/**
 * OSMTH design tokens — Ceremonial Modern Light
 * Red / Black / White brand; display serif + UI sans.
 */
@import url('https://fonts.googleapis.com/css2?family=Source+Sans+3:ital,wght@0,400;0,500;0,600;0,700;1,400&family=Source+Serif+4:ital,opsz,wght@0,8..60,500;0,8..60,600;0,8..60,700;1,8..60,500&display=swap');

:root {
  --bg: #fafaf8;
  --ink: #0a0a0a;
  --muted: #5c5c5c;
  --crimson: #8b0000;
  --crimson-hover: #9b1b1b;
  --line: #e5e5e5;
  --line-strong: #c8c8c8;
  --surface: #ffffff;
  --surface-muted: #f3f3f1;

  /* Source Serif 4 — мягкие засечки, хорошо читается на кириллице (не «острый» display) */
  --font-display: 'Source Serif 4', 'PT Serif', Georgia, serif;
  --font-ui: 'Source Sans 3', system-ui, -apple-system, 'Segoe UI', sans-serif;

  --radius: 4px;
  --header-h: 56px;
  --bottom-nav-h: 56px;
  --max: 1120px;
  --space: 1rem;
  --space-lg: 2rem;
  --shadow-soft: 0 1px 0 rgba(10, 10, 10, 0.06);

  --theme-color: #8b0000;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-ui);
  font-size: 16px;
  line-height: 1.5;
  color: var(--ink);
  background-color: var(--bg);
  -webkit-font-smoothing: antialiased;
}

/* Brand / ceremonial titles — serif. Ordinary page H2/H3 stay UI sans for readability. */
.font-display,
.brand-title,
.hero__title,
.hero__subtitle,
.site-brand__name,
.login-header h1,
.login-header h2,
.site-footer__motto {
  font-family: var(--font-display);
  font-weight: 600;
  font-optical-sizing: auto;
  letter-spacing: 0;
  color: var(--ink);
}

h1, h2, h3 {
  font-family: var(--font-ui);
  font-weight: 600;
  letter-spacing: 0;
  color: var(--ink);
}

.brand-title,
.hero__title,
.login-header h1 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.3;
}

a {
  color: var(--crimson);
}

a:hover {
  color: var(--crimson-hover);
}

/* <a class="btn"> must not inherit link-hover crimson over filled backgrounds */
a.btn:hover,
a.btn:focus {
  text-decoration: none;
}

/* Канон названия: текст чёрный, первая буква слова — красная */
.red,
span.red,
.brand-title .red,
.hero__title .red,
.hero__subtitle .red,
.login-header .red,
.site-brand__name .red {
  color: var(--crimson);
}

.hero__title,
.hero__subtitle,
.login-header h1,
.login-header h2,
.site-brand__name {
  color: var(--ink);
}

/* Shared buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  min-height: 44px;
  padding: 0.65rem 1.25rem;
  font-family: var(--font-ui);
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
  transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

/* Filled crimson buttons — white label always (incl. <a.btn> :hover) */
.btn-primary,
.btn.btn-primary,
.btn-edit,
.btn-add,
.btn-filter,
.btn-danger,
a.btn-primary,
a.btn.btn-primary,
a.btn-edit,
a.btn-add,
a.btn-filter,
a.btn-danger {
  background-color: var(--crimson);
  color: #fff;
  border-color: var(--crimson);
}

.btn-primary:hover,
.btn.btn-primary:hover,
.btn-edit:hover,
.btn-add:hover,
.btn-filter:hover,
.btn-danger:hover,
a.btn-primary:hover,
a.btn.btn-primary:hover,
a.btn-edit:hover,
a.btn-add:hover,
a.btn-filter:hover,
a.btn-danger:hover,
.btn-primary:focus,
.btn.btn-primary:focus,
a.btn-primary:focus {
  background-color: var(--crimson-hover);
  color: #fff;
  border-color: var(--crimson-hover);
}

.btn-secondary,
.btn.btn-secondary,
.btn-ghost {
  background: transparent;
  color: var(--crimson);
  border-color: var(--crimson);
}

.btn-secondary:hover,
.btn.btn-secondary:hover,
.btn-ghost:hover,
a.btn-secondary:hover,
a.btn.btn-secondary:hover,
a.btn-ghost:hover {
  background: rgba(139, 0, 0, 0.06);
  color: var(--crimson-hover);
}

.btn-back {
  background: transparent;
  color: var(--ink);
  border-color: var(--line-strong);
}

.btn-back:hover,
a.btn-back:hover {
  border-color: var(--ink);
  color: var(--ink);
  background: var(--surface-muted);
}

.btn-danger {
  background: #a32020;
  color: #fff;
  border-color: #a32020;
}

.btn-danger:hover,
a.btn-danger:hover {
  background: #8a1a1a;
  color: #fff;
  border-color: #8a1a1a;
}