/* ========================================
   NullPo Works - Style Sheet
   ======================================== */

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

:root {
  --bg-primary: #0a0a0f;
  --bg-secondary: #12121c;
  --bg-card: #16162a;
  --bg-card-hover: #1c1c38;
  --text-primary: #e8e8f0;
  --text-secondary: #9898b0;
  --accent: #7b5cff;
  --accent-glow: #9d7fff;
  --accent-dark: #5a3dcc;
  --neon-blue: #00d4ff;
  --neon-purple: #b14cff;
  --badge-coming: #ff6b3d;
  --radius: 12px;
  --radius-sm: 8px;
  --transition: 0.3s ease;
  --header-height: 64px;
}

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

body {
  font-family: 'Noto Sans JP', sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
}

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

a {
  color: var(--accent-glow);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover {
  color: var(--neon-blue);
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ---------- Header ---------- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  background: rgba(10, 10, 15, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  z-index: 1000;
  border-bottom: 1px solid rgba(123, 92, 255, 0.1);
}

.header-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 20px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.header-logo img {
  height: 32px;
  width: auto;
}

.nav-list {
  display: flex;
  gap: 32px;
  list-style: none;
}

.nav-link {
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  transition: color var(--transition);
}

.nav-link:hover {
  color: var(--text-primary);
}

/* Language toggle */
.lang-toggle {
  background: rgba(123, 92, 255, 0.15);
  border: 1px solid rgba(123, 92, 255, 0.3);
  color: var(--accent-glow);
  font-family: 'Orbitron', sans-serif;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  padding: 4px 12px;
  border-radius: 4px;
  cursor: pointer;
  transition: background var(--transition), border-color var(--transition);
  flex-shrink: 0;
}

.lang-toggle:hover {
  background: rgba(123, 92, 255, 0.3);
  border-color: var(--accent);
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  z-index: 1100;
}

.hamburger-line {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

.hamburger.is-active .hamburger-line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.hamburger.is-active .hamburger-line:nth-child(2) {
  opacity: 0;
}

.hamburger.is-active .hamburger-line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  height: 100vh;
  min-height: 600px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

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

.hero-bg canvas {
  width: 100%;
  height: 100%;
  display: block;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, rgba(123, 92, 255, 0.08) 0%, transparent 70%);
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
}

.hero-logo {
  width: 320px;
  height: auto;
  margin: 0 auto 24px;
  filter: drop-shadow(0 0 40px rgba(123, 92, 255, 0.4));
}

.hero-tagline {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text-secondary);
  letter-spacing: 0.3em;
}

.hero-scroll {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
}

.hero-scroll-arrow {
  display: block;
  width: 24px;
  height: 24px;
  border-right: 2px solid var(--text-secondary);
  border-bottom: 2px solid var(--text-secondary);
  transform: rotate(45deg);
  animation: scrollBounce 2s infinite;
}

@keyframes scrollBounce {
  0%, 100% { transform: rotate(45deg) translate(0, 0); opacity: 0.5; }
  50% { transform: rotate(45deg) translate(4px, 4px); opacity: 1; }
}

/* ---------- Section ---------- */
.section {
  padding: 100px 0;
}

.section-title {
  font-family: 'Orbitron', sans-serif;
  font-size: 2rem;
  font-weight: 900;
  text-align: center;
  margin-bottom: 60px;
  letter-spacing: 0.08em;
  background: linear-gradient(135deg, var(--accent-glow), var(--neon-blue));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* ---------- Game Cards ---------- */
.game-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
}

.game-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid rgba(123, 92, 255, 0.1);
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.game-card:hover {
  transform: translateY(-4px);
  border-color: rgba(123, 92, 255, 0.3);
  box-shadow: 0 16px 48px rgba(123, 92, 255, 0.1);
}

.game-card-image {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background: linear-gradient(135deg, var(--bg-secondary), var(--bg-card));
}

.game-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.game-card:hover .game-card-image img {
  transform: scale(1.03);
}

/* Portrait card (魂の共鳴 etc.) */
.game-card--portrait .game-card-portrait-layout {
  display: flex;
  flex-direction: row;
  min-height: 0;
}

.game-card-image--portrait {
  position: relative;
  overflow: hidden;
  aspect-ratio: auto;
  width: 240px;
  min-width: 240px;
  flex-shrink: 0;
  background: linear-gradient(135deg, var(--bg-secondary), var(--bg-card));
}

.game-card-image--portrait img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  transition: transform 0.5s ease;
}

.game-card--portrait:hover .game-card-image--portrait img {
  transform: scale(1.03);
}

.game-card--portrait .game-card-body {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

@media (max-width: 479px) {
  .game-card--portrait .game-card-portrait-layout {
    flex-direction: column;
  }

  .game-card-image--portrait {
    width: 100%;
    min-width: 0;
    aspect-ratio: auto;
  }
}

.game-card-body {
  padding: 28px;
}

.game-card-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 16px;
}

.game-icon {
  width: 56px;
  height: 56px;
  border-radius: 12px;
  flex-shrink: 0;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.game-card-header .game-title {
  margin-bottom: 4px;
}

.game-card-header .game-tags {
  margin-bottom: 0;
}

.game-title {
  font-size: 1.3rem;
  font-weight: 900;
  margin-bottom: 12px;
}

.game-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}

.game-tag {
  font-size: 0.75rem;
  padding: 3px 10px;
  border-radius: 20px;
  background: rgba(123, 92, 255, 0.15);
  color: var(--accent-glow);
  font-weight: 700;
}

.game-tag--lang {
  background: rgba(0, 212, 255, 0.12);
  color: var(--neon-blue);
}

.game-tag--lang::before {
  content: '';
  display: inline-block;
  width: 12px;
  height: 12px;
  margin-right: 4px;
  vertical-align: -1px;
  background: currentColor;
  -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M12 2C6.48 2 2 6.48 2 12s4.48 10 10 10 10-4.48 10-10S17.52 2 12 2zm-1 17.93c-3.95-.49-7-3.85-7-7.93 0-.62.08-1.21.21-1.79L9 15v1c0 1.1.9 2 2 2v1.93zm6.9-2.54c-.26-.81-1-1.39-1.9-1.39h-1v-3c0-.55-.45-1-1-1H8v-2h2c.55 0 1-.45 1-1V7h2c1.1 0 2-.9 2-2v-.41c2.93 1.19 5 4.06 5 7.41 0 2.08-.8 3.97-2.1 5.39z'/%3E%3C/svg%3E");
  mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M12 2C6.48 2 2 6.48 2 12s4.48 10 10 10 10-4.48 10-10S17.52 2 12 2zm-1 17.93c-3.95-.49-7-3.85-7-7.93 0-.62.08-1.21.21-1.79L9 15v1c0 1.1.9 2 2 2v1.93zm6.9-2.54c-.26-.81-1-1.39-1.9-1.39h-1v-3c0-.55-.45-1-1-1H8v-2h2c.55 0 1-.45 1-1V7h2c1.1 0 2-.9 2-2v-.41c2.93 1.19 5 4.06 5 7.41 0 2.08-.8 3.97-2.1 5.39z'/%3E%3C/svg%3E");
  -webkit-mask-size: contain;
  mask-size: contain;
}

.game-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 20px;
}

.game-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 700;
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--neon-purple));
  color: #fff;
}

.btn-primary:hover {
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(123, 92, 255, 0.3);
}

.btn-store {
  background: rgba(1, 135, 95, 0.15);
  color: #34d399;
  border: 1px solid rgba(52, 211, 153, 0.4);
}

.btn-store:hover {
  background: rgba(1, 135, 95, 0.3);
  color: #6ee7b7;
  border-color: rgba(52, 211, 153, 0.6);
  transform: translateY(-2px);
}

.btn-disabled {
  opacity: 0.5;
  pointer-events: none;
}

.btn-coming-soon {
  display: inline-block;
  background: var(--bg-secondary);
  color: var(--text-secondary);
  border: 1px dashed rgba(123, 92, 255, 0.4);
  padding: 12px 28px;
  border-radius: 8px;
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.05em;
  pointer-events: none;
}

.btn-icon {
  flex-shrink: 0;
}

/* ---------- About ---------- */
.about {
  background: var(--bg-secondary);
}

.about-content {
  max-width: 680px;
  margin: 0 auto;
  text-align: center;
}

.about-content p {
  color: var(--text-secondary);
  font-size: 1rem;
  line-height: 2;
  margin-bottom: 16px;
}

.about-content p:last-child {
  margin-bottom: 0;
}

/* ---------- Footer ---------- */
.footer {
  padding: 40px 0;
  border-top: 1px solid rgba(123, 92, 255, 0.1);
}

.footer .container {
  text-align: center;
}

.footer-links {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 24px;
  margin-bottom: 20px;
}

.footer-link {
  color: var(--text-secondary);
  font-size: 0.85rem;
  font-weight: 700;
}

.footer-link:hover {
  color: var(--text-primary);
}

.footer-copy {
  color: var(--text-secondary);
  font-size: 0.8rem;
}

/* ---------- Subpage Title ---------- */
.section-title--sub {
  text-align: left;
  background: none;
  -webkit-text-fill-color: var(--text-primary);
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 1.8rem;
  margin-bottom: 40px;
}

/* ---------- Privacy Policy ---------- */
.privacy-body h2 {
  font-size: 1.2rem;
  font-weight: 900;
  margin-bottom: 12px;
  color: var(--text-primary);
}

.privacy-body h3 {
  font-size: 1rem;
  font-weight: 700;
  margin: 16px 0 8px;
  color: var(--text-primary);
}

.pp-section {
  margin-bottom: 36px;
}

.pp-section p,
.pp-section li {
  color: var(--text-secondary);
  font-size: 0.92rem;
  line-height: 1.9;
}

.pp-section ul {
  padding-left: 20px;
  margin: 8px 0 16px;
}

.pp-section li {
  margin-bottom: 4px;
}

.pp-date {
  color: var(--text-secondary);
  font-size: 0.85rem;
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid rgba(123, 92, 255, 0.1);
}

/* ---------- Contact ---------- */
.contact-body {
  max-width: 640px;
}

.contact-lead {
  color: var(--text-secondary);
  font-size: 1rem;
  line-height: 1.9;
  margin-bottom: 40px;
}

/* Contact Form */
.contact-form {
  margin-bottom: 40px;
}

.form-group {
  margin-bottom: 20px;
}

.form-label {
  display: block;
  font-size: 0.9rem;
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--text-primary);
}

.form-required {
  color: var(--badge-coming);
}

.form-optional {
  color: var(--text-secondary);
  font-weight: 400;
  font-size: 0.8rem;
}

.form-input {
  width: 100%;
  padding: 12px 16px;
  background: var(--bg-card);
  border: 1px solid rgba(123, 92, 255, 0.15);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.95rem;
  line-height: 1.6;
  transition: border-color var(--transition), box-shadow var(--transition);
  -webkit-appearance: none;
  appearance: none;
}

.form-input::placeholder {
  color: var(--text-secondary);
  opacity: 0.5;
}

.form-input:focus {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(123, 92, 255, 0.3);
}

.form-select {
  cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%239898b0' stroke-width='1.5' fill='none'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  padding-right: 40px;
}

.form-textarea {
  resize: vertical;
  min-height: 120px;
}

.form-char-count {
  text-align: right;
  font-size: 0.75rem;
  color: var(--text-secondary);
  margin-top: 4px;
  opacity: 0.7;
}

.form-note {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-top: 4px;
  margin-bottom: 8px;
}
.form-note a {
  color: var(--accent-glow);
  text-decoration: underline;
}

.contact-submit-btn {
  font-size: 1rem;
  padding: 14px 40px;
  width: 100%;
  justify-content: center;
}

.contact-submit-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.contact-status {
  margin-top: 16px;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  line-height: 1.6;
}

.contact-status--success {
  background: rgba(34, 197, 94, 0.1);
  color: #22c55e;
  border: 1px solid rgba(34, 197, 94, 0.2);
}

.contact-status--error {
  background: rgba(239, 68, 68, 0.1);
  color: #ef4444;
  border: 1px solid rgba(239, 68, 68, 0.2);
}

.contact-faq {
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid rgba(123, 92, 255, 0.1);
}

.contact-faq-title {
  font-size: 1.1rem;
  margin-bottom: 16px;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-sm);
  margin-bottom: 8px;
}

.faq-question {
  padding: 14px 18px;
  cursor: pointer;
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--text-primary);
  list-style: none;
}

.faq-question::before {
  content: 'Q. ';
  color: var(--accent);
}

.faq-question::-webkit-details-marker {
  display: none;
}

.faq-answer {
  padding: 0 18px 16px;
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.9;
}

.faq-answer ol {
  margin: 8px 0 8px 1.4em;
}

.faq-answer ul {
  margin: 4px 0 4px 1.2em;
  list-style: disc;
}

.faq-answer li {
  margin-bottom: 4px;
}

.about-help-link {
  margin-top: 20px;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.about-help-link a {
  color: var(--accent);
  text-decoration: underline;
}

.contact-alt {
  margin-top: 40px;
  padding-top: 32px;
  border-top: 1px solid rgba(123, 92, 255, 0.1);
}

.contact-alt p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 16px;
}

.contact-x-btn {
  border: 1px solid rgba(255, 255, 255, 0.1);
}

@media (min-width: 480px) {
  .contact-submit-btn {
    width: auto;
  }
}

/* ========================================
   Responsive
   ======================================== */

/* Tablet */
@media (min-width: 768px) {
  .game-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .game-card--portrait {
    grid-column: 1 / -1;
  }

  .section-title {
    font-size: 2.4rem;
  }
}

/* Desktop */
@media (min-width: 1024px) {
  .game-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .game-card--portrait {
    grid-column: 1 / -1;
  }

  .hero-logo {
    width: 400px;
  }

  .hero-tagline {
    font-size: 1.6rem;
  }
}

/* Mobile nav */
@media (max-width: 767px) {
  .hamburger {
    display: flex;
  }

  .lang-toggle {
    margin-left: auto;
    margin-right: 8px;
  }

  .nav {
    position: fixed;
    top: 0;
    right: 0;
    width: 260px;
    height: 100vh;
    background: rgba(12, 12, 20, 0.98);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    transform: translateX(100%);
    transition: transform var(--transition);
    z-index: 1050;
    padding: calc(var(--header-height) + 24px) 32px 32px;
    border-left: 1px solid rgba(123, 92, 255, 0.15);
  }

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

  .nav-list {
    flex-direction: column;
    gap: 24px;
  }

  .nav-link {
    font-size: 1rem;
  }

  .hero {
    height: 70vh;
    min-height: 400px;
    padding-top: var(--header-height);
  }

  .hero-content {
    margin-top: -24px;
  }

  .hero-logo {
    width: 240px;
  }

  .hero-tagline {
    font-size: 1.1rem;
    letter-spacing: 0.2em;
  }

  .hero-scroll {
    bottom: 24px;
  }

  .section {
    padding: 72px 0;
  }

  .section-title {
    font-size: 1.6rem;
    margin-bottom: 40px;
  }

  .game-card-body {
    padding: 20px;
  }

  .game-title {
    font-size: 1.1rem;
  }
}

/* ========================================
   Beta Test Page
   ======================================== */
.beta-container {
  max-width: 720px;
}

/* Hero */
/* Android Only Banner */
.beta-android-banner {
  background: linear-gradient(135deg, rgba(61, 220, 132, 0.15), rgba(61, 220, 132, 0.05));
  border: 2px solid rgba(61, 220, 132, 0.5);
  border-radius: var(--radius);
  padding: 20px 28px;
  margin-bottom: 32px;
  text-align: center;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

.beta-android-banner-icon {
  color: #3ddc84;
  flex-shrink: 0;
  line-height: 1;
}

.beta-android-banner-text {
  color: var(--text-primary);
  font-size: 1.1rem;
  line-height: 1.8;
}

.beta-android-banner-text strong {
  color: #3ddc84;
  font-size: 1.25rem;
}

.beta-android-banner-link {
  color: var(--accent);
  text-decoration: underline;
  font-weight: 600;
}

.beta-android-banner-link:hover {
  color: var(--accent-light, #a78bfa);
}

.beta-hero {
  text-align: center;
  margin-bottom: 48px;
}

.beta-hero-icon {
  width: 96px;
  height: 96px;
  border-radius: 20px;
  margin-bottom: 24px;
  box-shadow: 0 8px 32px rgba(123, 92, 255, 0.3);
}

.beta-hero-title {
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 1.6rem;
  font-weight: 900;
  line-height: 1.6;
  color: var(--text-primary);
  margin-bottom: 16px;
}

.beta-hero-sub {
  color: var(--text-secondary);
  font-size: 1rem;
  line-height: 1.9;
}

.beta-hero-note {
  margin-top: 12px;
  color: var(--accent);
  font-size: 0.95rem;
  font-weight: 600;
}

/* Sections */
.beta-section {
  margin-bottom: 40px;
}

.beta-section-title {
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 1.3rem;
  font-weight: 900;
  color: var(--text-primary);
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 2px solid rgba(123, 92, 255, 0.2);
}

/* Alert */
.beta-alert {
  background: var(--bg-card);
  border: 2px solid rgba(255, 180, 50, 0.4);
  border-radius: var(--radius);
  padding: 28px;
}

.beta-alert-icon {
  font-size: 2.4rem;
  text-align: center;
  margin-bottom: 12px;
}

.beta-alert .beta-section-title {
  text-align: center;
  border-bottom: none;
  padding-bottom: 0;
  margin-bottom: 16px;
}

.beta-alert-main {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  text-align: center;
  margin-bottom: 12px;
  line-height: 1.8;
}

.beta-alert-desc {
  color: var(--text-secondary);
  font-size: 0.95rem;
  text-align: center;
  margin-bottom: 20px;
  line-height: 1.8;
}

.beta-alert-check {
  background: rgba(123, 92, 255, 0.08);
  border-radius: var(--radius-sm);
  padding: 16px 20px;
}

.beta-alert-check p {
  color: var(--text-secondary);
  font-size: 0.92rem;
  line-height: 2;
}

/* Steps */
.beta-steps {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.beta-step {
  display: flex;
  gap: 20px;
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 24px;
  border: 1px solid rgba(123, 92, 255, 0.1);
}

.beta-step-number {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--accent), var(--neon-purple));
  color: #fff;
  font-family: 'Orbitron', sans-serif;
  font-size: 1.4rem;
  font-weight: 900;
  border-radius: 50%;
}

.beta-step-title {
  font-size: 1.05rem;
  font-weight: 900;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.beta-step-content p {
  color: var(--text-secondary);
  font-size: 0.92rem;
  line-height: 1.8;
}

.beta-step-note {
  margin-top: 8px;
  font-size: 0.85rem !important;
  opacity: 0.7;
}

.beta-steps-intro {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.8;
  margin-bottom: 24px;
}

/* Step screenshot */
.beta-step-image {
  position: relative;
  margin: 16px 0;
  max-width: 320px;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid rgba(123, 92, 255, 0.15);
}

.beta-step-image img {
  display: block;
  width: 100%;
  height: auto;
}

.beta-step-image-indicator {
  position: absolute;
  border: 3px solid #ff4444;
  border-radius: 8px;
  pointer-events: none;
  box-shadow: 0 0 12px rgba(255, 68, 68, 0.5);
  animation: beta-pulse 2s ease-in-out infinite;
}

@keyframes beta-pulse {
  0%, 100% { box-shadow: 0 0 12px rgba(255, 68, 68, 0.5); }
  50% { box-shadow: 0 0 24px rgba(255, 68, 68, 0.8); }
}

/* CTA lead text */
.beta-cta-lead {
  color: var(--text-secondary);
  font-size: 1rem;
  margin-bottom: 24px;
}

/* CTA */
.beta-cta {
  text-align: center;
  padding: 40px 0;
}

.beta-cta-btn {
  font-size: 1.15rem;
  padding: 18px 40px;
  display: inline-flex;
  align-items: center;
  gap: 12px;
  box-shadow: 0 8px 32px rgba(123, 92, 255, 0.4);
}

.beta-cta-btn:hover {
  box-shadow: 0 12px 40px rgba(123, 92, 255, 0.6);
}

.beta-cta-note {
  color: var(--text-secondary);
  font-size: 0.85rem;
  margin-top: 16px;
  opacity: 0.7;
}

/* Support */
.beta-support p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.8;
  margin-bottom: 20px;
}

/* Notice */
.beta-notice {
  background: var(--bg-secondary);
  border-radius: var(--radius);
  padding: 20px 24px;
  border: 1px solid rgba(123, 92, 255, 0.1);
}

.beta-notice p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 2;
}

/* Beta page mobile */
@media (max-width: 767px) {
  .beta-hero-title {
    font-size: 1.3rem;
  }

  .beta-step {
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 12px;
    padding: 20px;
  }

  .beta-step-image {
    max-width: 280px;
    margin-left: auto;
    margin-right: auto;
  }

  .beta-cta-btn {
    font-size: 1rem;
    padding: 16px 28px;
  }
}

/* ========================================
   Beta Page - Forms & Lists
   ======================================== */

.beta-section-desc {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.8;
  margin-bottom: 24px;
}

.beta-form {
  margin-bottom: 32px;
}

.beta-form .form-group {
  margin-bottom: 16px;
}

.beta-form-submit {
  padding: 12px 32px;
}

/* Placeholder */
.beta-placeholder {
  background: var(--bg-card);
  border: 1px dashed rgba(123, 92, 255, 0.3);
  border-radius: var(--radius);
  padding: 40px 24px;
  text-align: center;
}

.beta-placeholder p {
  color: var(--text-secondary);
  font-size: 1rem;
}

/* Lists */
.beta-list-section {
  margin-top: 24px;
}

.beta-list-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(123, 92, 255, 0.15);
}

.beta-list-loading,
.beta-list-empty {
  color: var(--text-secondary);
  font-size: 0.9rem;
  padding: 16px 0;
}

/* Registration list */
.beta-reg-list {
  list-style: none;
}

.beta-reg-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 16px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

.beta-reg-item:last-child {
  border-bottom: none;
}

.beta-reg-name {
  color: var(--text-primary);
  font-size: 0.92rem;
  font-weight: 700;
}

.beta-reg-date {
  color: var(--text-secondary);
  font-size: 0.8rem;
}

/* Chat list */
.beta-chat-list {
  max-height: 600px;
  overflow-y: auto;
}

.beta-chat-msg {
  padding: 16px;
  background: var(--bg-card);
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
  border: 1px solid rgba(123, 92, 255, 0.08);
}

.beta-chat-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
}

.beta-chat-name {
  color: var(--accent-glow);
  font-size: 0.85rem;
  font-weight: 700;
}

.beta-chat-date {
  color: var(--text-secondary);
  font-size: 0.78rem;
}

.beta-chat-text {
  color: var(--text-primary);
  font-size: 0.92rem;
  line-height: 1.7;
  word-break: break-word;
}

.beta-chat-image {
  margin-top: 10px;
}

.beta-chat-image img {
  max-width: 100%;
  max-height: 400px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: opacity 0.2s;
}

.beta-chat-image img:hover {
  opacity: 0.85;
}

/* 画像添付UI */
.chat-image-upload {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.chat-image-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.88rem;
  padding: 8px 16px;
  width: fit-content;
}

.chat-image-preview {
  position: relative;
  display: inline-block;
}

.chat-image-preview-img {
  max-width: 200px;
  max-height: 150px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(123, 92, 255, 0.2);
}

/* 登録後の流れ */
.beta-reg-flow {
  margin-top: 16px;
  margin-bottom: 20px;
}

.beta-reg-flow-steps {
  margin: 12px 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.beta-reg-flow-steps p {
  font-size: 0.92rem;
}

.chat-image-remove {
  position: absolute;
  top: -8px;
  right: -8px;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  border: none;
  font-size: 16px;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}

.beta-privacy-note {
  margin-top: 16px;
  padding: 12px 16px;
  background: rgba(123, 92, 255, 0.05);
  border: 1px solid rgba(123, 92, 255, 0.15);
  border-radius: var(--radius-sm);
  font-size: 0.78rem;
  color: var(--text-secondary);
  line-height: 1.7;
  text-align: center;
}

.beta-privacy-note a {
  color: var(--accent);
  text-decoration: underline;
}

.beta-privacy-detail {
  font-size: 0.78rem;
  color: var(--text-secondary);
  line-height: 1.9;
}

.beta-privacy-detail h3 {
  font-size: 0.82rem;
  color: var(--text-primary);
  margin-top: 20px;
  margin-bottom: 4px;
  font-weight: 700;
}

.beta-privacy-detail ul {
  margin: 4px 0 8px 1.4em;
  list-style: disc;
}

.beta-privacy-detail li {
  margin-bottom: 2px;
}

.beta-privacy-detail a {
  color: var(--accent);
  text-decoration: underline;
}

.beta-privacy-detail p {
  margin-bottom: 6px;
}

.beta-privacy-update {
  margin-top: 24px;
  padding-top: 12px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 0.75rem;
  color: var(--text-secondary);
  opacity: 0.7;
}

/* ---------- PWA Install Guide ---------- */
.pwa-guide {
  background: var(--bg-secondary);
}

.pwa-guide-lead {
  text-align: center;
  color: var(--text-secondary);
  font-size: 1rem;
  line-height: 2;
  margin-bottom: 12px;
}

.pwa-guide-sub {
  text-align: center;
  color: var(--text-secondary);
  font-size: 0.85rem;
  opacity: 0.7;
  margin-bottom: 48px;
}

.pwa-guide-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

.pwa-guide-card {
  background: var(--bg-card);
  border: 1px solid rgba(123, 92, 255, 0.1);
  border-radius: var(--radius);
  padding: 28px;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.pwa-guide-card:hover {
  border-color: rgba(123, 92, 255, 0.3);
  box-shadow: 0 8px 32px rgba(123, 92, 255, 0.08);
}

.pwa-guide-card-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
}

.pwa-guide-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--accent), var(--neon-purple));
  color: #fff;
  flex-shrink: 0;
}

.pwa-guide-card-title {
  font-size: 1.15rem;
  font-weight: 900;
  color: var(--text-primary);
}

.pwa-guide-steps {
  list-style: none;
  counter-reset: pwa-step;
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 16px;
}

.pwa-guide-steps li {
  counter-increment: pwa-step;
  position: relative;
  padding-left: 36px;
  color: var(--text-secondary);
  font-size: 0.92rem;
  line-height: 1.8;
}

.pwa-guide-steps li::before {
  content: counter(pwa-step);
  position: absolute;
  left: 0;
  top: 2px;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(123, 92, 255, 0.15);
  color: var(--accent-glow);
  font-family: 'Orbitron', sans-serif;
  font-size: 0.75rem;
  font-weight: 700;
  border-radius: 50%;
}

.pwa-guide-note {
  font-size: 0.82rem;
  color: var(--text-secondary);
  opacity: 0.7;
  line-height: 1.7;
}

.pwa-guide-faq {
  text-align: center;
  margin-top: 40px;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.pwa-guide-faq a {
  color: var(--accent);
  text-decoration: underline;
}

@media (min-width: 768px) {
  .pwa-guide-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 767px) {
  .pwa-guide-lead br {
    display: none;
  }
}

/* ---------- Tester Recruitment Banner ---------- */
.tester-recruit {
  padding: 40px 0;
}

.tester-recruit-banner {
  background: linear-gradient(135deg, rgba(123, 92, 255, 0.12), rgba(0, 212, 255, 0.08));
  border: 1px solid rgba(123, 92, 255, 0.25);
  border-radius: var(--radius);
  padding: 40px 32px;
  text-align: center;
}

.tester-recruit-title {
  font-size: 1.3rem;
  margin-bottom: 12px;
}

.tester-recruit-desc {
  color: var(--text-secondary);
  font-size: 0.92rem;
  line-height: 1.8;
  margin-bottom: 20px;
}

.tester-recruit-btn {
  display: inline-block;
}

/* ---------- Tester Page: Nav ---------- */
.beta-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
  margin-bottom: 32px;
  padding: 16px;
  background: var(--bg-card);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius);
}

.beta-nav-link {
  padding: 8px 18px;
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--text-secondary);
  text-decoration: none;
  border: 1px solid rgba(123, 92, 255, 0.2);
  border-radius: 50px;
  transition: var(--transition);
}

.beta-nav-link:hover {
  color: var(--accent-glow);
  border-color: var(--accent);
  background: rgba(123, 92, 255, 0.1);
}

/* ---------- Tester Page: App sections ---------- */
.beta-app-section {
  border-top: 2px solid rgba(123, 92, 255, 0.2);
  padding-top: 32px;
}

.beta-app-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 24px;
}

.beta-app-icon {
  border-radius: 12px;
  flex-shrink: 0;
}

.beta-app-title {
  margin-bottom: 4px;
}

.beta-app-tag {
  font-size: 0.8rem;
  color: var(--text-secondary);
  background: rgba(123, 92, 255, 0.1);
  padding: 2px 10px;
  border-radius: 50px;
}

.beta-sub-heading {
  font-size: 1rem;
  margin-top: 32px;
  margin-bottom: 8px;
}

.beta-hero-logo {
  margin: 0 auto 12px;
  filter: drop-shadow(0 0 20px rgba(123, 92, 255, 0.3));
}

/* ========================================
   404 Error Page
   ======================================== */
.error-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding-top: var(--header-height);
}

.error-container {
  text-align: center;
  padding: 60px 20px;
}

.error-code {
  font-family: 'Orbitron', sans-serif;
  font-size: 8rem;
  font-weight: 900;
  line-height: 1;
  background: linear-gradient(135deg, var(--accent-glow), var(--neon-blue));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 16px;
  filter: drop-shadow(0 0 40px rgba(123, 92, 255, 0.3));
}

.error-title {
  font-size: 1.6rem;
  font-weight: 900;
  color: var(--text-primary);
  margin-bottom: 16px;
}

.error-desc {
  color: var(--text-secondary);
  font-size: 1rem;
  line-height: 1.8;
  margin-bottom: 40px;
}

.error-btn {
  font-size: 1rem;
  padding: 14px 36px;
}

@media (max-width: 767px) {
  .error-code {
    font-size: 5rem;
  }

  .error-title {
    font-size: 1.3rem;
  }
}