:root {
  color-scheme: light;
  --bg: #e9f6ff;
  --bg-alt: #ffffff;
  --card: #ffffff;
  --text: #12324a;
  --text-soft: #3c5a70;
  --accent: #4cb3ff;
  --accent-strong: #1f8ee6;
  --outline: rgba(18, 50, 74, 0.12);
  --shadow: 0 24px 60px rgba(18, 50, 74, 0.12);
  --radius: 22px;
  --topbar-bg: rgba(12, 22, 34, 0.92);
  --topbar-border: rgba(255, 255, 255, 0.08);
  --topbar-text: #f2f7ff;
  --topbar-muted: rgba(242, 247, 255, 0.7);
}

[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0f1b28;
  --bg-alt: #111f2f;
  --card: #15253a;
  --text: #e6f3ff;
  --text-soft: #b6cbe0;
  --accent: #4cb3ff;
  --accent-strong: #7fc9ff;
  --outline: rgba(230, 243, 255, 0.14);
  --shadow: 0 24px 60px rgba(5, 16, 26, 0.5);
  --topbar-bg: rgba(10, 17, 26, 0.95);
  --topbar-border: rgba(255, 255, 255, 0.12);
  --topbar-text: #f2f7ff;
  --topbar-muted: rgba(242, 247, 255, 0.75);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Trebuchet MS", "Segoe UI", sans-serif;
  color: var(--text);
  background: radial-gradient(circle at top, #f5fbff 0%, var(--bg) 45%, var(--bg-alt) 100%);
  min-height: 100vh;
  transition: background 0.4s ease, color 0.4s ease;
}

[data-theme="dark"] body {
  background: radial-gradient(circle at top, #172a3d 0%, var(--bg) 50%, var(--bg-alt) 100%);
}

.site-header {
  padding: 18px 6vw 0;
  position: sticky;
  top: 12px;
  z-index: 10;
}

.top-bar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 14px 18px;
  border-radius: 18px;
  background: var(--topbar-bg);
  border: 1px solid var(--topbar-border);
  box-shadow: 0 18px 40px rgba(4, 10, 16, 0.4);
  backdrop-filter: blur(14px);
  transition: background 0.35s ease, border-color 0.35s ease;
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
}

.brand-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  box-shadow: var(--shadow);
}

.brand-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--topbar-text);
}

.brand-subtitle {
  font-size: 0.9rem;
  color: var(--topbar-muted);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.account-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.account-label {
  font-size: 0.85rem;
  color: var(--topbar-muted);
  font-weight: 600;
}

.lang-switcher {
  position: relative;
}

.lang-button {
  padding: 8px 14px;
  display: grid;
  grid-template-columns: auto 12px;
  grid-template-rows: auto auto;
  column-gap: 10px;
  row-gap: 2px;
  color: var(--topbar-text);
  border-color: rgba(255, 255, 255, 0.12);
}

.lang-title {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--topbar-muted);
  grid-column: 1;
  grid-row: 1;
}

.lang-current {
  font-size: 0.95rem;
  font-weight: 600;
  grid-column: 1;
  grid-row: 2;
}

.chevron {
  width: 0;
  height: 0;
  border-left: 5px solid transparent;
  border-right: 5px solid transparent;
  border-top: 6px solid var(--topbar-muted);
  grid-column: 2;
  grid-row: 1 / 3;
  align-self: center;
}

.lang-menu {
  position: absolute;
  right: 0;
  top: calc(100% + 10px);
  min-width: 190px;
  background: var(--topbar-bg);
  border: 1px solid var(--topbar-border);
  border-radius: 16px;
  padding: 8px;
  display: grid;
  gap: 6px;
  opacity: 0;
  pointer-events: none;
  transform: translateY(-8px);
  transition: opacity 0.2s ease, transform 0.2s ease;
  z-index: 20;
}

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

.lang-menu.open {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.lang-option {
  border: none;
  background: rgba(255, 255, 255, 0.04);
  color: var(--topbar-text);
  padding: 8px 12px;
  border-radius: 12px;
  text-align: left;
  cursor: pointer;
  font-weight: 600;
}

.lang-option[aria-selected="true"] {
  background: rgba(76, 179, 255, 0.3);
  color: #e8f5ff;
}

.ghost-button,
.primary-button,
.secondary-button {
  border-radius: 999px;
  border: 1px solid var(--outline);
  padding: 10px 18px;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.3s ease, color 0.3s ease;
}

.ghost-button {
  background: rgba(255, 255, 255, 0.04);
  color: var(--topbar-text);
  border-color: rgba(255, 255, 255, 0.12);
}

.primary-button {
  background: var(--accent);
  color: #0b2236;
  border-color: transparent;
  box-shadow: 0 10px 30px rgba(76, 179, 255, 0.3);
}

.primary-button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  box-shadow: none;
  transform: none;
}

.secondary-button {
  background: var(--card);
  color: var(--text);
}

html.theme-switch * {
  transition: background 0.35s ease, color 0.35s ease, border-color 0.35s ease;
}

.primary-button:hover,
.secondary-button:hover,
.ghost-button:hover {
  transform: translateY(-1px);
}

main {
  padding: 24px 6vw 80px;
  display: flex;
  flex-direction: column;
  gap: 64px;
}

.hero {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 32px;
  align-items: center;
  padding: 32px;
  border-radius: 28px;
  background:
    linear-gradient(120deg, rgba(15, 38, 64, 0.75), rgba(15, 38, 64, 0.35)),
    radial-gradient(circle at top left, rgba(76, 179, 255, 0.35), transparent 60%),
    url("assets/hero-banner.png") center/cover no-repeat;
  border: 1px solid var(--outline);
  box-shadow: var(--shadow);
}

[data-theme="dark"] .hero {
  background:
    linear-gradient(120deg, rgba(8, 18, 30, 0.85), rgba(8, 18, 30, 0.5)),
    radial-gradient(circle at top left, rgba(76, 179, 255, 0.3), transparent 60%),
    url("assets/hero-banner.png") center/cover no-repeat;
}

.hero-text h1 {
  font-size: clamp(2rem, 4vw, 3.2rem);
  margin-bottom: 12px;
  color: #f5fbff;
}

.hero-text p {
  font-size: 1.05rem;
  color: rgba(245, 251, 255, 0.8);
  line-height: 1.6;
}

.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 18px;
}

.pill {
  display: inline-flex;
  padding: 6px 14px;
  background: rgba(76, 179, 255, 0.22);
  color: #d6f0ff;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.85rem;
  margin-bottom: 14px;
}

.server-ip {
  margin-top: 20px;
  font-size: 0.95rem;
  display: flex;
  gap: 8px;
  align-items: center;
  color: rgba(245, 251, 255, 0.85);
}

.hero-card {
  background: var(--card);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
  border: 1px solid var(--outline);
  color: var(--text);
}

.hero-card ol {
  padding-left: 18px;
  color: var(--text-soft);
  line-height: 1.8;
}

.status-pill {
  margin-top: 18px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border-radius: 999px;
  background: rgba(76, 179, 255, 0.15);
  color: var(--accent-strong);
  font-weight: 600;
}

.status-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #44d07f;
  box-shadow: 0 0 12px rgba(68, 208, 127, 0.8);
}

.status-dot.is-offline {
  background: #ff6b6b;
  box-shadow: 0 0 12px rgba(255, 107, 107, 0.8);
}

.status-dot.is-checking {
  background: #ffd166;
  box-shadow: 0 0 12px rgba(255, 209, 102, 0.8);
}

.section {
  background: var(--bg-alt);
  border-radius: var(--radius);
  padding: 36px;
  border: 1px solid var(--outline);
  box-shadow: 0 14px 40px rgba(18, 50, 74, 0.08);
  transition: background 0.3s ease, border-color 0.3s ease;
}

.section-header h2 {
  margin: 0 0 10px;
  font-size: 1.7rem;
}

.section-header p {
  margin: 0;
  color: var(--text-soft);
}

.grid {
  display: grid;
  gap: 18px;
  margin-top: 22px;
}

.features {
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

.feature-card,
.faq-card {
  background: var(--card);
  border-radius: 18px;
  padding: 20px;
  border: 1px solid var(--outline);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.feature-card:hover,
.faq-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 24px rgba(18, 50, 74, 0.12);
}

.feature-card h3,
.faq-card h3 {
  margin-top: 0;
}

.login-panel {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 18px;
  margin-top: 20px;
  align-items: end;
}

.login-panel label {
  display: block;
  font-weight: 600;
  margin-bottom: 6px;
}

.login-panel input {
  width: 100%;
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid var(--outline);
  background: var(--card);
  color: var(--text);
}

.login-help {
  grid-column: 1 / -1;
  color: var(--text-soft);
  font-size: 0.9rem;
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
}

.login-help code {
  background: rgba(76, 179, 255, 0.15);
  color: var(--text);
  padding: 4px 8px;
  border-radius: 8px;
  border: 1px solid var(--outline);
}

.verify-status {
  grid-column: 1 / -1;
  display: flex;
  gap: 8px;
  align-items: center;
  font-size: 0.95rem;
  color: var(--text-soft);
}

.verify-status strong {
  color: var(--text);
}

.empty-store {
  margin-top: 20px;
  padding: 22px;
  border-radius: 16px;
  border: 1px dashed var(--outline);
  text-align: center;
  color: var(--text-soft);
}

.site-footer {
  padding: 24px 6vw 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--outline);
  color: var(--text-soft);
}

.page-main {
  padding: 32px 6vw 80px;
  max-width: 960px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.page-title {
  margin: 0;
  font-size: clamp(2rem, 4vw, 3rem);
}

.page-subtitle {
  color: var(--text-soft);
  margin-top: 8px;
}

.content-list {
  margin: 16px 0 0;
  padding-left: 18px;
  line-height: 1.7;
  color: var(--text-soft);
}

.reveal {
  opacity: 0;
  transform: translateY(12px);
}

body.loaded .reveal {
  animation: fadeUp 0.7s ease forwards;
  animation-delay: calc(var(--reveal-delay, 0) * 0.1s);
}

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
  }

  body.loaded .reveal {
    animation: none;
  }
}

.footer-links {
  display: flex;
  gap: 18px;
}

.footer-links a {
  color: inherit;
  text-decoration: none;
}

@media (max-width: 720px) {
  .site-header {
    padding: 12px 5vw 0;
  }

  .top-bar-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .header-actions {
    width: 100%;
    justify-content: space-between;
  }

  .site-footer {
    flex-direction: column;
    gap: 12px;
    align-items: flex-start;
  }
}