/* css/modern.css - NoLang Maintenance Page */
:root {
  --bg-color: #ffffff;
  --bg-secondary: #f8f9fa;
  --text-main: #212529;
  --text-muted: #868e96;
  --text-dark: #495057;
  --border-color: #e9ecef;
  --border-solid: #212529;

  --nolang-color: #56B48A;
  --nolang-hover: #49B590;

  /* NoLang Shadow Tokens */
  --shadow-base-sm: 3px;
  --shadow-hover-sm: 1.5px;
  --shadow-base-xl: 6px;
  --shadow-hover-xl: 3px;

  --font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Noto Sans JP", "Yu Gothic", "Meiryo", sans-serif;
}

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

body {
  font-family: var(--font-family);
  background-color: var(--bg-color);
  color: var(--text-main);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow-x: hidden;
}

.container {
  width: 100%;
  max-width: 800px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Header */
.header {
  position: sticky;
  top: 0;
  padding: 1rem 0;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 2px solid var(--border-color);
  z-index: 100;
}

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

.header__logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
}

.header__logo-img {
  width: 28px;
  height: 28px;
  border-radius: 6px;
}

.header__logo-text {
  font-weight: 800;
  font-size: 1.15rem;
  color: var(--text-main);
  letter-spacing: -0.02em;
}

/* Language Selector */
.lang-selector {
  position: relative;
}

.lang-selector__trigger {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-family);
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--text-dark);
  padding: 0.4rem 1rem;
  border-radius: 9999px;
  border: 2px solid var(--border-solid);
  background: var(--bg-color);
  cursor: pointer;
  box-shadow: var(--shadow-base-sm) var(--shadow-base-sm) 0 var(--border-solid);
  transition: transform 200ms ease, box-shadow 200ms ease;
}

.lang-selector__trigger:hover {
  background: var(--bg-secondary);
  color: var(--text-main);
  transform: translateY(calc(-1 * var(--shadow-base-sm)));
  box-shadow: var(--shadow-base-sm) var(--shadow-base-sm) 0 var(--border-solid);
}

.lang-selector__caret {
  font-size: 0.75rem;
  transition: transform 200ms ease;
}

.lang-selector__trigger[aria-expanded="true"] .lang-selector__caret {
  transform: rotate(180deg);
}

.lang-selector__menu {
  display: none;
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  min-width: 160px;
  background: var(--bg-color);
  border: 2px solid var(--border-solid);
  border-radius: 12px;
  padding: 0.5rem 0;
  list-style: none;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
  z-index: 200;
}

.lang-selector__menu--open {
  display: block;
}

.lang-selector__menu li a {
  display: block;
  padding: 0.5rem 1.25rem;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-dark);
  text-decoration: none;
  transition: background 150ms ease, color 150ms ease;
}

.lang-selector__menu li a:hover {
  background: var(--bg-secondary);
  color: var(--text-main);
}

.lang-selector__item--active a {
  color: var(--nolang-color) !important;
  font-weight: 700 !important;
}

/* Main */
.main {
  flex: 1;
  padding: 4rem 0 6rem;
  background: var(--bg-color);
}

/* Hero */
.hero {
  text-align: center;
  margin-bottom: 3rem;
  animation: fadeUp 0.8s ease-out forwards;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--text-main);
  background: var(--bg-color);
  border: 2px solid var(--border-solid);
  padding: 0.5rem 1.25rem;
  border-radius: 9999px;
  margin-bottom: 1.5rem;
  box-shadow: var(--shadow-base-sm) var(--shadow-base-sm) 0 var(--border-solid);
  transition: transform 200ms ease, box-shadow 200ms ease, border-color 200ms ease;
}

.hero__badge:hover {
  transform: translateY(calc(-1 * var(--shadow-base-sm)));
  box-shadow: var(--shadow-base-sm) var(--shadow-base-sm) 0 var(--border-solid);
}

.hero__title {
  font-size: 2.75rem;
  font-weight: 900;
  line-height: 1.3;
  letter-spacing: -0.02em;
  margin-bottom: 1.25rem;
  color: var(--text-main);
}

.hero__subtitle {
  font-size: 1.1rem;
  color: var(--text-dark);
  max-width: 560px;
  margin: 0 auto;
  line-height: 1.7;
  font-weight: 700;
}

/* Cards */
.card {
  background: var(--bg-color);
  border: 2px solid var(--border-solid);
  border-radius: 1.5rem;
  padding: 2.5rem;
  margin-bottom: 2rem;
  position: relative;
  transition: transform 200ms ease, box-shadow 200ms ease, border-color 200ms ease;
  box-shadow: var(--shadow-base-xl) var(--shadow-base-xl) 0 var(--border-solid);
  animation: fadeUp 0.8s ease-out 0.2s forwards;
  opacity: 0;
}

.card:hover {
  transform: translateY(calc(-1 * var(--shadow-base-xl)));
  box-shadow: var(--shadow-base-xl) var(--shadow-base-xl) 0 var(--border-solid);
}

.card__title {
  font-size: 1.35rem;
  font-weight: 900;
  margin-bottom: 1rem;
  color: var(--text-main);
}

.card__text {
  color: var(--text-dark);
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  line-height: 1.7;
}

.card__note {
  color: var(--text-muted);
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  line-height: 1.6;
}

.card__note a {
  color: var(--nolang-color);
  text-decoration: none;
  border-bottom: 1px solid rgba(86, 180, 138, 0.4);
}

.card__note a:hover {
  border-bottom-color: var(--nolang-color);
}

/* SNS Links */
.sns-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 0.5rem;
}

.sns-link {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 1rem;
  font-weight: 800;
  color: var(--text-main);
  text-decoration: none;
  padding: 0.75rem 1.5rem;
  border: 2px solid var(--border-solid);
  border-radius: 12px;
  background: var(--bg-color);
  box-shadow: var(--shadow-base-sm) var(--shadow-base-sm) 0 var(--border-solid);
  transition: transform 200ms ease, box-shadow 200ms ease;
}

.sns-link:hover {
  transform: translate(
    calc(var(--shadow-base-sm) - var(--shadow-hover-sm)),
    calc(var(--shadow-base-sm) - var(--shadow-hover-sm))
  );
  box-shadow: var(--shadow-hover-sm) var(--shadow-hover-sm) 0 var(--border-solid);
}

/* Footer */
.footer {
  padding: 3rem 0;
  border-top: 2px solid var(--border-color);
  background: var(--bg-color);
}

.footer__container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
}

.footer__links {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.footer__link {
  color: var(--text-dark);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 600;
  transition: color 0.2s ease;
}

.footer__link:hover {
  color: var(--nolang-color);
}

.footer__copyright {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
}

/* Animations */
@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

[dir="rtl"] .lang-selector__menu {
  right: auto;
  left: 0;
}

/* Responsive */
@media (max-width: 640px) {
  .hero__title {
    font-size: 2rem;
  }

  .card {
    padding: 1.75rem 1.5rem;
  }

  .sns-link {
    width: 100%;
    justify-content: center;
  }
}