:root {
  color-scheme: dark;
  --bg: #070812;
  --bg-soft: #101323;
  --panel: rgba(255, 255, 255, 0.075);
  --panel-strong: rgba(255, 255, 255, 0.13);
  --text: #f8f8ff;
  --muted: #aeb5c8;
  --line: rgba(255, 255, 255, 0.15);
  --blue: #7c9cff;
  --cyan: #5df2df;
  --pink: #ff6fd8;
  --red: #ff6b7a;
  --green: #5dff9a;
  --shadow: rgba(0, 0, 0, 0.32);
}

:root[data-theme="light"] {
  color-scheme: light;
  --bg: #f5f7ff;
  --bg-soft: #ffffff;
  --panel: rgba(255, 255, 255, 0.82);
  --panel-strong: rgba(255, 255, 255, 0.96);
  --text: #111527;
  --muted: #5e667c;
  --line: rgba(20, 28, 54, 0.14);
  --shadow: rgba(55, 77, 130, 0.18);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-height: 100vh;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 12% 8%, rgba(124, 156, 255, 0.34), transparent 30rem),
    radial-gradient(circle at 82% 14%, rgba(255, 111, 216, 0.18), transparent 26rem),
    radial-gradient(circle at 50% 90%, rgba(93, 242, 223, 0.12), transparent 30rem),
    linear-gradient(135deg, var(--bg) 0%, var(--bg-soft) 100%);
}

a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; }
main { width: min(1160px, calc(100% - 32px)); margin: 0 auto; padding: 34px 0 76px; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  width: min(1160px, calc(100% - 32px));
  margin: 0 auto;
  padding: 16px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 18px;
  backdrop-filter: blur(18px);
}

.nav-group, .nav-actions, nav, .hero-actions, .quick-actions { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.avatar { border-radius: 14px; border: 1px solid var(--line); background: var(--panel); box-shadow: 0 10px 28px var(--shadow); }
nav a, .nav-toggle {
  padding: 10px 13px;
  border: 1px solid transparent;
  border-radius: 999px;
  color: var(--muted);
  background: transparent;
  cursor: pointer;
}
nav a.active, nav a:hover, .nav-toggle:hover { color: var(--text); border-color: var(--line); background: var(--panel); }
.brand {
  display: grid;
  justify-items: end;
  gap: 1px;
  padding: 8px 0 8px 12px;
  font-weight: 950;
  letter-spacing: -0.04em;
}
.brand span { color: var(--cyan); font-size: 1.15rem; }
.brand small { color: var(--muted); font-size: 0.68rem; letter-spacing: 0.18em; text-transform: uppercase; }

.section-anchor { scroll-margin-top: 96px; }
.hero {
  min-height: 620px;
  display: grid;
  grid-template-columns: minmax(0, 1.22fr) minmax(280px, 0.78fr);
  gap: 28px;
  align-items: center;
}
.hero h1, .admin-hero h1, .auth-card h1 {
  margin: 0;
  font-size: clamp(2.6rem, 8vw, 6.7rem);
  line-height: 0.89;
  letter-spacing: -0.085em;
}
.lead, .section-heading p, .admin-hero p, .auth-card p { color: var(--muted); font-size: 1.08rem; line-height: 1.72; max-width: 760px; }
.eyebrow { margin: 0 0 14px; color: var(--cyan); font-weight: 850; letter-spacing: 0.18em; text-transform: uppercase; font-size: 0.76rem; }
.admin-note { margin-top: 18px; color: var(--muted); }

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 12px 16px;
  color: var(--text);
  background: var(--panel);
  cursor: pointer;
  font-weight: 800;
  transition: transform 160ms ease, border-color 160ms ease, background 160ms ease;
}
.button.primary { background: linear-gradient(135deg, var(--blue), var(--cyan)); color: #071018; border-color: transparent; }
.button.accent { background: linear-gradient(135deg, var(--pink), #ffd166); color: #160d18; border-color: transparent; }
.button.ghost { background: transparent; }
.button:hover { transform: translateY(-2px); border-color: rgba(93, 242, 223, 0.42); }
.link-icon {
  min-width: 26px;
  height: 26px;
  display: inline-grid;
  place-items: center;
  border-radius: 9px;
  background: rgba(255, 255, 255, 0.14);
  font-size: 0.72rem;
  font-weight: 950;
}

.hero-panel, .panel, .auth-card, .about-cards article, .status-card {
  border: 1px solid var(--line);
  background: var(--panel);
  backdrop-filter: blur(18px);
  box-shadow: 0 24px 70px var(--shadow);
}
.hero-panel { min-height: 340px; padding: 28px; border-radius: 34px; display: grid; align-content: end; gap: 10px; }
.panel-avatar { border-radius: 24px; border: 1px solid var(--line); box-shadow: 0 18px 46px var(--shadow); }
.hero-panel span, .status-card span { color: var(--muted); }
.hero-panel strong { font-size: 1.55rem; }
.hero-panel small, .panel p, dd { color: var(--muted); line-height: 1.65; }

.section { margin-top: 64px; }
.section-heading { margin-bottom: 22px; }
.section-heading h2 { margin: 0; font-size: clamp(2rem, 5vw, 4.4rem); letter-spacing: -0.065em; }
.about-cards, .status-grid, .split, .admin-grid { display: grid; gap: 16px; }
.about-cards { grid-template-columns: repeat(3, 1fr); }
.about-cards article, .panel { border-radius: 26px; padding: 22px; }
.about-cards h2, .panel h2, .panel h3 { margin-top: 0; letter-spacing: -0.035em; }
.about-cards p { color: var(--muted); line-height: 1.65; }

.status-section { padding-top: 18px; }
.status-grid { grid-template-columns: repeat(4, 1fr); margin: 22px 0 16px; }
.status-card { border-radius: 22px; padding: 18px; display: grid; gap: 8px; }
.status-card strong { font-size: 1.35rem; }
.status-card.ok { border-color: rgba(93, 255, 154, 0.42); }
.status-card.bad { border-color: rgba(255, 107, 122, 0.5); }
.split { grid-template-columns: repeat(2, 1fr); }

.site-footer {
  width: min(1160px, calc(100% - 32px));
  margin: 0 auto;
  padding: 32px 0 46px;
  border-top: 1px solid var(--line);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
}
.footer-brand strong { color: var(--cyan); font-size: 1.4rem; letter-spacing: -0.04em; }
.footer-brand p { color: var(--muted); max-width: 420px; line-height: 1.65; }
.footer-columns { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.footer-columns section { display: grid; align-content: start; gap: 10px; }
.footer-columns h2 { margin: 0 0 4px; font-size: 0.9rem; text-transform: uppercase; letter-spacing: 0.12em; color: var(--muted); }
.footer-columns a { color: var(--text); display: inline-flex; align-items: center; gap: 8px; }

.auth-wrap { min-height: 62vh; display: grid; place-items: center; }
.auth-card { width: min(430px, 100%); padding: 28px; border-radius: 30px; display: grid; gap: 14px; }
.auth-card h1 { font-size: clamp(2rem, 7vw, 3.8rem); }
.admin-hero { display: flex; justify-content: space-between; gap: 20px; align-items: flex-start; padding: 38px 0 18px; }
.admin-hero h1 { font-size: clamp(2.5rem, 7vw, 5.4rem); }
.admin-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.wide { grid-column: 1 / -1; }
.form, .check-list { display: grid; gap: 14px; }
.two-cols { grid-template-columns: repeat(2, minmax(0, 1fr)); align-items: end; }
label { display: grid; gap: 8px; color: var(--muted); font-weight: 750; }
input, select, textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 12px 13px;
  color: var(--text);
  background: rgba(0, 0, 0, 0.22);
}
:root[data-theme="light"] input, :root[data-theme="light"] select, :root[data-theme="light"] textarea { background: rgba(255, 255, 255, 0.7); }
textarea { min-height: 96px; resize: vertical; }
.check-list label { grid-template-columns: auto 1fr; align-items: center; }
.check-list input { width: auto; }
.alert, .success { padding: 13px 15px; border-radius: 14px; }
.alert { background: rgba(255, 107, 122, 0.14); border: 1px solid rgba(255, 107, 122, 0.4); }
.success { background: rgba(93, 255, 154, 0.14); border: 1px solid rgba(93, 255, 154, 0.35); }
dl { display: grid; grid-template-columns: max-content 1fr; gap: 10px 14px; }
dt { color: var(--text); font-weight: 850; }
dd { margin: 0; overflow-wrap: anywhere; }

@media (max-width: 860px) {
  .site-header, .hero, .admin-hero, .site-footer { display: grid; }
  .nav-actions { justify-content: space-between; }
  .brand { justify-items: start; padding-left: 0; }
  .hero, .about-cards, .status-grid, .split, .admin-grid, .two-cols, .site-footer, .footer-columns { grid-template-columns: 1fr; }
  .hero { min-height: auto; padding-top: 28px; }
  .wide { grid-column: auto; }
}

@media (max-width: 520px) {
  main, .site-header, .site-footer { width: min(100% - 22px, 1160px); }
  .nav-group, .nav-actions { width: 100%; }
  .brand { margin-left: auto; }
  .button { width: 100%; }
  .hero h1 { font-size: 3rem; }
}