/* =============================================
   YUKINOBU NAKAMURA PORTFOLIO
   Color Theme: Purple Gradient
   ============================================= */

/* ---------- CSS Variables ---------- */
:root {
  --purple-900: #3b0764;
  --purple-800: #6b21a8;
  --purple-700: #7e22ce;
  --purple-600: #9333ea;
  --purple-500: #a855f7;
  --purple-400: #c084fc;
  --purple-300: #d8b4fe;
  --purple-200: #e9d5ff;
  --purple-100: #f3e8ff;
  --purple-50:  #faf5ff;

  --dark:       #0f0a1a;
  --dark-2:     #1a0f2e;
  --dark-3:     #2d1b4e;
  --gray-700:   #374151;
  --gray-600:   #4b5563;
  --gray-500:   #6b7280;
  --gray-400:   #9ca3af;
  --gray-200:   #e5e7eb;
  --gray-100:   #f3f4f6;
  --white:      #ffffff;

  --gradient-main: linear-gradient(135deg, #7e22ce 0%, #a855f7 50%, #c084fc 100%);
  --gradient-dark: linear-gradient(135deg, #3b0764 0%, #6b21a8 100%);
  --gradient-hero: linear-gradient(135deg, #0f0a1a 0%, #1a0f2e 50%, #2d1b4e 100%);
  --gradient-text: linear-gradient(135deg, #a855f7, #c084fc);

  --shadow-sm:   0 1px 3px rgba(0,0,0,.1), 0 1px 2px rgba(0,0,0,.06);
  --shadow-md:   0 4px 6px rgba(0,0,0,.07), 0 2px 4px rgba(0,0,0,.06);
  --shadow-lg:   0 10px 15px rgba(0,0,0,.1), 0 4px 6px rgba(0,0,0,.05);
  --shadow-xl:   0 20px 25px rgba(0,0,0,.1), 0 10px 10px rgba(0,0,0,.04);
  --shadow-purple: 0 10px 40px rgba(168,85,247,.25);

  --radius-sm:  4px;
  --radius-md:  8px;
  --radius-lg:  16px;
  --radius-xl:  24px;
  --radius-full: 9999px;

  --transition: all .3s cubic-bezier(.4,0,.2,1);
  --transition-slow: all .6s cubic-bezier(.4,0,.2,1);

  --font-sans: 'Inter', 'Noto Sans JP', sans-serif;
  --font-jp:   'Noto Sans JP', sans-serif;
}

/* ---------- Reset & Base ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  color: var(--gray-700);
  background: var(--white);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a  { color: inherit; text-decoration: none; transition: var(--transition); }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
input, textarea, select { font-family: inherit; }

/* ---------- Utilities ---------- */
.container {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 24px;
}

.mt-lg { margin-top: 2rem; }
.sp-none { display: none; }

@media (min-width: 768px) {
  .sp-none { display: inline; }
}

/* ---------- Gradient Text ---------- */
.gradient-text {
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  padding: .875rem 2rem;
  border-radius: var(--radius-full);
  font-size: .95rem;
  font-weight: 600;
  letter-spacing: .04em;
  transition: var(--transition);
  white-space: nowrap;
}

.btn--primary {
  background: var(--gradient-main);
  color: var(--white);
  box-shadow: var(--shadow-purple);
}
.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 15px 45px rgba(168,85,247,.4);
}

.btn--outline {
  border: 2px solid rgba(255,255,255,.5);
  color: var(--white);
  background: rgba(255,255,255,.05);
  backdrop-filter: blur(8px);
}
.btn--outline:hover {
  border-color: var(--purple-400);
  background: rgba(168,85,247,.15);
  transform: translateY(-2px);
}

.btn--lg {
  padding: 1rem 2.5rem;
  font-size: 1rem;
}

/* ---------- Section Commons ---------- */
.section { padding: 100px 0; }
.section--alt { background: var(--purple-50); }

.section-header {
  text-align: center;
  margin-bottom: 64px;
}

.section-eyebrow {
  font-size: .8rem;
  font-weight: 700;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--purple-600);
  margin-bottom: .75rem;
}

.section-title {
  font-size: clamp(1.8rem, 4vw, 2.75rem);
  font-weight: 700;
  color: var(--dark-2);
  font-family: var(--font-jp);
  margin-bottom: 1rem;
}

.section-line {
  width: 48px;
  height: 3px;
  background: var(--gradient-main);
  border-radius: var(--radius-full);
  margin: 1rem auto;
}

.section-desc {
  font-size: 1rem;
  color: var(--gray-600);
  line-height: 1.8;
  margin-top: 1rem;
}

/* =============================================
   HEADER
   ============================================= */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 1.25rem 0;
  transition: var(--transition);
}

.header.scrolled {
  background: rgba(10, 5, 20, .9);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(168,85,247,.15);
  padding: .875rem 0;
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.header__logo {
  display: flex;
  align-items: center;
  gap: .75rem;
  color: var(--white);
}

.logo-mark {
  width: 36px;
  height: 36px;
  background: var(--gradient-main);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  font-weight: 900;
  color: var(--white);
  flex-shrink: 0;
}

.logo-text {
  font-size: .95rem;
  font-weight: 600;
  letter-spacing: .05em;
}

.nav__list {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav__link {
  font-size: .85rem;
  font-weight: 600;
  letter-spacing: .08em;
  color: rgba(255,255,255,.75);
  position: relative;
}
.nav__link::after {
  content: '';
  position: absolute;
  bottom: -3px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-main);
  border-radius: var(--radius-full);
  transition: var(--transition);
}
.nav__link:hover { color: var(--white); }
.nav__link:hover::after { width: 100%; }

.nav__link--cta {
  background: var(--gradient-main);
  color: var(--white) !important;
  padding: .5rem 1.25rem;
  border-radius: var(--radius-full);
  font-size: .8rem;
  box-shadow: var(--shadow-purple);
}
.nav__link--cta::after { display: none; }
.nav__link--cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 25px rgba(168,85,247,.4);
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 4px;
}
.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--white);
  border-radius: var(--radius-full);
  transition: var(--transition);
}

/* =============================================
   HERO
   ============================================= */
.hero {
  position: relative;
  min-height: 100vh;
  background: var(--gradient-hero);
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 70% 40%, rgba(126,34,206,.3) 0%, transparent 60%),
    radial-gradient(ellipse 40% 40% at 20% 60%, rgba(168,85,247,.15) 0%, transparent 50%);
  pointer-events: none;
}

.hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  padding-top: 100px;
  padding-bottom: 80px;
}

.hero__eyebrow {
  font-size: .8rem;
  font-weight: 600;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--purple-400);
  margin-bottom: 1.25rem;
}

.hero__title {
  font-size: clamp(2.2rem, 5vw, 4rem);
  font-weight: 900;
  color: var(--white);
  line-height: 1.25;
  font-family: var(--font-jp);
  margin-bottom: 1.5rem;
}

.hero__subtitle {
  font-size: 1.05rem;
  color: rgba(255,255,255,.7);
  line-height: 1.85;
  margin-bottom: 2.5rem;
  font-family: var(--font-jp);
}

.hero__actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

/* Hero Visual */
.hero__visual {
  position: relative;
  height: 380px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(40px);
  animation: float 6s ease-in-out infinite;
}
.orb--1 {
  width: 280px; height: 280px;
  background: radial-gradient(circle, rgba(126,34,206,.5), rgba(168,85,247,.2));
  top: 10%; left: 10%;
  animation-delay: 0s;
}
.orb--2 {
  width: 180px; height: 180px;
  background: radial-gradient(circle, rgba(192,132,252,.4), transparent);
  bottom: 15%; right: 15%;
  animation-delay: 2s;
}
.orb--3 {
  width: 120px; height: 120px;
  background: radial-gradient(circle, rgba(216,180,254,.3), transparent);
  top: 20%; right: 5%;
  animation-delay: 4s;
}

@keyframes float {
  0%, 100% { transform: translateY(0px) scale(1); }
  50% { transform: translateY(-20px) scale(1.05); }
}

.hero__card {
  position: relative;
  z-index: 2;
  background: rgba(255,255,255,.08);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255,255,255,.15);
  border-radius: var(--radius-xl);
  padding: 2.5rem 3rem;
  text-align: center;
  box-shadow: 0 25px 60px rgba(0,0,0,.3);
}

.hero__card-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__card-text {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--white);
  letter-spacing: .05em;
}

/* Hero Scroll */
.hero__scroll {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .5rem;
  color: rgba(255,255,255,.4);
  font-size: .7rem;
  font-weight: 600;
  letter-spacing: .2em;
  text-transform: uppercase;
}
.scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, rgba(168,85,247,.6), transparent);
  animation: scrollAnim 2s ease-in-out infinite;
}
@keyframes scrollAnim {
  0%, 100% { transform: scaleY(1); opacity: 1; }
  50% { transform: scaleY(.6); opacity: .4; }
}

/* =============================================
   NUMBERS
   ============================================= */
.numbers {
  background: var(--gradient-dark);
  padding: 64px 0;
}

.numbers__inner {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
}

.numbers__item {
  text-align: center;
  position: relative;
}
.numbers__item:not(:last-child)::after {
  content: '';
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  height: 40px;
  width: 1px;
  background: rgba(255,255,255,.15);
}

.numbers__value {
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  font-weight: 900;
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}
.numbers__unit {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--purple-400);
}
.numbers__label {
  font-size: .85rem;
  color: rgba(255,255,255,.5);
  margin-top: .5rem;
  font-family: var(--font-jp);
}

/* =============================================
   ABOUT
   ============================================= */
.about__grid {
  display: grid;
  grid-template-columns: 360px 1fr;
  gap: 5rem;
  align-items: start;
}

.about__image-wrap {
  position: relative;
}

.about__image-placeholder {
  width: 100%;
  aspect-ratio: 1;
  max-width: 340px;
  background: var(--gradient-dark);
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-purple);
  overflow: hidden;
}
.about__image-placeholder::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 70% 30%, rgba(168,85,247,.3), transparent 60%);
  border-radius: var(--radius-xl);
}

.about__initials {
  font-size: 6rem;
  font-weight: 900;
  color: rgba(255,255,255,.15);
  letter-spacing: -.05em;
}

.about__badge {
  position: absolute;
  bottom: -16px;
  right: -16px;
  background: var(--white);
  border-radius: var(--radius-full);
  padding: .6rem 1.25rem;
  font-size: .8rem;
  font-weight: 700;
  color: var(--purple-700);
  box-shadow: var(--shadow-xl);
  display: flex;
  align-items: center;
  gap: .5rem;
}

.about__name {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--dark-2);
  font-family: var(--font-jp);
  margin-bottom: .25rem;
}
.about__role {
  font-size: .95rem;
  font-weight: 600;
  color: var(--purple-600);
  letter-spacing: .05em;
  margin-bottom: 1.5rem;
}
.about__text {
  color: var(--gray-600);
  line-height: 1.85;
  margin-bottom: 1rem;
  font-family: var(--font-jp);
}

.about__skills {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  margin-top: 1.5rem;
}
.skill-tag {
  padding: .4rem 1rem;
  background: var(--purple-100);
  color: var(--purple-700);
  border-radius: var(--radius-full);
  font-size: .8rem;
  font-weight: 600;
  border: 1px solid var(--purple-200);
}

/* =============================================
   SERVICE
   ============================================= */
.service__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.service__card {
  background: var(--white);
  border-radius: var(--radius-xl);
  padding: 2.5rem;
  border: 1px solid var(--gray-200);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.service__card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--gradient-main);
  transform: scaleX(0);
  transform-origin: left;
  transition: var(--transition);
}
.service__card:hover {
  box-shadow: var(--shadow-purple);
  border-color: var(--purple-200);
  transform: translateY(-4px);
}
.service__card:hover::before { transform: scaleX(1); }

.service__card--featured {
  background: var(--gradient-dark);
  border-color: transparent;
  color: var(--white);
}
.service__card--featured .service__text { color: rgba(255,255,255,.75); }
.service__card--featured .service__list li { color: rgba(255,255,255,.7); }
.service__card--featured .service__list li::before { background: var(--purple-400); }
.service__card--featured:hover { border-color: transparent; }

.service__badge {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  background: var(--gradient-main);
  color: var(--white);
  padding: .2rem .75rem;
  border-radius: var(--radius-full);
  font-size: .7rem;
  font-weight: 700;
  letter-spacing: .05em;
}

.service__icon {
  font-size: 2.5rem;
  margin-bottom: 1.25rem;
}
.service__title {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--dark-2);
  font-family: var(--font-jp);
  margin-bottom: .75rem;
}
.service__card--featured .service__title { color: var(--white); }

.service__text {
  font-size: .92rem;
  color: var(--gray-600);
  line-height: 1.8;
  margin-bottom: 1.25rem;
  font-family: var(--font-jp);
}

.service__list {
  display: flex;
  flex-direction: column;
  gap: .5rem;
}
.service__list li {
  font-size: .87rem;
  color: var(--gray-500);
  display: flex;
  align-items: center;
  gap: .5rem;
  font-family: var(--font-jp);
}
.service__list li::before {
  content: '';
  width: 6px; height: 6px;
  background: var(--purple-500);
  border-radius: 50%;
  flex-shrink: 0;
}

/* =============================================
   WORKS
   ============================================= */
.works__filter {
  display: flex;
  gap: .5rem;
  justify-content: center;
  margin-bottom: 3rem;
  flex-wrap: wrap;
}

.filter-btn {
  padding: .5rem 1.5rem;
  border-radius: var(--radius-full);
  font-size: .85rem;
  font-weight: 600;
  color: var(--gray-600);
  background: var(--gray-100);
  border: 1px solid var(--gray-200);
  transition: var(--transition);
}
.filter-btn.active,
.filter-btn:hover {
  background: var(--gradient-main);
  color: var(--white);
  border-color: transparent;
  box-shadow: var(--shadow-purple);
}

.works__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.works__card {
  background: var(--white);
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--gray-200);
  transition: var(--transition);
}
.works__card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-purple);
  border-color: var(--purple-200);
}
.works__card[style*="display: none"] { display: none !important; }

.works__thumb {
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
}
.works__thumb--1 { background: linear-gradient(135deg, #7e22ce, #c084fc); }
.works__thumb--2 { background: linear-gradient(135deg, #1e1b4b, #7c3aed); }
.works__thumb--3 { background: linear-gradient(135deg, #4c1d95, #a855f7); }
.works__thumb--4 { background: linear-gradient(135deg, #6b21a8, #e9d5ff); }
.works__thumb--5 { background: linear-gradient(135deg, #2e1065, #9333ea); }
.works__thumb--6 { background: linear-gradient(135deg, #581c87, #d8b4fe); }

.works__overlay {
  position: absolute;
  inset: 0;
  background: rgba(15,10,26,.5);
  display: flex;
  align-items: flex-end;
  padding: 1rem;
  opacity: 0;
  transition: var(--transition);
}
.works__card:hover .works__overlay { opacity: 1; }

.works__tag {
  background: var(--gradient-main);
  color: var(--white);
  padding: .3rem .875rem;
  border-radius: var(--radius-full);
  font-size: .75rem;
  font-weight: 700;
}

.works__info {
  padding: 1.5rem;
}
.works__title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--dark-2);
  font-family: var(--font-jp);
  margin-bottom: .5rem;
}
.works__desc {
  font-size: .85rem;
  color: var(--gray-500);
  line-height: 1.7;
  margin-bottom: .875rem;
  font-family: var(--font-jp);
}
.works__tech {
  display: flex;
  flex-wrap: wrap;
  gap: .4rem;
}
.works__tech span {
  font-size: .72rem;
  font-weight: 600;
  color: var(--purple-700);
  background: var(--purple-100);
  padding: .2rem .6rem;
  border-radius: var(--radius-sm);
}

/* =============================================
   NEWS
   ============================================= */
.news__list {
  display: flex;
  flex-direction: column;
  gap: 0;
  max-width: 800px;
  margin: 0 auto;
  border-top: 1px solid var(--gray-200);
}

.news__item {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  padding: 1.25rem 0;
  border-bottom: 1px solid var(--gray-200);
  transition: var(--transition);
}
.news__item:hover { padding-left: .5rem; }

.news__date {
  font-size: .85rem;
  color: var(--gray-500);
  white-space: nowrap;
  font-weight: 500;
}

.news__category {
  font-size: .72rem;
  font-weight: 700;
  color: var(--purple-700);
  background: var(--purple-100);
  border: 1px solid var(--purple-200);
  padding: .2rem .75rem;
  border-radius: var(--radius-full);
  white-space: nowrap;
}

.news__title-link {
  font-size: .95rem;
  color: var(--gray-700);
  font-family: var(--font-jp);
  font-weight: 500;
  flex: 1;
}
.news__title-link:hover { color: var(--purple-700); }

/* =============================================
   CONTACT
   ============================================= */
.contact__wrap {
  max-width: 720px;
  margin: 0 auto;
}

.contact__form {
  background: var(--white);
  border-radius: var(--radius-xl);
  padding: 3rem;
  border: 1px solid var(--gray-200);
  box-shadow: var(--shadow-lg);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

.form-group {
  margin-bottom: 1.25rem;
}
.form-group label {
  display: block;
  font-size: .85rem;
  font-weight: 600;
  color: var(--gray-700);
  margin-bottom: .5rem;
  font-family: var(--font-jp);
}
.required {
  color: var(--purple-600);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: .75rem 1rem;
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-md);
  font-size: .95rem;
  color: var(--gray-700);
  background: var(--white);
  transition: var(--transition);
  outline: none;
  appearance: none;
  -webkit-appearance: none;
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--purple-500);
  box-shadow: 0 0 0 3px rgba(168,85,247,.15);
}
.form-group textarea { resize: vertical; min-height: 140px; }

.form-group--check {
  margin-bottom: 1.75rem;
}
.checkbox-label {
  display: flex;
  align-items: center;
  gap: .75rem;
  font-size: .9rem;
  color: var(--gray-600);
  cursor: pointer;
  font-family: var(--font-jp);
}
.checkbox-label input[type="checkbox"] {
  width: 18px;
  height: 18px;
  accent-color: var(--purple-600);
  cursor: pointer;
}
.checkbox-label a { color: var(--purple-700); text-decoration: underline; }

.form-submit { text-align: center; }

.form-message {
  margin-top: 1rem;
  text-align: center;
  font-size: .9rem;
  font-family: var(--font-jp);
}
.form-message.success { color: #059669; }
.form-message.error   { color: #dc2626; }

/* =============================================
   FOOTER
   ============================================= */
.footer {
  background: var(--dark);
  color: rgba(255,255,255,.6);
}

.footer__inner {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 5rem;
  padding-top: 64px;
  padding-bottom: 48px;
}

.footer__logo {
  display: flex;
  align-items: center;
  gap: .75rem;
  color: var(--white);
  margin-bottom: .875rem;
}
.footer__tagline {
  font-size: .87rem;
  color: rgba(255,255,255,.4);
  font-family: var(--font-jp);
  margin-bottom: 1.5rem;
}

.footer__social {
  display: flex;
  gap: .75rem;
}
.social-btn {
  width: 40px; height: 40px;
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,.6);
  transition: var(--transition);
}
.social-btn:hover {
  background: var(--gradient-main);
  border-color: transparent;
  color: var(--white);
  transform: translateY(-2px);
}

.footer__nav {
  display: flex;
  gap: 4rem;
}
.footer__nav-col { display: flex; flex-direction: column; gap: .875rem; }
.footer__nav-head {
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .15em;
  text-transform: uppercase;
  color: var(--white);
  margin-bottom: .25rem;
}
.footer__nav-col ul { display: flex; flex-direction: column; gap: .6rem; }
.footer__nav-col a {
  font-size: .87rem;
  color: rgba(255,255,255,.5);
  font-family: var(--font-jp);
}
.footer__nav-col a:hover { color: var(--purple-300); }

.footer__bottom {
  border-top: 1px solid rgba(255,255,255,.08);
  padding: 1.25rem 0;
}
.footer__bottom .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.footer__bottom p {
  font-size: .8rem;
  color: rgba(255,255,255,.35);
}
.footer__privacy {
  font-size: .8rem;
  color: rgba(255,255,255,.4);
}
.footer__privacy:hover { color: var(--purple-300); }

/* =============================================
   BACK TO TOP
   ============================================= */
.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 48px; height: 48px;
  background: var(--gradient-main);
  color: var(--white);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-purple);
  opacity: 0;
  pointer-events: none;
  transform: translateY(10px);
  transition: var(--transition);
  z-index: 900;
}
.back-to-top.visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}
.back-to-top:hover { transform: translateY(-3px); }

/* =============================================
   ANIMATIONS (Scroll Reveal)
   ============================================= */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity .7s ease, transform .7s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}
.reveal-delay-1 { transition-delay: .1s; }
.reveal-delay-2 { transition-delay: .2s; }
.reveal-delay-3 { transition-delay: .3s; }
.reveal-delay-4 { transition-delay: .4s; }

/* =============================================
   RESPONSIVE
   ============================================= */
@media (max-width: 1023px) {
  .about__grid { grid-template-columns: 1fr; gap: 3rem; }
  .about__image-placeholder { max-width: 260px; margin: 0 auto; }
  .works__grid { grid-template-columns: repeat(2, 1fr); }
  .footer__inner { grid-template-columns: 1fr; gap: 3rem; }
  .footer__nav { flex-wrap: wrap; gap: 2.5rem; }
}

@media (max-width: 767px) {
  .section { padding: 72px 0; }

  /* Header */
  .nav {
    position: fixed;
    top: 0; right: 0; bottom: 0;
    width: 280px;
    background: var(--dark-2);
    border-left: 1px solid rgba(168,85,247,.2);
    padding: 100px 2rem 2rem;
    transform: translateX(100%);
    transition: var(--transition);
    z-index: 999;
  }
  .nav.open { transform: translateX(0); }
  .nav__list { flex-direction: column; align-items: flex-start; gap: 1.5rem; }
  .nav__link { font-size: 1rem; color: rgba(255,255,255,.8); }
  .hamburger { display: flex; z-index: 1001; position: relative; }
  .hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
  .hamburger.active span:nth-child(2) { opacity: 0; }
  .hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

  /* Hero */
  .hero__inner {
    grid-template-columns: 1fr;
    text-align: center;
    padding-top: 120px;
    padding-bottom: 100px;
  }
  .hero__actions { justify-content: center; }
  .hero__visual { display: none; }

  /* Numbers */
  .numbers__inner { grid-template-columns: repeat(2, 1fr); gap: 2rem; }
  .numbers__item::after { display: none; }

  /* Service */
  .service__grid { grid-template-columns: 1fr; }

  /* Works */
  .works__grid { grid-template-columns: 1fr; }

  /* News */
  .news__item {
    flex-direction: column;
    align-items: flex-start;
    gap: .5rem;
  }

  /* Contact */
  .contact__form { padding: 2rem 1.25rem; }
  .form-row { grid-template-columns: 1fr; }

  /* Footer */
  .footer__nav { flex-direction: column; gap: 2rem; }
  .footer__bottom .container { flex-direction: column; gap: .5rem; text-align: center; }

  /* Back to top */
  .back-to-top { bottom: 1.25rem; right: 1.25rem; }
}

@media (max-width: 480px) {
  .hero__title { font-size: 2rem; }
  .btn { padding: .75rem 1.5rem; font-size: .875rem; }
  .numbers__inner { grid-template-columns: 1fr 1fr; }
}