:root {
  --bg: #ffffff;
  --card: #ffffff;
  --line: #e5e7eb;
  --line-dark: #d1d5db;
  --text: #111827;
  --muted: #6b7280;
  --primary: #f26a21;
  --primary-strong: #d85b16;
  --primary-soft: #fff1e7;
  --soft: #f9fafb;
  --radius: 16px;
  --shadow: 0 4px 20px rgba(17, 24, 39, 0.04);
  --button-shadow: 0 10px 24px rgba(242, 106, 33, 0.22);
  --sidebar-width: 250px;
  --max-width: 1180px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Helvetica Neue", sans-serif;
  color: var(--text);
  background: var(--bg);
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input {
  font: inherit;
}

.white-body {
  background: #fff;
}

.auth-root,
.workspace-root {
  width: min(var(--max-width), calc(100% - 24px));
  margin: 0 auto;
}

.auth-root {
  min-height: 100dvh;
  display: flex;
  align-items: center;
  padding: 16px 0;
}

.workspace-root {
  padding: 20px 0 32px;
}

.auth-page {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 20px;
}

.auth-title-block {
  width: min(100%, 420px);
  text-align: center;
}

.auth-title-block h1,
.topbar-simple h1,
.content-header h2 {
  margin: 0;
  font-size: 1.9rem;
  line-height: 1.2;
}

.auth-title-block p,
.topbar-simple p,
.content-header p,
.empty-text,
.simple-message,
.tool-card-simple p {
  margin: 8px 0 0;
  color: var(--muted);
  line-height: 1.6;
}

.auth-card,
.page-card,
.sidebar-simple,
.content-simple {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.auth-card {
  width: min(100%, 760px);
  padding: 22px;
}

.auth-head-row {
  display: flex;
  justify-content: space-between;
  align-items: stretch;
  gap: 16px;
  margin-bottom: 14px;
}

.auth-switch-row,
.topbar-buttons,
.summary-row,
.admin-summary,
.tab-strip,
.subject-nav-children,
.tool-card-head {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  align-items: center;
}

.auth-switch-row {
  flex: 1 1 auto;
  margin-bottom: 0;
}

.auth-site-card {
  min-width: 196px;
  padding: 12px 16px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: linear-gradient(180deg, #fff8f2 0%, #ffffff 100%);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
  text-align: left;
}

.auth-site-label {
  color: var(--muted);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.auth-site-card strong {
  display: block;
  margin-top: 6px;
  color: var(--text);
  font-size: 1rem;
  line-height: 1.25;
}

.auth-site-card em {
  display: block;
  margin-top: 4px;
  color: var(--primary-strong);
  font-style: normal;
  font-size: 0.86rem;
  line-height: 1.4;
}

.simple-switch,
.simple-tab,
.ghost-button,
.primary-button,
.subject-nav-button,
.subject-child-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  white-space: nowrap;
  appearance: none;
  border: 1px solid var(--primary);
  background: var(--primary);
  color: #fff;
  border-radius: 12px;
  min-height: 42px;
  padding: 0 14px;
  cursor: pointer;
  line-height: 1.1;
  font-weight: 700;
  box-shadow: var(--button-shadow);
  transition:
    transform 160ms ease,
    background 160ms ease,
    border-color 160ms ease,
    box-shadow 160ms ease;
}

.simple-switch:hover,
.simple-tab:hover,
.ghost-button:hover,
.primary-button:hover,
.subject-nav-button:hover,
.subject-child-button:hover {
  background: var(--primary-strong);
  border-color: var(--primary-strong);
  box-shadow: 0 12px 28px rgba(216, 91, 22, 0.24);
}

.simple-switch.active,
.simple-tab.active,
.subject-child-button.active,
.subject-nav-item.active > .subject-nav-button {
  background: var(--primary-strong);
  border-color: var(--primary-strong);
  box-shadow: 0 12px 28px rgba(216, 91, 22, 0.26);
}

.primary-button {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

.full-width {
  width: 100%;
  justify-content: center;
}

.inline-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.simple-form,
.tool-list,
.subject-nav-list {
  display: grid;
  gap: 12px;
}

.simple-field {
  display: grid;
  gap: 8px;
}

.simple-field span {
  font-size: 0.92rem;
  font-weight: 600;
}

.simple-field input {
  width: 100%;
  min-height: 46px;
  padding: 0 14px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: #fff;
}

.simple-message {
  margin-top: 14px;
}

.workspace-page {
  display: grid;
  gap: 16px;
}

.topbar-simple {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  align-items: center;
}

.workspace-layout {
  display: grid;
  grid-template-columns: var(--sidebar-width) minmax(0, 1fr);
  gap: 16px;
  align-items: start;
}

.sidebar-simple,
.content-simple,
.page-card {
  padding: 16px;
}

.sidebar-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.subject-nav-item {
  border: 1px solid var(--line);
  border-radius: 14px;
  overflow: hidden;
  background: #fff;
}

.subject-nav-item.active {
  padding: 10px;
  background: linear-gradient(180deg, #fff8f2 0%, #ffffff 100%);
  border-color: #f7c9a8;
}

.subject-nav-button {
  width: 100%;
  border: 0;
  border-radius: 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 14px;
}

.subject-nav-item.active > .subject-nav-button {
  border-radius: 14px;
}

.nav-status,
.mini-status,
.status-text {
  color: var(--muted);
  font-size: 0.85rem;
}

.subject-nav-button .nav-status {
  color: rgba(255, 255, 255, 0.86);
}

.subject-nav-children {
  display: none;
  padding: 0 12px 12px;
}

.subject-nav-children.show {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.subject-nav-item.active > .subject-nav-children {
  padding: 12px 0 0;
}

.subject-child-button {
  width: 100%;
  min-height: 42px;
  padding: 0 12px;
  border-radius: 14px;
  justify-content: center;
}

.content-header {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: flex-start;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}

.resume-banner {
  margin-top: 16px;
  padding: 16px 18px;
  border: 1px solid #f7c9a8;
  border-radius: 16px;
  background: linear-gradient(135deg, #fff4eb 0%, #ffffff 100%);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 14px;
}

.resume-copy {
  min-width: 0;
}

.resume-kicker {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 0 10px;
  border-radius: 999px;
  background: rgba(242, 106, 33, 0.12);
  color: var(--primary-strong);
  font-size: 0.8rem;
  font-weight: 700;
}

.resume-copy h3 {
  margin: 10px 0 0;
  font-size: 1.15rem;
  line-height: 1.3;
}

.resume-copy p {
  margin: 8px 0 0;
  color: var(--muted);
  line-height: 1.6;
}

.resume-actions {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.summary-row,
.admin-summary {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
}

.summary-box {
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 14px;
  background: #fff;
}

.summary-box span {
  display: block;
  color: var(--muted);
  font-size: 0.88rem;
}

.summary-box strong {
  display: block;
  margin-top: 6px;
  font-size: 1.2rem;
}

.summary-box.wide {
  grid-column: 1 / -1;
}

.tab-strip {
  margin: 16px 0;
}

.tool-card-simple {
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 16px;
  background: #fff;
}

.tool-card-head {
  justify-content: space-between;
  align-items: center;
}

.bottom-note {
  margin-top: 16px;
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  align-items: center;
  color: var(--muted);
}

.mobile-only-inline {
  display: none;
}

.sidebar-mask {
  display: none;
}

@media (max-width: 900px) {
  .summary-row,
  .admin-summary {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 760px) {
  .auth-root,
  .workspace-root {
    width: min(100%, calc(100% - 16px));
  }

  .auth-root {
    min-height: 100dvh;
    padding: 8px 0;
  }

  .workspace-root {
    padding: 12px 0 24px;
  }

  .topbar-simple {
    align-items: flex-start;
    flex-direction: column;
  }

  .auth-page {
    gap: 16px;
    transform: translateY(-5vh);
  }

  .auth-head-row {
    gap: 12px;
  }

  .workspace-layout {
    grid-template-columns: 1fr;
  }

  .resume-banner {
    flex-direction: column;
    align-items: flex-start;
  }

  .resume-actions {
    width: 100%;
  }

  .resume-actions .primary-button {
    width: 100%;
  }

  .sidebar-simple {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: min(82vw, 300px);
    z-index: 20;
    transform: translateX(-110%);
    transition: transform 180ms ease;
    overflow-y: auto;
  }

  .sidebar-simple.is-open {
    transform: translateX(0);
  }

  .sidebar-mask {
    display: block;
    position: fixed;
    inset: 0;
    border: 0;
    background: rgba(17, 24, 39, 0.2);
    z-index: 10;
  }

  .mobile-only-inline {
    display: inline-flex;
  }

  .summary-row,
  .admin-summary {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 520px) {
  .auth-title-block h1,
  .topbar-simple h1,
  .content-header h2 {
    font-size: 1.55rem;
  }

  .auth-card {
    padding: 18px;
  }

  .auth-head-row {
    align-items: flex-start;
  }

  .auth-site-card {
    min-width: 138px;
    padding: 10px 12px;
  }

  .auth-site-card strong {
    font-size: 0.9rem;
    word-break: break-all;
  }

  .auth-site-card em {
    font-size: 0.78rem;
  }

  .summary-row,
  .admin-summary {
    grid-template-columns: 1fr;
  }

  .content-header {
    flex-direction: column;
  }
}