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

:root {
  --bg: #FFFDF5;
  --fg: #1A1A1A;
  --border: #000;
  --shadow: #000;
  --accent: #FF002B;
  --accent2: #7700FF;
  --muted: #666;
  --radius: 0;
  --border-w: 3px;
}

body {
  font-family: "PingFang SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--fg);
  min-height: 100vh;
  line-height: 1.5;
}

/* === Login Screen === */
.screen { padding: 24px; max-width: 1100px; margin: 0 auto; }

.login-box {
  max-width: 400px; margin: 120px auto; text-align: center;
}

.login-box h1 { font-size: 2rem; margin-bottom: 4px; }
.login-box .subtitle { color: var(--muted); margin-bottom: 24px; }

.login-box label { display: block; text-align: left; font-weight: 700; margin-bottom: 6px; }
.login-box input[type="password"] {
  width: 100%; padding: 12px 16px; font-size: 1rem;
  border: var(--border-w) solid var(--border); background: #fff;
  border-radius: var(--radius); margin-bottom: 16px;
}

/* === Header === */
header {
  display: flex; justify-content: space-between; align-items: center;
  padding-bottom: 16px; border-bottom: var(--border-w) solid var(--border); margin-bottom: 20px;
}
header h1 { font-size: 1.5rem; }
.header-right { display: flex; align-items: center; gap: 12px; }
#user-info { color: var(--muted); font-size: 0.9rem; }

/* === Layout (sidebar + content) === */
.main-layout { display: flex; gap: 0; min-height: calc(100vh - 100px); }

.sidebar {
  width: 160px; flex-shrink: 0;
  border-right: var(--border-w) solid var(--border);
  padding: 12px 0;
}
.nav-item {
  display: block; padding: 10px 20px; font-weight: 700; font-size: 0.9rem;
  color: var(--fg); text-decoration: none; cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: background 0.1s;
}
.nav-item:hover { background: #f0f0f0; }
.nav-item.active {
  background: var(--fg); color: var(--bg);
}

.content { flex: 1; padding: 0 0 0 20px; min-width: 0; }

/* === Toolbar === */
.toolbar {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 20px; gap: 12px; flex-wrap: wrap;
}
.tabs { display: flex; gap: 0; }
.toolbar-right { display: flex; gap: 8px; align-items: center; }

/* === Buttons === */
button {
  cursor: pointer; font-family: inherit; font-size: 0.9rem; font-weight: 700;
  padding: 8px 20px; border: var(--border-w) solid var(--border);
  background: #fff; color: var(--fg); border-radius: var(--radius);
  transition: box-shadow 0.1s, transform 0.1s;
}
button:hover { box-shadow: 3px 3px 0 0 var(--shadow); transform: translate(-1px, -1px); }
button:active { box-shadow: none; transform: translate(0,0); }

.btn-primary {
  background: var(--fg); color: var(--bg); border-color: var(--fg);
}
.btn-secondary { background: var(--bg); }
.btn-sm { padding: 4px 10px; font-size: 0.8rem; }

.tab {
  border-right-width: 0; padding: 8px 24px;
}
.tab:last-child { border-right-width: var(--border-w); }
.tab.active { background: var(--fg); color: var(--bg); }

#logout-btn { padding: 6px 16px; font-size: 0.85rem; }

/* === Cards === */
.card {
  border: var(--border-w) solid var(--border); padding: 16px 20px;
  margin-bottom: 8px; display: flex; align-items: center; gap: 16px;
  background: #fff; transition: box-shadow 0.1s;
}
.card:hover { box-shadow: 3px 3px 0 0 var(--shadow); }

.tier-badge {
  font-weight: 900; font-size: 1.1rem; min-width: 36px; text-align: center;
  padding: 4px 8px; border: var(--border-w) solid var(--border); flex-shrink: 0;
}
.tier-S\+ { background: #FF002B; color: #fff; }
.tier-S   { background: #F700FF; color: #fff; }
.tier-A   { background: #7700FF; color: #fff; }
.tier-B   { background: #0066FF; color: #fff; }
.tier-C   { background: #2FD62F; color: #fff; }
.tier-D   { background: #FFFDF5; color: #1A1A1A; }

.card-body { flex: 1; min-width: 0; }
.card-body h3 { font-size: 1rem; margin-bottom: 2px; }
.card-body .meta { font-size: 0.8rem; color: var(--muted); }
.card-body .desc { font-size: 0.85rem; margin-top: 2px; color: #444; }

.card-actions { display: flex; gap: 6px; flex-shrink: 0; }

/* === Pagination === */
.pagination {
  display: flex; justify-content: center; align-items: center; gap: 12px;
  margin-top: 20px; font-size: 0.9rem;
}
.pagination button:disabled { opacity: 0.4; cursor: default; }

/* === Modal === */
.modal-overlay {
  position: fixed; top: 0; left: 0; width: 100%; height: 100%;
  background: rgba(0,0,0,0.5); z-index: 1000;
  display: flex; align-items: center; justify-content: center;
}
.modal {
  background: var(--bg); border: var(--border-w) solid var(--border);
  padding: 0; max-width: 640px; width: 95%; max-height: 90vh; overflow-y: auto;
  box-shadow: 6px 6px 0 0 var(--shadow);
}
.modal-header {
  display: flex; justify-content: space-between; align-items: center;
  padding: 16px 20px; border-bottom: var(--border-w) solid var(--border);
}
.modal-header h2 { font-size: 1.2rem; }
.close-btn {
  font-size: 1.5rem; line-height: 1; padding: 0 8px; border: none; background: none;
}
form { padding: 20px; }
.form-row { display: flex; gap: 12px; }
.form-group { margin-bottom: 14px; flex: 1; }
.form-group.flex-2 { flex: 2; }
.form-group label { display: block; font-weight: 700; font-size: 0.85rem; margin-bottom: 4px; }

input[type="text"], input[type="number"], input[type="file"], select, textarea {
  width: 100%; padding: 8px 12px; font-size: 0.9rem; font-family: inherit;
  border: var(--border-w) solid var(--border); border-radius: var(--radius);
  background: #fff;
}
textarea { resize: vertical; }

fieldset {
  border: var(--border-w) solid var(--border); padding: 14px; margin-bottom: 14px;
}
fieldset legend { font-weight: 900; padding: 0 8px; }

.upload-row { display: flex; align-items: center; gap: 10px; }
.preview-img { max-width: 80px; max-height: 60px; border: 2px solid var(--border); }

.photos-container {
  display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 0;
}
.photo-thumb {
  position: relative; width: 80px; height: 80px;
  border: var(--border-w) solid var(--border);
  display: flex; align-items: center; justify-content: center;
  background: #fff;
}
.photo-thumb img {
  width: 100%; height: 100%; object-fit: cover;
}
.photo-thumb .photo-remove {
  position: absolute; top: -8px; right: -8px;
  width: 22px; height: 22px; padding: 0;
  font-size: 14px; line-height: 20px; text-align: center;
  background: var(--accent); color: #fff; border: 2px solid var(--border);
  border-radius: 0; cursor: pointer;
}

.modal-footer {
  display: flex; justify-content: flex-end; align-items: center; gap: 10px;
  padding-top: 12px; border-top: var(--border-w) solid var(--border);
}

/* === Messages === */
.error-msg { color: #FF002B; font-weight: 700; font-size: 0.85rem; }
.status-msg { text-align: center; padding: 40px; color: var(--muted); }

/* === Select / Filter === */
select {
  padding: 8px 12px; border: var(--border-w) solid var(--border);
  background: #fff; font-size: 0.9rem; font-family: inherit;
}

/* === Module / Section Titles === */
.module-title { font-size: 1.2rem; margin-bottom: 16px; }
.section-title { font-size: 1rem; margin: 24px 0 12px; }

/* === Dashboard Stats Row === */
.stats-row {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 16px; margin-bottom: 8px;
}
.stat-card {
  border: var(--border-w) solid var(--border);
  padding: 24px 16px; text-align: center;
  background: #fff; position: relative;
}
.stat-card:hover { box-shadow: 4px 4px 0 0 var(--shadow); }
.stat-number {
  font-size: 2.8rem; font-weight: 900; line-height: 1.1;
  color: var(--fg);
}
.stat-label {
  font-size: 0.85rem; color: var(--muted); margin-top: 4px;
  font-weight: 700; text-transform: uppercase;
}

/* === Quick Actions === */
.quick-actions {
  display: flex; flex-wrap: wrap; gap: 10px; margin-top: 8px;
}
.quick-actions .btn-primary {
  padding: 10px 24px; font-size: 0.95rem;
}

/* === Data Table === */
.table-wrap { overflow-x: auto; }
.data-table {
  width: 100%; border-collapse: collapse;
  border: var(--border-w) solid var(--border);
  font-size: 0.85rem;
}
.data-table th, .data-table td {
  text-align: left; padding: 10px 12px;
  border-bottom: 2px solid var(--border);
}
.data-table th {
  background: var(--fg); color: var(--bg);
  font-weight: 700; font-size: 0.8rem;
  text-transform: uppercase; letter-spacing: 0.05em;
}
.data-table tr:last-child td { border-bottom: none; }
.data-table tr:hover td { background: #FFFDE5; }

.cell-muted { color: var(--muted); font-size: 0.8rem; }
.cell-actions { white-space: nowrap; text-align: right; }

/* === Small Tier Badge (for table rows) === */
.tier-badge-sm {
  display: inline-block; font-weight: 900; font-size: 0.8rem;
  min-width: 28px; text-align: center;
  padding: 2px 8px; border: 2px solid var(--border);
}
.tier-S-plus { background: #FF002B; color: #fff; }
.tier-S   { background: #F700FF; color: #fff; }
.tier-A   { background: #7700FF; color: #fff; }
.tier-B   { background: #0066FF; color: #fff; }
.tier-C   { background: #2FD62F; color: #fff; }
.tier-D   { background: #FFFDF5; color: #1A1A1A; }

/* === Danger button === */
.btn-danger { background: #FF002B; color: #fff; border-color: #000; }

/* === Status Badges (Feedback) === */
.status-badge {
  display: inline-block; font-weight: 900; font-size: 0.8rem;
  min-width: 28px; text-align: center;
  padding: 2px 10px; border: 2px solid var(--border);
}
.status-new { background: #FF002B; color: #fff; }
.status-read { background: #FFE600; color: #1A1A1A; }
.status-resolved { background: #2FD62F; color: #fff; }

/* === Filter Select === */
.filter-select {
  padding: 8px 12px; border: var(--border-w) solid var(--border);
  background: #fff; font-size: 0.85rem; font-family: inherit;
}

/* === Wide Modal === */
.modal-wide { max-width: 780px; }

/* === Responsive === */
@media (max-width: 640px) {
  .main-layout { flex-direction: column; }
  .sidebar {
    width: 100%; border-right: none; border-bottom: var(--border-w) solid var(--border);
    display: flex; overflow-x: auto; padding: 0;
  }
  .nav-item { white-space: nowrap; }
  .content { padding: 12px 0 0 0; }
  .card { flex-wrap: wrap; }
  .card-actions { width: 100%; justify-content: flex-end; }
  .form-row { flex-direction: column; gap: 0; }
  .toolbar { flex-direction: column; align-items: flex-start; }
}