/*
 * Общие стили лендинга Завеса.
 * Без внешних ресурсов: только системные шрифты, тема по prefers-color-scheme.
 */

:root {
  color-scheme: light dark;

  --bg: #f6f7f9;
  --bg-card: #ffffff;
  --fg: #16191f;
  --fg-muted: #5b6472;
  --border: #d9dee6;
  --accent: #0d6b5c;
  --accent-fg: #ffffff;
  --accent-soft: #e3f3ef;
  --warn-bg: #fff6df;
  --warn-border: #f0d58a;
  --code-bg: #eef1f5;
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.06), 0 8px 24px rgba(0, 0, 0, 0.05);
  --radius: 14px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1318;
    --bg-card: #171c23;
    --fg: #e9edf2;
    --fg-muted: #9aa5b4;
    --border: #2a323d;
    --accent: #3fbfa5;
    --accent-fg: #08221d;
    --accent-soft: #14302a;
    --warn-bg: #2b2410;
    --warn-border: #6b5a22;
    --code-bg: #1f2630;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.4), 0 8px 24px rgba(0, 0, 0, 0.35);
  }
}

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

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
  font-size: 17px;
  line-height: 1.55;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
}

a:hover {
  text-decoration-thickness: 2px;
}

code,
kbd,
.mono {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
}

code {
  background: var(--code-bg);
  padding: 0.1em 0.35em;
  border-radius: 6px;
  font-size: 0.92em;
  word-break: break-all;
}

/* --- Каркас --- */

.site-header {
  border-bottom: 1px solid var(--border);
  background: var(--bg-card);
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-top: 0.8rem;
  padding-bottom: 0.8rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--fg);
  text-decoration: none;
}

.brand svg {
  width: 28px;
  height: 28px;
  flex: none;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.2rem 1rem;
  font-size: 0.95rem;
}

.site-nav a {
  color: var(--fg-muted);
  text-decoration: none;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: var(--fg);
  text-decoration: underline;
}

main {
  flex: 1;
}

.wrap {
  width: 100%;
  max-width: 820px;
  margin: 0 auto;
  padding: 0 1.1rem;
}

.site-footer {
  border-top: 1px solid var(--border);
  color: var(--fg-muted);
  font-size: 0.9rem;
  padding: 1.2rem 0 2rem;
  margin-top: 3rem;
}

.site-footer .wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1.2rem;
  justify-content: space-between;
}

.site-footer a {
  color: var(--fg-muted);
}

/* --- Типографика --- */

h1 {
  font-size: clamp(1.7rem, 4.5vw, 2.3rem);
  line-height: 1.2;
  margin: 2.2rem 0 0.6rem;
  letter-spacing: -0.01em;
}

h2 {
  font-size: 1.3rem;
  margin: 2rem 0 0.6rem;
}

h3 {
  font-size: 1.05rem;
  margin: 1.4rem 0 0.4rem;
}

p {
  margin: 0.6rem 0;
}

.lead {
  font-size: 1.12rem;
  color: var(--fg-muted);
  margin-bottom: 1.4rem;
}

.en {
  display: block;
  color: var(--fg-muted);
  font-size: 0.8em;
  font-weight: 400;
  margin-top: 0.15em;
}

h1 .en,
h2 .en,
h3 .en {
  font-weight: 400;
}

.muted {
  color: var(--fg-muted);
}

.small {
  font-size: 0.9rem;
}

ul,
ol {
  padding-left: 1.4rem;
}

li {
  margin: 0.3rem 0;
}

hr {
  border: 0;
  border-top: 1px solid var(--border);
  margin: 2rem 0;
}

/* --- Карточки и шаги --- */

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.2rem 1.3rem;
  box-shadow: var(--shadow);
  margin: 1rem 0;
}

.card > :first-child {
  margin-top: 0;
}

.card > :last-child {
  margin-bottom: 0;
}

.steps {
  list-style: none;
  padding: 0;
  margin: 1.2rem 0;
  counter-reset: step;
}

.steps > li {
  position: relative;
  padding-left: 3.2rem;
  margin: 0 0 1.4rem;
  counter-increment: step;
}

.steps > li::before {
  content: counter(step);
  position: absolute;
  left: 0;
  top: 0.05rem;
  width: 2.3rem;
  height: 2.3rem;
  border-radius: 50%;
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}

.steps > li > h2,
.steps > li > h3 {
  margin-top: 0.25rem;
}

.note {
  background: var(--warn-bg);
  border: 1px solid var(--warn-border);
  border-radius: 10px;
  padding: 0.8rem 1rem;
  margin: 1rem 0;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1rem;
}

/* --- Кнопки --- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 48px;
  padding: 0.65rem 1.2rem;
  border-radius: 12px;
  border: 1px solid var(--accent);
  background: var(--accent);
  color: var(--accent-fg);
  font: inherit;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  text-align: center;
  transition: filter 0.12s ease, transform 0.06s ease;
}

.btn:hover {
  filter: brightness(1.06);
  text-decoration: none;
}

.btn:active {
  transform: translateY(1px);
}

.btn:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 3px;
}

.btn.secondary {
  background: var(--bg-card);
  color: var(--accent);
}

.btn.ghost {
  background: transparent;
  border-color: var(--border);
  color: var(--fg);
  font-weight: 500;
}

.btn svg {
  width: 20px;
  height: 20px;
  flex: none;
}

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin: 1rem 0;
}

.btn-row .btn {
  flex: 1 1 220px;
}

.store-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin: 0.6rem 0;
}

.store-links .btn {
  flex: 1 1 180px;
}

/* --- Код приглашения --- */

.invite-code-box {
  background: var(--code-bg);
  border: 1px dashed var(--border);
  border-radius: 12px;
  padding: 1rem;
  margin: 0.8rem 0;
  text-align: center;
}

.invite-code {
  display: block;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  font-size: clamp(1.25rem, 5vw, 2rem);
  font-weight: 700;
  letter-spacing: 0.06em;
  word-break: break-all;
  user-select: all;
  -webkit-user-select: all;
  margin-bottom: 0.6rem;
}

.invite-code.is-missing {
  font-size: 1.05rem;
  font-weight: 500;
  letter-spacing: normal;
  color: var(--fg-muted);
  font-family: inherit;
}

.copy-status {
  min-height: 1.4em;
  font-size: 0.9rem;
  color: var(--fg-muted);
  margin-top: 0.4rem;
}

.hidden {
  display: none !important;
}

/* --- Таблица «видит / не видит» --- */

.table-wrap {
  overflow-x: auto;
}

table {
  border-collapse: collapse;
  width: 100%;
  font-size: 0.95rem;
}

th,
td {
  text-align: left;
  vertical-align: top;
  padding: 0.55rem 0.7rem;
  border-bottom: 1px solid var(--border);
}

th {
  color: var(--fg-muted);
  font-weight: 600;
}

/* --- 404 --- */

.center {
  text-align: center;
}

.big-num {
  font-size: clamp(4rem, 18vw, 7rem);
  font-weight: 800;
  line-height: 1;
  color: var(--accent);
  margin: 2.5rem 0 0.5rem;
  letter-spacing: -0.03em;
}

@media (max-width: 520px) {
  body {
    font-size: 16px;
  }

  .card {
    padding: 1rem;
  }

  .steps > li {
    padding-left: 2.8rem;
  }

  .steps > li::before {
    width: 2rem;
    height: 2rem;
  }
}

@media print {
  .site-header,
  .site-footer,
  .btn,
  .btn-row {
    display: none !important;
  }
}

/* --- Утилиты (вместо inline-style, чтобы CSP мог запрещать style-attr) --- */

.mt0 {
  margin-top: 0;
}

.center-row {
  justify-content: center;
}

/* --- Формы (страница удаления аккаунта) --- */

.form-field {
  margin: 1rem 0;
}

.form-field > label {
  display: block;
  font-weight: 600;
  margin-bottom: 0.35rem;
}

.form-field input[type="text"],
.form-field input[type="password"] {
  display: block;
  width: 100%;
  min-height: 48px;
  padding: 0.6rem 0.8rem;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--bg-card);
  color: var(--fg);
  font: inherit;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  letter-spacing: 0.02em;
}

.form-field input:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 1px;
  border-color: var(--accent);
}

/* Поле с ошибкой помечается не только цветом: рядом всегда есть текст ошибки */
.form-field input[aria-invalid="true"] {
  border-color: #b3261e;
  border-width: 2px;
}

@media (prefers-color-scheme: dark) {
  .form-field input[aria-invalid="true"] {
    border-color: #f2b8b5;
  }
}

.field-hint {
  margin: 0.3rem 0 0;
  color: var(--fg-muted);
  font-size: 0.9rem;
}

.field-error {
  margin: 0.3rem 0 0;
  font-size: 0.9rem;
  font-weight: 600;
  color: #b3261e;
}

@media (prefers-color-scheme: dark) {
  .field-error {
    color: #f2b8b5;
  }
}

.field-error:empty {
  display: none;
}

.checkbox-row {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  margin: 1.2rem 0;
}

.checkbox-row input[type="checkbox"] {
  width: 22px;
  height: 22px;
  margin: 0.15rem 0 0;
  flex: none;
  accent-color: var(--accent);
}

.checkbox-row label {
  font-weight: 500;
}

.form-status {
  margin: 1rem 0 0;
  padding: 0.8rem 1rem;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--code-bg);
  font-weight: 500;
}

.form-status:empty {
  display: none;
}

.form-status.is-error {
  background: var(--warn-bg);
  border-color: var(--warn-border);
}

.form-status.is-ok {
  background: var(--accent-soft);
  border-color: var(--accent);
}

.btn.danger {
  background: #b3261e;
  border-color: #b3261e;
  color: #fff;
}

.btn.danger:focus-visible {
  outline: 3px solid #b3261e;
  outline-offset: 3px;
}

.busy {
  cursor: progress;
  filter: grayscale(0.4);
}