/* ============================================================
   Tools — общие стили
   Палитра: нейтральные оттенки серого
   ============================================================ */

/* ---------- Переменные темы ---------- */
:root {
  --bg: #f5f5f5;
  --bg-elevated: #ffffff;
  --bg-subtle: #fafafa;
  --bg-hover: #efefef;
  --bg-active: #e5e5e5;
  --bg-inset: #f7f7f7;

  --fg: #171717;
  --fg-muted: #737373;
  --fg-subtle: #a3a3a3;

  --border: #e5e5e5;
  --border-strong: #d4d4d4;

  --primary: #262626;
  --primary-fg: #fafafa;
  --primary-hover: #404040;

  --accent: #525252;
  --danger: #a3a3a3;

  --ring: rgba(38, 38, 38, 0.18);
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.06);
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.08), 0 1px 2px rgba(0, 0, 0, 0.04);

  --radius: 10px;
  --radius-sm: 8px;
  --radius-lg: 14px;

  --font-sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas,
    "Liberation Mono", monospace;

  color-scheme: light;
}

[data-theme="dark"] {
  --bg: #0d0d0d;
  --bg-elevated: #151515;
  --bg-subtle: #1a1a1a;
  --bg-hover: #212121;
  --bg-active: #2a2a2a;
  --bg-inset: #111111;

  --fg: #f5f5f5;
  --fg-muted: #a3a3a3;
  --fg-subtle: #737373;

  --border: #262626;
  --border-strong: #383838;

  --primary: #fafafa;
  --primary-fg: #171717;
  --primary-hover: #e5e5e5;

  --accent: #d4d4d4;
  --danger: #a3a3a3;

  --ring: rgba(245, 245, 245, 0.16);
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.5), 0 1px 2px rgba(0, 0, 0, 0.3);

  color-scheme: dark;
}

/* ---------- Сброс ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  transition: background-color 0.18s ease, color 0.18s ease;
}

h1,
h2,
h3,
p {
  margin: 0;
}

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

button,
input,
textarea,
select {
  font: inherit;
  color: inherit;
}

:focus-visible {
  outline: 2px solid var(--fg);
  outline-offset: 2px;
}

/* ---------- Раскладка ---------- */
.container {
  width: 100%;
  max-width: 680px;
  margin: 0 auto;
  padding: 0 20px;
}

.page {
  flex: 1 0 auto;
  padding-bottom: 64px;
}

.site-main {
  flex: 1 0 auto;
  padding: 40px 0 72px;
}

/* ---------- Хедер ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
}

@supports (backdrop-filter: blur(12px)) {
  .site-header {
    background: color-mix(in srgb, var(--bg) 86%, transparent);
    backdrop-filter: blur(12px);
  }
}

.site-header__inner {
  display: flex;
  align-items: center;
  gap: 16px;
  min-height: 58px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-weight: 600;
  font-size: 15px;
  letter-spacing: -0.01em;
  white-space: nowrap;
}

.brand__mark {
  display: grid;
  place-items: center;
  width: 26px;
  height: 26px;
  border-radius: 7px;
  background: var(--primary);
  color: var(--primary-fg);
  flex: none;
}

.brand__mark svg {
  width: 16px;
  height: 16px;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 2px;
  margin-left: auto;
  overflow-x: auto;
  scrollbar-width: none;
}

.site-nav::-webkit-scrollbar {
  display: none;
}

.site-nav a {
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  color: var(--fg-muted);
  white-space: nowrap;
  transition: background-color 0.15s ease, color 0.15s ease;
}

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

.site-nav a[aria-current="page"] {
  color: var(--fg);
  font-weight: 500;
  background: var(--bg-active);
}

/* ---------- Переключатель темы ---------- */
.theme-switch {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  padding: 3px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-elevated);
  flex: none;
}

.theme-switch button {
  display: grid;
  place-items: center;
  width: 30px;
  height: 26px;
  padding: 0;
  border: 0;
  border-radius: 7px;
  background: transparent;
  color: var(--fg-muted);
  cursor: pointer;
  transition: background-color 0.15s ease, color 0.15s ease;
}

.theme-switch button:hover {
  color: var(--fg);
  background: var(--bg-hover);
}

.theme-switch button[aria-pressed="true"] {
  background: var(--bg-active);
  color: var(--fg);
}

.theme-switch svg {
  width: 15px;
  height: 15px;
}

/* ---------- Заголовок страницы ---------- */
.page-head {
  margin-bottom: 24px;
}

.page-head h1 {
  font-size: 26px;
  font-weight: 650;
  letter-spacing: -0.02em;
}

.page-head p {
  margin-top: 6px;
  color: var(--fg-muted);
  font-size: 14px;
}

/* ---------- Карточка ---------- */
.card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: 20px;
}

.card + .card {
  margin-top: 16px;
}

.card__title {
  margin-bottom: 14px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--fg-muted);
}

/* ---------- Табы ---------- */
.tabs {
  display: flex;
  gap: 3px;
  padding: 3px;
  margin-bottom: 20px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-inset);
}

.tabs button {
  flex: 1;
  padding: 8px 12px;
  border: 0;
  border-radius: 7px;
  background: transparent;
  color: var(--fg-muted);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: background-color 0.15s ease, color 0.15s ease,
    box-shadow 0.15s ease;
}

.tabs button:hover {
  color: var(--fg);
}

.tabs button[aria-selected="true"] {
  background: var(--bg-elevated);
  color: var(--fg);
  box-shadow: var(--shadow-sm);
}

/* ---------- Поля ---------- */
.field + .field {
  margin-top: 16px;
}

.field__head {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 6px;
  min-height: 22px;
}

.label {
  font-size: 13px;
  font-weight: 500;
  color: var(--fg-muted);
}

.field__actions {
  display: flex;
  gap: 6px;
  margin-left: auto;
}

textarea,
input[type="text"],
input[type="number"],
select {
  display: block;
  width: 100%;
  padding: 10px 12px;
  background: var(--bg-inset);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 14px;
  transition: border-color 0.15s ease, box-shadow 0.15s ease,
    background-color 0.15s ease;
}

textarea {
  font-family: var(--font-mono);
  font-size: 13.5px;
  line-height: 1.6;
  resize: vertical;
  min-height: 128px;
  word-break: break-all;
}

input[readonly] {
  cursor: text;
}

textarea::placeholder,
input::placeholder {
  color: var(--fg-subtle);
}

textarea:hover,
input[type="text"]:hover,
input[type="number"]:hover,
select:hover {
  border-color: var(--border-strong);
}

textarea:focus,
input[type="text"]:focus,
input[type="number"]:focus,
select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--ring);
}

/* ---------- Кнопки ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 14px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  background: var(--primary);
  color: var(--primary-fg);
  font-size: 14px;
  font-weight: 500;
  line-height: 1.2;
  cursor: pointer;
  white-space: nowrap;
  transition: background-color 0.15s ease, border-color 0.15s ease,
    color 0.15s ease, opacity 0.15s ease;
}

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

.btn:active {
  transform: translateY(0.5px);
}

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

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

.btn--ghost {
  padding: 5px 10px;
  background: transparent;
  border-color: var(--border);
  color: var(--fg-muted);
  font-size: 12.5px;
  font-weight: 500;
}

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

.btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.btn:disabled:hover {
  background: var(--primary);
}

.btn--outline:disabled:hover,
.btn--ghost:disabled:hover {
  background: transparent;
  border-color: var(--border);
}

.btn--copied {
  color: var(--fg);
  border-color: var(--border-strong);
  background: var(--bg-active);
}

/* ---------- Ряд кнопок ---------- */
/* Copy прижат к левому краю, Clear / Generate — к правому. */
.actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-top: 18px;
}

/* ---------- Ошибка / статус ---------- */
.note {
  display: none;
  margin-top: 10px;
  padding: 9px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-inset);
  color: var(--fg-muted);
  font-size: 13px;
}

.note.is-visible {
  display: block;
}

.note--error {
  color: var(--fg);
  border-color: var(--border-strong);
  background: var(--bg-hover);
}

/* ---------- Разделитель ---------- */
.divider {
  height: 1px;
  margin: 20px 0;
  background: var(--border);
}

/* ---------- Список утилит на главной ---------- */
.tool-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 12px;
}

.tool-card {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 16px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: border-color 0.15s ease, background-color 0.15s ease,
    transform 0.15s ease;
}

.tool-card:hover {
  border-color: var(--border-strong);
  background: var(--bg-subtle);
  transform: translateY(-1px);
}

.tool-card__title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.tool-card__title svg {
  width: 16px;
  height: 16px;
  color: var(--fg-muted);
  flex: none;
}

.tool-card__desc {
  font-size: 13px;
  color: var(--fg-muted);
}

.tool-card__tags {
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--fg-subtle);
}

/* ---------- Хеш-строки ---------- */
.hash-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.hash-row {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-inset);
  padding: 10px 12px;
}

.hash-row__head {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 6px;
}

.hash-row__name {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--fg-muted);
}

.hash-row__value {
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.6;
  word-break: break-all;
  color: var(--fg);
  min-height: 20px;
  user-select: all;
}

.hash-row__value.is-empty {
  color: var(--fg-subtle);
  user-select: none;
}

/* ---------- UUID ---------- */
.uuid-value {
  display: block;
  width: 100%;
  padding: 16px 14px;
  background: var(--bg-inset);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 16px;
  text-align: center;
  letter-spacing: 0.01em;
  word-break: break-all;
  user-select: all;
}

.uuid-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: 10px;
  font-size: 12.5px;
  color: var(--fg-subtle);
}

/* ---------- Подвал ---------- */
.site-footer {
  flex: none;
  border-top: 1px solid var(--border);
  padding: 18px 0;
  color: var(--fg-subtle);
  font-size: 12.5px;
}

.site-footer__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 6px 16px;
}

/* ---------- Утилиты ---------- */
.hidden {
  display: none !important;
}

@media (max-width: 560px) {
  .site-header__inner {
    flex-wrap: wrap;
    padding: 8px 0;
  }

  .site-nav {
    order: 3;
    width: 100%;
    margin-left: 0;
    padding-bottom: 2px;
  }

  .theme-switch {
    margin-left: auto;
  }

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

  .card {
    padding: 16px;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    transition: none !important;
  }
}