/* ==========================================================================
   CURICITY — style.css
   ========================================================================== */

:root {
  --color-white: #ffffff;
  --color-black: #131313;
  --color-dark: #1a1a1a;
  --color-dark-gray: #2b2b2b;
  --color-gray: #6e6e6e;
  --color-light-gray: #ececec;
  --color-border: #e0e0e0;

  --font-en: 'Futura', 'Jost', 'Avenir Next', sans-serif;
  --font-jp: 'Zen Kaku Gothic New', sans-serif;

  --header-height: 84px;
  --header-height-sp: 64px;

  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --section-padding: 160px 0;
  --section-padding-sp: 96px 0;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-jp);
  color: var(--color-dark);
  background: var(--color-white);
  line-height: 1.8;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

ul {
  list-style: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

input,
textarea {
  font-family: inherit;
  font-size: 1rem;
}

.section-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 40px;
}

/* ---------- Reveal animation ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.9s var(--ease), transform 0.9s var(--ease);
}

[data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- Buttons ---------- */
.btn-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 18px 40px;
  font-family: var(--font-en);
  font-size: 0.85rem;
  letter-spacing: 0.12em;
  border-radius: 999px;
  transition: all 0.4s var(--ease);
}

.btn-outline {
  border: 1px solid var(--color-dark);
  color: var(--color-dark);
}

.btn-outline:hover {
  background: var(--color-dark);
  color: var(--color-white);
}

/* ==========================================================================
   HEADER
   ========================================================================== */

.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  z-index: 1000;
  transition: background 0.4s var(--ease), height 0.4s var(--ease);
}

.header.is-scrolled {
  background: rgba(19, 19, 19, 0.85);
  backdrop-filter: blur(10px);
}

.header__inner {
  max-width: 1400px;
  margin: 0 auto;
  height: 100%;
  padding: 0 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.header__logo {
  font-family: var(--font-en);
  font-size: 1.35rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--color-white);
}

.header__nav-list {
  display: flex;
  align-items: center;
  gap: 48px;
}

.nav-link {
  font-family: var(--font-en);
  font-size: 0.9rem;
  letter-spacing: 0.06em;
  color: var(--color-white);
  position: relative;
  padding-bottom: 4px;
}

.nav-link::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 1px;
  background: currentColor;
  transition: width 0.4s var(--ease);
}

.nav-link:hover::after {
  width: 100%;
}

.nav-link--cta {
  border: 1px solid rgba(255, 255, 255, 0.5);
  padding: 10px 24px;
  border-radius: 999px;
}

.nav-link--cta::after {
  display: none;
}

.nav-link--cta:hover {
  background: var(--color-white);
  color: var(--color-dark);
}

/* ---------- Hamburger toggle ---------- */
.header__toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: flex-end;
  gap: 6px;
  width: 32px;
  height: 24px;
  z-index: 1001;
}

.header__toggle span {
  display: block;
  height: 1px;
  width: 100%;
  background: var(--color-white);
  transition: transform 0.4s var(--ease), opacity 0.3s var(--ease), width 0.4s var(--ease);
}

.header__toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
  width: 100%;
}

.header__toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.header__toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
  width: 100%;
}

/* ==========================================================================
   HERO
   ========================================================================== */

.hero {
  position: relative;
  height: 100vh;
  min-height: 560px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  overflow: hidden;
  background: var(--color-black);
}

.hero__media {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero__video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(19, 19, 19, 0.55) 0%, rgba(19, 19, 19, 0.35) 40%, rgba(19, 19, 19, 0.75) 100%);
}

.hero__content {
  position: relative;
  z-index: 1;
  text-align: center;
  color: var(--color-white);
  padding: 0 24px;
}

.hero__title {
  font-family: var(--font-en);
  font-weight: 400;
  line-height: 1.25;
  font-size: clamp(1.9rem, 5.2vw, 4.2rem);
  letter-spacing: -0.01em;
}

.hero__title-line {
  display: block;
}

.hero__title-line--accent {
  color: var(--color-light-gray);
}

.hero__lead {
  margin-top: 28px;
  font-size: 1.05rem;
  letter-spacing: 0.04em;
  opacity: 0.9;
}

.hero__scroll {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  color: var(--color-white);
}

.hero__scroll span {
  font-family: var(--font-en);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  opacity: 0.8;
}

.hero__scroll-line {
  width: 1px;
  height: 48px;
  background: rgba(255, 255, 255, 0.4);
  overflow: hidden;
  position: relative;
}

.hero__scroll-line::after {
  content: '';
  position: absolute;
  top: -100%;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--color-white);
  animation: scrollLine 1.8s infinite ease-in-out;
}

@keyframes scrollLine {
  0% { top: -100%; }
  60% { top: 100%; }
  100% { top: 100%; }
}

/* ==========================================================================
   SECTION COMMON
   ========================================================================== */

.section-label {
  font-family: var(--font-en);
  font-size: 0.85rem;
  letter-spacing: 0.28em;
  color: var(--color-gray);
  margin-bottom: 20px;
}

.section-label--light {
  color: rgba(255, 255, 255, 0.6);
}

.section-title {
  font-family: var(--font-jp);
  font-size: clamp(1.7rem, 3.4vw, 2.6rem);
  font-weight: 500;
  line-height: 1.5;
  letter-spacing: 0.02em;
  margin-bottom: 48px;
}

/* ==========================================================================
   ABOUT
   ========================================================================== */

.about {
  padding: var(--section-padding);
}

.about__text {
  max-width: 640px;
  color: var(--color-gray);
  font-size: 1rem;
}

.about__text p + p {
  margin-top: 1.6em;
}

/* ==========================================================================
   MARQUEE
   ========================================================================== */

.marquee {
  background: var(--color-black);
  overflow: hidden;
  padding: 16px 0;
}

.marquee__track {
  display: flex;
  width: max-content;
  animation: marquee-scroll 22s linear infinite;
}

.marquee__group {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.marquee__group span {
  font-family: var(--font-en);
  font-size: clamp(1.6rem, 4.5vw, 3.2rem);
  color: var(--color-white);
  white-space: nowrap;
  padding: 0 28px;
}

@keyframes marquee-scroll {
  from {
    transform: translateX(0);
  }
  to {
    transform: translateX(-50%);
  }
}

/* ==========================================================================
   WORKS
   ========================================================================== */

.works {
  padding: var(--section-padding);
  background: var(--color-light-gray);
}

.works--page {
  padding-top: calc(var(--header-height) + 80px);
}

.works__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 40px;
}

.work-card__link {
  display: block;
}

.work-card__image {
  aspect-ratio: 4 / 3;
  background: linear-gradient(135deg, var(--color-dark-gray) 0%, var(--color-black) 100%);
  border-radius: 4px;
  overflow: hidden;
  transition: transform 0.6s var(--ease);
}

.work-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.work-card:hover .work-card__image {
  transform: scale(1.02);
}

.work-card__body {
  margin-top: 24px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.work-card__category {
  font-family: var(--font-en);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  color: var(--color-gray);
}

.work-card__title {
  font-size: 1.2rem;
  font-weight: 500;
}

.works__more {
  margin-top: 64px;
  display: flex;
  width: fit-content;
  margin-left: auto;
  margin-right: auto;
}

/* ==========================================================================
   SERVICES
   ========================================================================== */

.services {
  padding: var(--section-padding);
}

.services__list {
  border-top: 1px solid var(--color-border);
}

.service-item {
  display: flex;
  align-items: baseline;
  gap: 40px;
  padding: 52px 0;
  border-bottom: 1px solid var(--color-border);
  transition: padding 0.4s var(--ease);
}

.service-item__num {
  font-family: var(--font-en);
  font-size: clamp(1.6rem, 2.6vw, 2.1rem);
  font-weight: 500;
  color: var(--color-border);
  flex-shrink: 0;
  width: 64px;
}

.service-item__title {
  font-size: 1.6rem;
  font-weight: 500;
  margin-bottom: 18px;
  color: var(--color-dark);
}

.service-item__text {
  color: var(--color-gray);
  max-width: 560px;
  font-size: 1rem;
  line-height: 1.9;
}

/* ==========================================================================
   CONTACT
   ========================================================================== */

.contact {
  padding: 120px 0;
  background: var(--color-black);
  color: var(--color-white);
}

.contact__title {
  font-family: var(--font-jp);
  font-size: clamp(1.9rem, 4vw, 3rem);
  font-weight: 500;
  line-height: 1.4;
  margin-bottom: 24px;
}

.contact__lead {
  color: rgba(255, 255, 255, 0.65);
  margin-bottom: 56px;
}

.contact__email {
  display: inline-block;
  font-family: var(--font-en);
  font-size: clamp(1.3rem, 3vw, 1.8rem);
  letter-spacing: 0.02em;
  color: var(--color-white);
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.4);
  transition: opacity 0.3s var(--ease), border-color 0.3s var(--ease);
}

.contact__email:hover {
  opacity: 0.7;
  border-color: var(--color-white);
}

/* ==========================================================================
   COMPANY
   ========================================================================== */

.company {
  padding: 80px 0;
}

.company__list {
  border-top: 1px solid var(--color-border);
}

.company__row {
  display: flex;
  align-items: baseline;
  gap: 32px;
  padding: 20px 0;
  border-bottom: 1px solid var(--color-border);
}

.company__row dt {
  width: 100px;
  flex-shrink: 0;
  color: var(--color-gray);
  font-size: 0.85rem;
}

.company__row dd {
  color: var(--color-dark);
  font-size: 0.95rem;
}

/* ==========================================================================
   LEGAL PAGES (Privacy Policy / Terms of Use)
   ========================================================================== */

.legal {
  padding: var(--section-padding);
}

.legal--page {
  padding-top: calc(var(--header-height) + 80px);
}

.legal__updated {
  color: var(--color-gray);
  font-size: 0.85rem;
  margin-bottom: 56px;
}

.legal__content {
  max-width: 100%;
}

.legal__content h2 {
  font-size: 1.2rem;
  font-weight: 500;
  margin-top: 56px;
  margin-bottom: 16px;
}

.legal__content h2:first-child {
  margin-top: 0;
}

.legal__content p {
  color: var(--color-gray);
  line-height: 1.9;
}

.legal__content p + p {
  margin-top: 1.4em;
}

.legal__content ul {
  color: var(--color-gray);
  line-height: 1.9;
  padding-left: 1.4em;
  margin-top: 1em;
}

.legal__content li + li {
  margin-top: 0.4em;
}

/* ==========================================================================
   FOOTER
   ========================================================================== */

.footer {
  background: var(--color-dark);
  color: rgba(255, 255, 255, 0.7);
  padding: 64px 0 40px;
}

.footer__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

.footer__bottom {
  width: 100%;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 24px;
  margin-top: 16px;
}

.footer__logo {
  font-family: var(--font-en);
  font-size: 1.2rem;
  font-weight: 500;
  color: var(--color-white);
}

.footer__nav {
  display: flex;
  gap: 32px;
  font-family: var(--font-en);
  font-size: 0.85rem;
  letter-spacing: 0.06em;
}

.footer__legal {
  display: flex;
  gap: 20px;
  font-family: var(--font-en);
  font-size: 0.7rem;
  letter-spacing: 0.04em;
  opacity: 0.5;
}

.footer__copy {
  font-family: var(--font-en);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  opacity: 0.5;
}

/* ==========================================================================
   RESPONSIVE — Tablet
   ========================================================================== */

@media (max-width: 1024px) {
  .section-inner {
    padding: 0 32px;
  }

  .works__grid {
    gap: 32px;
  }
}

/* ==========================================================================
   RESPONSIVE — Mobile (SP)
   ========================================================================== */

@media (max-width: 768px) {
  :root {
    --section-padding: var(--section-padding-sp);
  }

  .br-pc {
    display: none;
  }

  .contact {
    padding: 80px 0;
  }

  .works--page {
    padding-top: calc(var(--header-height-sp) + 48px);
  }

  .legal--page {
    padding-top: calc(var(--header-height-sp) + 48px);
  }

  .header {
    height: var(--header-height-sp);
  }

  .header__inner {
    padding: 0 20px;
  }

  .header__toggle {
    display: flex;
  }

  .header__nav {
    position: fixed;
    top: 0;
    right: 0;
    width: 78%;
    max-width: 340px;
    height: 100vh;
    background: var(--color-black);
    transform: translateX(100%);
    transition: transform 0.5s var(--ease);
    display: flex;
    align-items: center;
    z-index: 1000;
  }

  .header__nav.is-open {
    transform: translateX(0);
  }

  .header__nav-list {
    flex-direction: column;
    align-items: flex-start;
    gap: 32px;
    padding: 0 40px;
  }

  .nav-link {
    font-size: 1.1rem;
  }

  .section-inner {
    padding: 0 24px;
  }

  .section-title {
    margin-bottom: 32px;
  }

  .works__grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .service-item {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
    padding: 32px 0;
  }

  .footer__inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 24px;
  }

  .footer__bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }
}

@media (max-width: 480px) {
  .btn-outline {
    padding: 16px 32px;
    font-size: 0.8rem;
  }

  .company__row {
    flex-direction: column;
    gap: 6px;
    padding: 16px 0;
  }
}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .hero__scroll-line::after {
    animation: none;
  }

  .marquee__track {
    animation: none;
  }
}