/* ===== 赛博朋克入口页 ===== */

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  overflow-x: hidden;
}

body {
  font-family: var(--font-mono);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  min-height: 100dvh;
}

#particle-bg {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

.landing-wrapper {
  position: relative;
  z-index: 1;
  width: min(680px, 94vw);
  display: flex;
  flex-direction: column;
  gap: 24px;
  padding: 24px 0 32px;
}

/* ===== Hero ===== */
.hero {
  text-align: center;
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(22px, 5vw, 38px);
  font-weight: 700;
  color: var(--neon-cyan);
  text-shadow: var(--glow-cyan-md);
  letter-spacing: 0.08em;
  margin: 0 0 6px;
  text-transform: uppercase;
}

.hero-sub {
  font-size: clamp(11px, 2.2vw, 13px);
  color: var(--text-dim);
  letter-spacing: 0.25em;
  margin: 0;
  text-transform: uppercase;
}

.hero-line {
  width: 60%;
  height: 1px;
  margin: 12px auto 0;
  background: linear-gradient(
    90deg,
    transparent 0%,
    var(--neon-cyan) 30%,
    var(--neon-cyan) 70%,
    transparent 100%
  );
  box-shadow: var(--glow-cyan-sm);
}

/* ===== Portal Grid ===== */
.portal-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.portal-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 16px 20px;
  background: var(--cyber-panel);
  border: 1px solid var(--cyber-border);
  border-radius: 4px;
  text-decoration: none;
  color: var(--text);
  font-family: var(--font-mono);
  transition: border-color 0.25s, box-shadow 0.25s, transform 0.2s;
  overflow: hidden;
}

.portal-card.active {
  border-color: var(--neon-cyan);
  box-shadow: var(--glow-cyan-sm);
  cursor: pointer;
}
.portal-card.active:hover {
  border-color: var(--neon-cyan);
  box-shadow: var(--glow-cyan-md);
  transform: translateY(-1px);
}
.portal-card.active:active {
  transform: scale(0.98);
}

.portal-card.locked {
  border-color: rgba(255, 51, 51, 0.2);
  opacity: 0.7;
  cursor: pointer;
  filter: none;
}
.portal-card.locked:hover {
  border-color: var(--neon-red);
  box-shadow: 0 0 8px rgba(255, 51, 51, 0.15);
  transform: translateY(-1px);
}
.portal-card.locked:active {
  transform: scale(0.98);
}

.card-top-bar {
  font-size: 10px;
  color: var(--text-dim);
  letter-spacing: 0.12em;
  display: flex;
  align-items: center;
  gap: 8px;
}

.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  display: inline-block;
}
.status-dot.online {
  background: var(--neon-green);
  box-shadow: var(--glow-green-sm);
}
.status-dot.offline {
  background: var(--neon-red);
  box-shadow: var(--glow-red-sm);
}

.card-body h2 {
  font-size: 14px;
  font-weight: 700;
  margin: 0 0 4px;
  color: var(--neon-cyan);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.card-body p {
  font-size: 11.5px;
  color: var(--text-dim);
  margin: 0;
  line-height: 1.5;
}

.enter-cmd {
  display: block;
  margin-top: 8px;
  font-size: 11px;
  color: var(--neon-cyan);
  letter-spacing: 0.08em;
}
.portal-card.active:hover .enter-cmd {
  text-shadow: var(--glow-cyan-sm);
}

.card-glow {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(ellipse at 50% 0%, rgba(0, 255, 255, 0.04), transparent 70%);
  opacity: 0;
  transition: opacity 0.3s;
}
.portal-card.active:hover .card-glow { opacity: 1; }

/* ===== System Log Footer ===== */
.sys-log {
  text-align: center;
  font-size: 10.5px;
  color: var(--text-dim);
  font-family: var(--font-mono);
  letter-spacing: 0.06em;
}
.log-prefix { color: var(--neon-cyan); }

/* ===== 响应式 ===== */
@media (min-width: 600px) {
  .portal-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 960px) {
  .portal-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 767px) {
  .landing-wrapper { padding: 16px 0 20px; gap: 16px; }
  .portal-card { padding: 12px 16px; gap: 4px; }
  .hero-sub { letter-spacing: 0.15em; }
}