/* ==========================================================================
   SERENO - Stylesheet
   ========================================================================== */

:root {
  --color-bg: #0a0a0a;
  --color-bg-alt: #141414;
  --color-surface: #1a1a1a;
  --color-border: #262626;
  --color-text: #ececec;
  --color-text-muted: #a3a3a3;
  --color-gold: #c6a15b;
  --color-gold-light: #d9bb84;
  --color-bronze: #8c6a43;
  --font-base: "Noto Sans JP", "Hiragino Sans", "Yu Gothic", sans-serif;
  --max-width: 1140px;
  --transition: 0.25s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-base);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.8;
  font-size: 16px;
  overflow-x: hidden;
}

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

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

ul {
  list-style: none;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 96px 0;
}

.section-alt {
  background-color: var(--color-bg-alt);
}

.section-head {
  text-align: center;
  margin-bottom: 56px;
}

.section-label {
  display: inline-block;
  font-size: 13px;
  letter-spacing: 0.2em;
  color: var(--color-gold);
  text-transform: uppercase;
  margin-bottom: 12px;
}

.section-title {
  font-size: clamp(26px, 4vw, 38px);
  font-weight: 700;
  letter-spacing: 0.04em;
}

.section-desc {
  margin-top: 16px;
  color: var(--color-text-muted);
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 16px 36px;
  border-radius: 2px;
  font-weight: 700;
  letter-spacing: 0.05em;
  font-size: 15px;
  transition: all var(--transition);
  border: 1px solid transparent;
  cursor: pointer;
}

.btn-primary {
  background-color: var(--color-gold);
  color: #0d0d0d;
}

.btn-primary:hover {
  background-color: var(--color-gold-light);
  transform: translateY(-2px);
}

.btn-outline {
  border-color: var(--color-gold);
  color: var(--color-gold);
  background: transparent;
}

.btn-outline:hover {
  background-color: var(--color-gold);
  color: #0d0d0d;
}

.btn-block {
  width: 100%;
}

/* ---- Header ---- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background-color: rgba(13, 13, 13, 0.85);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
}

.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}

.logo {
  font-size: 20px;
  font-weight: 800;
  letter-spacing: 0.12em;
  color: var(--color-text);
  display: flex;
  align-items: center;
}

.logo span {
  color: var(--color-gold);
}

.logo-img {
  height: 44px;
  width: auto;
  border-radius: 6px;
  display: block;
}

.nav-list {
  display: flex;
  gap: clamp(16px, 2vw, 40px);
}

.nav-list a {
  font-size: 14px;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
  transition: color var(--transition);
  position: relative;
  padding-bottom: 4px;
}

.nav-list a:hover,
.nav-list a.active {
  color: var(--color-text);
}

.nav-list a.active::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 1px;
  background-color: var(--color-gold);
}

.nav-cta {
  display: flex;
  align-items: center;
  gap: 24px;
}

.nav-cta .btn {
  padding: 10px 22px;
  font-size: 13px;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.nav-toggle span {
  width: 24px;
  height: 2px;
  background-color: var(--color-text);
  transition: all var(--transition);
}

/* ---- Hero ---- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 76px;
  background:
    radial-gradient(ellipse at 70% 20%, rgba(201, 162, 39, 0.12), transparent 55%),
    linear-gradient(180deg, #0d0d0d 0%, #141414 100%);
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(90deg, rgba(255, 255, 255, 0.02) 0px, rgba(255, 255, 255, 0.02) 1px, transparent 1px, transparent 80px);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 640px;
}

.hero-eyebrow {
  color: var(--color-gold);
  letter-spacing: 0.25em;
  font-size: 13px;
  text-transform: uppercase;
  margin-bottom: 20px;
  display: block;
}

.hero-title {
  font-size: clamp(34px, 6vw, 58px);
  font-weight: 800;
  line-height: 1.35;
  letter-spacing: 0.02em;
}

.hero-title em {
  font-style: normal;
  color: var(--color-gold);
}

.hero-text {
  margin-top: 24px;
  color: var(--color-text-muted);
  font-size: 16px;
  max-width: 480px;
}

.hero-actions {
  margin-top: 40px;
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-stats {
  position: relative;
  z-index: 1;
  display: flex;
  gap: 48px;
  margin-top: 72px;
  flex-wrap: wrap;
}

.hero-stat-num {
  font-size: 32px;
  font-weight: 800;
  color: var(--color-gold);
}

.hero-stat-label {
  font-size: 13px;
  color: var(--color-text-muted);
  margin-top: 4px;
}

/* ---- Page hero (sub pages) ---- */
.page-hero {
  padding: 160px 0 64px;
  text-align: center;
  background:
    radial-gradient(ellipse at 50% 0%, rgba(201, 162, 39, 0.12), transparent 60%),
    var(--color-bg);
  border-bottom: 1px solid var(--color-border);
}

.page-hero .section-label {
  margin-bottom: 16px;
}

.page-hero h1 {
  font-size: clamp(30px, 5vw, 44px);
  font-weight: 800;
  letter-spacing: 0.03em;
}

.breadcrumb {
  margin-top: 20px;
  font-size: 13px;
  color: var(--color-text-muted);
}

.breadcrumb a {
  color: var(--color-text-muted);
}

.breadcrumb a:hover {
  color: var(--color-gold);
}

/* ---- Icon box ---- */
.icon-box {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  border: 1px solid var(--color-gold);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-gold);
  margin-bottom: 24px;
}

/* ---- Grid layouts ---- */
.grid {
  display: grid;
  gap: 32px;
}

.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

.grid-4 {
  grid-template-columns: repeat(4, 1fr);
}

.grid-2 {
  grid-template-columns: repeat(2, 1fr);
}

.card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  padding: 40px 32px;
  border-radius: 4px;
  transition: transform var(--transition), border-color var(--transition);
}

.card:hover {
  transform: translateY(-6px);
  border-color: var(--color-gold);
}

.card h3 {
  font-size: 19px;
  font-weight: 700;
  margin-bottom: 12px;
  letter-spacing: 0.02em;
}

.card p {
  color: var(--color-text-muted);
  font-size: 14.5px;
}

/* ---- Media placeholder (no external images) ---- */
.media-block {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 3;
  border-radius: 4px;
  overflow: hidden;
  background: linear-gradient(135deg, #1c1c1c 0%, #262626 60%, #2f2a17 100%);
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
}

.media-block::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(201, 162, 39, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(201, 162, 39, 0.08) 1px, transparent 1px);
  background-size: 28px 28px;
}

.media-block svg {
  position: relative;
  z-index: 1;
  width: 30%;
  color: rgba(201, 162, 39, 0.55);
}

.media-block.tall {
  aspect-ratio: 3 / 4;
}

.media-block.wide {
  aspect-ratio: 16 / 9;
}

/* ---- About split ---- */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.split-text .section-label {
  margin-bottom: 12px;
}

.split-text h2 {
  font-size: clamp(24px, 3.5vw, 32px);
  font-weight: 800;
  margin-bottom: 20px;
  line-height: 1.5;
}

.split-text p {
  color: var(--color-text-muted);
  margin-bottom: 16px;
}

.check-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-top: 12px;
  color: var(--color-text-muted);
  font-size: 14.5px;
}

.check-list li::before {
  content: "✓";
  color: var(--color-gold);
  font-weight: 700;
}

/* ---- Trainer cards ---- */
.trainer-card {
  text-align: center;
}

.trainer-photo {
  aspect-ratio: 1;
  border-radius: 50%;
  margin: 0 auto 24px;
  width: 160px;
}

.trainer-card h3 {
  margin-bottom: 4px;
}

.trainer-role {
  color: var(--color-gold);
  font-size: 13px;
  letter-spacing: 0.05em;
  margin-bottom: 16px;
}

/* ---- Steps ---- */
.steps {
  counter-reset: step;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}

.step {
  position: relative;
  padding-top: 8px;
}

.step-num {
  font-size: 42px;
  font-weight: 800;
  color: transparent;
  -webkit-text-stroke: 1px var(--color-gold);
  margin-bottom: 16px;
}

.step h3 {
  font-size: 17px;
  margin-bottom: 8px;
  font-weight: 700;
}

.step p {
  color: var(--color-text-muted);
  font-size: 14px;
}

/* ---- Pricing ---- */
.price-table {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.price-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  padding: 40px 32px;
  text-align: center;
  display: flex;
  flex-direction: column;
}

.price-card.featured {
  border-color: var(--color-gold);
  background: linear-gradient(180deg, rgba(201, 162, 39, 0.08), transparent 40%), var(--color-surface);
  position: relative;
}

.price-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background-color: var(--color-gold);
  color: #0d0d0d;
  font-size: 12px;
  font-weight: 700;
  padding: 6px 16px;
  border-radius: 20px;
  letter-spacing: 0.05em;
}

.price-name {
  font-size: 15px;
  letter-spacing: 0.1em;
  color: var(--color-text-muted);
  text-transform: uppercase;
  margin-bottom: 16px;
}

.price-amount {
  font-size: 40px;
  font-weight: 800;
  margin-bottom: 4px;
}

.price-amount span {
  font-size: 14px;
  font-weight: 400;
  color: var(--color-text-muted);
}

.price-unit {
  color: var(--color-text-muted);
  font-size: 13px;
  margin-bottom: 28px;
}

.price-features {
  text-align: left;
  margin-bottom: 32px;
  flex-grow: 1;
}

.price-features li {
  padding: 10px 0;
  border-bottom: 1px solid var(--color-border);
  font-size: 14px;
  color: var(--color-text-muted);
  display: flex;
  gap: 10px;
}

.price-features li::before {
  content: "✓";
  color: var(--color-gold);
}

.price-note {
  margin-top: 40px;
  text-align: center;
  color: var(--color-text-muted);
  font-size: 13.5px;
}

/* ---- Menu list (program page) ---- */
.menu-list {
  display: grid;
  gap: 24px;
}

.menu-item {
  display: grid;
  grid-template-columns: 120px 1fr auto;
  gap: 24px;
  align-items: center;
  padding: 28px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 4px;
}

.menu-item-icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  border: 1px solid var(--color-gold);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-gold);
}

.menu-item h3 {
  font-size: 17px;
  margin-bottom: 6px;
}

.menu-item p {
  color: var(--color-text-muted);
  font-size: 14px;
}

.menu-item-price {
  font-weight: 700;
  color: var(--color-gold);
  font-size: 18px;
  white-space: nowrap;
}

/* ---- Voice / testimonials ---- */
.voice-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  padding: 32px;
}

.voice-quote {
  color: var(--color-text-muted);
  font-size: 14.5px;
  margin-bottom: 20px;
}

.voice-person {
  display: flex;
  align-items: center;
  gap: 14px;
}

.voice-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, #2f2a17, #1c1c1c);
  border: 1px solid var(--color-gold);
}

.voice-name {
  font-size: 14px;
  font-weight: 700;
}

.voice-meta {
  font-size: 12px;
  color: var(--color-text-muted);
}

.stars {
  color: var(--color-gold);
  font-size: 13px;
  margin-bottom: 10px;
  letter-spacing: 2px;
}

/* ---- FAQ ---- */
.faq-item {
  border-bottom: 1px solid var(--color-border);
}

.faq-question {
  width: 100%;
  text-align: left;
  padding: 24px 0;
  background: none;
  border: none;
  color: var(--color-text);
  font-size: 16px;
  font-weight: 700;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  gap: 24px;
}

.faq-question .icon {
  color: var(--color-gold);
  font-size: 20px;
  transition: transform var(--transition);
  flex-shrink: 0;
}

.faq-item.open .faq-question .icon {
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition);
  color: var(--color-text-muted);
  font-size: 14.5px;
}

.faq-answer-inner {
  padding-bottom: 24px;
}

/* ---- CTA banner ---- */
.cta-banner {
  background: linear-gradient(135deg, #1c1c1c, #2a230f);
  border: 1px solid var(--color-gold);
  border-radius: 4px;
  padding: 64px 48px;
  text-align: center;
}

.cta-banner h2 {
  font-size: clamp(24px, 4vw, 32px);
  font-weight: 800;
  margin-bottom: 16px;
}

.cta-banner p {
  color: var(--color-text-muted);
  margin-bottom: 32px;
}

.cta-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ---- Access page ---- */
.info-table {
  width: 100%;
  border-collapse: collapse;
}

.info-table tr {
  border-bottom: 1px solid var(--color-border);
}

.info-table th,
.info-table td {
  text-align: left;
  padding: 18px 0;
  vertical-align: top;
}

.info-table th {
  width: 140px;
  color: var(--color-gold);
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.05em;
}

.info-table td {
  color: var(--color-text-muted);
  font-size: 14.5px;
}

.map-block {
  aspect-ratio: 16 / 10;
  background: linear-gradient(135deg, #1c1c1c, #262626);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  color: var(--color-text-muted);
  font-size: 14px;
  text-align: center;
}

.map-block svg {
  width: 40px;
  color: var(--color-gold);
}

/* ---- Contact form ---- */
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: 64px;
}

.contact-info-item {
  display: flex;
  gap: 16px;
  margin-bottom: 32px;
}

.contact-info-item .icon-box {
  flex-shrink: 0;
  margin-bottom: 0;
}

.contact-info-item h3 {
  font-size: 15px;
  margin-bottom: 6px;
}

.contact-info-item p {
  color: var(--color-text-muted);
  font-size: 14px;
}

.form-group {
  margin-bottom: 24px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.form-group label {
  display: block;
  font-size: 13.5px;
  margin-bottom: 8px;
  color: var(--color-text-muted);
}

.form-group label .required {
  color: var(--color-gold);
  margin-left: 4px;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 2px;
  padding: 14px 16px;
  color: var(--color-text);
  font-family: inherit;
  font-size: 14.5px;
  transition: border-color var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-gold);
}

.form-group textarea {
  resize: vertical;
  min-height: 140px;
}

.form-note {
  font-size: 12.5px;
  color: var(--color-text-muted);
  margin-top: 24px;
}

.form-success {
  display: none;
  margin-top: 24px;
  padding: 18px 20px;
  background-color: rgba(201, 162, 39, 0.1);
  border: 1px solid var(--color-gold);
  border-radius: 4px;
  font-size: 14px;
  color: var(--color-gold-light);
}

.form-success.show {
  display: block;
}

/* ---- Footer ---- */
.footer {
  background-color: var(--color-bg-alt);
  border-top: 1px solid var(--color-border);
  padding: 72px 0 32px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 48px;
  padding-bottom: 48px;
}

.footer-logo {
  font-size: 20px;
  font-weight: 800;
  letter-spacing: 0.1em;
  margin-bottom: 16px;
}

.footer-logo span {
  color: var(--color-gold);
}

.footer-logo-img {
  height: 48px;
  width: auto;
  border-radius: 6px;
  display: block;
}

.footer p {
  color: var(--color-text-muted);
  font-size: 14px;
}

.footer h4 {
  font-size: 14px;
  letter-spacing: 0.05em;
  margin-bottom: 20px;
  color: var(--color-text);
}

.footer-links li {
  margin-bottom: 12px;
}

.footer-links a {
  color: var(--color-text-muted);
  font-size: 14px;
  transition: color var(--transition);
}

.footer-links a:hover {
  color: var(--color-gold);
}

.footer-sns {
  display: flex;
  gap: 12px;
  margin-top: 20px;
}

.footer-sns a {
  width: 38px;
  height: 38px;
  border: 1px solid var(--color-border);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  transition: all var(--transition);
}

.footer-sns a:hover {
  border-color: var(--color-gold);
  color: var(--color-gold);
}

.footer-bottom {
  border-top: 1px solid var(--color-border);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  font-size: 12.5px;
  color: var(--color-text-muted);
  flex-wrap: wrap;
  gap: 8px;
}

/* ---- Utility ---- */
.text-center {
  text-align: center;
}

.mt-32 {
  margin-top: 32px;
}

/* ---- Responsive ---- */
@media (max-width: 960px) {
  .grid-3,
  .grid-4,
  .price-table {
    grid-template-columns: repeat(2, 1fr);
  }

  .steps {
    grid-template-columns: repeat(2, 1fr);
  }

  .split,
  .contact-layout {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 900px) {
  .nav-list,
  .nav-cta .btn-outline {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .header.open .nav-list {
    display: flex;
    position: absolute;
    top: 76px;
    left: 0;
    right: 0;
    flex-direction: column;
    background-color: var(--color-bg);
    padding: 24px;
    gap: 20px;
    border-bottom: 1px solid var(--color-border);
  }
}

@media (max-width: 720px) {
  .grid-3,
  .grid-4,
  .price-table,
  .steps {
    grid-template-columns: 1fr;
  }

  .menu-item {
    grid-template-columns: 1fr;
    text-align: left;
  }

  .footer-grid {
    grid-template-columns: 1fr;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .section {
    padding: 64px 0;
  }
}