/* ============================================================
   Step Sports Co., Ltd. - Corporate Site
   Aesthetic: 温かい・家族向け・テニスコートの緑×白
   ============================================================ */

:root {
  --green-900: oklch(0.32 0.08 150);
  --green-800: oklch(0.40 0.10 148);
  --green-700: oklch(0.45 0.12 145);   /* primary */
  --green-600: oklch(0.55 0.13 145);
  --green-500: oklch(0.65 0.14 145);
  --green-100: oklch(0.93 0.04 145);
  --green-50:  oklch(0.97 0.02 145);

  --line-white:  oklch(0.985 0.005 110);
  --paper:       oklch(0.97 0.012 95);
  --paper-warm:  oklch(0.94 0.018 80);

  --ink-900: oklch(0.22 0.02 150);
  --ink-700: oklch(0.36 0.02 150);
  --ink-500: oklch(0.52 0.015 150);
  --ink-400: oklch(0.66 0.012 150);
  --ink-300: oklch(0.82 0.008 150);

  --sun-500: oklch(0.72 0.14 55);   /* accent: 陽だまりオレンジ */
  --sun-200: oklch(0.92 0.05 70);

  --sky-500: oklch(0.72 0.08 230);  /* accent: 湘南の海 */
  --sky-100: oklch(0.94 0.02 230);

  --shadow-sm: 0 1px 2px rgba(20, 40, 30, 0.05);
  --shadow-md: 0 6px 24px -8px rgba(20, 40, 30, 0.18);
  --shadow-lg: 0 24px 60px -20px rgba(20, 40, 30, 0.22);

  --radius-sm: 4px;
  --radius-md: 10px;
  --radius-lg: 18px;

  --serif: "Noto Serif JP", "Hiragino Mincho ProN", "Yu Mincho", serif;
  --sans:  "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;
  --display: "Cormorant Garamond", "Noto Serif JP", serif;

  --maxw: 1200px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--sans);
  font-feature-settings: "palt";
  color: var(--ink-900);
  background: var(--paper);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  letter-spacing: 0.02em;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

.serif   { font-family: var(--serif); font-weight: 500; }
.display { font-family: var(--display); font-style: italic; font-weight: 500; }

/* ----------------- Header ----------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: saturate(1.4) blur(8px);
  border-bottom: 1px solid var(--ink-300);
  transition: background .3s ease, box-shadow .3s ease;
}
.site-header.scrolled { box-shadow: var(--shadow-sm); }

.nav-wrap {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 14px 28px;
  display: flex;
  align-items: center;
  gap: 32px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}
.brand-mark {
  width: 44px;
  height: 44px;
  border-radius: 8px;
  background: url('images/ss_logo.png') center/contain no-repeat white;
  box-shadow: var(--shadow-sm);
  position: relative;
  flex-shrink: 0;
}
.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}
.brand-en {
  font-family: var(--display);
  font-style: italic;
  font-size: 18px;
  color: var(--green-800);
  letter-spacing: 0.04em;
}
.brand-jp {
  font-family: var(--serif);
  font-size: 11px;
  color: var(--ink-500);
  letter-spacing: 0.18em;
  margin-top: 2px;
}

.nav {
  margin-left: auto;
  display: flex;
  gap: 26px;
  align-items: center;
}
.nav a {
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--ink-700);
  position: relative;
  padding: 4px 0;
  transition: color .2s ease;
}
.nav a .en {
  display: block;
  font-family: var(--display);
  font-style: italic;
  font-size: 10px;
  color: var(--green-700);
  letter-spacing: 0.08em;
  margin-bottom: 2px;
  text-transform: uppercase;
  opacity: 0.7;
}
.nav a:hover { color: var(--green-700); }
.nav a:hover .en { opacity: 1; }
.nav a.active { color: var(--green-800); }
.nav a.active::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: -6px;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--green-700);
  transform: translateX(-50%);
}

.nav a.nav-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 8px 32px;
  background: var(--green-700);
  color: white !important;
  border-radius: 999px;
  font-size: 13px;
  letter-spacing: 0.08em;
  white-space: nowrap;
  transition: background .2s ease, transform .2s ease;
}
.nav a.nav-cta:hover { background: var(--green-800); transform: translateY(-1px); }
.nav a.nav-cta .en { color: rgba(255,255,255,0.8) !important; }
.nav a.nav-cta.active::after { display: none; }

.menu-toggle {
  display: none;
  background: none;
  border: 0;
  cursor: pointer;
  padding: 8px;
  margin-left: auto;
}
.menu-toggle span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--ink-700);
  margin: 5px 0;
  transition: transform .25s, opacity .25s;
}

@media (max-width: 920px) {
  .nav { display: none; }
  .menu-toggle { display: block; }
  .nav.open {
    display: flex;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    background: white;
    padding: 24px;
    gap: 18px;
    border-bottom: 1px solid var(--ink-300);
  }
}

/* ----------------- Buttons ----------------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 14px 28px;
  border-radius: 999px;
  font-size: 13px;
  letter-spacing: 0.14em;
  cursor: pointer;
  border: 0;
  transition: transform .2s ease, background .2s ease, color .2s ease, box-shadow .2s ease;
  font-family: var(--sans);
}
.btn-primary {
  background: var(--green-700);
  color: white;
}
.btn-primary:hover {
  background: var(--green-800);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}
.btn-ghost {
  background: transparent;
  color: var(--green-800);
  border: 1px solid var(--green-700);
}
.btn-ghost:hover { background: var(--green-700); color: white; }
.btn .arrow {
  width: 18px; height: 1px;
  background: currentColor;
  position: relative;
  transition: width .25s ease;
}
.btn .arrow::after {
  content: "";
  position: absolute;
  right: 0; top: -3px;
  width: 7px; height: 7px;
  border-top: 1px solid currentColor;
  border-right: 1px solid currentColor;
  transform: rotate(45deg);
}
.btn:hover .arrow { width: 26px; }

/* ----------------- Section primitives ----------------- */
.section {
  padding: 110px 28px;
}
.section-narrow {
  max-width: var(--maxw);
  margin: 0 auto;
}
.section-head {
  display: flex;
  align-items: baseline;
  gap: 24px;
  margin-bottom: 56px;
  flex-wrap: wrap;
}
.kicker {
  font-family: var(--display);
  font-style: italic;
  color: var(--green-700);
  font-size: 14px;
  letter-spacing: 0.12em;
}
.kicker::before {
  content: "—  ";
  color: var(--green-500);
}
.section-title {
  font-family: var(--serif);
  font-size: clamp(28px, 3.4vw, 42px);
  font-weight: 600;
  margin: 0;
  letter-spacing: 0.04em;
  line-height: 1.4;
  color: var(--ink-900);
}
.section-title em {
  font-style: normal;
  color: var(--green-700);
}
.section-lede {
  margin-top: 18px;
  max-width: 640px;
  color: var(--ink-700);
  font-size: 15px;
  line-height: 2;
}

/* ----------------- Reveal animation ----------------- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .9s cubic-bezier(.2,.7,.2,1), transform .9s cubic-bezier(.2,.7,.2,1);
}
.reveal.in { opacity: 1; transform: none; }
.reveal[data-delay="1"] { transition-delay: .08s; }
.reveal[data-delay="2"] { transition-delay: .16s; }
.reveal[data-delay="3"] { transition-delay: .24s; }
.reveal[data-delay="4"] { transition-delay: .32s; }

/* ----------------- Footer ----------------- */
.site-footer {
  background: var(--green-900);
  color: oklch(0.92 0.02 145);
  padding: 80px 28px 32px;
  margin-top: 80px;
}
.footer-grid {
  max-width: var(--maxw);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr 1fr;
  gap: 48px;
}
.footer-brand .brand-en { color: oklch(0.92 0.06 110); }
.footer-brand .brand-jp { color: oklch(0.78 0.02 145); }
.footer-brand p {
  font-size: 13px;
  line-height: 2;
  color: oklch(0.82 0.02 145);
  margin: 22px 0 0;
}
.footer-col h4 {
  font-family: var(--display);
  font-style: italic;
  font-size: 14px;
  letter-spacing: 0.1em;
  color: oklch(0.85 0.08 110);
  margin: 0 0 18px;
  font-weight: 500;
}
.footer-col ul { list-style: none; padding: 0; margin: 0; }
.footer-col li { margin-bottom: 10px; }
.footer-col a {
  font-size: 13px;
  color: oklch(0.85 0.02 145);
  transition: color .2s;
  letter-spacing: 0.06em;
}
.footer-col a:hover { color: oklch(0.95 0.05 110); }
.footer-bottom {
  max-width: var(--maxw);
  margin: 56px auto 0;
  padding-top: 24px;
  border-top: 1px solid oklch(0.4 0.04 145);
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  letter-spacing: 0.12em;
  color: oklch(0.7 0.02 145);
}
@media (max-width: 820px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 520px) {
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; gap: 8px; }
}

/* ----------------- Page header (sub pages) ----------------- */
.page-hero {
  position: relative;
  padding: 120px 28px 80px;
  background:
    linear-gradient(180deg, var(--green-50) 0%, var(--paper) 100%);
  overflow: hidden;
}
.page-hero::before {
  content: "";
  position: absolute;
  right: -100px;
  top: -100px;
  width: 360px;
  height: 360px;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 35%, oklch(0.92 0.10 110), oklch(0.78 0.18 115));
  opacity: 0.18;
  filter: blur(20px);
}
.page-hero-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  position: relative;
}
.crumbs {
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--ink-500);
  margin-bottom: 24px;
}
.crumbs a:hover { color: var(--green-700); }
.crumbs span { margin: 0 10px; color: var(--ink-300); }
.page-title-en {
  font-family: var(--display);
  font-style: italic;
  font-size: clamp(48px, 7vw, 96px);
  color: var(--green-700);
  line-height: 1;
  letter-spacing: 0.02em;
  margin: 0;
}
.page-title-jp {
  font-family: var(--serif);
  font-size: 18px;
  letter-spacing: 0.3em;
  color: var(--ink-700);
  margin: 16px 0 0;
}

/* ----------------- Card / list primitives ----------------- */
.placeholder-img {
  background:
    repeating-linear-gradient(
      45deg,
      oklch(0.92 0.02 145),
      oklch(0.92 0.02 145) 12px,
      oklch(0.95 0.015 145) 12px,
      oklch(0.95 0.015 145) 24px
    );
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--ink-500);
  font-family: ui-monospace, "SF Mono", monospace;
  font-size: 11px;
  letter-spacing: 0.1em;
  border-radius: var(--radius-md);
  text-align: center;
  padding: 8px;
}
.placeholder-img.has-photo { background: none; padding: 0; }
.placeholder-img.has-photo > span { display: none; }
.img-fill {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  border-radius: inherit;
}

/* ----------------- News list ----------------- */
.news-item {
  display: grid;
  grid-template-columns: 120px 110px 1fr auto;
  gap: 24px;
  padding: 22px 0;
  border-bottom: 1px solid var(--ink-300);
  align-items: center;
  transition: background .2s ease, padding .2s ease;
}
.news-item:hover {
  background: var(--green-50);
  padding-left: 12px;
  padding-right: 12px;
}
.news-date {
  font-family: var(--display);
  font-style: italic;
  color: var(--green-700);
  font-size: 16px;
  letter-spacing: 0.04em;
}
.news-tag {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 999px;
  font-size: 10px;
  letter-spacing: 0.18em;
  text-align: center;
  border: 1px solid var(--ink-300);
  color: var(--ink-700);
  background: white;
  width: fit-content;
}
.news-tag.event   { border-color: var(--sun-500); color: var(--sun-500); }
.news-tag.school  { border-color: var(--green-700); color: var(--green-700); }
.news-tag.notice  { border-color: var(--ink-500); color: var(--ink-700); }
.news-title {
  font-size: 15px;
  color: var(--ink-900);
  letter-spacing: 0.04em;
}
.news-arrow {
  color: var(--green-700);
  opacity: 0.5;
  transition: opacity .2s ease, transform .2s ease;
}
.news-item:hover .news-arrow { opacity: 1; transform: translateX(4px); }

@media (max-width: 700px) {
  .news-item {
    grid-template-columns: 90px 1fr;
    grid-template-rows: auto auto;
    gap: 8px 16px;
  }
  .news-tag { grid-row: 1; grid-column: 2; justify-self: start; }
  .news-date { grid-row: 1; grid-column: 1; }
  .news-title { grid-column: 1 / -1; }
  .news-arrow { display: none; }
}

/* ----------------- Floating tweaks button safe-area ----------------- */
body { padding-bottom: 0; }