiny);
  font-weight: var(--weight-bold);
  letter-spacing: 0.1em;
  color: var(--color-accent);
  background: var(--color-accent-bg);
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  margin-bottom: var(--space-3);
}
.roadmap-index__card-title{
  font-size: var(--text-h3);
  font-weight: var(--weight-bold);
  color: var(--color-text-primary);
  line-height: var(--leading-tight);
  margin: 0 0 var(--space-2);
}
.roadmap-index__card-period{
  font-size: var(--text-caption);
  color: var(--color-text-secondary);
  margin: 0 0 var(--space-3);
}
.roadmap-index__card-meta{
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-caption);
  font-weight: var(--weight-semibold);
  color: var(--color-text-primary);
  margin: 0 0 var(--space-4);
  padding: var(--space-3) 0;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}
.roadmap-index__card-meta-sep{ color: var(--color-text-muted); }

.roadmap-index__steps{
  list-style: none;
  margin: 0 0 var(--space-5);
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.roadmap-index__step{
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
  font-size: var(--text-caption);
  line-height: var(--leading-normal);
  color: var(--color-text-body);
}
.roadmap-index__step-num{
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  border-radius: var(--radius-circle);
  background: var(--color-accent-bg);
  color: var(--color-accent);
  font-size: var(--text-tiny);
  font-weight: var(--weight-bold);
  margin-top: 1px;
}
.roadmap-index__step-title{ min-width: 0; }
.roadmap-index__step--more{
  font-size: var(--text-small);
  color: var(--color-text-muted);
  font-weight: var(--weight-semibold);
  padding-left: 30px;
}

.roadmap-index__card-cta{
  margin-top: auto;
  display: block;
  width: 100%;
}

/* ===========================================================
 * DETAIL view — roadmap-detail__*
 * =========================================================== */
.roadmap-detail{
  padding-bottom: clamp(48px, 6vw, 88px);
}
.roadmap-detail__period{
  font-size: var(--text-body);
  color: var(--color-text-secondary);
  font-weight: var(--weight-semibold);
  margin: 0 0 var(--space-5);
}
.roadmap-detail__meta-row{
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4) var(--space-8);
  list-style: none;
  margin: 0 0 var(--space-5);
  padding: var(--space-5) 0;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}
.roadmap-detail__meta-item{
  display: flex;
  align-items: center;
  gap: var(--space-2);
}
.roadmap-detail__meta-icon{ font-size: 18px; line-height: 1; }
.roadmap-detail__meta-value{
  font-size: var(--text-body);
  font-weight: var(--weight-bold);
  color: var(--color-text-primary);
}
.roadmap-detail__intro{ margin-bottom: var(--space-6); }

/* Gold CTA banner */
.roadmap-detail__cta-banner{
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-5);
  background: var(--rm-gold-bg);
  border: 1px solid #F4D9A5;
  border-radius: var(--zone-radius-card);
  padding: clamp(18px, 2.4vw, 28px);
}
.roadmap-detail__cta-banner-copy{ min-width: 0; }
.roadmap-detail__cta-banner-head{
  font-size: clamp(16px, 1.8vw, 19px);
  font-weight: var(--weight-bold);
  color: #7A4A12;
  margin: 0 0 var(--space-1);
}
.roadmap-detail__cta-banner-sub{
  font-size: var(--text-caption);
  color: #8A5A20;
  margin: 0;
  line-height: var(--leading-normal);
}
.roadmap-detail__cta-banner-action{
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-2);
}

/* Section */
.roadmap-detail__section{
  margin-top: clamp(40px, 5vw, 64px);
}
.roadmap-detail__section-title{
  font-size: clamp(20px, 2.4vw, 26px);
  font-weight: var(--weight-bold);
  color: var(--color-text-primary);
  line-height: var(--leading-tight);
  margin: 0 0 var(--space-6);
}

/* ---- Ordered step list with timeline rail ---- */
.roadmap-detail__steps{
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}
/* vertical timeline line behind the step numbers */
.roadmap-detail__steps::before{
  content: "";
  position: absolute;
  top: 22px;
  bottom: 22px;
  left: 21px;
  width: 2px;
  background: var(--color-border);
  z-index: 0;
}
.roadmap-detail__step{
  position: relative;
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  align-items: start;
  gap: var(--space-4);
}
.roadmap-detail__step-num{
  position: relative;
  z-index: 1;
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-circle);
  background: var(--color-primary);
  color: #fff;
  font-weight: var(--weight-bold);
  font-size: var(--text-h3);
  box-shadow: 0 0 0 4px var(--color-bg);
}
.roadmap-detail__step--done .roadmap-detail__step-num{ background: var(--rm-done); }
.roadmap-detail__step--current .roadmap-detail__step-num{ background: var(--rm-current); }
.roadmap-detail__step--locked .roadmap-detail__step-num{ background: var(--rm-muted); }

.roadmap-detail__step-card{
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-4) var(--space-5);
  min-width: 0;
}
.roadmap-detail__step--current .roadmap-detail__step-card{
  border-color: var(--color-accent-light);
  box-shadow: var(--shadow-card);
}

.roadmap-detail__step-thumb{
  flex: 0 0 auto;
  display: block;
  position: relative;
  width: 132px;
  aspect-ratio: 16 / 9;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: linear-gradient(135deg, #0D1B2A, #1a3a5c);
}
.roadmap-detail__step-img{
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.roadmap-detail__step-placeholder{
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  color: rgba(255,255,255,0.75);
}

.roadmap-detail__step-body{
  flex: 1 1 auto;
  min-width: 0;
}
.roadmap-detail__step-head{
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-1);
}
.roadmap-detail__step-label{
  font-size: var(--text-tiny);
  font-weight: var(--weight-bold);
  letter-spacing: 0.06em;
  color: var(--color-text-muted);
}
.roadmap-detail__chip{
  display: inline-block;
  font-size: var(--text-tiny);
  font-weight: var(--weight-bold);
  padding: 2px 10px;
  border-radius: var(--radius-pill);
}
.roadmap-detail__chip--done{ background: var(--rm-done-bg); color: var(--rm-done); }
.roadmap-detail__chip--current{ background: var(--rm-current-bg); color: var(--rm-current); }
.roadmap-detail__chip--locked{ background: var(--rm-muted-bg); color: var(--rm-muted); }

.roadmap-detail__step-title{
  font-size: var(--text-body);
  font-weight: var(--weight-bold);
  color: var(--color-text-primary);
  line-height: var(--leading-tight);
  margin: 0 0 2px;
}
.roadmap-detail__step-title a{ color: inherit; text-decoration: none; }
.roadmap-detail__step-title a:hover{ color: var(--color-accent); text-decoration: underline; }
.roadmap-detail__step-meta{
  font-size: var(--text-tiny);
  font-weight: var(--weight-semibold);
  color: var(--color-text-muted);
  font-variant-numeric: tabular-nums;
  margin: 0 0 var(--space-2);
}
.roadmap-detail__step-link{
  font-size: var(--text-caption);
  font-weight: var(--weight-semibold);
  color: var(--color-accent);
  text-decoration: none;
}
.roadmap-detail__step-link:hover{ text-decoration: underline; }

/* ---- empty states ---- */
.roadmap-index__empty,
.roadmap-detail__empty{
  margin: clamp(32px, 5vw, 56px) 0;
  font-size: var(--text-body);
  color: var(--color-text-secondary);
}
.roadmap-index__empty a,
.roadmap-detail__empty a{
  color: var(--color-accent);
  font-weight: var(--weight-semibold);
}

/* ===========================================================
 * Responsive
 * =========================================================== */
@media (max-width: 960px){
  .roadmap-index__grid{
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 680px){
  .roadmap-index__grid{
    grid-template-columns: 1fr;
  }
  /* detail: drop the timeline rail and stack the step rows cleanly */
  .roadmap-detail__steps::before{ display: none; }
  .roadmap-detail__step{
    grid-template-columns: 1fr;
    gap: var(--space-2);
  }
  .roadmap-detail__step-num{
    box-shadow: none;
    width: 38px;
    height: 38px;
    font-size: var(--text-body);
  }
  .roadmap-detail__step-card{
    flex-direction: column;
    align-items: stretch;
  }
  .roadmap-detail__step-thumb{
    width: 100%;
  }
  .roadmap-detail__cta-banner{
    flex-direction: column;
    align-items: stretch;
  }
  .roadmap-detail__cta-banner-action{
    align-items: stretch;
  }
  .roadmap-page__cta-gold{ width: 100%; }
}