/* ================================================
   LINUX WIKI — CSS
   Тёмная / светлая тема + современный дизайн
   ================================================ */

/* === ПЕРЕМЕННЫЕ === */
:root {
  --accent: #7C3AED;
  --accent-2: #06B6D4;
  --accent-glow: rgba(124, 58, 237, 0.4);

  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;

  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --font-mono: 'JetBrains Mono', monospace;
  --font-sans: 'Inter', sans-serif;

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 4px 24px rgba(0, 0, 0, 0.3);
  --shadow-glow: 0 0 30px var(--accent-glow);


  /* СВЕТЛЫЕ ПЕРЕМЕННЫЕ */
  --bg: #F8FAFC;
    --bg-card: #FFFFFF;
    --bg-card-2: #F1F5F9;
    --bg-hover: #E2E8F0;
    --border: rgba(0, 0, 0, 0.08);
    --text: #0F172A;
    --text-muted: #64748B;
    --text-dim: #475569;
    --header-bg: rgba(248, 250, 252, 0.9);
    --terminal-bg: #1E1E2E;
    --terminal-prompt: #A855F7;
    --terminal-text: #67E8F9;
    --code-bg: rgba(124, 58, 237, 0.1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  transition: background var(--transition), color var(--transition);
  min-height: 100vh;
  overflow-x: hidden;
}

/* === УТИЛИТЫ === */
.gradient-text {
  background: var(--accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* === HEADER === */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1200;
  background: var(--header-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  transition: background var(--transition);
}

.header__inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 2rem;
  height: 64px;
  display: flex;
  align-items: center;
  gap: 2rem;
}

/* LOGO */
.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text);
  text-decoration: none;
  flex-shrink: 0;
}

.logo__icon {
  color: var(--accent);
  font-size: 1.3rem;
}

.logo__accent {
  color: var(--accent);
}

/* NAV */
.nav {
  display: flex;
  gap: 0.25rem;
  margin-left: auto;
}

.nav__link {
  padding: 0.4rem 0.9rem;
  border-radius: var(--radius-sm);
  color: var(--text-dim);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  transition: color var(--transition), background var(--transition);
}

.nav__link:hover {
  color: var(--text);
  background: var(--bg-hover);
}

.nav__link.active {
  color: var(--accent);
  background: var(--code-bg);
}

/* HEADER CONTROLS */
.header__controls {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

/* THEME BUTTON */
.theme-btn {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--bg-card-2);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.theme-btn:hover {
  border-color: var(--accent);
  box-shadow: 0 0 12px var(--accent-glow);
}

.theme-btn__icon {
  position: absolute;
  transition: all var(--transition);
}

[data-theme="dark"] .theme-btn__sun {
  opacity: 0;
  transform: translateY(20px);
}

[data-theme="dark"] .theme-btn__moon {
  opacity: 1;
  transform: translateY(0);
}

[data-theme="light"] .theme-btn__sun {
  opacity: 1;
  transform: translateY(0);
}

[data-theme="light"] .theme-btn__moon {
  opacity: 0;
  transform: translateY(-20px);
}

/* BURGER */
.burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 40px;
  height: 40px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-card-2);
  cursor: pointer;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
}

.burger span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: all var(--transition);
}

.burger:hover {
  border-color: var(--accent);
}

/* MOBILE NAV */
.mobile-nav {
  position: fixed;
  top: 64px;
  left: 0;
  right: 0;
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  z-index: 1100;
  transform: translateY(-100%);
  opacity: 0;
  transition: all var(--transition);
  pointer-events: none;
}

.mobile-nav.open {
  transform: translateY(0);
  opacity: 1;
  pointer-events: all;
}

.mobile-nav__link {
  position: relative;
  z-index: 1110;
  padding: 0.7rem 1rem;
  border-radius: var(--radius-sm);
  color: var(--text-dim);
  text-decoration: none;
  font-weight: 500;
  transition: all var(--transition);
}

.mobile-nav__link:hover {
  color: var(--text);
  background: var(--bg-hover);
}

/* === MAIN === */
.main {
  padding-top: 64px;
}

/* === SECTIONS === */
.section {
  max-width: 1280px;
  margin: 0 auto;
  padding: 5rem 2rem;
}

.section__header {
  text-align: center;
  margin-bottom: 3rem;
}

.section__title {
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.section__sub {
  color: var(--text-muted);
  font-size: 1.05rem;
}

/* === HERO === */
.hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  padding-top: 6rem;
  padding-bottom: 6rem;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.9rem;
  border-radius: 999px;
  border: 1px solid var(--accent);
  background: var(--code-bg);
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  margin-bottom: 1.5rem;
}

.badge__dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  animation: pulse 2s infinite;
}

@keyframes pulse {

  0%,
  100% {
    opacity: 1;
    box-shadow: 0 0 0 0 var(--accent-glow);
  }

  50% {
    opacity: 0.7;
    box-shadow: 0 0 0 6px transparent;
  }
}

.hero__title {
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: 1.25rem;
}

.hero__desc {
  font-size: 1.1rem;
  color: var(--text-dim);
  line-height: 1.7;
  margin-bottom: 2rem;
  max-width: 480px;
}

.hero__actions {
  display: flex;
  gap: 1rem;
  margin-bottom: 3rem;
}

/* BUTTONS */
.btn {
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all var(--transition);
}

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

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
}

.btn--ghost {
  background: transparent;
  color: var(--text-dim);
  border: 1px solid var(--border);
}

.btn--ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--code-bg);
}

/* STATS */
.hero__stats {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.stat {
  text-align: center;
}

.stat__num {
  display: block;
  font-size: 1.8rem;
  font-weight: 700;
  font-family: var(--font-mono);
  color: var(--accent);
}

.stat__label {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.stat__divider {
  width: 1px;
  height: 40px;
  background: var(--border);
}

/* === TERMINAL === */
.terminal {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md), 0 0 60px rgba(124, 58, 237, 0.15);
  border: 1px solid var(--border);
}

.terminal__bar {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1rem;
  background: var(--bg-card-2);
  border-bottom: 1px solid var(--border);
}

.terminal__dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.terminal__dot--red {
  background: #FF5F56;
}

.terminal__dot--yellow {
  background: #FFBD2E;
}

.terminal__dot--green {
  background: #27C93F;
}

.terminal__title {
  flex: 1;
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.terminal__body {
  background: var(--terminal-bg);
  padding: 1.25rem 1.5rem;
  min-height: 200px;
  font-family: var(--font-mono);
  font-size: 0.9rem;
}

.terminal__line {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
}

.terminal__prompt {
  color: var(--terminal-prompt);
  font-weight: 600;
}

.terminal__cmd {
  color: var(--terminal-text);
}

.terminal__cursor {
  color: var(--terminal-text);
  animation: blink 1s infinite;
}

@keyframes blink {

  0%,
  100% {
    opacity: 1;
  }

  50% {
    opacity: 0;
  }
}

.terminal__output {
  color: #94A3B8;
  font-size: 0.85rem;
  line-height: 1.7;
}

.terminal__output p {
  margin-bottom: 0.25rem;
}

.terminal__output .ok {
  color: #4ADE80;
}

.terminal__output .warn {
  color: #FBBF24;
}

.terminal__output .err {
  color: #F87171;
}

/* === TOPICS GRID === */
.topics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
}

.topic-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  transition: all var(--transition);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.topic-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--accent);
  opacity: 0;
  transition: opacity var(--transition);
}

.topic-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--accent);
}

.topic-card:hover::before {
  opacity: 1;
}

.topic-card--locked {
  opacity: 0.4;
  cursor: not-allowed;
}

.topic-card--locked:hover {
  transform: none;
  box-shadow: none;
  border-color: var(--border);
}

.topic-card__icon {
  font-size: 2rem;
  margin-bottom: 1rem;
}

.topic-card__title {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.topic-card__desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 1.25rem;
}

.progress-bar {
  height: 6px;
  border-radius: 999px;
  background: var(--bg-hover);
  overflow: hidden;
  margin-bottom: 0.4rem;
}

.progress-bar__fill {
  height: 100%;
  border-radius: 999px;
  background: var(--accent);
  transition: width 1s ease;
}

.progress-bar__label {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

/* === EXERCISES === */
.exercises-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.exercise-placeholder {
  background: var(--bg-card);
  border: 2px dashed var(--border);
  border-radius: var(--radius-lg);
  padding: 4rem 2rem;
  text-align: center;
}

.exercise-placeholder__icon {
  font-size: 3rem;
  margin-bottom: 1rem;
}

.exercise-placeholder h3 {
  font-size: 1.2rem;
  margin-bottom: 0.5rem;
}

.exercise-placeholder p {
  color: var(--text-muted);
}

/* === CHEATSHEET === */

/* ПОИСК ПО ШПАРГАЛКЕ */
.cheatsheet__search-wrap {
  display: flex;
  align-items: center;
  gap: 0;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  margin-bottom: 1rem;
  overflow: hidden;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.cheatsheet__search-wrap:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.cheatsheet__search-icon {
  padding: 0 0.75rem 0 1rem;
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--accent);
  font-size: 1rem;
  flex-shrink: 0;
}

.cheatsheet__search {
  flex: 1;
  border: none;
  outline: none;
  background: transparent;
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 0.92rem;
  padding: 0.75rem 0.5rem;
}

.cheatsheet__search::placeholder {
  color: var(--text-muted);
}

.cheatsheet__search-clear {
  padding: 0 0.9rem;
  color: var(--text-muted);
  font-size: 0.8rem;
  cursor: pointer;
  transition: color var(--transition);
  display: none;
  flex-shrink: 0;
}

.cheatsheet__search-clear:hover {
  color: var(--accent);
}

.cheatsheet__search-clear.visible {
  display: block;
}

/* Результаты поиска по шпаргалке */
.cheatsheet__search-hint {
  text-align: center;
  color: var(--text-muted);
  font-size: 0.9rem;
  padding: 2.5rem 1rem;
  font-family: var(--font-mono);
}

.cheatsheet__categories {
  display: flex;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
  flex-wrap: nowrap; /* Не переносить на мобильных */
  overflow-x: auto; /* Прокрутка если не влезает */
  padding-bottom: 0.5rem;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none; /* Firefox */
}

.cheatsheet__categories::-webkit-scrollbar {
  display: none; /* Chrome/Safari */
}

.cat-btn {
  padding: 0.4rem 1rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text-muted);
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
}

.cat-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.cat-btn.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.cheatsheet__table-wrap {
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  overflow: hidden;
}

.cmd-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.cmd-table thead {
  background: var(--bg-card-2);
}

.cmd-table th {
  padding: 0.9rem 1.25rem;
  text-align: left;
  font-weight: 600;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
}

.cmd-table td {
  padding: 0.85rem 1.25rem;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}

.cmd-table tbody tr {
  background: var(--bg-card);
  transition: background var(--transition);
}

.cmd-table tbody tr:hover {
  background: var(--bg-hover);
}

.cmd-table tbody tr:last-child td {
  border-bottom: none;
}

.cmd-table__empty {
  text-align: center;
  color: var(--text-muted);
  padding: 3rem !important;
}

.cmd-name {
  font-family: var(--font-mono);
  background: var(--code-bg);
  color: var(--accent);
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  white-space: nowrap;
}

.cmd-example {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-dim);
}

.cmd-badge {
  display: inline-block;
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.cmd-badge--files {
  background: rgba(16, 185, 129, 0.15);
  color: #10B981;
}

.cmd-badge--process {
  background: rgba(249, 115, 22, 0.15);
  color: #F97316;
}

.cmd-badge--network {
  background: rgba(59, 130, 246, 0.15);
  color: #3B82F6;
}

.cmd-badge--system {
  background: rgba(168, 85, 247, 0.15);
  color: #A855F7;
}

/* === ABOUT === */
.about {
  display: flex;
  gap: 4rem;
  align-items: center;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 3rem;
}

.about__avatar {
  flex-shrink: 0;
}

.avatar-ring {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  padding: 3px;
  background: var(--accent);
}

.avatar-placeholder {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background: var(--bg-card-2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
}

.about__title {
  font-size: 1.8rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.about__text {
  color: var(--text-dim);
  line-height: 1.7;
  margin-bottom: 0.75rem;
}

.about__tags {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-top: 1.5rem;
}

.tag {
  padding: 0.3rem 0.8rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--code-bg);
  color: var(--accent);
  font-size: 0.82rem;
  font-weight: 500;
  font-family: var(--font-mono);
}

/* === FOOTER === */
.footer {
  border-top: 1px solid var(--border);
  background: var(--bg-card);
}

.footer__inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 1.5rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer__copy {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.footer__copy code {
  font-family: var(--font-mono);
  background: var(--code-bg);
  padding: 0.1rem 0.4rem;
  border-radius: var(--radius-sm);
  color: var(--accent);
}

.footer__date {
  color: var(--text-muted);
  font-size: 0.85rem;
  font-family: var(--font-mono);
}

/* === SCROLLBAR === */
::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: var(--bg);
}

::-webkit-scrollbar-thumb {
  background: var(--accent);
  border-radius: 3px;
}

/* === RESPONSIVE === */
@media (max-width: 900px) {
  .hero {
    grid-template-columns: 1fr;
  }

  .hero__terminal {
    display: none;
  }

  .hero__desc {
    max-width: 100%;
  }

  .nav {
    display: none;
  }

  .burger {
    display: flex;
  }

  .about {
    flex-direction: column;
    gap: 2rem;
    text-align: center;
  }

  .about__tags {
    justify-content: center;
  }

  .footer__inner {
    flex-direction: column;
    gap: 0.5rem;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .section {
    padding: 3rem 1.25rem;
  }

  .header__inner {
    padding: 0 1.25rem;
  }

  .hero__actions {
    flex-direction: column;
  }

  .hero__stats {
    gap: 1rem;
  }
}

/* === ПОИСК === */
.search-wrap {
  position: relative;
  display: flex;
  align-items: center;
}

.search-toggle {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--bg-card-2);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  color: var(--text-muted);
  transition: all var(--transition);
  flex-shrink: 0;
}

.search-toggle:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.search-field {
  position: absolute;
  right: 46px;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  align-items: center;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  width: 0;
  opacity: 0;
  pointer-events: none;
  transition: all var(--transition);
  white-space: nowrap;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.search-wrap.open .search-field {
  width: 260px;
  opacity: 1;
  pointer-events: all;
}

.search-field__icon {
  padding: 0 0.6rem;
  color: var(--text-muted);
  font-size: 0.9rem;
  flex-shrink: 0;
}

#searchInput {
  flex: 1;
  border: none;
  outline: none;
  background: transparent;
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 0.88rem;
  padding: 0.6rem 0.75rem 0.6rem 0;
}

#searchInput::placeholder {
  color: var(--text-muted);
}

/* DROPDOWN РЕЗУЛЬТАТОВ */
.search-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  width: 380px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  z-index: 200;
  overflow: hidden;
  display: none;
}

.search-dropdown.visible {
  display: block;
}

.search-result {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.7rem 1rem;
  text-decoration: none;
  color: var(--text);
  border-bottom: 1px solid var(--border);
  transition: background var(--transition);
}

.search-result:last-child {
  border-bottom: none;
}

.search-result:hover,
.search-result--active {
  background: var(--bg-hover);
}

.search-result__icon {
  font-size: 1rem;
  flex-shrink: 0;
  width: 24px;
  text-align: center;
}

.search-result__dollar {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--accent);
  font-size: 0.9rem;
}

.search-result__body {
  flex: 1;
  min-width: 0;
}

.search-result__title {
  display: block;
  font-size: 0.9rem;
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.search-result__sub {
  display: block;
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 0.1rem;
}

.search-result__badge {
  font-size: 0.7rem;
  font-weight: 600;
  padding: 0.15rem 0.5rem;
  border-radius: 999px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  flex-shrink: 0;
}

.search-result__badge--purple {
  background: rgba(124, 58, 237, 0.15);
  color: #A78BFA;
}

.search-result__badge--blue {
  background: rgba(59, 130, 246, 0.15);
  color: #60A5FA;
}

.search-result__badge--gray {
  background: rgba(148, 163, 184, 0.15);
  color: #94A3B8;
}

.search-result__badge--orange {
  background: rgba(249, 115, 22, 0.15);
  color: #FB923C;
}

/* === EXERCISE CARDS (секция упражнений на главной) === */

.ex-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.ex-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--accent);
}

.ex-card--locked {
  opacity: 0.55;
  pointer-events: none;
}

/* Шапка карточки — тема */
.ex-card__topic {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.75rem 1.25rem;
  background: var(--accent);
}

.ex-card__topic-num {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: rgba(255, 255, 255, 0.7);
  white-space: nowrap;
}

.ex-card__topic-name {
  font-size: 0.88rem;
  font-weight: 600;
  color: #fff;
}

/* Список упражнений */
.ex-card__body {
  padding: 1rem 1.25rem;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  max-height: 230px;
  overflow-y: auto;
}

/* Стилизация скроллбара для красоты */
.ex-card__body::-webkit-scrollbar {
  width: 6px;
}

.ex-card__body::-webkit-scrollbar-track {
  background: transparent;
}

.ex-card__body::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 4px;
}

.ex-card__body::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

.ex-card__body--empty {
  align-items: center;
  justify-content: center;
  text-align: center;
  color: var(--text-muted);
  padding: 2rem 1.25rem;
  gap: 0.5rem;
}

.ex-card__lock {
  font-size: 2rem;
}

.ex-card__item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 0.6rem 0.75rem;
  background: var(--bg-card-2);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  transition: border-color var(--transition);
}

.ex-card__item:hover {
  border-color: var(--accent);
}

.ex-card__item-num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--accent);
  flex-shrink: 0;
  background: var(--code-bg);
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
  margin-top: 0.1rem;
}

.ex-card__item>div {
  flex: 1;
  min-width: 0;
}

.ex-card__item strong {
  display: block;
  font-size: 0.88rem;
  font-weight: 600;
  margin-bottom: 0.15rem;
}

.ex-card__item p {
  font-size: 0.78rem;
  color: var(--text-muted);
  line-height: 1.4;
  margin: 0;
}

.ex-card__level {
  font-size: 0.68rem;
  font-weight: 700;
  padding: 0.15rem 0.5rem;
  border-radius: 999px;
  white-space: nowrap;
  flex-shrink: 0;
  align-self: flex-start;
  margin-top: 0.15rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.ex-card__level--green {
  background: rgba(16, 185, 129, 0.15);
  color: #10B981;
}

.ex-card__level--orange {
  background: rgba(249, 115, 22, 0.15);
  color: #F97316;
}

.ex-card__level--red {
  background: rgba(239, 68, 68, 0.15);
  color: #F87171;
}

/* Кнопка перехода к упражнениям */
.ex-card__btn {
  display: block;
  text-align: center;
  padding: 0.8rem;
  background: var(--bg-card-2);
  border-top: 1px solid var(--border);
  color: var(--accent);
  font-size: 0.88rem;
  font-weight: 600;
  text-decoration: none;
  transition: all var(--transition);
  letter-spacing: 0.02em;
}

.ex-card__btn:hover {
  background: var(--accent);
  color: #fff;
}

/* === СЕКЦИЯ РЕСУРСОВ === */
.resources-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.25rem;
}

.resource-card {
  display: flex;
  flex-direction: column;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  text-decoration: none;
  color: var(--text);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.resource-card::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--accent);
  transform: scaleX(0);
  transition: transform var(--transition);
  transform-origin: left;
}

.resource-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--accent);
}

.resource-card:hover::after {
  transform: scaleX(1);
}

.resource-card__header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
}

.resource-card__icon {
  font-size: 1.75rem;
}

.resource-card__level {
  margin-left: auto;
  font-size: 0.72rem;
  font-weight: 600;
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
}

.resource-card__level--beginner {
  background: rgba(16, 185, 129, 0.15);
  color: #10B981;
}

.resource-card__level--mid {
  background: rgba(249, 115, 22, 0.15);
  color: #F97316;
}

.resource-card__level--advanced {
  background: rgba(239, 68, 68, 0.15);
  color: #F87171;
}

.resource-card__title {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.4rem;
}

.resource-card__desc {
  font-size: 0.87rem;
  color: var(--text-muted);
  line-height: 1.55;
  flex: 1;
}

.resource-card__url {
  margin-top: 0.9rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

@media (max-width: 600px) {
  .search-wrap.open .search-field {
    position: absolute;
    right: 44px;
    left: auto;
    top: 50%;
    transform: translateY(-50%);
    width: 180px;
    opacity: 1 !important;
    pointer-events: all !important;
    display: flex !important;
    z-index: 100;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    border: 1px solid var(--border);
  }
  
  #searchInput, input, textarea, select {
    font-size: 16px !important; /* Предотвращает автозум на iOS */
  }

  body {
    overflow-x: hidden !important;
  }

  .search-dropdown {
    position: fixed;
    top: 64px;
    left: 10px;
    right: 10px;
    width: auto;
    max-width: none;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 0 0 var(--radius-md) var(--radius-md);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
    padding: 0.5rem;
    z-index: 1300;
    overflow: hidden;
  }
}
/* === ДОПОЛНИТЕЛЬНАЯ МОБИЛЬНАЯ ОПТИМИЗАЦИЯ === */
@media (max-width: 900px) {
  .hero {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 3rem;
    padding-top: 4rem;
  }

  .hero__desc {
    margin-left: auto;
    margin-right: auto;
  }

  .hero__actions {
    justify-content: center;
  }

  .hero__stats {
    justify-content: center;
  }

  .nav {
    display: none;
  }

  .burger {
    display: flex;
  }
}

@media (max-width: 600px) {
  .section {
    padding: 4rem 1.25rem;
  }

  .hero__title {
    font-size: 2.5rem;
  }

  .hero__actions {
    flex-direction: column;
    width: 100%;
  }

  .btn {
    width: 100%;
    text-align: center;
  }

  .hero__stats {
    flex-wrap: wrap;
    gap: 1rem;
  }

  .stat__divider {
    display: none;
  }

  .stat {
    flex: 1 1 40%;
  }

  .topics-grid {
    grid-template-columns: 1fr;
  }

  .cmd-table thead {
    display: none; /* Скрываем заголовок таблицы */
  }

  .cmd-table tbody tr {
    display: block;
    border-bottom: 1px solid var(--border);
    cursor: pointer;
    transition: background 0.2s;
  }

  .cmd-table tbody tr:hover {
    background: var(--bg-card-2);
  }

  .cmd-table td {
    display: block;
    border: none !important;
    padding: 0.5rem 1rem;
    width: 100% !important;
  }

  /* Скрываем всё кроме названия команды по умолчанию */
  .cmd-table td:nth-child(2),
  .cmd-table td:nth-child(3),
  .cmd-table td:nth-child(4) {
    display: none;
    padding-top: 0;
    padding-bottom: 0.75rem;
    font-size: 0.85rem;
  }

  /* Показываем при разворачивании */
  .cmd-table tr.is-expanded td:nth-child(2),
  .cmd-table tr.is-expanded td:nth-child(3) {
    display: block;
  }

  .cmd-table td:first-child {
    position: relative;
    padding-right: 3rem;
    padding-top: 1rem;
    padding-bottom: 1rem;
  }

  /* Индикатор разворачивания */
  .cmd-table td:first-child::after {
    content: '→';
    position: absolute;
    right: 1.25rem;
    top: 50%;
    transform: translateY(-50%);
    font-size: 0.9rem;
    color: var(--accent);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  }

  .cmd-table tr.is-expanded td:first-child::after {
    transform: translateY(-50%) rotate(90deg);
  }

  .cmd-name {
    font-size: 0.9rem;
    padding: 0.25rem 0.6rem;
  }

  .cmd-example {
    display: block;
    background: var(--code-bg);
    padding: 0.5rem;
    border-radius: var(--radius-sm);
    margin-top: 0.5rem;
    font-size: 0.8rem;
    border-left: 2px solid var(--accent);
  }
}
@media (max-width: 600px) {
  .cheatsheet__search-wrap {
    margin-bottom: 0.75rem;
  }
  
  .cheatsheet__search-icon {
    padding: 0 0.5rem 0 0.75rem;
    font-size: 0.9rem;
  }
  
  .cheatsheet__search {
    padding: 0.6rem 0.5rem;
    font-size: 16px !important; /* Предотвращает автозум на iOS */
  }
}