:root {
  --bg-deep: #0b1f4f;
  --bg-card: rgba(18, 42, 96, 0.72);
  --bg-btn: #2f6fd6;
  --bg-btn-hover: #3d82ef;
  --text-main: #f5f8ff;
  --text-muted: rgba(245, 248, 255, 0.72);
  --accent-gold: #ffd54f;
  --danger: #ff6b6b;
  --success: #4ade80;
  --radius: 16px;
  --shadow: 0 12px 32px rgba(0, 0, 0, 0.28);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html,
body {
  min-height: 100%;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: linear-gradient(180deg, #0a1a42 0%, #0f2a66 45%, #123575 100%);
  color: var(--text-main);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

.page {
  max-width: 480px;
  margin: 0 auto;
  min-height: 100vh;
  padding: 20px 16px 28px;
  display: flex;
  flex-direction: column;
}

.header {
  text-align: center;
  margin-bottom: 22px;
}

.header h1 {
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.action-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 10px;
}

.upload-btn {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 92px;
  border: none;
  border-radius: var(--radius);
  background: var(--bg-btn);
  color: #fff;
  font-size: 0.95rem;
  font-weight: 600;
  box-shadow: var(--shadow);
  cursor: pointer;
  transition: transform 0.15s ease, background 0.15s ease;
}

.upload-btn:active {
  transform: scale(0.98);
}

.upload-btn:hover {
  background: var(--bg-btn-hover);
}

.upload-btn svg {
  width: 28px;
  height: 28px;
  fill: currentColor;
}

.upload-btn input[type="file"] {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
}

.upload-btn.active-source {
  box-shadow: 0 0 0 2px rgba(255, 167, 38, 0.85), var(--shadow);
}

[hidden] {
  display: none !important;
}

.preview-section {
  margin-bottom: 12px;
}

.preview-section[hidden] {
  display: none !important;
}

.preview-box {
  position: relative;
  min-height: 220px;
  border-radius: 14px;
  overflow: hidden;
  background: rgba(0, 0, 0, 0.28);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.preview-box img {
  display: block;
  width: 100%;
  max-height: 320px;
  object-fit: contain;
  background: rgba(0, 0, 0, 0.2);
}

.preview-loading {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 14px;
  background: rgba(6, 14, 36, 0.62);
  backdrop-filter: blur(2px);
}

.preview-loading p {
  font-size: 0.82rem;
  color: rgba(255, 255, 255, 0.88);
}

.preview-box.is-loading img {
  filter: brightness(0.72);
}

.hint {
  text-align: center;
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-bottom: 18px;
}

.stats-card {
  background: var(--bg-card);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 20px;
  padding: 18px 14px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(8px);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  text-align: center;
}

.stat-label {
  font-size: 0.72rem;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.stat-value {
  font-size: 1.35rem;
  font-weight: 700;
}

.divider {
  height: 1px;
  background: rgba(255, 255, 255, 0.12);
  margin: 16px 0;
}

.balance-row {
  text-align: center;
}

.balance-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.balance-value {
  font-size: 2.4rem;
  font-weight: 800;
  color: var(--accent-gold);
  line-height: 1.1;
}

.footer {
  margin-top: auto;
  padding-top: 24px;
  text-align: center;
  font-size: 0.72rem;
  color: var(--text-muted);
}

.footer p + p {
  margin-top: 6px;
}

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(4, 10, 28, 0.72);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  z-index: 300;
}

.modal-overlay[hidden] {
  display: none;
}

.modal-card {
  width: min(100%, 320px);
  background: linear-gradient(180deg, #1a4a9e 0%, #123575 100%);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 18px;
  padding: 22px 20px 18px;
  text-align: center;
  box-shadow: var(--shadow);
}

.modal-card h2 {
  font-size: 1.2rem;
  margin-bottom: 14px;
}

.modal-line {
  font-size: 0.95rem;
  color: rgba(255, 255, 255, 0.92);
  margin-bottom: 8px;
}

.modal-line.modal-error {
  color: #ffb4b4;
  line-height: 1.6;
}

.modal-btn {
  margin-top: 16px;
  width: 100%;
  border: none;
  border-radius: 12px;
  padding: 12px 16px;
  background: var(--bg-btn);
  color: #fff;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
}

.modal-error-card h2 {
  color: #ffb4b4;
}

.spinner {
  width: 42px;
  height: 42px;
  border: 3px solid rgba(255, 255, 255, 0.2);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.top-bar {
  position: fixed;
  top: 10px;
  right: 10px;
  display: flex;
  gap: 12px;
  z-index: 50;
}

.admin-link,
.logout-link {
  color: rgba(255, 255, 255, 0.55);
  font-size: 0.75rem;
  text-decoration: none;
}

.admin-link:hover,
.logout-link:hover {
  color: #fff;
}

.login-page .login-subtitle {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-top: 6px;
}

.login-card {
  margin-top: 8px;
}

.login-btn {
  width: 100%;
  margin-top: 6px;
}

.login-error {
  color: var(--danger);
  font-size: 0.85rem;
  margin-bottom: 12px;
}

.captcha-row {
  display: flex;
  gap: 10px;
  align-items: center;
}

.captcha-row input {
  flex: 1;
}

.captcha-img {
  width: 120px;
  height: 44px;
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  cursor: pointer;
  flex-shrink: 0;
}

.user-badge {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: 4px;
}

.admin-page {
  max-width: 720px;
  padding-bottom: calc(48px + env(safe-area-inset-bottom, 0px));
}

.admin-card {
  background: var(--bg-card);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 16px;
  padding: 18px 18px 22px;
  margin-bottom: 16px;
}

.admin-card:last-child {
  margin-bottom: 0;
}

.admin-card h2 {
  font-size: 1rem;
  margin-bottom: 14px;
}

.upload-count {
  font-size: 0.78rem;
  font-weight: 400;
  color: var(--text-muted);
}

.upload-gallery {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
}

.upload-item {
  border-radius: 12px;
  overflow: hidden;
  background: rgba(0, 0, 0, 0.22);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.upload-thumb {
  display: block;
  aspect-ratio: 1;
  overflow: hidden;
  background: rgba(0, 0, 0, 0.3);
}

.upload-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.2s ease;
}

.upload-thumb:hover img {
  transform: scale(1.05);
}

.upload-meta {
  padding: 8px 10px 10px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 0.72rem;
  color: var(--text-muted);
}

.upload-tag {
  display: inline-block;
  width: fit-content;
  padding: 2px 8px;
  border-radius: 6px;
  background: rgba(47, 111, 214, 0.35);
  color: #dceaff;
  font-weight: 600;
}

.upload-reward {
  color: var(--accent-gold);
  font-weight: 600;
}

.upload-device {
  word-break: break-all;
  opacity: 0.85;
}

.upload-category-label {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-top: 4px;
  font-size: 0.72rem;
  color: var(--text-muted);
}

.upload-category-select {
  width: 100%;
  padding: 9px 10px;
  border-radius: 8px;
  border: 1px solid #7eb4ff;
  background: #eef3ff;
  color: #102a5c;
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  -webkit-appearance: none;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%23102a5c' d='M1 1l5 5 5-5'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
  padding-right: 28px;
}

.upload-category-select:focus {
  outline: none;
  border-color: #2f6fd6;
  box-shadow: 0 0 0 2px rgba(47, 111, 214, 0.35);
}

.upload-category-select option {
  background: #ffffff;
  color: #102a5c;
  font-size: 0.88rem;
  font-weight: 600;
  padding: 8px;
}

.upload-actions {
  display: flex;
  gap: 6px;
  margin-top: 6px;
}

.btn-mini {
  flex: 1;
  border: none;
  border-radius: 8px;
  padding: 6px 8px;
  font-size: 0.72rem;
  font-weight: 600;
  cursor: pointer;
  color: #fff;
}

.btn-save-category,
.btn-save-user {
  background: var(--bg-btn);
  color: #fff;
}

.btn-unlock-user {
  background: rgba(255, 107, 107, 0.22);
  border: 1px solid rgba(255, 107, 107, 0.45);
  color: #ffc9c9;
}

.btn-delete-upload {
  background: rgba(255, 107, 107, 0.35);
  border: 1px solid rgba(255, 107, 107, 0.45);
}

.upload-empty {
  text-align: center;
  color: var(--text-muted);
  font-size: 0.88rem;
  padding: 24px 0;
}

.admin-toast {
  position: fixed;
  left: 50%;
  bottom: 24px;
  transform: translateX(-50%);
  max-width: calc(100% - 32px);
  width: 360px;
  padding: 12px 16px;
  border-radius: 12px;
  background: rgba(12, 24, 58, 0.95);
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: var(--shadow);
  font-size: 0.88rem;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.25s ease, visibility 0.25s ease;
  z-index: 100;
}

.admin-toast.show {
  opacity: 1;
  visibility: visible;
}

.admin-toast.success {
  border-color: rgba(74, 222, 128, 0.45);
}

.admin-toast.error {
  border-color: rgba(255, 107, 107, 0.45);
}

.form-group {
  margin-bottom: 14px;
}

.form-group label {
  display: block;
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.form-group input {
  width: 100%;
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
  font-size: 0.92rem;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.btn-primary,
.btn-secondary {
  display: inline-block;
  border: none;
  border-radius: 10px;
  padding: 11px 18px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
}

.btn-primary {
  background: var(--bg-btn);
  color: #fff;
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  text-decoration: none;
}

.admin-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 6px;
  padding-top: 16px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.admin-actions .btn-logout {
  background: rgba(255, 107, 107, 0.18);
  border: 1px solid rgba(255, 107, 107, 0.35);
}

.form-group input:focus {
  outline: none;
  border-color: rgba(126, 180, 255, 0.65);
  box-shadow: 0 0 0 2px rgba(47, 111, 214, 0.25);
}

@media (max-width: 600px) {
  .admin-page .form-grid {
    grid-template-columns: 1fr;
  }

  .upload-gallery {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 601px) and (max-width: 900px) {
  .upload-gallery {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 380px) {
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .action-row {
    grid-template-columns: 1fr;
  }
}

.login-switch {
  margin-top: 14px;
  text-align: center;
  font-size: 0.88rem;
}

.login-switch a {
  color: #8eb8ff;
  text-decoration: none;
}

.preview-banner {
  margin: 0 0 14px;
  padding: 10px 12px;
  border-radius: 10px;
  background: rgba(47, 111, 214, 0.18);
  border: 1px solid rgba(126, 180, 255, 0.35);
  color: #b8d4ff;
  font-size: 0.88rem;
  text-align: center;
}

.lock-banner {
  margin: 0 0 14px;
  padding: 10px 12px;
  border-radius: 10px;
  background: rgba(255, 107, 107, 0.15);
  border: 1px solid rgba(255, 107, 107, 0.35);
  color: #ffb4b4;
  font-size: 0.88rem;
  text-align: center;
}

.action-row.is-disabled .upload-btn {
  opacity: 0.45;
  pointer-events: none;
}

.user-table-wrap {
  overflow-x: auto;
}

.user-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.82rem;
}

.user-table th,
.user-table td {
  padding: 8px 6px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  text-align: left;
  vertical-align: middle;
}

.user-table th {
  color: #9eb4dc;
  font-weight: 600;
}

.user-table .mono {
  font-family: Consolas, monospace;
  font-size: 0.75rem;
  word-break: break-all;
}

.mini-input {
  width: 100%;
  min-width: 72px;
  padding: 6px 8px;
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  background: rgba(255, 255, 255, 0.06);
  color: #fff;
  font-size: 0.8rem;
}

.badge-locked {
  color: #ff8f8f;
  font-weight: 600;
}

.badge-ok {
  color: #7ddea8;
}

.row-locked {
  background: rgba(255, 107, 107, 0.06);
}

.table-actions {
  white-space: nowrap;
}

.table-actions .btn-mini {
  flex: none;
  min-width: 52px;
  border: 1px solid rgba(126, 180, 255, 0.35);
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
}

.agent-create-form {
  margin-bottom: 8px;
}

.agent-register-link-box {
  margin-top: 12px;
  padding: 12px;
  border-radius: 10px;
  background: rgba(47, 111, 214, 0.12);
  border: 1px solid rgba(126, 180, 255, 0.25);
  text-align: left;
}

.agent-register-link-label {
  display: block;
  font-size: 0.82rem;
  color: #b8d4ff;
  margin-bottom: 8px;
}

.agent-register-link {
  display: block;
  word-break: break-all;
  color: #8eb8ff;
  font-size: 0.8rem;
  margin-bottom: 10px;
  text-decoration: none;
}

.agent-register-link:hover {
  color: #fff;
  text-decoration: underline;
}

.invite-linked-tip {
  margin: 0 0 14px;
  padding: 10px 12px;
  border-radius: 8px;
  background: rgba(47, 111, 214, 0.15);
  color: #b8d4ff;
  font-size: 0.86rem;
}

.admin-page .top-bar .admin-link {
  color: #8eb8ff;
  font-size: 0.82rem;
  font-weight: 600;
}