:root {
  --color-bg: #ffffff;
  --color-bg-alt: #f4f6fb;
  --color-text: #1c2333;
  --color-text-muted: #5a6478;
  --color-primary: #3b5bfd;
  --color-primary-dark: #2a45d6;
  --color-border: #e3e7f0;
  --color-danger: #d1354a;
  --radius: 12px;
  --max-width: 1080px;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --color-bg: #12141c;
    --color-bg-alt: #1a1e2b;
    --color-text: #e7eaf3;
    --color-text-muted: #9aa2b8;
    --color-primary: #7b93ff;
    --color-primary-dark: #97a9ff;
    --color-border: #2a2f40;
  }
}

:root[data-theme="dark"] {
  --color-bg: #12141c;
  --color-bg-alt: #1a1e2b;
  --color-text: #e7eaf3;
  --color-text-muted: #9aa2b8;
  --color-primary: #7b93ff;
  --color-primary-dark: #97a9ff;
  --color-border: #2a2f40;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.55;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

a { color: var(--color-primary); text-decoration: none; }
a:hover { text-decoration: underline; }

.site-header {
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  background: var(--color-bg);
  z-index: 10;
}
.header-inner {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 14px 20px;
}
.logo-block {
  display: flex;
  flex-direction: column;
  line-height: 1.25;
  text-decoration: none;
  flex-shrink: 0;
}
.logo { font-weight: 700; font-size: 1.2rem; color: var(--color-text); transition: color .15s; }
.logo-tagline { font-size: .78rem; font-weight: 400; color: var(--color-text-muted); }
.logo-block:hover { text-decoration: none; }
.logo-block:hover .logo { color: var(--color-primary); }
.site-search {
  display: flex;
  align-items: center;
  gap: 4px;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 4px 4px 4px 14px;
  margin-right: auto;
  width: 220px;
  max-width: 100%;
}
.site-search input {
  flex: 1;
  min-width: 0;
  border: none;
  background: none;
  color: var(--color-text);
  font: inherit;
  outline: none;
}
.site-search input::placeholder { color: var(--color-text-muted); }
.site-search button {
  border: none;
  background: none;
  cursor: pointer;
  padding: 6px 8px;
  font-size: 1rem;
  line-height: 1;
  border-radius: 8px;
  flex-shrink: 0;
}
.site-search button:hover { background: var(--color-border); }
.main-nav { display: flex; gap: 18px; }
.main-nav a { color: var(--color-text); font-weight: 500; transition: color .15s; }
.main-nav a:hover { color: var(--color-primary); text-decoration: none; }
.btn {
  display: inline-block;
  padding: 10px 18px;
  border-radius: var(--radius);
  font-weight: 600;
  border: none;
  cursor: pointer;
  font-size: 1rem;
}
.btn-primary {
  background: var(--color-primary);
  color: #fff !important;
  text-decoration: none;
}
.btn-primary:hover { background: var(--color-primary-dark); text-decoration: none; }
.btn-secondary {
  background: var(--color-bg-alt);
  color: var(--color-text) !important;
  border: 1px solid var(--color-border);
  text-decoration: none;
}
.btn-secondary:hover { text-decoration: none; border-color: var(--color-primary); }
.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  padding: 0;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  line-height: 1;
  flex-shrink: 0;
}
.theme-toggle {
  width: 40px;
  height: 40px;
  padding: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  line-height: 1;
  flex-shrink: 0;
}

.hero {
  background: var(--color-bg-alt);
  padding: 56px 0 44px;
  text-align: center;
}
.hero h1 { font-size: 2rem; margin: 0 0 12px; }
.hero-sub { color: var(--color-text-muted); max-width: 640px; margin: 0 auto 28px; }
.hero-search {
  display: flex;
  align-items: center;
  gap: 12px;
  max-width: 620px;
  margin: 0 auto;
}
.hero-search-field {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: 14px 20px;
  text-align: left;
}
.hero-search-icon { color: var(--color-text-muted); font-size: 1.05rem; flex-shrink: 0; }
.hero-search-field input {
  flex: 1;
  min-width: 0;
  border: none;
  background: none;
  font: inherit;
  color: var(--color-text);
  outline: none;
}
.hero-search-field input::placeholder { color: var(--color-text-muted); }
.hero-search button {
  background: var(--color-primary);
  color: #fff;
  border: none;
  border-radius: 999px;
  padding: 14px 32px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .03em;
  cursor: pointer;
  font-size: .9rem;
  white-space: nowrap;
  flex-shrink: 0;
}
.hero-search button:hover { background: var(--color-primary-dark); }
@media (max-width: 560px) {
  .hero-search { flex-direction: column; }
  .hero-search-field { width: 100%; }
  .hero-search button { width: 100%; }
}

.exam-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
  padding: 48px 20px;
}
.exam-card {
  display: block;
  padding: 24px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  color: var(--color-text) !important;
  text-decoration: none !important;
  transition: transform .15s ease, box-shadow .15s ease;
}
.exam-card:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,0,0,.08); }
.exam-card h2 { margin: 0 0 8px; }
.exam-card p { margin: 0; color: var(--color-text-muted); font-size: .95rem; }

.latest, .about { padding: 24px 20px 56px; }
.post-list { list-style: none; padding: 0; }
.post-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px 0;
  border-bottom: 1px solid var(--color-border);
}
.post-list a { font-weight: 500; }
.post-list-body { min-width: 0; flex: 1; }
.post-thumb {
  width: 56px;
  height: 56px;
  object-fit: cover;
  border-radius: 8px;
  flex-shrink: 0;
  background: var(--color-bg-alt);
}

.post-photo-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 4px;
  margin: 20px auto 0;
  max-width: var(--max-width);
  border-radius: var(--radius);
  overflow: hidden;
}
.post-photo-grid img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  display: block;
  background: var(--color-bg-alt);
}
@media (max-width: 560px) {
  .post-photo-grid { grid-template-columns: repeat(2, 1fr); }
}

.about h2 { margin-top: 0; }

.site-footer {
  border-top: 1px solid var(--color-border);
  padding: 40px 0 0;
  color: var(--color-text-muted);
  font-size: .9rem;
}
.footer-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 40px;
  padding-bottom: 32px;
}
.footer-about { flex: 2 1 260px; max-width: 360px; }
.footer-logo { font-weight: 700; font-size: 1.15rem; color: var(--color-text); margin-bottom: 10px; }
.footer-col { flex: 1 1 160px; }
.footer-col h3 {
  font-size: .78rem;
  letter-spacing: .04em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin: 0 0 14px;
  font-weight: 600;
}
.footer-nav { display: flex; flex-direction: column; gap: 10px; }
.footer-nav a { color: var(--color-text); transition: color .15s; }
.footer-nav a:hover { color: var(--color-primary); text-decoration: none; }
.footer-channel a { color: var(--color-primary); }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  border-top: 1px solid var(--color-border);
  padding: 18px 0;
}
@media (max-width: 640px) {
  .footer-grid { flex-direction: column; gap: 28px; }
  .footer-bottom { flex-direction: column; }
}

.topics-group { margin-bottom: 28px; }
.topics-group h2 { margin: 0 0 12px; font-size: 1.15rem; }
.topics-group h2 a { color: var(--color-text); }
.topics-group h2 a:hover { color: var(--color-primary); text-decoration: none; }
.topics-list { display: flex; flex-wrap: wrap; gap: 10px 20px; }
.topics-list a { color: var(--color-text-muted); transition: color .15s; }
.topics-list a:hover { color: var(--color-primary); text-decoration: none; }
.legal-page p { white-space: normal; }

.breadcrumbs {
  padding: 16px 20px 0;
  font-size: .9rem;
  color: var(--color-text-muted);
}
.breadcrumbs a { color: var(--color-text-muted); }

.page-title { padding: 20px 20px 0; }
.page-title h1 { margin-bottom: 6px; }
.page-lead { color: var(--color-text-muted); max-width: 720px; }
.post-views { color: var(--color-text-muted); font-size: .85rem; margin-top: 10px; }

.task-block {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 20px 24px;
  margin: 24px auto;
  width: calc(100% - 40px);
  max-width: 760px;
}
.task-block h3 { margin-top: 0; }
.post-body {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 20px 24px;
  margin: 24px auto;
  max-width: 760px;
}
.post-body h2 { margin: 24px 0 12px; }
.post-body h2:first-child { margin-top: 0; }
.post-body h3 { margin: 18px 0 10px; }
.task-condition {
  background: var(--color-bg-alt);
  padding: 14px 16px;
  border-radius: 8px;
  margin: 12px 0;
}
.task-answer {
  margin-top: 14px;
  padding: 12px 16px;
  border-left: 3px solid var(--color-primary);
  background: var(--color-bg-alt);
}
.task-answer strong { color: var(--color-primary-dark); }

.rich-content p { margin: 0 0 12px; }
.rich-content p:last-child { margin-bottom: 0; }
.rich-content ul, .rich-content ol { margin: 0 0 12px; padding-left: 22px; }
.rich-content li { margin-bottom: 4px; }
.rich-content a { text-decoration: underline; }
.rich-content blockquote {
  margin: 0 0 12px;
  padding-left: 12px;
  border-left: 3px solid var(--color-border);
  color: var(--color-text-muted);
}
.rich-content code {
  background: var(--color-border);
  padding: 2px 5px;
  border-radius: 4px;
  font-size: .9em;
}
.rich-content pre {
  background: var(--color-border);
  padding: 10px 12px;
  border-radius: 8px;
  overflow-x: auto;
}
.rich-content img {
  max-width: 100%;
  height: auto;
  border-radius: 8px;
  display: block;
  margin: 4px 0 12px;
}

.subject-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  padding: 8px 20px 48px;
}
.subject-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 18px;
  color: var(--color-text) !important;
  text-decoration: none !important;
}
.subject-card:hover { border-color: var(--color-primary); }

.inline-cta {
  margin: 32px auto;
  padding: 24px;
  background: var(--color-bg-alt);
  border-radius: var(--radius);
  text-align: center;
  max-width: 760px;
}
.inline-cta p { margin: 0 0 14px; color: var(--color-text-muted); }

@media (max-width: 640px) {
  .header-inner { flex-wrap: wrap; }
  .site-search { display: none; }
  .cta-tg { display: none; }
  .nav-toggle { display: inline-flex; margin-left: auto; }
  .main-nav {
    display: none;
    order: 3;
    width: 100%;
    flex-direction: column;
    gap: 0;
    margin-top: 4px;
    border-top: 1px solid var(--color-border);
  }
  .main-nav.open { display: flex; }
  .main-nav a {
    padding: 13px 4px;
    border-bottom: 1px solid var(--color-border);
  }
}

/* ---------- Auth pages ---------- */
.auth-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.auth-card {
  width: 100%;
  max-width: 380px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 32px;
}
.auth-card h1 { font-size: 1.4rem; margin-top: 0; }

/* ---------- Admin ---------- */
.admin-layout {
  display: flex;
  min-height: 100vh;
  align-items: stretch;
}
.admin-sidebar {
  width: 220px;
  flex: none;
  background: var(--color-bg-alt);
  border-right: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  padding: 20px 16px;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
}
.admin-logo {
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--color-text);
  margin-bottom: 24px;
  padding: 0 8px;
}
.admin-nav {
  display: flex;
  flex-direction: column;
  gap: 2px;
  flex: 1;
}
.admin-nav a {
  color: var(--color-text-muted);
  font-weight: 500;
  padding: 10px 12px;
  border-radius: 8px;
  text-decoration: none !important;
}
.admin-nav a:hover { background: var(--color-border); color: var(--color-text); }
.admin-nav a.active { background: var(--color-primary); color: #fff; }
.admin-sidebar-footer {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--color-border);
}
.admin-content {
  flex: 1;
  min-width: 0;
  padding: 24px 32px 60px;
}

@media (max-width: 768px) {
  .admin-layout { flex-direction: column; }
  .admin-sidebar {
    width: 100%;
    height: auto;
    position: static;
    flex-direction: row;
    align-items: center;
    overflow-x: auto;
    padding: 12px 16px;
  }
  .admin-logo { margin-bottom: 0; margin-right: 12px; white-space: nowrap; }
  .admin-nav { flex-direction: row; }
  .admin-nav a { white-space: nowrap; }
  .admin-sidebar-footer { flex-direction: row; margin-top: 0; margin-left: 12px; padding-top: 0; border-top: none; border-left: 1px solid var(--color-border); padding-left: 12px; }
  .admin-sidebar-footer a, .admin-sidebar-footer form { white-space: nowrap; }
  .admin-content { padding: 20px 16px 48px; }
}

.admin-main { padding: 24px 20px 60px; }
.admin-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 20px;
}
.admin-form { display: flex; flex-direction: column; gap: 16px; max-width: 640px; }
.admin-form label { display: flex; flex-direction: column; gap: 6px; font-weight: 600; font-size: .95rem; }
.admin-form input[type="text"],
.admin-form input[type="password"],
.admin-form select,
.admin-form textarea {
  font: inherit;
  padding: 10px 12px;
  border-radius: 8px;
  border: 1px solid var(--color-border);
  background: var(--color-bg);
  color: var(--color-text);
  font-weight: 400;
}
.admin-form textarea { resize: vertical; }
.checkbox-label { flex-direction: row !important; align-items: center; gap: 8px !important; }
.admin-form-actions { display: flex; gap: 12px; margin-top: 8px; }

.form-error {
  background: rgba(209, 53, 74, .1);
  color: var(--color-danger);
  padding: 10px 14px;
  border-radius: 8px;
  max-width: 640px;
}
.form-success {
  background: rgba(59, 91, 253, .1);
  color: var(--color-primary-dark);
  padding: 10px 14px;
  border-radius: 8px;
  max-width: 640px;
}

.table-scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; margin-bottom: 32px; }
.admin-table { width: 100%; min-width: 560px; border-collapse: collapse; margin-bottom: 0; }
.admin-table th, .admin-table td {
  text-align: left;
  padding: 10px 12px;
  border-bottom: 1px solid var(--color-border);
  font-size: .95rem;
}
.admin-row-actions { display: flex; gap: 14px; align-items: center; }
.admin-row-actions form { display: inline; }

.badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: .8rem;
  font-weight: 600;
}
.badge-live { background: rgba(46, 163, 89, .15); color: #2ea359; }
.badge-draft { background: rgba(154, 162, 184, .2); color: var(--color-text-muted); }

.link-danger {
  background: none;
  border: none;
  color: var(--color-danger);
  cursor: pointer;
  font: inherit;
  padding: 0;
  text-decoration: underline;
}

.photo-grid-edit {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(110px, 1fr));
  gap: 12px;
  margin-bottom: 16px;
}
.photo-edit-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 8px;
  text-align: center;
}
.photo-edit-item img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  border-radius: 8px;
  margin-bottom: 6px;
}
.photo-edit-item .checkbox-label { justify-content: center; font-size: .8rem; }

.task-edit-block {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 16px;
}
.rich-hidden { display: none; }

/* ---------- Редактор форматированного текста (Quill) ---------- */
.ql-toolbar.ql-snow {
  border-color: var(--color-border) !important;
  border-radius: 8px 8px 0 0;
  background: var(--color-bg-alt);
}
.ql-container.ql-snow {
  border-color: var(--color-border) !important;
  border-radius: 0 0 8px 8px;
  font-family: inherit;
  font-size: 1rem;
  background: var(--color-bg);
}
.ql-editor { color: var(--color-text); min-height: 90px; }
.rich-field-body .ql-editor { min-height: 360px; }
.ql-editor.ql-blank::before { color: var(--color-text-muted); font-style: normal; }
.ql-editor img { max-width: 100%; border-radius: 6px; }

.ql-snow .ql-stroke { stroke: var(--color-text-muted) !important; }
.ql-snow .ql-fill, .ql-snow .ql-stroke.ql-fill { fill: var(--color-text-muted) !important; }
.ql-snow .ql-picker { color: var(--color-text-muted) !important; }
.ql-snow .ql-picker-options {
  background: var(--color-bg-alt);
  border-color: var(--color-border) !important;
}

.ql-snow.ql-toolbar button:hover, .ql-snow .ql-toolbar button:hover,
.ql-snow.ql-toolbar button.ql-active, .ql-snow .ql-toolbar button.ql-active,
.ql-snow .ql-picker-label:hover, .ql-snow .ql-picker-label.ql-active {
  color: var(--color-primary) !important;
}
.ql-snow.ql-toolbar button:hover .ql-stroke, .ql-snow .ql-toolbar button:hover .ql-stroke,
.ql-snow.ql-toolbar button.ql-active .ql-stroke, .ql-snow .ql-toolbar button.ql-active .ql-stroke,
.ql-snow .ql-picker-label:hover .ql-stroke {
  stroke: var(--color-primary) !important;
}
.ql-snow.ql-toolbar button:hover .ql-fill, .ql-snow .ql-toolbar button:hover .ql-fill,
.ql-snow.ql-toolbar button.ql-active .ql-fill, .ql-snow .ql-toolbar button.ql-active .ql-fill {
  fill: var(--color-primary) !important;
}

.ql-snow .ql-tooltip {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  color: var(--color-text);
  box-shadow: 0 4px 16px rgba(0,0,0,.35);
}
.ql-snow .ql-tooltip input[type="text"] {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  color: var(--color-text);
}
.ql-snow .ql-tooltip a.ql-action, .ql-snow .ql-tooltip a.ql-remove { color: var(--color-primary); }