/* Mugen Dojo — page layout & components */

/* ─────────────────────────── Header ─────────────────────────── */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px var(--pad-x);
  background: rgba(255,255,255,0.85);
  backdrop-filter: saturate(140%) blur(14px);
  -webkit-backdrop-filter: saturate(140%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color .3s var(--ease);
}
.site-header.scrolled { border-bottom-color: var(--c-line); }

.brand {
  display: flex;
  align-items: baseline;
  gap: 10px;
  letter-spacing: 0.02em;
}
.brand-mark {
  font-family: var(--f-en);
  font-weight: 300;
  font-size: 22px;
  letter-spacing: 0;
  color: var(--c-text);
}
.brand-mark .infinity { font-weight: 200; font-size: 26px; vertical-align: -1px; }
.brand-jp {
  font-size: 11px;
  color: var(--c-text-sub);
  letter-spacing: 0.18em;
}

.nav-main {
  display: flex;
  align-items: center;
  gap: clamp(16px, 2.4vw, 36px);
}
.nav-main a {
  font-size: 13px;
  color: var(--c-text);
  letter-spacing: 0.04em;
  position: relative;
  padding: 6px 0;
}
.nav-main a::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 1px;
  background: var(--c-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .35s var(--ease);
}
.nav-main a:hover::after { transform: scaleX(1); }
.nav-main a.nav-cta::after { display: none; }

/* Header CTA — refined: pill-thin with hairline border, accent only on the arrow */
.nav-main a.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  padding: 10px 18px 10px 20px;
  margin-left: 8px;
  border: 1px solid var(--c-text);
  border-radius: 999px;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--c-text);
  background: transparent;
  transition: background .25s var(--ease), color .25s var(--ease), border-color .25s var(--ease);
}
.nav-main a.nav-cta .arrow {
  display: inline-flex;
  width: 22px; height: 22px;
  align-items: center; justify-content: center;
  border-radius: 50%;
  background: var(--c-accent);
  color: #fff;
  font-size: 12px;
  transition: transform .25s var(--ease);
}
.nav-main a.nav-cta:hover { background: var(--c-text); color: #fff; border-color: var(--c-text); }
.nav-main a.nav-cta:hover .arrow { transform: translateX(2px); }

.btn-cta {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 22px;
  background: var(--c-accent);
  color: #fff;
  font-size: 13px;
  letter-spacing: 0.04em;
  border: none;
  border-radius: 999px;
  transition: background .25s var(--ease), transform .25s var(--ease);
}
.btn-cta:hover { background: var(--c-accent-2); transform: translateY(-1px); }
.btn-cta .arrow { transition: transform .25s var(--ease); }
.btn-cta:hover .arrow { transform: translateX(3px); }

.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 22px;
  background: transparent;
  color: var(--c-text);
  font-size: 13px;
  letter-spacing: 0.04em;
  border: 1px solid var(--c-text);
  border-radius: 999px;
  transition: background .25s var(--ease), color .25s var(--ease);
}
.btn-ghost:hover { background: var(--c-text); color: #fff; }

.btn-text {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--c-accent);
  font-size: 13px;
  letter-spacing: 0.04em;
  padding: 4px 0;
  border-bottom: 1px solid transparent;
  transition: border-color .25s var(--ease);
}
.btn-text:hover { border-bottom-color: var(--c-accent); }

/* Mobile nav */
.menu-toggle { display: none; background: none; border: none; padding: 8px; }
.menu-toggle span { display: block; width: 22px; height: 1px; background: var(--c-text); margin: 5px 0; transition: transform .3s var(--ease); }

@media (max-width: 900px) {
  .nav-main { display: none; }
  .menu-toggle { display: block; }
}

/* ─────────────────────────── Hero ─────────────────────────── */
.hero {
  position: relative;
  min-height: 100vh;
  padding: 140px var(--pad-x) 80px;
  display: grid;
  grid-template-rows: 1fr auto;
  gap: 60px;
  overflow: hidden;
}

.hero-blob {
  position: absolute;
  pointer-events: none;
  filter: blur(80px);
  opacity: 0.55;
  z-index: 0;
}
.hero-blob.b1 { width: 520px; height: 520px; right: -120px; top: 80px;
  background: radial-gradient(circle, #B6F1F7 0%, transparent 70%);
  animation: drift 16s ease-in-out infinite;
}
.hero-blob.b2 { width: 380px; height: 380px; left: 5vw; bottom: 5vh;
  background: radial-gradient(circle, #D9F8E9 0%, transparent 70%);
  animation: drift 22s ease-in-out infinite reverse;
}
@keyframes drift {
  0%,100% { transform: translate(0,0) scale(1); }
  50%     { transform: translate(40px,-30px) scale(1.08); }
}

.hero-eyebrow {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--c-text-sub);
  text-transform: uppercase;
}
.hero-eyebrow .line { width: 32px; height: 1px; background: var(--c-text-sub); }

.hero-title {
  position: relative;
  z-index: 1;
  font-size: var(--fs-h1);
  font-weight: 300;
  line-height: 1.18;
  letter-spacing: 0.02em;
  margin: 24px 0 0;
  max-width: 18ch;
  text-wrap: balance;
}
.hero-title em {
  font-style: normal;
  font-family: var(--f-en);
  font-weight: 200;
  color: var(--c-accent);
}
.hero-title .stroke {
  position: relative;
  display: inline-block;
}
.hero-title .stroke::after {
  content: "";
  position: absolute; left: -2px; right: -2px; bottom: 0.08em;
  height: 1px;
  background: var(--c-accent);
  transform-origin: left;
  animation: stroke-in 1.4s .5s var(--ease) both;
}
@keyframes stroke-in {
  from { transform: scaleX(0); } to { transform: scaleX(1); }
}

.hero-sub {
  position: relative;
  z-index: 1;
  margin-top: 28px;
  max-width: 42ch;
  color: var(--c-text-sub);
  font-size: var(--fs-body-lg);
  line-height: 2;
}

.hero-actions {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 36px;
}

/* Hero stats */
.hero-stats {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--c-line);
  padding-top: 36px;
  gap: 24px;
}
@media (max-width: 720px) { .hero-stats { grid-template-columns: repeat(2, 1fr); } }

.stat {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.stat-num {
  font-family: var(--f-en);
  font-weight: 200;
  font-size: clamp(40px, 5.4vw, 72px);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--c-text);
}
.stat-num .unit {
  font-size: 0.4em;
  margin-left: 4px;
  color: var(--c-text-sub);
}
.stat-num .plus {
  font-size: 0.5em;
  color: var(--c-accent);
  margin-left: 2px;
}
.stat-label {
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--c-text-sub);
}

/* ─────────────────────────── Section primitives ─────────────────────────── */
section { position: relative; }
.section { padding: var(--section-y) var(--pad-x); }
.section.alt { background: var(--c-sub-base); }

.section-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--c-accent);
  text-transform: uppercase;
  margin-bottom: 24px;
}
.section-eyebrow::before {
  content: "";
  display: block;
  width: 24px; height: 1px;
  background: currentColor;
}

.section-title {
  font-size: var(--fs-h2);
  font-weight: 300;
  letter-spacing: 0.02em;
  line-height: 1.3;
  margin: 0 0 24px;
  max-width: 22ch;
  text-wrap: balance;
}
.section-lede {
  font-size: var(--fs-body-lg);
  color: var(--c-text-sub);
  line-height: 2;
  max-width: 56ch;
  margin: 0;
}

/* ─────────────────────────── Brand message ─────────────────────────── */
.brand-message {
  text-align: center;
  padding: var(--section-y) var(--pad-x);
}
.brand-message .display {
  font-weight: 200;
  font-size: var(--fs-display);
  line-height: 1.05;
  letter-spacing: 0.02em;
  margin: 0;
  color: var(--c-text);
}
.brand-message .display em {
  font-style: normal;
  font-family: var(--f-en);
  font-weight: 100;
  color: var(--c-accent);
}
.brand-message p {
  margin: 40px auto 0;
  max-width: 56ch;
  color: var(--c-text-sub);
  line-height: 2.1;
  font-size: var(--fs-body-lg);
}

/* Infinity mark */
.infinity-svg {
  width: clamp(120px, 16vw, 220px);
  margin: 0 auto 40px;
  color: var(--c-accent);
}

/* ─────────────────────────── Three values ─────────────────────────── */
.values-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  margin-top: 64px;
  background: var(--c-line);
  border-top: 1px solid var(--c-line);
  border-bottom: 1px solid var(--c-line);
}
@media (max-width: 820px) { .values-grid { grid-template-columns: 1fr; } }

.value {
  background: var(--c-sub-base);
  padding: 56px 40px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.value-num {
  font-family: var(--f-en);
  font-weight: 200;
  font-size: 14px;
  letter-spacing: 0.18em;
  color: var(--c-accent);
}
.value-icon {
  width: 56px; height: 56px;
  color: var(--c-accent);
}
.value-title {
  font-size: var(--fs-h3);
  font-weight: 400;
  margin: 0;
  letter-spacing: 0.02em;
  line-height: 1.4;
}
.value-body {
  color: var(--c-text-sub);
  margin: 0;
  line-height: 2;
}

/* ─────────────────────────── Course cards ─────────────────────────── */
.courses {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  margin-top: 64px;
}

.course-card {
  display: grid;
  grid-template-columns: 280px 1fr auto;
  gap: 48px;
  align-items: center;
  padding: 40px;
  background: #fff;
  border: 1px solid var(--c-line);
  transition: border-color .3s var(--ease), transform .3s var(--ease);
}
.course-card:hover { border-color: var(--c-accent); }
@media (max-width: 980px) {
  .course-card { grid-template-columns: 1fr; gap: 24px; padding: 32px; }
}

.course-visual {
  position: relative;
  aspect-ratio: 4 / 3;
  background: var(--c-sub-base);
  overflow: hidden;
}
.course-visual .placeholder-tag {
  position: absolute;
  top: 12px; left: 12px;
  font-size: 10px;
  letter-spacing: 0.18em;
  color: var(--c-text-sub);
  text-transform: uppercase;
}

.course-meta {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--c-text-sub);
  text-transform: uppercase;
  margin-bottom: 16px;
}
.badge {
  display: inline-block;
  padding: 4px 10px;
  background: var(--c-accent);
  color: #fff;
  font-size: 10px;
  letter-spacing: 0.18em;
  border-radius: 2px;
}
.badge.outline { background: transparent; color: var(--c-accent); border: 1px solid var(--c-accent); }

.course-title {
  font-size: var(--fs-h3);
  font-weight: 300;
  letter-spacing: 0.02em;
  margin: 0 0 12px;
  line-height: 1.4;
}
.course-title .en {
  display: block;
  font-size: 0.5em;
  letter-spacing: 0.18em;
  color: var(--c-text-sub);
  margin-bottom: 6px;
}
.course-desc {
  color: var(--c-text-sub);
  margin: 0 0 20px;
  line-height: 1.9;
  max-width: 50ch;
}

.course-specs {
  display: flex;
  flex-wrap: wrap;
  gap: 20px 28px;
  font-size: 13px;
}
.course-spec {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.course-spec .lbl {
  font-size: 10px;
  letter-spacing: 0.18em;
  color: var(--c-text-sub);
  text-transform: uppercase;
}
.course-spec .val {
  font-family: var(--f-en);
  font-weight: 300;
  font-size: 16px;
  color: var(--c-text);
}
.course-spec .val .jp { font-family: var(--f-jp); }
.course-spec .val .strike {
  text-decoration: line-through;
  color: var(--c-text-sub);
  margin-right: 8px;
  font-size: 0.8em;
}
.course-spec .val .jp { font-family: var(--f-jp); font-size: 11px; color: var(--c-text-sub); margin-left: 4px; }
.course-spec .val .small { font-size: 11px; color: var(--c-text-sub); margin-left: 4px; }

.course-cta {
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: stretch;
  min-width: 180px;
}
@media (max-width: 980px) {
  .course-cta { flex-direction: row; min-width: 0; }
  .course-cta > * { flex: 1; justify-content: center; }
}

/* ─────────────────────────── How it works ─────────────────────────── */
.how-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  margin-top: 64px;
  background: var(--c-line);
}
@media (max-width: 980px) { .how-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .how-grid { grid-template-columns: 1fr; } }

.how-step {
  background: #fff;
  padding: 40px 32px 48px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  position: relative;
}
.how-step .step-num {
  font-family: var(--f-en);
  font-weight: 200;
  font-size: 56px;
  line-height: 1;
  color: var(--c-accent);
  letter-spacing: -0.04em;
}
.how-step h4 {
  font-size: var(--fs-h4);
  font-weight: 400;
  margin: 0;
  letter-spacing: 0.02em;
  line-height: 1.5;
}
.how-step p {
  color: var(--c-text-sub);
  margin: 0;
  line-height: 1.9;
  font-size: 14px;
}

/* ─────────────────────────── Subsidy ─────────────────────────── */
.subsidy {
  background: var(--c-sub-base);
  padding: var(--section-y) var(--pad-x);
}
.subsidy-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
  max-width: 1280px;
  margin: 0 auto;
}
@media (max-width: 900px) { .subsidy-card { grid-template-columns: 1fr; gap: 40px; } }

.subsidy-visual {
  aspect-ratio: 4/3;
  background: #fff;
  border: 1px solid var(--c-line);
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.price-illustration {
  width: 80%;
  text-align: center;
}
.price-illustration .from {
  font-family: var(--f-en);
  font-weight: 200;
  font-size: clamp(32px, 4vw, 48px);
  color: var(--c-text-sub);
  text-decoration: line-through;
  letter-spacing: -0.02em;
}
.price-illustration .arrow-down {
  display: block;
  margin: 12px auto;
  color: var(--c-accent);
}
.price-illustration .to {
  font-family: var(--f-en);
  font-weight: 200;
  font-size: clamp(56px, 8vw, 96px);
  color: var(--c-accent);
  letter-spacing: -0.04em;
  line-height: 1;
}
.price-illustration .to-jpy {
  font-size: 0.4em;
  margin-left: 4px;
  color: var(--c-text);
}
.price-illustration .caption {
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--c-text-sub);
  margin-top: 16px;
  text-transform: uppercase;
}

/* ─────────────────────────── Graduates ─────────────────────────── */
.graduates {
  padding: var(--section-y) var(--pad-x);
}
.grad-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 64px;
}
@media (max-width: 980px) { .grad-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .grad-grid { grid-template-columns: 1fr; } }

.grad-card {
  display: flex;
  flex-direction: column;
  gap: 16px;
  cursor: pointer;
}
.grad-photo {
  aspect-ratio: 4/5;
  background: var(--c-sub-base);
  position: relative;
  overflow: hidden;
}
.grad-photo .placeholder-tag {
  position: absolute;
  top: 10px; left: 10px;
  font-size: 10px;
  letter-spacing: 0.18em;
  color: var(--c-text-sub);
  text-transform: uppercase;
}
.grad-card:hover .grad-photo::after {
  opacity: 1;
}
.grad-photo::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 50%, rgba(0,188,212,0.08) 100%);
  opacity: 0;
  transition: opacity .3s var(--ease);
}
.grad-name {
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 0.04em;
  margin: 0;
}
.grad-name .en {
  display: block;
  font-weight: 300;
  color: var(--c-text-sub);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  margin-bottom: 4px;
}
.grad-transition {
  font-size: 12px;
  color: var(--c-text-sub);
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}
.grad-transition .arrow { color: var(--c-accent); }
.grad-quote {
  font-size: 13px;
  color: var(--c-text);
  line-height: 1.8;
  margin: 0;
  border-left: 1px solid var(--c-accent);
  padding-left: 12px;
}

/* ─────────────────────────── FAQ ─────────────────────────── */
.faq-list {
  margin-top: 56px;
  border-top: 1px solid var(--c-line);
  max-width: 920px;
  margin-left: auto;
  margin-right: auto;
}
.faq-item {
  border-bottom: 1px solid var(--c-line);
}
.faq-q {
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  padding: 28px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  font-size: var(--fs-body-lg);
  color: var(--c-text);
  letter-spacing: 0.02em;
  font-family: inherit;
  font-weight: 400;
}
.faq-q .q-mark {
  font-family: var(--f-en);
  color: var(--c-accent);
  font-weight: 300;
  margin-right: 16px;
  font-size: 14px;
  letter-spacing: 0.1em;
}
.faq-q .toggle {
  flex-shrink: 0;
  width: 28px; height: 28px;
  border-radius: 50%;
  border: 1px solid var(--c-line);
  display: grid;
  place-items: center;
  color: var(--c-accent);
  transition: transform .3s var(--ease), border-color .3s var(--ease), background .3s var(--ease);
}
.faq-item.open .toggle { transform: rotate(45deg); border-color: var(--c-accent); }
.faq-item.open .toggle { background: var(--c-accent); color: #fff; }
.faq-q-text { flex: 1; display: flex; align-items: center; }
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height .4s var(--ease);
}
.faq-a-inner {
  padding: 0 0 28px 50px;
  color: var(--c-text-sub);
  line-height: 2;
  max-width: 64ch;
}

/* ─────────────────────────── Final CTA ─────────────────────────── */
.final-cta {
  position: relative;
  padding: calc(var(--section-y) * 1.2) var(--pad-x);
  text-align: center;
  overflow: hidden;
}
.final-cta::before {
  content: "";
  position: absolute;
  inset: 10% 20%;
  background: radial-gradient(ellipse at center, rgba(0,188,212,0.10), transparent 70%);
  filter: blur(60px);
  pointer-events: none;
}
.final-cta h2 {
  position: relative;
  font-size: var(--fs-h1);
  font-weight: 200;
  margin: 0;
  letter-spacing: 0.02em;
  line-height: 1.2;
}
.final-cta h2 em {
  font-style: normal;
  font-family: var(--f-en);
  color: var(--c-accent);
  font-weight: 200;
}
.final-cta p {
  position: relative;
  margin: 32px auto 0;
  max-width: 50ch;
  color: var(--c-text-sub);
  line-height: 2;
}
.final-cta-actions {
  position: relative;
  margin-top: 48px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
}

/* ─────────────────────────── Footer ─────────────────────────── */
.site-footer {
  background: var(--c-sub-base);
  padding: 80px var(--pad-x) 32px;
  border-top: 1px solid var(--c-line);
}
.footer-top {
  display: grid;
  grid-template-columns: 2fr 3fr;
  gap: 60px;
  padding-bottom: 60px;
  border-bottom: 1px solid var(--c-line);
}
@media (max-width: 820px) { .footer-top { grid-template-columns: 1fr; } }

.footer-brand .brand-jp { display: block; margin-top: 8px; }
.footer-brand p {
  color: var(--c-text-sub);
  margin: 24px 0 0;
  line-height: 2;
  max-width: 40ch;
  font-size: 14px;
}

.footer-cols {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
@media (max-width: 560px) { .footer-cols { grid-template-columns: repeat(2, 1fr); } }

.footer-col h5 {
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--c-text-sub);
  text-transform: uppercase;
  margin: 0 0 18px;
  font-weight: 400;
}
.footer-col ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 10px; }
.footer-col a { font-size: 13px; color: var(--c-text); }
.footer-col a:hover { color: var(--c-accent); }

.footer-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 32px;
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--c-text-sub);
  text-transform: uppercase;
  flex-wrap: wrap;
  gap: 16px;
}

/* Locations strip */
.locations {
  display: flex;
  gap: 48px;
  margin-top: 28px;
  flex-wrap: wrap;
}
.location {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.location .name {
  font-size: 13px;
  letter-spacing: 0.04em;
}
.location .name .en {
  font-size: 10px;
  letter-spacing: 0.22em;
  color: var(--c-text-sub);
  display: block;
  text-transform: uppercase;
  margin-bottom: 2px;
}

/* Reveal on scroll */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity .8s var(--ease), transform .8s var(--ease);
}
.reveal.in {
  opacity: 1;
  transform: translateY(0);
}

/* ── Mobile menu open state (added for multi-page navigation) ───────────── */
@media (max-width: 900px) {
  .nav-main.open {
    display: flex;
    flex-direction: column; gap: 22px;
    position: fixed; top: 64px; left: 0; right: 0; bottom: 0;
    background: #fff; padding: 32px var(--pad-x); align-items: stretch;
    border-top: 1px solid var(--c-line);
  }
  .nav-main.open a { font-size: 16px; }
  .nav-main.open a.nav-cta { margin-left: 0; align-self: flex-start; }
  .menu-toggle.open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
  .menu-toggle.open span:nth-child(2) { transform: translateY(-6px) rotate(-45deg); }
}