:root {
  /* Цветовая палитра 2025: мягкая, дружелюбная */
  --main-bg: #f8fafc;
  --main-bg-alt: #f2f4ff;
  --block-bg: #fff;
  --accent: #82adee;
  --accent-2: #ffcfa7;
  --accent-3: #ccffd5;
  --accent-4: #f5a3ae;
  --font-main: #222c3e;
  --font-muted: #8d90a4;
  --border-soft: #eceff4;
  --admin: #fff4c2;
  --success: #bae9c7;
  --danger: #ffd6d6;
  --nav-height: 62px;
  --shadow-main: 0 4px 28px 0 rgba(130, 150, 240, 0.08);
}

/* Общий фон, font, масштаб */
body {
  background: var(--main-bg);
  color: var(--font-main);
  font-family: 'Nunito', 'Segoe UI', Arial, sans-serif;
  margin: 0;
  min-height: 100vh;
  font-size: 1.14em;
}

/* Логотип */
.logo {
  font-weight: 900;
  font-size: 1.6rem;
  letter-spacing: 0.04em;
  color: var(--accent);
  margin-right: 1em;
  padding-left: 3px;
}

/* Навигация */
#navbar {
  background: var(--main-bg-alt);
  box-shadow: var(--shadow-main);
  padding: 10px 0;
  position: sticky;
  top: 0;
  z-index: 99;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: var(--nav-height);
}

#nav-links {
  list-style: none;
  display: flex;
  gap: 1.1em;
  margin: 0;
  padding: 0;
}
#nav-links a {
  text-decoration: none;
  color: var(--font-main);
  font-weight: 600;
  border-radius: 22px;
  padding: 9px 18px;
  transition: background 0.18s, color 0.13s;
  font-size: 1.06em;
}
#nav-links a:hover,
#nav-links a.active {
  background: var(--accent-3);
  color: var(--accent);
}
#nav-links a.active {
  box-shadow: 0 2px 12px #82adee10;
}
#nav-links a:focus-visible {
  background: var(--accent-4);
  color: #fff;
  outline: none;
}

/* User bar */
#user-bar {
  display: flex;
  align-items: center;
  gap: .7em;
}
#user-bar button {
  border: none;
  background: var(--accent);
  color: #fff;
  border-radius: 17px;
  padding: 8px 15px;
  margin: 0 2px;
  transition: background .18s, color .13s;
  box-shadow: 0 1px 6px #edeffc80;
  font-weight: 700;
  outline: none;
  cursor: pointer;
}
#user-bar button:active,
#user-bar button:focus {
  outline: 2px solid var(--accent-4);
  background: var(--accent-2);
  color: #222c3e;
}
#user-bar button:hover {
  background: var(--accent-2);
  color: #222c3e;
}

#user-info {
  font-weight: 700;
  color: var(--accent);
  font-size: 1.15em;
  margin-right: 13px;
}
#user-status-indicator {
  margin-left: 8px;
  font-size: 1em;
  display: inline-flex;
  align-items: center;
}
.status-dot {
  width: 13px;
  height: 13px;
  border-radius: 50%;
  margin-right: 7px;
  display: inline-block;
  vertical-align: middle;
  box-shadow: 0 1px 2px #bbb9;
}
.status-guest { background: #bfc5d0; }
.status-user  { background: #7dcd95; }
.status-admin { background: #ffd72d; border:2px solid #ffa70a; }

/* Основной контейнер */
main {
  margin: 0 auto;
  max-width: 680px;
  padding: clamp(10px, 4vw, 38px);
}

/* Секции/карточки */
.page-section {
  background: var(--block-bg);
  border-radius: 15px;
  box-shadow: var(--shadow-main);
  margin-bottom: 35px;
  padding: 25px 16px 34px 16px;
  transition: background .14s;
}

h2 {
  font-weight: 900;
  font-size: 1.45em;
  margin-bottom: 21px;
  color: var(--accent);
  letter-spacing: 0.01em;
}

/* Формы */
input, textarea {
  width: 100%;
  border: 1.5px solid var(--border-soft);
  border-radius: 11px;
  padding: 11px;
  font-size: 1.06em;
  margin-top: 7px;
  margin-bottom: 19px;
  background: #fafdff;
  transition: border .15s;
}
textarea {
  resize: vertical;
  min-height: 70px;
  max-height: 300px;
}
input:focus, textarea:focus {
  border-color: var(--accent);
  outline: none;
}

/* Списки и карточки */
#question-list, #answers-list, #search-results, #admin-content table {
  margin-top: 1em;
  overflow-x: auto;
}
.q-card, .a-card {
  background: var(--main-bg-alt);
  border-radius: 14px;
  box-shadow: 0 2px 10px #edeffc80;
  margin-bottom: 14px;
  padding: 16px 13px 15px 13px;
  position: relative;
  transition: background .13s, box-shadow .15s;
  font-size: 1.03em;
}
.q-card:hover, .a-card:hover,
.q-card:focus-within, .a-card:focus-within {
  background: #f4f9ff;
  box-shadow: 0 2px 19px #b3d6fc55;
}
.q-card:active, .a-card:active {
  background: #e8f6ff;
}
.q-card .tags, .a-card .tags {
  font-size: .99em;
  color: var(--accent-4);
  margin-top: 7px;
}
.q-card .author, .a-card .author {
  font-size: .94em;
  color: var(--font-muted);
}

/* Иконки-кнопки на карточках */
.q-card .edit-btn, .a-card .edit-btn,
.q-card .delete-btn, .a-card .delete-btn {
  background: none;
  border: none;
  font-size: 1.23em;
  cursor: pointer;
  outline: none;
  transition: color .15s;
}
.q-card .edit-btn, .a-card .edit-btn {
  position: absolute;
  top: 10px; right: 11px;
  color: var(--accent);
}
.q-card .edit-btn:focus, .q-card .edit-btn:active,
.a-card .edit-btn:focus, .a-card .edit-btn:active {
  color: #367bbd !important;
  outline: none;
}
.q-card .delete-btn, .a-card .delete-btn {
  position: absolute;
  top: 10px; right: 46px;
  color: #f65959;
}
.q-card .delete-btn:focus, .q-card .delete-btn:active,
.a-card .delete-btn:focus, .a-card .delete-btn:active {
  color: #b02525 !important;
  outline: none;
}

/* Кнопки */
button, .btn {
  font-weight: 700;
  border-radius: 14px !important;
  padding: 11px 23px !important;
  font-size: 1.11em !important;
  transition: background .16s, color .11s;
  box-shadow: 0 1px 5px #edeffc98;
  outline: none;
  cursor: pointer;
}
button:focus, .btn:focus {
  outline: 2px solid var(--accent-4);
}

/* Современная специальная кнопка поиска */
.btn-modern {
  border-radius: 1.5em !important;
  font-weight: 600;
  font-size: 1.1em;
  letter-spacing: 0.01em;
  padding: 0.58em 1.5em;
  box-shadow: 0 2px 8px rgba(23,234,255,0.10);
  background: linear-gradient(90deg, #17eaff 60%, #0ec1e9 100%);
  color: #222;
  border: none;
  transition: background 0.22s, color 0.22s, box-shadow 0.15s;
}
.btn-modern:hover, .btn-modern:focus {
  background: linear-gradient(90deg, #12c6d8 60%, #0c8bad 100%);
  color: #fff;
  box-shadow: 0 4px 18px rgba(23,234,255,0.15);
}

/* Облака тегов и ссылки */
#tag-cloud {
  margin: 16px 0;
}
#ask-link {
  margin-top: 1em;
}
.admin-hint {
  font-size: 0.95em;
  color: #888;
}

/* Уведомления */
#notify {
  position: fixed;
  left: 50%;
  bottom: 24px;
  transform: translateX(-50%);
  background: var(--accent);
  color: #fff;
  padding: 15px 26px;
  border-radius: 14px;
  font-weight: 700;
  font-size: 1.05em;
  box-shadow: 0 2px 11px #edeffcbb;
  z-index: 9995;
  letter-spacing: 0.01em;
  transition: opacity .27s;
  opacity: 1;
  pointer-events: none;
}
#notify[style*="display: none"], #notify.visually-hidden {
  opacity: 0 !important;
  display: none !important;
}
#notify.error {
  background: var(--danger);
  color: #bb3a3a;
}
#notify.success {
  background: var(--success);
  color: #186818;
}

/* Админ-панель */
#admin-panel {
  background: var(--admin);
  border: 2px dashed var(--accent-2);
  padding: 29px 17px;
}
#admin-tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 18px;
  flex-wrap: wrap;
}
.admin-tab-btn {
  background: var(--accent-2);
  color: var(--font-main);
  font-weight: 700;
  border: none;
  border-radius: 10px;
  padding: 9px 16px;
  cursor: pointer;
  transition: background .13s, color .1s;
  font-size: 1.01em;
  outline: none;
}
.admin-tab-btn.active {
  background: var(--accent);
  color: #fff;
}
.admin-tab-btn:focus-visible {
  outline: 2px solid var(--accent-4);
}
#admin-content {
  margin-top: 16px;
  background: #fff9ef;
  border-radius: 8px;
  box-shadow: 0 1px 7px #edeffa63;
  padding: 13px 8px 13px 8px;
}

/* Скрытие секций через hidden */
[hidden] { display: none !important; }

/* Медиа-адаптация */
@media (max-width: 650px) {
  :root {
    --nav-height: 56px;
  }
  main {
    max-width: 100vw;
    padding: 5vw 3vw 2vw 3vw;
  }
  .page-section {
    padding: 13px 2vw 17px 2vw;
    margin-bottom: 15px;
    font-size: 1.07em;
  }
  #user-bar button {
    padding: 7px 9px;
    font-size: 0.99em;
  }
  .logo { font-size: 1.15rem;}
  h2 { font-size: 1.13em;}
}
@media (max-width: 470px) {
  #navbar {
    flex-direction: column;
    align-items: flex-start;
    padding: 6px 2vw;
    font-size: 1em;
    gap: 7px;
  }
  .logo {
    margin-bottom: 3px;
    font-size: 1.03em;
  }
  #nav-links {
    gap: .7em;
    margin-bottom: 3px;
  }
}
@media (orientation: landscape) and (max-width: 950px) {
  body, input, textarea, button {
    font-size: 0.99em;
  }
  main { max-width: 97vw; }
}
@media (min-width: 650px) and (max-width: 1100px) {
  main {
    max-width: 92vw;
  }
}