/* HyperAILab Website Plans — black & gold design system */

:root {
  --primary-black: #0a0a0a;
  --secondary-black: #1a1a1a;
  --tertiary-black: #2a2a2a;
  --primary-gold: #ffd700;
  --secondary-gold: #ffed4e;
  --tertiary-gold: #b8860b;
  --accent-gold: #daa520;
  --text: #ffffff;
  --text-muted: rgba(255, 255, 255, 0.78);
  --gold-gradient: linear-gradient(135deg, #ffd700 0%, #ffed4e 50%, #daa520 100%);
  --font-primary: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-japanese: "Noto Sans JP", "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic", "Meiryo", sans-serif;
  --font-mono: "JetBrains Mono", "Fira Code", ui-monospace, monospace;
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-2xl: 4rem;
  --space-3xl: 6rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --shadow-glow: 0 0 20px rgba(255, 215, 0, 0.3);
  --shadow-xl: 0 20px 25px -5px rgba(255, 215, 0, 0.1), 0 10px 10px -5px rgba(255, 215, 0, 0.04);
  --transition-fast: 0.15s ease-out;
  --transition-normal: 0.3s ease-out;
  --nav-h: 5.75rem;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  scroll-padding-top: 6.5rem;
}

body {
  margin: 0;
  font-family: var(--font-primary);
  line-height: 1.6;
  color: var(--text);
  background: var(--primary-black);
  overflow-x: hidden;
  padding-top: var(--nav-h);
  -webkit-font-smoothing: antialiased;
  -webkit-tap-highlight-color: transparent;
}

body[lang="ja"] {
  font-family: var(--font-japanese), var(--font-primary);
  line-break: strict;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--primary-gold);
  color: var(--primary-black);
  padding: 0.75rem 1rem;
  z-index: 2000;
}

.skip-link:focus {
  left: 1rem;
  top: 1rem;
}

.animated-background {
  position: fixed;
  inset: 0;
  z-index: -1;
  background-color: var(--primary-black);
  background-image: url("../assets/honeycomb.svg");
  background-size: 84px 52px;
  pointer-events: none;
}

.animated-background::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 18% 82%, rgba(255, 215, 0, 0.05) 0%, transparent 55%),
    radial-gradient(circle at 82% 18%, rgba(255, 215, 0, 0.04) 0%, transparent 55%);
}

.animated-background::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    75deg,
    transparent 0%,
    transparent 30%,
    rgba(255, 255, 255, 0.06) 45%,
    rgba(255, 215, 0, 0.12) 50%,
    rgba(255, 255, 255, 0.06) 55%,
    transparent 70%,
    transparent 100%
  );
  background-size: 300% 100%;
  animation: lightWave 10s ease-in-out infinite;
  mix-blend-mode: screen;
}

@keyframes lightWave {
  from { background-position: -100% 0; }
  to { background-position: 200% 0; }
}

.container {
  width: min(1200px, calc(100% - 2rem));
  margin-inline: auto;
}

.container-wide {
  width: min(1400px, calc(100% - 2rem));
  margin-inline: auto;
}

h1, h2, h3 {
  font-weight: 700;
  line-height: 1.2;
  margin: 0 0 var(--space-md);
  background: var(--gold-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: var(--primary-gold);
}

h1 { font-size: clamp(2.25rem, 5vw, 3.75rem); }
h2 { font-size: clamp(1.75rem, 3.5vw, 2.75rem); }
h3 { font-size: clamp(1.15rem, 2vw, 1.45rem); }

p {
  color: var(--text);
  margin: 0 0 var(--space-md);
  font-size: 1.05rem;
  line-height: 1.7;
}

a {
  color: var(--text);
  transition: color var(--transition-normal);
}

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

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(10, 10, 10, 0.9);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 215, 0, 0.1);
}

.navbar.scrolled {
  background: rgba(10, 10, 10, 0.95);
  box-shadow: 0 10px 15px -3px rgba(255, 215, 0, 0.08);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  padding: 0.85rem 0;
  min-height: var(--nav-h);
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: #fff;
  font-weight: 700;
  font-size: 1.25rem;
}

.logo img {
  width: 32px;
  height: 32px;
  object-fit: contain;
}

.logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.logo-mark { color: #fff; }
.logo-sub {
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--primary-gold);
}

.logo:hover .logo-mark {
  color: var(--primary-gold);
  text-shadow: 0 0 15px rgba(255, 215, 0, 0.7);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.65rem;
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid rgba(255, 215, 0, 0.3);
  border-radius: var(--radius-md);
  background: transparent;
  color: #fff;
  cursor: pointer;
}

.lang-short { display: none; }

.nav-panel {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  flex: 1;
  justify-content: flex-end;
  margin-right: 1rem;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 0.25rem;
  margin: 0;
  padding: 0;
}

.nav-links a {
  color: #fff;
  text-decoration: none;
  font-weight: 500;
  padding: 0.4rem 0.75rem;
  border-radius: var(--radius-md);
  position: relative;
}

.nav-links a::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 0.15rem;
  width: 0;
  height: 2px;
  background: var(--gold-gradient);
  transform: translateX(-50%);
  transition: width var(--transition-normal);
}

.nav-links a:hover,
.nav-links a:focus-visible {
  color: var(--primary-gold);
  background: rgba(255, 215, 0, 0.08);
}

.nav-links a:hover::after,
.nav-links a:focus-visible::after {
  width: 55%;
}

.language-switcher {
  display: flex;
  gap: 0.5rem;
}

.lang-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.4rem 0.85rem;
  background: transparent;
  border: 1px solid rgba(255, 215, 0, 0.3);
  border-radius: var(--radius-md);
  color: #fff;
  cursor: pointer;
  font: inherit;
  font-size: 0.9rem;
}

.lang-btn.active,
.lang-btn:hover {
  background: rgba(255, 215, 0, 0.1);
  border-color: #fff;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.95rem 1.75rem;
  border-radius: var(--radius-lg);
  font-family: inherit;
  font-weight: 600;
  font-size: 1rem;
  text-decoration: none;
  cursor: pointer;
  border: 2px solid #fff;
  background: transparent;
  color: #fff;
  transition: transform var(--transition-normal), background var(--transition-normal), color var(--transition-normal), box-shadow var(--transition-normal);
}

.btn:hover,
.btn:focus-visible {
  background: var(--primary-gold);
  color: var(--primary-black);
  transform: translateY(-2px);
  box-shadow: 0 0 25px rgba(255, 215, 0, 0.55);
}

.btn-ghost {
  padding: 0.65rem 1.1rem;
  font-size: 0.92rem;
}

.hero {
  padding: var(--space-3xl) 0 var(--space-2xl);
  text-align: center;
}

.hero-kicker {
  display: inline-block;
  margin-bottom: var(--space-md);
  padding: 0.35rem 0.9rem;
  border: 1px solid rgba(255, 215, 0, 0.35);
  border-radius: 999px;
  color: var(--primary-gold);
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero p {
  max-width: 42rem;
  margin-inline: auto;
  color: var(--text-muted);
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
  margin: var(--space-lg) 0 var(--space-xl);
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-lg);
  max-width: 44rem;
  margin: 0 auto;
}

.stat-number {
  font-size: clamp(1.8rem, 4vw, 2.4rem);
  font-weight: 700;
  background: var(--gold-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.stat-label {
  color: var(--text-muted);
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.section {
  padding: var(--space-2xl) 0;
}

.section-header {
  text-align: center;
  max-width: 40rem;
  margin: 0 auto var(--space-xl);
}

.section-header p {
  color: var(--text-muted);
}

.builder-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  gap: var(--space-lg);
  align-items: start;
}

.plan-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.plan-card,
.option-card,
.estimate-panel,
.policy-item,
.compare-wrap,
.include-card,
.contact-form,
.note-card {
  background: rgba(26, 26, 26, 0.8);
  border: 1px solid rgba(255, 215, 0, 0.32);
  border-radius: var(--radius-xl);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.plan-card {
  padding: 1.25rem;
  text-align: left;
  color: inherit;
  cursor: pointer;
  width: 100%;
  font: inherit;
  transition: transform var(--transition-normal), border-color var(--transition-normal), box-shadow var(--transition-normal);
}

.plan-card:hover,
.plan-card:focus-visible {
  transform: translateY(-4px);
  border-color: #fff;
  box-shadow: var(--shadow-glow);
}

.plan-card[aria-pressed="true"] {
  border-color: var(--primary-gold);
  box-shadow: var(--shadow-glow);
  background: rgba(255, 215, 0, 0.06);
}

.plan-tag {
  display: inline-block;
  margin-bottom: 0.6rem;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--primary-gold);
}

.plan-card h3 {
  margin-bottom: 0.35rem;
}

.plan-price {
  font-family: var(--font-mono);
  font-size: 1.15rem;
  color: var(--primary-gold);
  margin: 0.4rem 0;
}

.plan-recurring {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
}

.plan-card p {
  font-size: 0.92rem;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
}

.plan-card ul {
  margin: 0;
  padding-left: 1.1rem;
  color: var(--text-muted);
  font-size: 0.88rem;
}

.plan-card li + li { margin-top: 0.25rem; }

.options-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  margin: var(--space-xl) 0 var(--space-md);
}

.options-head h3 { margin: 0; }

.option-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.85rem;
}

.option-card {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 0.75rem;
  align-items: start;
  padding: 1rem;
  cursor: pointer;
}

.option-card:not(label) {
  cursor: default;
}

.option-card.disabled {
  opacity: 0.45;
}

.option-check,
.qty-wrap {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.option-card input[type="checkbox"] {
  width: 1.15rem;
  height: 1.15rem;
  accent-color: var(--primary-gold);
}

.option-copy h4 {
  margin: 0 0 0.25rem;
  font-size: 0.98rem;
  color: #fff;
}

.option-copy p {
  margin: 0;
  font-size: 0.82rem;
  color: var(--text-muted);
}

.option-price {
  font-family: var(--font-mono);
  font-size: 0.88rem;
  color: var(--primary-gold);
  white-space: nowrap;
}

.qty-btn {
  width: 1.85rem;
  height: 1.85rem;
  border: 1px solid rgba(255, 215, 0, 0.35);
  border-radius: 0.4rem;
  background: transparent;
  color: #fff;
  cursor: pointer;
}

.qty-btn:hover { border-color: #fff; }

.qty-value {
  min-width: 1.4rem;
  text-align: center;
  font-family: var(--font-mono);
}

.estimate-panel {
  position: sticky;
  top: calc(var(--nav-h) + 1rem);
  padding: 1.35rem;
}

.estimate-panel h3 {
  margin-bottom: 0.25rem;
}

.estimate-empty {
  color: var(--text-muted);
  font-size: 0.95rem;
}

.estimate-lines {
  list-style: none;
  margin: 0 0 1rem;
  padding: 0;
  font-size: 0.9rem;
}

.estimate-lines li {
  display: flex;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.4rem 0;
  border-bottom: 1px solid rgba(255, 215, 0, 0.12);
  color: var(--text-muted);
}

.estimate-lines .amt {
  font-family: var(--font-mono);
  color: #fff;
}

.estimate-totals {
  display: grid;
  gap: 0.55rem;
  margin-bottom: 1rem;
}

.total-row {
  display: flex;
  justify-content: space-between;
  gap: 0.75rem;
  align-items: baseline;
}

.total-row span:last-child {
  font-family: var(--font-mono);
  color: var(--primary-gold);
}

.total-row.primary {
  padding-top: 0.5rem;
  border-top: 1px solid rgba(255, 215, 0, 0.25);
  font-size: 1.05rem;
  font-weight: 700;
}

.estimate-note {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.estimate-actions {
  display: grid;
  gap: 0.6rem;
}

.compare-wrap {
  overflow-x: auto;
  padding: 0.5rem;
}

.compare-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
}

.compare-table th,
.compare-table td {
  padding: 0.85rem 0.75rem;
  text-align: left;
  border-bottom: 1px solid rgba(255, 215, 0, 0.12);
  vertical-align: top;
}

.compare-table th {
  color: var(--primary-gold);
  font-weight: 600;
}

.compare-table td { color: var(--text-muted); }

.compare-table tr.is-selected td {
  background: rgba(255, 215, 0, 0.06);
  color: #fff;
}

.include-grid,
.maint-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.include-card,
.note-card {
  padding: 1.25rem;
}

.include-card h3,
.note-card h3 {
  margin-bottom: 0.5rem;
}

.include-card ul,
.note-card ul {
  margin: 0;
  padding-left: 1.1rem;
  color: var(--text-muted);
  font-size: 0.92rem;
}

.price-chip {
  font-family: var(--font-mono);
  color: var(--primary-gold);
  font-size: 1rem;
  margin-bottom: 0.5rem;
}

.policies {
  display: grid;
  gap: 0.65rem;
}

.policy-item summary {
  cursor: pointer;
  list-style: none;
  padding: 1rem 1.15rem;
  font-weight: 600;
}

.policy-item summary::-webkit-details-marker { display: none; }

.policy-item summary::after {
  content: "+";
  float: right;
  color: var(--primary-gold);
}

.policy-item[open] summary::after { content: "–"; }

.policy-item .policy-body {
  padding: 0 1.15rem 1.15rem;
  color: var(--text-muted);
  font-size: 0.95rem;
}

.contact-form {
  max-width: 640px;
  margin: 0 auto;
  padding: var(--space-xl);
  display: grid;
  gap: var(--space-md);
}

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

.form-group label {
  display: block;
  margin-bottom: 0.4rem;
  font-weight: 500;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.9rem 1rem;
  background: rgba(10, 10, 10, 0.8);
  border: 1px solid rgba(255, 215, 0, 0.3);
  border-radius: var(--radius-lg);
  color: #fff;
  font: inherit;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: #fff;
  box-shadow: 0 0 0 3px rgba(255, 215, 0, 0.12);
}

.form-status {
  min-height: 1.4rem;
  font-size: 0.9rem;
  color: var(--primary-gold);
}

.footer {
  background: var(--secondary-black);
  border-top: 1px solid rgba(255, 215, 0, 0.2);
  padding: var(--space-2xl) 0;
  margin-top: var(--space-3xl);
  text-align: center;
}

.footer-logo {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 1.25rem;
  font-weight: 700;
  background: var(--gold-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 0.75rem;
}

.footer-logo img {
  width: 28px;
  height: 28px;
}

.footer p { color: var(--text-muted); font-size: 0.95rem; }

.footer a { color: #fff; text-decoration: none; }
.footer a:hover { color: var(--primary-gold); }

.footer-legal {
  margin-top: var(--space-lg);
  padding-top: var(--space-md);
  border-top: 1px solid rgba(255, 215, 0, 0.15);
}

.footer-legal h3 {
  font-size: 0.85rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--primary-gold);
  background: none;
  -webkit-text-fill-color: unset;
}

.footer-legal ul {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.5rem 1.25rem;
  margin: 0;
  padding: 0;
}

.footer-legal a { font-size: 0.85rem; color: rgba(255, 255, 255, 0.85); }

.mobile-estimate {
  display: none;
}

@media (max-width: 1024px) {
  .nav-toggle { display: inline-flex; align-items: center; justify-content: center; }
  .lang-long { display: none; }
  .lang-short { display: inline; }
  .nav-panel {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(10, 10, 10, 0.97);
    border-bottom: 1px solid rgba(255, 215, 0, 0.15);
    padding: 1rem 1.25rem 1.25rem;
    flex-direction: column;
    align-items: stretch;
    gap: 1rem;
    flex: none;
    margin-right: 0;
    justify-content: flex-start;
  }
  .nav-panel.open { display: flex; }
  .nav-links { flex-direction: column; }
  .builder-layout { grid-template-columns: 1fr; }
  .estimate-panel {
    position: static;
  }
  .mobile-estimate {
    display: block;
    position: sticky;
    bottom: 0;
    z-index: 90;
    margin: 1rem -1rem 0;
    padding: 0.85rem 1rem 1rem;
    background: rgba(10, 10, 10, 0.96);
    border-top: 1px solid rgba(255, 215, 0, 0.25);
    backdrop-filter: blur(16px);
  }
  .mobile-estimate .row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
  }
  .mobile-estimate strong {
    font-family: var(--font-mono);
    color: var(--primary-gold);
    font-size: 1.05rem;
  }
}

@media (max-width: 768px) {
  .plan-grid,
  .option-grid,
  .include-grid,
  .maint-grid,
  .hero-stats,
  .form-row {
    grid-template-columns: 1fr;
  }
  .hero { padding-top: var(--space-xl); }
  .options-head { flex-direction: column; }
  body[lang="ja"] {
    word-break: normal;
    overflow-wrap: anywhere;
  }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation: none !important;
    transition: none !important;
  }
}