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

:root {
  --bg:           #050d1a;
  --bg-card:      rgba(8, 20, 42, 0.75);
  --border:       rgba(0, 200, 255, 0.10);
  --border-hover: rgba(0, 200, 255, 0.25);
  --primary:      #00c8ff;
  --primary-dim:  rgba(0, 200, 255, 0.15);
  --text:         #e8f4ff;
  --text-muted:   #6b8aaa;
  --text-sub:     #4a6a8a;
  --danger:       #ff4d6d;
  --safe:         #00e5a0;
  --font-sans:    'Inter', system-ui, sans-serif;
  --font-mono:    'JetBrains Mono', 'Fira Code', monospace;
  --radius:       12px;
  --radius-sm:    8px;
  --shadow:       0 4px 32px rgba(0, 0, 0, 0.5);
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

/* ─── Layout ────────────────────────────────────────────────────────────────── */
.container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ─── Header ────────────────────────────────────────────────────────────────── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(5, 13, 26, 0.90);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
  gap: 16px;
}
.logo { display: flex; align-items: center; gap: 8px; text-decoration: none; }
.logo-prompt { color: var(--primary); font-family: var(--font-mono); font-size: 1.1rem; }
.logo-text { font-family: var(--font-mono); font-size: 0.85rem; font-weight: 600; letter-spacing: 0.08em; color: var(--text); }
nav { display: flex; gap: 4px; }
.nav-link {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.82rem;
  font-weight: 500;
  padding: 6px 12px;
  border-radius: 6px;
  transition: color 0.2s, background 0.2s;
}
.nav-link:hover { color: var(--primary); background: var(--primary-dim); }

/* ─── Hero ──────────────────────────────────────────────────────────────────── */
.hero {
  position: relative;
  padding: 96px 0 80px;
  text-align: center;
  overflow: hidden;
}
.hero-bg-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0,200,255,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,200,255,0.04) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 50%, black, transparent);
}
.hero::before {
  content: '';
  position: absolute;
  top: -80px; left: 50%;
  transform: translateX(-50%);
  width: 700px; height: 400px;
  background: radial-gradient(ellipse, rgba(0,200,255,0.10) 0%, transparent 70%);
  pointer-events: none;
}
.hero-label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  color: var(--primary);
  text-transform: uppercase;
  margin-bottom: 20px;
}
.ip-display-wrap { position: relative; display: inline-block; }
.ip-display {
  font-family: var(--font-mono);
  font-size: clamp(2.5rem, 8vw, 5.5rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  color: #fff;
  line-height: 1;
  position: relative;
  z-index: 1;
}
.ip-glow {
  position: absolute;
  inset: -20px;
  background: radial-gradient(ellipse, rgba(0,200,255,0.18) 0%, transparent 70%);
  pointer-events: none;
  animation: pulse 3s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 0.6; transform: scale(1); }
  50%       { opacity: 1;   transform: scale(1.06); }
}
.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-top: 32px;
  flex-wrap: wrap;
}
.badge-version {
  background: var(--primary-dim);
  border: 1px solid rgba(0,200,255,0.3);
  color: var(--primary);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 999px;
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  font-weight: 600;
  padding: 8px 18px;
  border-radius: 8px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s, transform 0.15s;
  font-family: var(--font-sans);
}
.btn:active { transform: scale(0.97); }
.btn-copy {
  background: var(--primary);
  color: #050d1a;
  border-color: var(--primary);
}
.btn-copy:hover { background: #33d6ff; }
.btn-refresh {
  background: rgba(255,255,255,0.06);
  color: var(--text);
  border-color: var(--border);
}
.btn-refresh:hover { background: rgba(255,255,255,0.10); border-color: var(--border-hover); }

/* ─── Info Grid ─────────────────────────────────────────────────────────────── */
.info-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  padding-bottom: 64px;
}
@media (max-width: 900px) { .info-grid { grid-template-columns: 1fr; } }
@media (min-width: 901px) and (max-width: 1100px) { .info-grid { grid-template-columns: repeat(2, 1fr); } }

/* ─── Card ──────────────────────────────────────────────────────────────────── */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  backdrop-filter: blur(16px);
  box-shadow: var(--shadow);
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease, transform 0.5s ease, border-color 0.25s;
}
.card.visible { opacity: 1; transform: translateY(0); }
.card:hover { border-color: var(--border-hover); }
.card-wide { grid-column: 1 / -1; }
.card-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 24px;
}
.card-header h2 { font-size: 1.05rem; font-weight: 600; }
.card-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px; height: 38px;
  border-radius: 9px;
  background: var(--primary-dim);
  color: var(--primary);
  flex-shrink: 0;
}

/* ─── Info Items ────────────────────────────────────────────────────────────── */
.info-grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 20px 16px; }
.info-grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px 16px; }
@media (max-width: 600px) {
  .info-grid-2, .info-grid-3 { grid-template-columns: 1fr; }
}
.info-item { display: flex; flex-direction: column; gap: 6px; }
.info-label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
}
.info-label svg { color: var(--primary); opacity: 0.7; }
.info-value { font-size: 0.95rem; font-weight: 500; color: var(--text); }
.info-sub { color: var(--text-muted); font-size: 0.82rem; margin-left: 4px; }
.info-mono { font-family: var(--font-mono); font-size: 0.88rem; color: var(--primary); }

/* ─── Security ──────────────────────────────────────────────────────────────── */
.security-list { display: flex; flex-direction: column; gap: 12px; }
.security-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border);
  gap: 12px;
}
.security-title { font-size: 0.9rem; font-weight: 500; margin-bottom: 2px; }
.security-desc  { font-size: 0.75rem; color: var(--text-muted); }
.badge {
  font-size: 0.72rem;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 999px;
  white-space: nowrap;
  flex-shrink: 0;
  letter-spacing: 0.05em;
}
.badge-safe    { background: rgba(0,229,160,0.15); color: var(--safe);   border: 1px solid rgba(0,229,160,0.3); }
.badge-danger  { background: rgba(255,77,109,0.15); color: var(--danger); border: 1px solid rgba(255,77,109,0.3); }
.badge-unknown { background: rgba(255,255,255,0.07); color: var(--text-muted); border: 1px solid var(--border); }

/* ─── UA Block ──────────────────────────────────────────────────────────────── */
.ua-block { margin-top: 24px; padding-top: 24px; border-top: 1px solid var(--border); }
.ua-block-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}
.ua-code {
  background: rgba(0,0,0,0.5);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: var(--radius-sm);
  padding: 16px;
  overflow-x: auto;
  white-space: pre;
}
.ua-code code {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-muted);
}
.btn-sm {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.78rem;
  font-weight: 600;
  padding: 5px 12px;
  border-radius: 6px;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--border);
  color: var(--text-muted);
  cursor: pointer;
  font-family: var(--font-sans);
  transition: background 0.2s, color 0.2s;
}
.btn-sm:hover { background: rgba(255,255,255,0.1); color: var(--text); }

/* ─── FAQ ───────────────────────────────────────────────────────────────────── */
.faq-section {
  background: rgba(0,200,255,0.025);
  border-top: 1px solid var(--border);
  padding: 80px 0;
}
.section-header { text-align: center; margin-bottom: 48px; }
.section-header h2 { font-size: 1.8rem; font-weight: 700; margin-bottom: 12px; }
.section-sub { color: var(--text-muted); font-size: 0.95rem; max-width: 540px; margin: 0 auto; }
.faq-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
@media (max-width: 720px) { .faq-grid { grid-template-columns: 1fr; } }
.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.4s ease, transform 0.4s ease, border-color 0.2s;
}
.faq-item.visible { opacity: 1; transform: translateY(0); }
.faq-item:hover { border-color: var(--border-hover); }
.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 18px 22px;
  background: none;
  border: none;
  color: var(--text);
  font-size: 0.92rem;
  font-weight: 600;
  text-align: left;
  cursor: pointer;
  font-family: var(--font-sans);
  transition: color 0.2s;
}
.faq-question:hover { color: var(--primary); }
.faq-chevron { flex-shrink: 0; color: var(--text-muted); transition: transform 0.25s ease; }
.faq-answer {
  padding: 0 22px 18px;
  color: var(--text-muted);
  font-size: 0.88rem;
  line-height: 1.7;
}

/* ─── Footer ────────────────────────────────────────────────────────────────── */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 32px 0;
  background: rgba(0,0,0,0.3);
}
.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.footer-desc  { font-size: 0.82rem; color: var(--text-muted); }
.footer-time  { display: flex; align-items: center; gap: 6px; font-size: 0.78rem; color: var(--text-sub); font-family: var(--font-mono); }

/* ─── Toast ─────────────────────────────────────────────────────────────────── */
.toast {
  position: fixed;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%) translateY(12px);
  background: rgba(0,200,255,0.15);
  border: 1px solid rgba(0,200,255,0.35);
  color: var(--primary);
  font-size: 0.84rem;
  font-weight: 600;
  padding: 10px 22px;
  border-radius: 999px;
  backdrop-filter: blur(10px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s, transform 0.25s;
  white-space: nowrap;
  z-index: 999;
}
.toast-show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ─── Scrollbar ─────────────────────────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(0,200,255,0.2); border-radius: 3px; }