/* UyTap — тёмная минималистичная тема */

:root {
  --bg-deep: #0e0e18;
  --bg: #13131e;
  --surface: #1a1a28;
  --surface-raised: #222234;
  --border: rgba(255, 255, 255, 0.09);
  --border-strong: rgba(255, 255, 255, 0.16);
  --text: #eeeef3;
  --text-muted: #8b8ba8;
  --accent: #9eafd4;
  --accent-soft: rgba(158, 175, 212, 0.14);
  --glow: rgba(158, 175, 212, 0.20);
  --radius-sm: 10px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --font: "Manrope", system-ui, sans-serif;
  --shadow-card: 0 0 0 1px var(--border), 0 20px 50px -24px rgba(0, 0, 0, 0.6);
  --header-h: 72px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.5;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

.page-bg {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: -1;
  background:
    radial-gradient(ellipse 85% 55% at 50% -10%, rgba(120, 140, 220, 0.22), transparent),
    radial-gradient(ellipse 55% 45% at 95% 5%, rgba(140, 100, 210, 0.12), transparent),
    radial-gradient(ellipse 45% 35% at 5% 85%, rgba(80, 120, 200, 0.10), transparent),
    var(--bg-deep);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid var(--border);
  background: rgba(8, 8, 10, 0.72);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.site-header__inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.logo {
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: -0.03em;
  color: var(--text);
  text-decoration: none;
  flex-shrink: 0;
}

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.btn {
  font-family: inherit;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s, color 0.2s, transform 0.15s;
}

/* .btn задаёт display — без этого атрибут hidden не скрывает ссылку «Сдать» */
[hidden] {
  display: none !important;
}

.btn:active {
  transform: scale(0.98);
}

.btn--ghost {
  background: transparent;
  color: var(--text-muted);
  border-color: transparent;
}

.btn--ghost:hover {
  color: var(--text);
  background: var(--surface-raised);
  border-color: var(--border);
}

.nav-actions .btn--ghost[aria-current="page"] {
  color: var(--text);
  background: var(--accent-soft);
  border-color: rgba(139, 157, 201, 0.35);
  pointer-events: none;
}

.btn--primary {
  background: var(--text);
  color: var(--bg-deep);
  border-color: var(--text);
}

.btn--primary:hover {
  background: #e4e4e8;
  border-color: #e4e4e8;
}

a.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
}

.btn--block {
  width: 100%;
  margin-top: 8px;
}

.btn--outline {
  background: transparent;
  color: var(--text-muted);
  border-color: var(--border-strong);
}

.btn--outline:hover {
  color: var(--text);
  border-color: var(--text-muted);
  background: var(--surface-raised);
}

.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface);
  cursor: pointer;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

.menu-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--text);
  border-radius: 1px;
}

.main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 28px 24px 64px;
}

.site-footer {
  max-width: 1200px;
  margin: 0 auto;
  padding: 28px 20px 32px;
  border-top: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 18px;
  color: var(--text-muted);
  font-size: 0.8125rem;
  text-align: center;
}

@media (min-width: 600px) {
  .site-footer {
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: space-between;
    text-align: left;
    padding: 24px 24px 28px;
  }
}

.site-footer__social {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
}

@media (min-width: 600px) {
  .site-footer__social {
    justify-content: flex-start;
  }
}

.footer-social {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  min-width: 44px;
  min-height: 44px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-muted);
  transition: color 0.2s, border-color 0.2s, background 0.2s, transform 0.15s;
}

.footer-social:hover {
  color: var(--text);
  border-color: var(--border-strong);
  background: var(--surface-raised);
}

.footer-social:active {
  transform: scale(0.96);
}

.footer-social__icon {
  width: 22px;
  height: 22px;
  display: block;
}

.site-footer__note {
  margin: 0;
  max-width: 280px;
  line-height: 1.45;
}

@media (min-width: 600px) {
  .site-footer__note {
    max-width: none;
    text-align: right;
  }
}

/* Общий layout для страниц с карточкой (регистрация, профиль, о нас, контакты, сдать) */

.auth-main {
  display: flex;
  justify-content: center;
  align-items: flex-start;
  padding-top: 32px;
}

.auth-card {
  width: 100%;
  max-width: 440px;
  padding: 32px 28px;
  border-radius: var(--radius-lg);
  background: var(--surface);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-card);
}

.auth-card__title {
  margin: 0 0 8px;
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.03em;
}

.auth-card__lead {
  margin: 0 0 28px;
  color: var(--text-muted);
  font-size: 0.9rem;
}

@media (max-width: 768px) {
  .nav-actions {
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: 6px;
  }

  .site-header__inner {
    padding: 0 16px;
    min-height: var(--header-h);
    height: auto;
    padding-top: 12px;
    padding-bottom: 12px;
    flex-wrap: wrap;
  }

  .main {
    padding: 20px 16px 48px;
  }
}

@media (max-width: 420px) {
  .nav-actions {
    justify-content: center;
    width: 100%;
  }

  .nav-actions .btn {
    padding: 8px 10px;
    font-size: 0.75rem;
  }

  .site-header__inner {
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
  }

  .logo {
    text-align: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }

  html {
    scroll-behavior: auto;
  }
}