/* ============================================================
   Empowerthy — style.css
   Brand palette (from logo): charcoal base + red / purple / blue
   ============================================================ */

:root {
  --c-bg: #ffffff;
  --c-ink: #1c1d22;
  --c-ink-soft: #4a4f5c;
  --c-dark: #2b2b2f;      /* logo charcoal */
  --c-dark-2: #34343a;
  --c-line: #e7e8ec;
  --c-line-dark: #3c3d46;
  --c-gray: #8a8f9c;

  /* brand colors */
  --c-red: #c9385c;
  --c-blue: #3b9bdc;
  --c-purple: #6a5cc0;
  --c-accent: #3b9bdc;    /* primary  = blue  */
  --c-accent-2: #74c0ec;  /* light accent for text on dark */
  --grad-brand: linear-gradient(120deg, #c9385c 0%, #6a5cc0 52%, #3b9bdc 100%);

  --maxw: 1120px;
  --pad: clamp(20px, 5vw, 40px);
  --radius: 16px;

  --ff-en: "Montserrat", "Noto Sans JP", sans-serif;
  --ff-ja: "Noto Sans JP", sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--ff-ja);
  color: var(--c-ink);
  background: var(--c-bg);
  line-height: 1.85;
  font-size: 16px;
  letter-spacing: .02em;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

img, svg { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: color .25s, opacity .25s; }
ul { list-style: none; }

.container { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: var(--pad); }

.sp-only { display: none; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .5em;
  font-family: var(--ff-en);
  font-weight: 700;
  font-size: .95rem;
  letter-spacing: .04em;
  padding: 1em 2.2em;
  border-radius: 999px;
  border: 1.5px solid transparent;
  cursor: pointer;
  transition: transform .25s, box-shadow .25s, filter .25s, background .25s, color .25s, border-color .25s;
  white-space: nowrap;
}
.btn--primary {
  background: var(--grad-brand);
  color: #fff;
  box-shadow: 0 10px 26px -10px rgba(59, 155, 220, .65);
}
.btn--primary:hover { transform: translateY(-3px); box-shadow: 0 16px 34px -10px rgba(106, 92, 192, .7); filter: brightness(1.08); }
.btn--ghost { background: transparent; color: var(--c-ink); border-color: var(--c-ink); }
.btn--ghost:hover { background: var(--c-ink); color: #fff; transform: translateY(-3px); }
.btn--block { width: 100%; padding-block: 1.1em; }

/* ---------- Header ---------- */
.header {
  position: fixed; inset: 0 0 auto 0; z-index: 100;
  transition: background .3s, box-shadow .3s, backdrop-filter .3s;
}
.header.is-scrolled {
  background: rgba(255,255,255,.9);
  backdrop-filter: saturate(180%) blur(12px);
  box-shadow: 0 1px 0 var(--c-line);
}
.header__inner {
  max-width: var(--maxw); margin-inline: auto;
  padding: 16px var(--pad);
  display: flex; align-items: center; justify-content: space-between;
}
.logo { display: inline-flex; align-items: center; gap: 9px; }
.logo__mark { height: 34px; width: auto; flex: none; }
.logo__text {
  font-family: var(--ff-en); font-weight: 800; font-size: 1.35rem; letter-spacing: .01em;
}
.header:not(.is-scrolled):not(.is-open) .logo__text { color: #fff; }
.header:not(.is-scrolled):not(.is-open) .gnav__en { color: #fff; }
.header:not(.is-scrolled):not(.is-open) .gnav__ja { color: rgba(255,255,255,.6); }
.header:not(.is-scrolled):not(.is-open) .hamburger span { background: #fff; }

.gnav__list { display: flex; align-items: center; gap: clamp(14px, 2vw, 30px); }
.gnav__link { display: inline-flex; flex-direction: column; align-items: center; line-height: 1.2; }
.gnav__en { font-family: var(--ff-en); font-weight: 600; font-size: .92rem; }
.gnav__ja { font-size: .62rem; color: var(--c-gray); margin-top: 2px; }
.gnav__link:hover .gnav__en { color: var(--c-accent); }
.gnav__link--cta {
  background: var(--c-accent); color: #fff !important; border-radius: 999px;
  padding: .55em 1.4em;
}
.gnav__link--cta .gnav__en,
.gnav__link--cta .gnav__ja { color: #fff !important; }
.gnav__link--cta:hover { background: var(--c-purple); }

.hamburger {
  display: none; width: 40px; height: 40px; background: none; border: none; cursor: pointer;
  position: relative; z-index: 110;
}
.hamburger span {
  display: block; width: 26px; height: 2px; background: var(--c-ink); margin: 6px auto;
  transition: transform .3s, opacity .3s, background .3s;
}

/* ---------- Hero ---------- */
.hero {
  position: relative; min-height: 100svh;
  display: flex; align-items: center;
  color: #fff; overflow: hidden;
  background: var(--c-dark);
}
.hero__bg {
  position: absolute; inset: 0;
  background:
    radial-gradient(52% 50% at 82% 16%, rgba(59,155,220,.34), transparent 62%),
    radial-gradient(46% 46% at 60% 30%, rgba(106,92,192,.30), transparent 62%),
    radial-gradient(50% 50% at 10% 86%, rgba(201,56,92,.26), transparent 62%),
    linear-gradient(160deg, #2b2b2f 0%, #34343a 100%);
}
.hero__bg::after {
  content: ""; position: absolute; inset: 0;
  background-image: linear-gradient(rgba(255,255,255,.045) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(255,255,255,.045) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(80% 80% at 50% 40%, #000, transparent 90%);
}
.hero__inner {
  position: relative; z-index: 2;
  max-width: var(--maxw); margin-inline: auto; width: 100%;
  padding-inline: var(--pad);
  padding-top: 80px;
}
.hero__sub {
  font-family: var(--ff-en); font-weight: 600; letter-spacing: .18em;
  font-size: clamp(.85rem, 2vw, 1.05rem); color: var(--c-accent-2);
  margin-bottom: .8em;
}
.hero__sub span { opacity: .7; margin-inline: .2em; }
.hero__title {
  font-weight: 900; line-height: 1.12;
  font-size: clamp(2.7rem, 9vw, 6rem); letter-spacing: .02em;
  margin-bottom: .5em;
}
.hero__title span { display: inline-block; }
.hero__lead {
  font-size: clamp(.95rem, 2.4vw, 1.15rem); line-height: 2;
  color: rgba(255,255,255,.82); max-width: 40em;
  margin-bottom: 2.4em;
}
.hero__actions { display: flex; flex-wrap: wrap; gap: 16px; }
.hero__actions .btn--ghost { color: #fff; border-color: rgba(255,255,255,.5); }
.hero__actions .btn--ghost:hover { background: #fff; color: var(--c-dark); border-color: #fff; }

.hero__scroll {
  position: absolute; left: 50%; bottom: 26px; transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 10px;
  font-family: var(--ff-en); font-size: .68rem; letter-spacing: .2em; color: rgba(255,255,255,.65);
  z-index: 2;
}
.hero__scroll-line { width: 1px; height: 46px; background: rgba(255,255,255,.4); position: relative; overflow: hidden; }
.hero__scroll-line::after {
  content: ""; position: absolute; inset: 0; background: var(--c-accent-2);
  animation: scrollLine 1.8s ease-in-out infinite;
}
@keyframes scrollLine {
  0% { transform: translateY(-100%); }
  50% { transform: translateY(0); }
  100% { transform: translateY(100%); }
}

/* ---------- Section base ---------- */
.section { padding: clamp(72px, 12vw, 130px) 0; }
.section--dark { background: var(--c-dark); color: #fff; }
.section__head { margin-bottom: clamp(38px, 6vw, 64px); }
.section__label {
  display: inline-block; font-family: var(--ff-en); font-weight: 700;
  font-size: .82rem; letter-spacing: .18em; color: var(--c-accent);
  margin-bottom: .8em; position: relative; padding-left: 34px;
}
.section__label::before {
  content: ""; position: absolute; left: 0; top: 50%; width: 26px; height: 2px;
  background: var(--grad-brand); transform: translateY(-50%);
}
.section__label--center { padding-left: 0; }
.section__label--center::before { display: none; }
.section__title {
  font-weight: 900; line-height: 1.35;
  font-size: clamp(1.7rem, 4.6vw, 2.7rem); letter-spacing: .01em;
}
.section__desc { margin-top: 1em; color: var(--c-ink-soft); font-size: 1.02rem; }
.section--dark .section__desc { color: rgba(255,255,255,.7); }

/* ---------- Message ---------- */
.message__body { max-width: 44em; font-size: clamp(1rem, 2.4vw, 1.12rem); }
.message__body p { margin-bottom: 1.6em; }
.message__body b { color: var(--c-accent); font-weight: 700; }

/* ---------- Service ---------- */
.service__list {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
}
.service-card {
  position: relative; background: var(--c-dark-2);
  border: 1px solid var(--c-line-dark); border-radius: var(--radius);
  padding: 40px 30px 34px; overflow: hidden;
  transition: transform .35s, border-color .35s, box-shadow .35s;
}
.service-card::before {
  content: ""; position: absolute; inset: 0 0 auto 0; height: 3px;
  background: var(--grad-brand);
  transform: scaleX(0); transform-origin: left; transition: transform .4s;
}
.service-card:hover { transform: translateY(-8px); border-color: rgba(59,155,220,.55); box-shadow: 0 24px 50px -24px rgba(0,0,0,.7); }
.service-card:hover::before { transform: scaleX(1); }
.service-card__no {
  font-family: var(--ff-en); font-weight: 800; font-size: 2.6rem;
  color: rgba(255,255,255,.09); position: absolute; top: 20px; right: 26px; line-height: 1;
}
.service-card__icon {
  width: 56px; height: 56px; border-radius: 14px;
  display: grid; place-items: center; margin-bottom: 22px;
}
.service-card__icon svg { width: 28px; height: 28px; }
/* per-card brand color, echoing the logo */
.service-card:nth-child(1) .service-card__icon { background: rgba(201,56,92,.16);  color: #e06a86; }
.service-card:nth-child(2) .service-card__icon { background: rgba(106,92,192,.18); color: #9d8fe6; }
.service-card:nth-child(3) .service-card__icon { background: rgba(59,155,220,.16); color: #74c0ec; }
.service-card__title { font-size: 1.25rem; font-weight: 700; line-height: 1.45; margin-bottom: .7em; }
.service-card__text { color: rgba(255,255,255,.72); font-size: .95rem; line-height: 1.9; }
.service-card__tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 20px; }
.service-card__tags li {
  font-size: .74rem; letter-spacing: .02em; color: rgba(255,255,255,.66);
  border: 1px solid rgba(255,255,255,.22); border-radius: 999px; padding: .3em 1em;
}

/* ---------- About / Features ---------- */
.feature__list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.feature {
  position: relative; border: 1px solid var(--c-line); border-radius: var(--radius);
  padding: 34px 32px; background: #fff;
  transition: transform .3s, box-shadow .3s, border-color .3s;
}
.feature:hover { transform: translateY(-6px); box-shadow: 0 22px 44px -26px rgba(28,29,34,.35); border-color: rgba(59,155,220,.4); }
.feature__no {
  font-family: var(--ff-en); font-weight: 800; font-size: 1rem;
  display: inline-block; margin-bottom: .6em; letter-spacing: .08em;
}
.feature:nth-child(1) .feature__no { color: var(--c-red); }
.feature:nth-child(2) .feature__no { color: var(--c-purple); }
.feature:nth-child(3) .feature__no { color: var(--c-blue); }
.feature:nth-child(4) .feature__no { color: var(--c-red); }
.feature__title { font-size: 1.18rem; font-weight: 700; margin-bottom: .6em; }
.feature__text { color: var(--c-ink-soft); font-size: .95rem; }

/* ---------- Company ---------- */
.company__table { border-top: 1px solid var(--c-line-dark); max-width: 780px; }
.company__row {
  display: grid; grid-template-columns: 200px 1fr;
  border-bottom: 1px solid var(--c-line-dark); padding: 22px 6px;
}
.company__row dt { font-weight: 700; color: rgba(255,255,255,.9); font-size: .95rem; }
.company__row dd { color: rgba(255,255,255,.72); font-size: .98rem; }
.company__row dd a { color: var(--c-accent-2); text-decoration: underline; text-underline-offset: 3px; }
.company__row dd a:hover { color: #fff; }

/* ---------- Contact ---------- */
.contact { background: linear-gradient(180deg, #f7f8fa, #fff); }
.contact__inner { max-width: 720px; margin-inline: auto; text-align: center; }
.contact__title { font-size: clamp(1.7rem, 5vw, 2.6rem); font-weight: 900; line-height: 1.35; margin: .3em 0 .5em; }
.contact__lead { color: var(--c-ink-soft); margin-bottom: 2.6em; }

.contact-form { text-align: left; display: grid; gap: 18px; }
.contact-form__row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.contact-form label { display: block; font-weight: 700; font-size: .9rem; }
.contact-form label span {
  font-size: .68rem; color: #fff; background: var(--c-red); border-radius: 4px;
  padding: .1em .6em; margin-left: .6em; vertical-align: middle; font-weight: 700;
}
.contact-form input,
.contact-form textarea {
  width: 100%; margin-top: .6em; font-family: inherit; font-size: 1rem;
  padding: .9em 1em; border: 1.5px solid var(--c-line); border-radius: 12px;
  background: #fff; color: var(--c-ink); transition: border-color .25s, box-shadow .25s;
}
.contact-form input:focus,
.contact-form textarea:focus {
  outline: none; border-color: var(--c-accent); box-shadow: 0 0 0 4px rgba(59,155,220,.15);
}
.contact-form textarea { resize: vertical; }
.contact-form .btn { margin-top: 6px; }
.contact-form__note { font-size: .8rem; color: var(--c-gray); text-align: center; line-height: 1.8; }
.contact-form__note a { color: var(--c-accent); text-decoration: underline; text-underline-offset: 2px; }

/* ---------- Footer ---------- */
.footer { background: var(--c-dark); color: rgba(255,255,255,.7); padding: 60px 0 30px; }
.footer__inner { display: flex; justify-content: space-between; align-items: flex-start; gap: 30px; flex-wrap: wrap; }
.footer__logo { display: inline-flex; align-items: center; gap: 10px; }
.footer__logo .logo__mark { height: 34px; width: auto; }
.footer__brand .logo__text { color: #fff; font-size: 1.5rem; }
.footer__brand p { font-size: .85rem; margin-top: .5em; color: rgba(255,255,255,.55); }
.footer__nav { display: flex; flex-wrap: wrap; gap: 12px 26px; font-size: .9rem; }
.footer__nav a:hover { color: var(--c-accent-2); }
.footer__copy {
  text-align: center; font-family: var(--ff-en); font-size: .74rem; letter-spacing: .04em;
  color: rgba(255,255,255,.4); margin-top: 46px; padding-top: 26px;
  border-top: 1px solid var(--c-line-dark);
}

/* ---------- Reveal animation ---------- */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .8s ease, transform .8s ease; transition-delay: var(--d, 0s); }
.reveal.is-visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .hero__scroll-line::after { animation: none; }
  html { scroll-behavior: auto; }
}

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 900px) {
  .service__list { grid-template-columns: 1fr; max-width: 460px; margin-inline: auto; }
}

@media (max-width: 768px) {
  .sp-only { display: inline; }

  .hamburger { display: block; }

  .gnav {
    position: fixed; inset: 0; background: var(--c-dark);
    display: flex; align-items: center; justify-content: center;
    opacity: 0; visibility: hidden; transition: opacity .35s;
  }
  .header.is-open .gnav { opacity: 1; visibility: visible; }
  .gnav__list { flex-direction: column; gap: 26px; }
  .gnav__en { font-size: 1.4rem; color: #fff; }
  .gnav__ja { font-size: .7rem; color: rgba(255,255,255,.5); }
  .gnav__link--cta { padding: .7em 2em; margin-top: 10px; }

  .header.is-open .hamburger span { background: #fff; }
  .header.is-open .hamburger span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
  .header.is-open .hamburger span:nth-child(2) { opacity: 0; }
  .header.is-open .hamburger span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

  .feature__list { grid-template-columns: 1fr; }
  .contact-form__row { grid-template-columns: 1fr; }
  .company__row { grid-template-columns: 1fr; gap: 6px; padding: 18px 4px; }
  .footer__inner { flex-direction: column; }
}