/* ===========================================
   PicKit Common Styles
   Shared by all pages. Based on design mockups.
   =========================================== */

/* ----- CSS Custom Properties ----- */
:root {
  --color-bg: #f8fafc;
  --color-surface: #ffffff;
  --color-border: #e2e8f0;
  --color-border-hover: #cbd5e1;
  --color-border-light: #f1f5f9;

  --color-text-primary: #0f172a;
  --color-text-secondary: #475569;
  --color-text-tertiary: #64748b;
  --color-text-quaternary: #94a3b8;

  --color-blue: #2563eb;
  --color-blue-hover: #1d4ed8;
  --color-blue-bg: #eff6ff;
  --color-blue-border: #93c5fd;

  --color-purple: #7c3aed;
  --color-purple-bg: #faf5ff;

  --color-green: #10b981;
  --color-green-bg: #ecfdf5;
  --color-green-600: #059669;

  --color-amber: #f59e0b;
  --color-amber-bg: #fffbeb;

  --color-rose: #e11d48;
  --color-rose-bg: #fff1f2;

  --color-cyan: #0891b2;
  --color-cyan-bg: #ecfeff;

  --color-red: #ef4444;

  --nav-height: 56px;
  --nav-action-height: 36px;
  --max-width: 1200px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 12px;
  --radius-xl: 14px;
  --radius-2xl: 16px;
  --radius-full: 100px;

  --shadow-card: 0 1px 3px rgba(0,0,0,0.04), 0 8px 24px rgba(0,0,0,0.06);
  --shadow-btn: 0 4px 12px rgba(37,99,235,0.3);
  --shadow-focus: 0 0 0 3px rgba(37,99,235,0.1);

  --font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "PingFang SC", "Microsoft YaHei", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

[data-theme="dark"] {
  --color-bg: #0f172a;
  --color-surface: #1e293b;
  --color-border: #334155;
  --color-border-hover: #475569;
  --color-border-light: #1e293b;
  --color-text-primary: #f1f5f9;
  --color-text-secondary: #cbd5e1;
  --color-text-tertiary: #94a3b8;
  --color-text-quaternary: #64748b;
  --color-blue-bg: #1e3a5f;
  --color-purple-bg: #2e1065;
  --color-green-bg: #064e3b;
  --color-amber-bg: #451a03;
  --color-rose-bg: #4c0519;
  --color-cyan-bg: #164e63;
  --shadow-card: 0 1px 3px rgba(0,0,0,0.3), 0 8px 24px rgba(0,0,0,0.4);
}

[data-theme="dark"] .nav {
  background: rgba(15, 23, 42, 0.9);
}

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

body {
  font-family: var(--font-family);
  background: var(--color-bg);
  color: var(--color-text-primary);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--color-blue);
  text-decoration: none;
}

img {
  max-width: 100%;
  display: block;
}

/* ----- Navigation ----- */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,0.85);
  border-bottom: 1px solid var(--color-border);
  height: var(--nav-height);
}

.nav::before {
  content: '';
  position: absolute;
  inset: 0;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  z-index: -1;
  pointer-events: none;
}

.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 700;
  color: var(--color-text-primary);
  text-decoration: none;
}

.nav-logo-icon {
  width: 34px;
  height: 34px;
  background: linear-gradient(135deg, var(--color-blue), var(--color-purple));
  border-radius: 9px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 18px;
  font-weight: 800;
  flex-shrink: 0;
}

.nav-links {
  display: flex;
  gap: 4px;
  list-style: none;
}

.nav-links a {
  text-decoration: none;
  color: var(--color-text-secondary);
  font-size: 14px;
  font-weight: 500;
  padding: 8px 14px;
  border-radius: 8px;
  transition: all 0.15s;
}

.nav-links a:hover {
  background: var(--color-border-light);
  color: var(--color-text-primary);
}

.nav-links a.active {
  color: var(--color-blue);
  background: var(--color-blue-bg);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.nav-auth {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-auth-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-sizing: border-box;
  height: var(--nav-action-height);
  font-size: 13px;
  font-weight: 500;
  padding: 0 12px;
  border-radius: 8px;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text-secondary);
  cursor: pointer;
  font-family: inherit;
  transition: background 0.15s, border-color 0.15s, color 0.15s;
}

.nav-auth-btn:hover {
  background: var(--color-border-light);
  border-color: var(--color-border-hover);
  color: var(--color-text-primary);
}

.nav-auth-btn-primary {
  background: var(--color-blue);
  color: #fff;
  border-color: var(--color-blue);
}

.nav-auth-btn-primary:hover {
  background: var(--color-blue-hover);
  border-color: var(--color-blue-hover);
  color: #fff;
}

.nav-user-wrap {
  position: relative;
}

.nav-user-dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-green);
  margin-right: 6px;
  vertical-align: middle;
}

.nav-user-menu {
  position: absolute;
  right: 0;
  top: 100%;
  margin-top: 6px;
  min-width: 200px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  box-shadow: var(--shadow-card);
  padding: 6px;
  z-index: 200;
}

.nav-user-info {
  padding: 8px 10px 10px;
  border-bottom: 1px solid var(--color-border-light);
  margin-bottom: 4px;
}

.nav-user-info-label {
  font-size: 11px;
  color: var(--color-text-quaternary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 4px;
}

.nav-user-info-email {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text-primary);
  word-break: break-all;
}

.nav-user-info-since {
  font-size: 12px;
  color: var(--color-text-tertiary);
  margin-top: 4px;
}

.nav-user-info-quota {
  font-size: 12px;
  color: var(--color-blue, #2563eb);
  margin-top: 6px;
  font-weight: 500;
}

.nav-user-menu-item {
  display: block;
  width: 100%;
  text-align: left;
  padding: 8px 10px;
  border: none;
  background: none;
  font-size: 14px;
  cursor: pointer;
  border-radius: 6px;
  font-family: inherit;
}

.nav-user-menu-item:hover {
  background: var(--color-border-light);
}

.pickit-auth-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.45);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  animation: pickitAuthFadeIn 0.2s ease;
}

@keyframes pickitAuthFadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.pickit-auth-modal {
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  max-width: 400px;
  width: 100%;
  padding: 24px;
  position: relative;
  box-shadow: var(--shadow-card);
  animation: pickitAuthModalIn 0.22s ease;
}

@keyframes pickitAuthModalIn {
  from { opacity: 0; transform: scale(0.96) translateY(8px); }
  to { opacity: 1; transform: scale(1) translateY(0); }
}

.pickit-auth-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
}

.pickit-auth-close {
  position: static;
  flex-shrink: 0;
  border: none;
  background: none;
  font-size: 22px;
  cursor: pointer;
  color: var(--color-text-tertiary);
  line-height: 1;
  border-radius: 6px;
  padding: 2px 6px;
  margin: 0;
  transition: color 0.15s, background 0.15s;
}

.pickit-auth-close:hover {
  color: var(--color-text-primary);
  background: var(--color-border-light);
}

.pickit-auth-title {
  margin: 0;
  font-size: 18px;
  font-weight: 700;
  flex: 1;
  min-width: 0;
}

.pickit-auth-sub {
  font-size: 13px;
  color: var(--color-text-tertiary);
  margin: 0 0 14px;
  line-height: 1.5;
}

.pickit-auth-field {
  margin-bottom: 14px;
}

.pickit-auth-field label {
  display: block;
  font-size: 13px;
  color: var(--color-text-secondary);
  margin-bottom: 4px;
}

.pickit-auth-field input {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  font-size: 14px;
  box-sizing: border-box;
  font-family: inherit;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.pickit-auth-field input:focus {
  outline: none;
  border-color: var(--color-blue);
  box-shadow: 0 0 0 3px var(--color-blue-bg);
}

.pickit-auth-field.is-error input {
  border-color: var(--color-rose);
}

.pickit-auth-code-row {
  display: flex;
  gap: 8px;
  align-items: stretch;
}

.pickit-auth-code-row input {
  flex: 1;
  min-width: 0;
}

.pickit-auth-send-code {
  flex-shrink: 0;
  padding: 10px 14px;
  font-size: 13px;
  font-weight: 600;
  white-space: nowrap;
  border-radius: 8px;
  border: 1.5px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text-primary);
  cursor: pointer;
  font-family: inherit;
  transition: background 0.15s, border-color 0.15s;
}

.pickit-auth-send-code:hover:not(:disabled) {
  background: var(--color-border-light);
  border-color: var(--color-border-hover);
}

.pickit-auth-send-code:disabled {
  opacity: 0.65;
  cursor: not-allowed;
}

.pickit-auth-pass-input {
  position: relative;
  display: flex;
  align-items: center;
}

.pickit-auth-pass-input input {
  padding-right: 40px;
}

.pickit-auth-pass-toggle {
  position: absolute;
  right: 8px;
  border: none;
  background: none;
  padding: 4px;
  cursor: pointer;
  color: var(--color-text-tertiary);
  display: flex;
  align-items: center;
  border-radius: 4px;
}

.pickit-auth-pass-toggle:hover {
  color: var(--color-text-secondary);
}

.pickit-auth-pass-toggle .pickit-auth-pass-icon--hide {
  display: none;
}

.pickit-auth-pass-toggle.is-visible .pickit-auth-pass-icon--show {
  display: none;
}

.pickit-auth-pass-toggle.is-visible .pickit-auth-pass-icon--hide {
  display: block;
}

.pickit-auth-check {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  margin: 14px 0;
  cursor: pointer;
  line-height: 1.4;
}

.pickit-auth-check input[type="checkbox"] {
  flex-shrink: 0;
  width: 16px;
  height: 16px;
  margin: 0;
  cursor: pointer;
  accent-color: var(--color-blue);
}

.pickit-auth-check-text {
  flex: 1;
  min-width: 0;
}

.pickit-auth-check a {
  color: var(--color-blue);
  text-decoration: none;
}

.pickit-auth-check a:hover {
  text-decoration: underline;
}

.pickit-auth-links {
  text-align: right;
  margin: -4px 0 8px;
}

.pickit-auth-link {
  border: none;
  background: none;
  padding: 0;
  font-size: 13px;
  color: var(--color-blue);
  cursor: pointer;
  font-family: inherit;
}

.pickit-auth-link:hover {
  text-decoration: underline;
}

.pickit-auth-switch {
  text-align: center;
  font-size: 13px;
  color: var(--color-text-tertiary);
  margin-top: 14px;
}

.pickit-auth-actions {
  margin-top: 16px;
}

.pickit-auth-submit {
  width: 100%;
}

.pickit-auth-msg {
  min-height: 0;
  font-size: 13px;
  margin-bottom: 8px;
  line-height: 1.4;
}

.pickit-auth-msg:not(:empty) {
  min-height: 22px;
  margin-bottom: 10px;
}

.pickit-auth-msg.is-error {
  color: var(--color-rose);
}

.pickit-auth-msg.is-success {
  color: var(--color-green-600, #16a34a);
}

/* Language switcher in nav */
.nav-lang-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-sizing: border-box;
  height: var(--nav-action-height);
  font-size: 12px;
  font-weight: 600;
  color: var(--color-text-tertiary);
  background: var(--color-border-light);
  border: none;
  padding: 0 10px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.15s;
  font-family: inherit;
}

.nav-lang-btn:hover {
  background: var(--color-border);
  color: var(--color-text-primary);
}

.nav-menu-btn {
  display: none;
  align-items: center;
  justify-content: center;
  box-sizing: border-box;
  width: var(--nav-action-height);
  height: var(--nav-action-height);
  padding: 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  cursor: pointer;
  flex-shrink: 0;
}

.nav-menu-icon {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 18px;
  height: 14px;
}

.nav-menu-icon span {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--color-text-secondary);
  border-radius: 1px;
  transition: transform 0.2s, opacity 0.2s;
}

.nav-menu-open .nav-menu-icon span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-menu-open .nav-menu-icon span:nth-child(2) {
  opacity: 0;
}

.nav-menu-open .nav-menu-icon span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.nav-overlay {
  position: fixed;
  top: var(--nav-height);
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(15, 23, 42, 0.35);
  z-index: 99;
}

body.nav-menu-open {
  overflow: hidden;
}

/* ----- Page Header ----- */
.page-header {
  border-bottom: 1px solid var(--color-border);
  padding: 48px 24px;
}

.page-header.blue-purple {
  background: linear-gradient(135deg, var(--color-blue-bg) 0%, var(--color-purple-bg) 100%);
}

.page-header.purple-blue {
  background: linear-gradient(135deg, var(--color-purple-bg) 0%, var(--color-blue-bg) 100%);
}

.page-header.green-blue {
  background: linear-gradient(135deg, var(--color-green-bg) 0%, var(--color-blue-bg) 100%);
}

.page-header.amber-blue {
  background: linear-gradient(135deg, var(--color-amber-bg) 0%, var(--color-blue-bg) 100%);
}

.page-header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.breadcrumb {
  font-size: 13px;
  color: var(--color-text-tertiary);
  margin-bottom: 12px;
}

.breadcrumb a {
  color: var(--color-blue);
  text-decoration: none;
}

.page-header h1 {
  font-size: 34px;
  font-weight: 800;
  letter-spacing: -0.025em;
  margin-bottom: 8px;
}

.page-header p {
  font-size: 15px;
  color: var(--color-text-tertiary);
  max-width: 600px;
}

/* ----- Buttons ----- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 600;
  padding: 12px 24px;
  border-radius: var(--radius-lg);
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.15s;
  font-family: inherit;
  line-height: 1.4;
}

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

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

.btn-primary:hover {
  background: var(--color-blue-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-btn);
}

.btn-primary:disabled {
  background: var(--color-text-quaternary);
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.btn-outline {
  background: var(--color-surface);
  color: var(--color-text-primary);
  border: 1.5px solid var(--color-border);
}

.btn-outline:hover {
  border-color: var(--color-border-hover);
  background: var(--color-bg);
}

.btn-sm-primary {
  background: var(--color-blue);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  padding: 10px 20px;
  border-radius: var(--radius-md);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.15s;
  font-family: inherit;
}

.btn-sm-primary:hover {
  background: var(--color-blue-hover);
}

.btn-sm-outline {
  background: var(--color-surface);
  color: var(--color-text-primary);
  border: 1.5px solid var(--color-border);
  font-size: 14px;
  font-weight: 600;
  padding: 10px 20px;
  border-radius: var(--radius-md);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.15s;
  font-family: inherit;
}

.btn-sm-outline:hover {
  border-color: var(--color-border-hover);
}

/* ----- Footer ----- */
.footer {
  border-top: 1px solid var(--color-border);
  padding: 32px 24px;
  text-align: center;
  font-size: 13px;
  color: var(--color-text-quaternary);
}

.footer-beian {
  margin-top: 12px;
}

.footer-beian-inner {
  display: inline-flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 8px 12px;
  font-size: 12px;
}

.footer-beian-inner a {
  color: var(--color-text-quaternary);
  text-decoration: none;
}

.footer-beian-inner a:hover {
  color: var(--color-text-tertiary);
  text-decoration: underline;
}

.footer-beian-psb {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.footer-beian-sep {
  color: var(--color-border);
  user-select: none;
}

.footer-links {
  margin-top: 10px;
  font-size: 12px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 8px 12px;
}

.footer-links a {
  color: var(--color-text-quaternary);
  text-decoration: none;
}

.footer-links a:hover {
  color: var(--color-text-tertiary);
  text-decoration: underline;
}

.footer-links span {
  color: var(--color-text-quaternary);
}

/* ----- Legal pages ----- */
.legal-standalone {
  background: var(--color-bg, #f8fafc);
  min-height: 100vh;
}

.legal-standalone .legal-page {
  padding-top: 32px;
}

.legal-standalone-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 28px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--color-border-light);
}

.legal-standalone-brand {
  font-size: 15px;
  font-weight: 700;
  color: var(--color-text-primary);
}

.legal-page {
  max-width: 720px;
  margin: 0 auto;
  padding: 40px 24px 80px;
}

.legal-page h1 {
  font-size: 28px;
  font-weight: 800;
  margin-bottom: 8px;
}

.legal-meta {
  font-size: 13px;
  color: var(--color-text-tertiary);
  margin-bottom: 28px;
}

.legal-body h2 {
  font-size: 17px;
  font-weight: 700;
  margin: 28px 0 10px;
}

.legal-body p,
.legal-body li {
  font-size: 15px;
  line-height: 1.75;
  color: var(--color-text-secondary);
}

.legal-body ul {
  padding-left: 1.25em;
  margin: 8px 0 16px;
}

.legal-body a {
  color: var(--color-blue);
}

/* ----- Community section (homepage) ----- */
.community-section {
  max-width: var(--max-width);
  margin: 0 auto 48px;
  padding: 0 24px;
}

.community-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 24px 28px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
}

.community-text h3 {
  font-size: 17px;
  font-weight: 700;
  margin: 0 0 6px;
}

.community-text p {
  font-size: 14px;
  color: var(--color-text-tertiary);
  margin: 0 0 12px;
  line-height: 1.5;
}

.community-qq {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text-primary);
  margin-right: 10px;
}

.community-copy-btn {
  font-size: 13px;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 8px;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  cursor: pointer;
  font-family: inherit;
  transition: background 0.15s;
}

.community-copy-btn:hover {
  background: var(--color-border-light);
}

.community-qr {
  flex-shrink: 0;
  width: 100px;
  height: 100px;
  border-radius: 12px;
  border: 1px solid var(--color-border-light);
  object-fit: contain;
  background: #fff;
}

@media (max-width: 768px) {
  .nav-auth {
    gap: 6px;
  }

  .nav-auth-btn {
    font-size: 12px;
    padding: 0 10px;
  }

  .community-card {
    flex-direction: column;
    align-items: flex-start;
    padding: 20px;
  }

  .community-qr {
    display: none;
  }
}

/* ----- Main Content Container ----- */
.main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 32px 24px 80px;
}

/* ----- Section Headers (homepage-style) ----- */
.section {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px 80px;
}

.section-header {
  text-align: center;
  margin-bottom: 48px;
}

.section-label {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-blue);
  background: var(--color-blue-bg);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  margin-bottom: 16px;
}

.section-header h2 {
  font-size: 32px;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}

.section-header p {
  font-size: 15px;
  color: var(--color-text-tertiary);
  max-width: 500px;
  margin: 0 auto;
}

/* ----- Form Elements ----- */
.field-group {
  margin-bottom: 16px;
}

.field-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--color-text-tertiary);
  margin-bottom: 6px;
  display: block;
}

.field-input {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 14px;
  font-family: inherit;
  outline: none;
  transition: all 0.15s;
  background: var(--color-surface);
  color: var(--color-text-primary);
}

.field-input:focus {
  border-color: var(--color-blue);
  box-shadow: var(--shadow-focus);
}

textarea.field-input {
  resize: vertical;
  min-height: 80px;
}

select.field-input {
  appearance: auto;
}

/* ----- Upload Zone (shared pattern) ----- */
.upload-zone {
  background: var(--color-surface);
  border: 2px dashed var(--color-border-hover);
  border-radius: var(--radius-xl);
  padding: 64px 32px;
  text-align: center;
  transition: all 0.2s;
  cursor: pointer;
  min-height: 280px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.upload-zone:hover {
  border-color: var(--color-blue);
  background: #fafbff;
}

.upload-zone.drag-over {
  border-color: var(--color-blue);
  background: #fafbff;
}

.upload-zone-icon {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-2xl);
  background: var(--color-blue-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: var(--color-blue);
}

.upload-zone h3 {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 8px;
}

.upload-zone p {
  font-size: 14px;
  color: var(--color-text-tertiary);
  margin-bottom: 20px;
}

.upload-hint {
  font-size: 12px;
  color: var(--color-text-quaternary);
  margin-top: 12px;
}

.upload-zone-input {
  display: none;
}

/* ----- Panels / Cards ----- */
.panel {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
}

.panel-body {
  padding: 20px;
}

.panel-section {
  margin-bottom: 24px;
}

.panel-section:last-child {
  margin-bottom: 0;
}

.panel-label {
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-quaternary);
  margin-bottom: 12px;
}

/* ----- Tags ----- */
.tag {
  font-size: 12px;
  font-weight: 500;
  padding: 3px 10px;
  border-radius: var(--radius-sm);
  background: var(--color-border-light);
  color: var(--color-text-secondary);
}

/* ----- Badge ----- */
.size-badge {
  font-size: 12px;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 5px;
}

.size-badge.ios {
  background: var(--color-blue-bg);
  color: var(--color-blue);
}

.size-badge.android {
  background: var(--color-green-bg);
  color: var(--color-green);
}

.size-badge.web {
  background: var(--color-purple-bg);
  color: var(--color-purple);
}

.size-badge.macos {
  background: var(--color-amber-bg);
  color: var(--color-amber);
}

.size-badge.watch {
  background: var(--color-rose-bg);
  color: var(--color-rose);
}

/* ----- Loading Spinner ----- */
.spinner {
  width: 20px;
  height: 20px;
  border: 2px solid var(--color-border);
  border-top-color: var(--color-blue);
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
  display: inline-block;
}

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

/* ----- Toast / Notification ----- */
.toast {
  position: fixed;
  top: 72px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 200;
  padding: 12px 24px;
  border-radius: var(--radius-md);
  font-size: 14px;
  font-weight: 500;
  box-shadow: 0 4px 16px rgba(0,0,0,0.12);
  animation: toastIn 0.25s ease-out;
  pointer-events: auto;
  display: flex;
  align-items: center;
  gap: 12px;
  max-width: min(420px, calc(100vw - 32px));
}

.toast-text { flex: 1; }

.toast-close {
  background: transparent;
  border: none;
  color: inherit;
  font-size: 18px;
  line-height: 1;
  cursor: pointer;
  opacity: 0.85;
  padding: 0 2px;
}

.toast-close:hover { opacity: 1; }

.toast.success {
  background: var(--color-green-600);
  color: #fff;
}

.toast.error {
  background: var(--color-rose);
  color: #fff;
}

.toast.info {
  background: var(--color-blue);
  color: #fff;
}

@keyframes toastIn {
  from { opacity: 0; transform: translateX(-50%) translateY(-8px); }
  to { opacity: 1; transform: translateX(-50%) translateY(0); }
}

/* ----- Visually Hidden ----- */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  border: 0;
}

/* ----- Responsive ----- */
@media (max-width: 900px) {
  .page-header h1 {
    font-size: 28px;
  }

  .section-header h2 {
    font-size: 26px;
  }
}

@media (max-width: 768px) {
  .nav-inner {
    padding: 0 16px;
  }

  .nav-menu-btn {
    display: flex;
  }

  .nav-links {
    display: none;
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    width: 100%;
    flex-direction: column;
    gap: 0;
    padding: 4px 0 8px;
    margin: 0;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
    z-index: 101;
    list-style: none;
  }

  .nav-links li {
    width: 100%;
    flex-shrink: 0;
    border-bottom: 1px solid var(--color-border-light);
  }

  .nav-links li:last-child {
    border-bottom: none;
  }

  .nav-menu-open .nav-links {
    display: flex;
  }

  .nav-links a {
    display: block;
    width: 100%;
    box-sizing: border-box;
    font-size: 15px;
    line-height: 1.4;
    padding: 14px 20px;
    border-radius: 0;
    border-left: 3px solid transparent;
    white-space: nowrap;
    transition: color 0.15s, background-color 0.15s, border-color 0.15s;
  }

  .nav-links a:hover {
    background: var(--color-bg);
  }

  .nav-links a.active {
    color: var(--color-blue);
    background: var(--color-blue-bg);
    border-left-color: var(--color-blue);
    padding-left: 17px;
  }

  .nav-logo {
    font-size: 17px;
  }

  .nav-logo-icon {
    width: 28px;
    height: 28px;
    font-size: 15px;
    border-radius: 7px;
  }

  .page-header {
    padding: 28px 16px;
  }

  .page-header h1 {
    font-size: 26px;
  }

  .page-header p {
    font-size: 14px;
  }

  .breadcrumb {
    font-size: 12px;
    margin-bottom: 10px;
  }

  .main,
  .section {
    padding-left: 16px;
    padding-right: 16px;
  }

  .main {
    padding-top: 24px;
    padding-bottom: 64px;
  }

  .section {
    padding-bottom: 64px;
  }

  .section-header {
    margin-bottom: 32px;
  }

  .upload-zone {
    padding: 40px 20px;
    min-height: 220px;
  }

  .upload-zone h3 {
    font-size: 16px;
  }

  .panel-body {
    padding: 16px;
  }

  .btn {
    padding: 11px 20px;
    font-size: 14px;
  }

  .btn-group-stack {
    flex-direction: column;
    align-items: stretch;
  }

  .btn-group-stack .btn {
    width: 100%;
  }

  .table-scroll {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    margin: 0 -16px;
    padding: 0 16px;
  }

  .table-scroll table {
    min-width: 520px;
  }

  .footer {
    padding: 24px 16px;
  }

  .toast {
    top: 64px;
    left: 16px;
    right: 16px;
    transform: none;
    max-width: none;
  }

  @keyframes toastIn {
    from { opacity: 0; transform: translateY(-8px); }
    to { opacity: 1; transform: translateY(0); }
  }
}

@media (max-width: 480px) {
  .nav-inner {
    padding: 0 12px;
  }

  .page-header {
    padding: 24px 12px;
  }

  .page-header h1 {
    font-size: 22px;
  }

  .main,
  .section {
    padding-left: 12px;
    padding-right: 12px;
  }

  .section-header h2 {
    font-size: 22px;
  }
}

/* ----- 404 Error Page ----- */
.error-page {
  text-align: center;
  padding: 80px 24px 64px;
  max-width: 520px;
  margin: 0 auto;
}
.error-page-code {
  font-size: 72px;
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.04em;
  background: linear-gradient(135deg, var(--color-blue), var(--color-purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 16px;
}
.error-page h1 {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 12px;
}
.error-page p {
  font-size: 15px;
  color: var(--color-text-tertiary);
  line-height: 1.7;
  margin-bottom: 28px;
}
.error-page-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}
@media (max-width: 480px) {
  .error-page { padding: 48px 16px 40px; }
  .error-page-code { font-size: 56px; }
  .error-page-actions { flex-direction: column; align-items: stretch; }
  .error-page-actions .btn { width: 100%; }
}

.nav-theme-btn {
  width: 36px;
  height: var(--nav-action-height);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text-secondary);
  cursor: pointer;
  font-size: 16px;
  line-height: 1;
}

.nav-theme-btn:hover {
  border-color: var(--color-border-hover);
  color: var(--color-text-primary);
}

.upload-zone.is-loading,
.detail-upload.is-loading,
.panel-upload-zone.is-loading {
  position: relative;
  pointer-events: none;
  opacity: 0.7;
}

.upload-zone.is-loading::after,
.detail-upload.is-loading::after,
.panel-upload-zone.is-loading::after {
  content: '';
  position: absolute;
  inset: 0;
  margin: auto;
  width: 28px;
  height: 28px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-blue);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.tab-bar-item.has-content::after,
.toolbox-tab.has-content::after {
  content: '';
  display: inline-block;
  width: 6px;
  height: 6px;
  margin-left: 6px;
  background: var(--color-green);
  border-radius: 50%;
  vertical-align: middle;
}

.screenshot-slides-bar {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  margin-top: 12px;
  padding-bottom: 4px;
}

.screenshot-slide-thumb {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-sm);
  border: 2px solid var(--color-border);
  flex-shrink: 0;
  cursor: pointer;
  overflow: hidden;
  position: relative;
}

.screenshot-slide-thumb.active {
  border-color: var(--color-blue);
}

.screenshot-slide-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.ios-mockup-wrap {
  margin-top: 16px;
  text-align: center;
}

.ios-mockup-wrap canvas {
  max-width: 100%;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}

.metadata-panel {
  font-size: 12px;
  font-family: ui-monospace, monospace;
  background: var(--color-bg);
  border-radius: var(--radius-md);
  padding: 12px;
  max-height: 280px;
  overflow: auto;
  white-space: pre-wrap;
  word-break: break-all;
}