/* ============================================================
   ERROR.CSS — 404 页面
   前缀：error-
   依赖：common.css
   ============================================================ */

.error-main {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 140px 0 80px;
  background: linear-gradient(180deg, var(--gray-50) 0%, #FFFFFF 100%);
  position: relative;
  overflow: hidden;
}
.error-main::before {
  content: '';
  position: absolute;
  top: -30%;
  right: -10%;
  width: 50%;
  height: 120%;
  background: radial-gradient(circle, rgba(29,122,74,0.05) 0%, transparent 70%);
  pointer-events: none;
}
.error-main::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 40%;
  height: 100%;
  background: radial-gradient(circle, rgba(29,122,74,0.04) 0%, transparent 70%);
  pointer-events: none;
}

.error-inner {
  position: relative;
  z-index: 1;
  max-width: 720px;
  margin: 0 auto;
  text-align: center;
  padding: 0 24px;
}

/* 大号 404 数字 */
.error-code {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-bottom: 8px;
  line-height: 1;
  user-select: none;
}
.error-code .error-digit {
  font-size: 8.5rem;
  font-weight: 200;
  color: var(--gray-800);
  letter-spacing: -0.05em;
  display: inline-block;
  position: relative;
}
.error-code .error-zero {
  width: 110px;
  height: 110px;
  border-radius: 50%;
  border: 8px solid var(--green);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--green);
  font-size: 3rem;
  position: relative;
  animation: errorPulse 3s ease-in-out infinite;
}
.error-code .error-zero i { animation: errorSpin 8s linear infinite; }
@keyframes errorPulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(29,122,74,0.15); }
  50% { box-shadow: 0 0 0 18px rgba(29,122,74,0.06); }
}
@keyframes errorSpin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.error-inner h1 {
  font-size: 2rem;
  font-weight: 500;
  color: var(--gray-800);
  letter-spacing: -0.02em;
  margin-bottom: 14px;
  line-height: 1.3;
}
.error-inner .error-desc {
  font-size: 1.02rem;
  color: var(--gray-500);
  line-height: 1.8;
  max-width: 520px;
  margin: 0 auto 32px;
}

.error-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
  margin-bottom: 48px;
}
.error-actions .btn-primary i,
.error-actions .btn-outline i {
  margin-right: 8px;
  font-size: 0.85rem;
}

/* 快速链接 */
.error-links {
  background: white;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 32px 32px 28px;
  box-shadow: var(--shadow);
  text-align: left;
}
.error-links .error-links-title {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--gray-400);
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 20px;
  text-align: center;
}
.error-links-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}
.error-link-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 20px 12px;
  border-radius: 12px;
  background: var(--gray-50);
  border: 1px solid transparent;
  transition: 0.25s ease;
  text-decoration: none;
  color: inherit;
  text-align: center;
}
.error-link-item:hover {
  background: var(--green-light);
  border-color: var(--green);
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(29,122,74,0.1);
}
.error-link-item .error-link-icon {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: white;
  color: var(--green);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.05rem;
  transition: 0.25s ease;
  box-shadow: 0 2px 8px rgba(0,0,0,0.04);
}
.error-link-item:hover .error-link-icon {
  background: var(--green);
  color: white;
  transform: scale(1.06);
}
.error-link-item .error-link-label {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--gray-700);
  transition: color 0.2s;
}
.error-link-item:hover .error-link-label { color: var(--green); }

/* ============================================================
   ERROR 响应式
   ============================================================ */
@media (max-width: 820px) {
  .error-code .error-digit { font-size: 6rem; }
  .error-code .error-zero { width: 80px; height: 80px; border-width: 6px; font-size: 2.2rem; }
  .error-inner h1 { font-size: 1.6rem; }
  .error-inner .error-desc { font-size: 0.95rem; }
  .error-links-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .error-main { padding: 120px 0 60px; min-height: auto; }
  .error-code .error-digit { font-size: 5rem; }
  .error-code .error-zero { width: 68px; height: 68px; border-width: 5px; font-size: 1.8rem; }
  .error-inner h1 { font-size: 1.4rem; }
  .error-inner .error-desc { font-size: 0.9rem; margin-bottom: 26px; }
  .error-actions { gap: 10px; margin-bottom: 36px; }
  .error-actions .btn-primary,
  .error-actions .btn-outline { padding: 11px 24px; font-size: 0.85rem; }
  .error-links { padding: 26px 20px 22px; }
  .error-links-grid { gap: 10px; }
  .error-link-item { padding: 16px 10px; }
  .error-link-item .error-link-icon { width: 40px; height: 40px; font-size: 0.95rem; }
  .error-link-item .error-link-label { font-size: 0.8rem; }
}

@media (max-width: 480px) {
  .error-code .error-digit { font-size: 4rem; }
  .error-code .error-zero { width: 56px; height: 56px; border-width: 4px; font-size: 1.5rem; }
  .error-code { gap: 4px; }
  .error-inner h1 { font-size: 1.25rem; }
  .error-inner .error-desc { font-size: 0.85rem; }
  .error-actions { flex-direction: column; align-items: stretch; }
  .error-actions .btn-primary,
  .error-actions .btn-outline { width: 100%; text-align: center; justify-content: center; }
  .error-links-grid { grid-template-columns: repeat(2, 1fr); }
}