/* ============================================================
   PERIPATOS — Courses Hub (PERI-Y-244)
   Scoped under .courses-hub to avoid theme collisions.
   既存看護LP/医学部LP のデザイントークンと整合：
     #313131 base / #0B8A80 accent / Noto Serif JP / Noto Sans JP
   既存LP signature: H2 下部の 56×3px accent bar (.section__title::after)
   ============================================================ */

.courses-hub {
  --color-base: #313131;
  --color-base-soft: #4A4A4A;
  --color-base-mute: #8A8A8A;
  --color-line: #E5E5E5;
  --color-line-soft: #EFEFEF;
  --color-bg: #FFFFFF;
  --color-bg-alt: #F7FAF9;
  --color-accent: #0B8A80;
  --color-accent-hover: #14998A;
  --color-accent-deep: #076B63;
  --color-accent-soft: #E2F2EF;

  --font-sans: "Noto Sans JP", -apple-system, BlinkMacSystemFont, "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;
  --font-serif: "Noto Serif JP", "Hiragino Mincho ProN", "Yu Mincho", serif;
  --maxw: 1100px;

  --radius: 6px;
  --shadow-soft: 0 1px 2px rgba(20, 20, 20, 0.04), 0 8px 24px rgba(20, 20, 20, 0.05);
  --space-section: clamp(4rem, 3rem + 4vw, 7rem);

  font-family: var(--font-sans);
  color: var(--color-base);
  background: var(--color-bg);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-feature-settings: "palt";
  word-break: break-word;
}

.courses-hub *,
.courses-hub *::before,
.courses-hub *::after { box-sizing: border-box; }

.courses-hub a { color: inherit; text-decoration: none; }

.courses-hub a:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: 2px;
}

.courses-hub h1,
.courses-hub h2,
.courses-hub h3,
.courses-hub p,
.courses-hub ul { margin: 0; padding: 0; }

.courses-hub ul { list-style: none; }

.courses-hub__container {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ===== Section 01 — Hero ==================================== */
.courses-hub__hero,
.courses-hub__hero .courses-hub__container,
.courses-hub__hero h1,
.courses-hub__hero p {
  text-align: center !important;
}
.courses-hub__hero {
  padding: var(--space-section) 0 calc(var(--space-section) * 0.75);
  border-bottom: 1px solid var(--color-line);
}

.courses-hub__h1 {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(2.5rem, 5vw, 4.5rem);
  line-height: 1.2;
  letter-spacing: 0.06em;
  margin-bottom: 1.5rem;
  color: var(--color-base);
}

.courses-hub__lead {
  font-size: 1.0625rem;
  line-height: 1.95;
  color: var(--color-base-soft);
  max-width: 640px;
  margin: 0 auto;
  text-wrap: pretty;
  text-align: center !important;
}

/* ===== Shared Section Title (looks_at 看護LP signature) ===== */
/* Section title with 56×3px accent bar — matches /nursing/ /medical/ */
.courses-hub .section__title {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(1.75rem, 1.3rem + 1.8vw, 2.5rem);
  line-height: 1.4;
  letter-spacing: 0.04em;
  text-align: center;
  color: var(--color-base);
  position: relative;
  padding-bottom: 1rem;
  margin-bottom: 3rem;
}
.courses-hub .section__title::after {
  content: "";
  display: block;
  width: 56px;
  height: 3px;
  background: var(--color-accent);
  margin: 0.9rem auto 0;
  border-radius: 2px;
}

/* ===== Section 02 — Tiles =================================== */
.courses-hub__tiles {
  padding: var(--space-section) 0;
}

.courses-hub__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.courses-hub__grid-item { display: flex; }

.course-tile {
  display: flex;
  flex: 1;
  background: var(--color-bg);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
  position: relative;
  min-height: 260px;
}

.course-tile__inner {
  display: flex;
  flex-direction: column;
  width: 100%;
  padding: 32px;
  gap: 20px;
  text-align: center;
}

.course-tile__head {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.course-tile__target {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--color-base-mute);
  font-weight: 500;
}

.course-tile__name {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 1.5rem; /* 24px */
  line-height: 1.4;
  letter-spacing: 0.03em;
  color: var(--color-base);
  word-break: break-word;
}

.course-tile__sub {
  font-size: 0.7em;
  font-weight: 500;
  color: var(--color-base-soft);
  margin-left: 2px;
}

.course-tile__essence {
  font-size: 14px;
  line-height: 1.85;
  color: var(--color-base-soft);
  flex: 1;
  text-wrap: pretty;
  word-break: break-word;
}

.course-tile__foot {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--color-line-soft);
  text-align: center;
}

.course-tile__price {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 8px;
}

.course-tile__price-label {
  font-size: 11px;
  color: var(--color-base-mute);
  letter-spacing: 0.08em;
}

.course-tile__price-value {
  font-family: var(--font-serif);
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-base);
  letter-spacing: 0.02em;
}

.course-tile__cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 13px;
  color: var(--color-accent);
  font-weight: 500;
  letter-spacing: 0.04em;
}

.course-tile__arrow {
  transition: transform 0.2s ease;
  display: inline-block;
}

/* Hover: desktop only */
@media (hover: hover) and (pointer: fine) {
  .course-tile:hover {
    border-color: var(--color-accent);
    box-shadow: var(--shadow-soft);
    transform: translateY(-2px);
  }
  .course-tile:hover .course-tile__arrow { transform: translateX(4px); }
  .course-tile:hover .course-tile__name { color: var(--color-accent); }
}

.course-tile:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 4px;
}

/* ===== Section 03 — Consultation ============================ */
.courses-hub__consult,
.courses-hub__consult .courses-hub__container,
.courses-hub__consult h2,
.courses-hub__consult p {
  text-align: center !important;
}
.courses-hub__consult {
  padding: var(--space-section) 0;
  background: var(--color-bg-alt);
  border-top: 1px solid var(--color-line);
}

.courses-hub__consult-lead {
  font-size: 1rem;
  line-height: 1.95;
  color: var(--color-base-soft);
  max-width: 560px;
  margin: 0 auto 2.5rem;
  text-wrap: pretty;
  text-align: center !important;
}

.courses-hub__consult-cta-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.25rem;
}

/* Primary CTA — looks_at 看護LP `.btn--primary` 既存パターン整合 */
.courses-hub__consult-cta {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  background: var(--color-accent);
  color: #FFFFFF !important;
  padding: 1rem 2.5rem;
  border-radius: var(--radius);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  min-height: 48px;
  border: 2px solid var(--color-accent);
  transition: background 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
  text-decoration: none;
}

.courses-hub__consult-cta:hover {
  background: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
  transform: translateY(-2px);
  text-decoration: none;
}

.courses-hub__consult-arrow { transition: transform 0.2s ease; }
.courses-hub__consult-cta:hover .courses-hub__consult-arrow { transform: translateX(4px); }

.courses-hub__consult-note {
  font-size: 12px;
  color: var(--color-base-mute);
  letter-spacing: 0.04em;
  margin: 0;
}

.courses-hub__br-md { display: none; }

@media (min-width: 700px) {
  .courses-hub__br-md { display: inline; }
}

/* ============================================================
   RESPONSIVE
   ============================================================ */

/* 900–1099px : 2 cols */
@media (max-width: 1099px) {
  .courses-hub__grid { grid-template-columns: repeat(2, 1fr); }
}

/* 600–899px : 2 cols, tighter */
@media (max-width: 899px) {
  .course-tile__inner { padding: 28px; }
}

/* ≤599px : 1 col, mobile spacing */
@media (max-width: 599px) {
  .courses-hub__container {
    padding-left: 1rem;
    padding-right: 1rem;
  }
  .courses-hub__hero {
    padding: 4rem 0 3rem;
  }
  .courses-hub__h1 {
    margin-bottom: 1rem;
  }
  .courses-hub__lead {
    font-size: 0.95rem;
    line-height: 1.85;
  }
  .courses-hub__tiles,
  .courses-hub__consult {
    padding: 3.5rem 0 4rem;
  }
  .courses-hub .section__title {
    margin-bottom: 2rem;
  }
  .courses-hub__grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .course-tile { min-height: auto; }
  .course-tile__inner {
    padding: 24px;
    gap: 16px;
  }
  .course-tile__name { font-size: 1.25rem; }
  .course-tile__essence { font-size: 13.5px; }
  .course-tile__foot { padding-top: 14px; }
  .courses-hub__consult-cta {
    padding: 1rem 2rem;
    font-size: 0.9375rem;
    width: 100%;
    max-width: 360px;
    justify-content: center;
  }
}

/* ≤419px : tightest */
@media (max-width: 419px) {
  .course-tile__inner {
    padding: 20px;
    gap: 14px;
  }
  .course-tile__name { font-size: 1.15rem; }
}