:root {
  --bg: #0f172a;
  --bg-elevated: #020617;
  --primary: #38bdf8;
  --primary-soft: rgba(56, 189, 248, 0.1);
  --accent: #a855f7;
  --text-main: #f9fafb;
  --text-muted: #9ca3af;
  --border-subtle: rgba(148, 163, 184, 0.4);
  --danger: #f97373;
  --success: #4ade80;
  --radius-lg: 18px;
  --radius-md: 12px;
  --shadow-soft: 0 18px 45px rgba(15, 23, 42, 0.85);
  --shadow-subtle: 0 8px 25px rgba(15, 23, 42, 0.65);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "SF Pro Text",
    "PingFang SC", "Microsoft YaHei", sans-serif;
  background: radial-gradient(circle at top, #1e293b 0, #020617 55%, #000 100%);
  color: var(--text-main);
}

.lf-header {
  padding: 32px 20px 12px;
  display: flex;
  justify-content: center;
  background: radial-gradient(circle at 0 0, #22c55e22 0, transparent 55%),
    radial-gradient(circle at 100% 0, #38bdf833 0, transparent 45%);
}

.lf-header__title {
  max-width: 960px;
}

.lf-logo {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.55);
  background: linear-gradient(
    135deg,
    rgba(15, 23, 42, 0.88),
    rgba(30, 64, 175, 0.88)
  );
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #e5e7eb;
}

.lf-header h1 {
  margin: 14px 0 6px;
  font-size: clamp(26px, 3vw, 30px);
  letter-spacing: 0.02em;
}

.lf-header p {
  margin: 0;
  font-size: 14px;
  color: var(--text-muted);
}

.lf-main {
  display: flex;
  justify-content: center;
  padding: 6px 20px 24px;
}

.lf-layout {
  width: 100%;
  max-width: 1100px;
  display: grid;
  grid-template-columns: minmax(0, 260px) minmax(0, 1.4fr);
  gap: 18px;
  border-radius: 26px;
  padding: 18px;
  background: radial-gradient(
        circle at top left,
        rgba(56, 189, 248, 0.18),
        transparent 60%
      )
      border-box,
    radial-gradient(
        circle at bottom right,
        rgba(129, 140, 248, 0.22),
        transparent 60%
      )
      border-box,
    linear-gradient(
      135deg,
      rgba(15, 23, 42, 0.96),
      rgba(15, 23, 42, 0.96)
    );
  box-shadow: var(--shadow-soft);
  border: 1px solid rgba(148, 163, 184, 0.45);
}

.lf-sidebar {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.lf-nav {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 10px;
  border-radius: var(--radius-lg);
  background: radial-gradient(
      circle at 0 0,
      rgba(56, 189, 248, 0.3),
      transparent 50%
    ),
    radial-gradient(
      circle at 100% 100%,
      rgba(180, 83, 9, 0.4),
      transparent 55%
    ),
    rgba(15, 23, 42, 0.95);
  box-shadow: var(--shadow-subtle);
}

.lf-nav__item {
  border: none;
  background: transparent;
  color: var(--text-muted);
  padding: 9px 10px;
  border-radius: 999px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  font-size: 14px;
  transition: all 0.18s ease-out;
}

.lf-nav__item::after {
  content: "›";
  font-size: 11px;
  opacity: 0;
  transform: translateX(-4px);
  transition: all 0.18s ease-out;
}

.lf-nav__item:hover {
  color: #e5e7eb;
  background: rgba(15, 23, 42, 0.9);
}

.lf-nav__item--active {
  color: #f9fafb;
  background: linear-gradient(135deg, #38bdf8, #a855f7);
  box-shadow: 0 10px 28px rgba(56, 189, 248, 0.55);
}

.lf-nav__item--active::after {
  opacity: 1;
  transform: translateX(0);
}

.lf-filter {
  padding: 14px 14px 16px;
  border-radius: var(--radius-lg);
  background: radial-gradient(
      circle at 0 0,
      rgba(56, 189, 248, 0.2),
      transparent 60%
    ),
    rgba(15, 23, 42, 0.96);
  border: 1px solid rgba(148, 163, 184, 0.6);
}

.lf-filter h3 {
  margin: 0 0 8px;
  font-size: 14px;
}

.lf-field {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: 10px;
  font-size: 13px;
}

.lf-field span {
  color: var(--text-muted);
}

.lf-field input,
.lf-field select,
.lf-field textarea {
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.6);
  padding: 8px 11px;
  outline: none;
  background: rgba(15, 23, 42, 0.9);
  color: var(--text-main);
  font-size: 13px;
}

.lf-field textarea {
  border-radius: 12px;
  resize: vertical;
}

.lf-field input::placeholder,
.lf-field textarea::placeholder {
  color: rgba(148, 163, 184, 0.8);
}

.lf-content {
  padding: 6px 6px 8px;
}

.lf-tab {
  display: none;
}

.lf-tab--active {
  display: block;
}

.lf-tab__header {
  margin-bottom: 10px;
}

.lf-tab__header h2 {
  margin: 0 0 2px;
  font-size: 18px;
}

.lf-tab__header p {
  margin: 0;
  font-size: 13px;
  color: var(--text-muted);
}

.lf-card-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 12px;
  margin-top: 8px;
}

.lf-card {
  position: relative;
  padding: 11px 12px 12px;
  border-radius: var(--radius-md);
  background: radial-gradient(
      circle at 0 0,
      rgba(56, 189, 248, 0.28),
      transparent 55%
    ),
    radial-gradient(
      circle at 100% 100%,
      rgba(234, 179, 8, 0.32),
      transparent 55%
    ),
    rgba(15, 23, 42, 0.97);
  border: 1px solid rgba(148, 163, 184, 0.8);
  box-shadow: var(--shadow-subtle);
}

.lf-card__badge {
  position: absolute;
  top: 8px;
  right: 10px;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border: 1px solid rgba(148, 163, 184, 0.6);
  background: rgba(15, 23, 42, 0.85);
}

.lf-card__badge--lost {
  border-color: rgba(248, 113, 113, 0.8);
  color: #fecaca;
}

.lf-card__badge--found {
  border-color: rgba(52, 211, 153, 0.9);
  color: #bbf7d0;
}

.lf-card__title {
  margin: 2px 0 6px;
  font-size: 15px;
}

.lf-card__image {
  width: 100%;
  max-height: 180px;
  border-radius: 10px;
  object-fit: cover;
  margin-bottom: 6px;
  border: 1px solid rgba(148, 163, 184, 0.7);
}

.lf-card__meta {
  list-style: none;
  padding: 0;
  margin: 0 0 4px;
  font-size: 12px;
  color: var(--text-muted);
}

.lf-card__meta li + li {
  margin-top: 2px;
}

.lf-card__desc {
  margin: 4px 0 6px;
  font-size: 13px;
}

.lf-card__contact {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  margin: 0;
  font-size: 12px;
  color: var(--text-muted);
}

.lf-empty {
  margin: 14px 0;
  padding: 10px 11px;
  border-radius: 12px;
  background: rgba(15, 23, 42, 0.9);
  border: 1px dashed rgba(148, 163, 184, 0.7);
  font-size: 13px;
  color: var(--text-muted);
}

.lf-form {
  margin-top: 10px;
  padding: 12px 14px;
  border-radius: var(--radius-lg);
  background: radial-gradient(
      circle at 0 0,
      rgba(56, 189, 248, 0.25),
      transparent 55%
    ),
    rgba(15, 23, 42, 0.97);
  border: 1px solid rgba(148, 163, 184, 0.8);
  box-shadow: var(--shadow-subtle);
}

.lf-form__grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px 14px;
}

.lf-field--full {
  grid-column: 1 / -1;
}

.lf-form__actions {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 12px;
}

.lf-button {
  border: none;
  border-radius: 999px;
  padding: 9px 18px;
  font-size: 13px;
  font-weight: 500;
  color: #020617;
  background: linear-gradient(135deg, #38bdf8, #a855f7);
  cursor: pointer;
  box-shadow: 0 12px 30px rgba(56, 189, 248, 0.65);
  transition: transform 0.15s ease-out, box-shadow 0.15s ease-out,
    opacity 0.15s ease-out;
}

.lf-button:hover {
  transform: translateY(-1px);
  box-shadow: 0 16px 40px rgba(56, 189, 248, 0.85);
}

.lf-button:active {
  transform: translateY(0);
  box-shadow: 0 8px 18px rgba(56, 189, 248, 0.6);
}

.lf-button--secondary {
  border-radius: 999px;
  padding: 7px 14px;
  font-size: 12px;
  background: rgba(15, 23, 42, 0.95);
  color: #e5e7eb;
  border: 1px solid rgba(148, 163, 184, 0.9);
  box-shadow: 0 8px 20px rgba(15, 23, 42, 0.9);
}

.lf-form__message {
  font-size: 12px;
  color: var(--text-muted);
}

.lf-form__message--success {
  color: var(--success);
}

.lf-footer {
  padding: 12px 16px 18px;
  text-align: center;
  font-size: 12px;
  color: var(--text-muted);
}

.lf-fab {
  position: fixed;
  right: 26px;
  bottom: 22px;
  width: 52px;
  height: 52px;
  border-radius: 999px;
  border: none;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: radial-gradient(
      circle at 0 0,
      rgba(56, 189, 248, 0.45),
      transparent 55%
    ),
    linear-gradient(135deg, #38bdf8, #a855f7);
  color: #020617;
  font-size: 28px;
  cursor: pointer;
  box-shadow: 0 16px 40px rgba(15, 23, 42, 0.95);
  transition: transform 0.16s ease-out, box-shadow 0.16s ease-out,
    opacity 0.16s ease-out;
  z-index: 40;
}

.lf-fab:hover {
  transform: translateY(-2px) scale(1.03);
  box-shadow: 0 22px 55px rgba(15, 23, 42, 1);
}

.lf-fab:active {
  transform: translateY(0) scale(0.97);
  box-shadow: 0 12px 28px rgba(15, 23, 42, 0.9);
}

.lf-fab__icon {
  line-height: 1;
  transform: translateY(-1px);
}

@media (max-width: 840px) {
  .lf-layout {
    grid-template-columns: minmax(0, 1fr);
    padding: 14px;
  }

  .lf-main {
    padding-inline: 12px;
  }

  .lf-form__grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .lf-card-list {
    grid-template-columns: minmax(0, 1fr);
  }
}