:root {
  color-scheme: dark;
  font-family: "Segoe UI", Arial, sans-serif;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
  --red: #f33b4b;
  --red-dark: #ad1726;
  --panel: rgba(15, 16, 19, 0.96);
  --muted: #98a0b0;
  --mono: "DM Mono", "Consolas", monospace;
}

* { box-sizing: border-box; }

html { min-width: 320px; background: #070708; }

body {
  min-height: 100vh;
  margin: 0;
  color: #e8eaf0;
  background-color: #070708;
  background-image:
    linear-gradient(180deg, rgba(5, 5, 6, 0.95) 0%, rgba(5, 5, 6, 0.9) 44%, rgba(5, 5, 6, 0.96) 100%),
    url("background.png");
  background-position: center top;
  background-size: cover;
  background-attachment: fixed;
  background-repeat: no-repeat;
}

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

.app-frame {
  position: relative;
  min-height: 100vh;
  border: 1px solid rgba(175, 30, 43, 0.78);
  border-bottom: 0;
  overflow: hidden;
}

.topbar {
  min-height: 59px;
  padding: 0 31px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  background: rgba(5, 5, 6, 0.94);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: inherit;
  text-decoration: none;
}

.brand-mark {
  width: 37px;
  height: 37px;
  display: grid;
  place-items: center;
  border: 1px solid var(--red);
  border-radius: 5px;
  color: var(--red);
  box-shadow: 0 0 14px rgba(243, 59, 75, 0.12), inset 0 0 12px rgba(243, 59, 75, 0.08);
}

.brand-mark svg { width: 25px; height: 25px; }
.brand-copy { display: grid; gap: 3px; }
.brand-name { font-weight: 800; font-size: 17px; letter-spacing: -0.4px; }
.brand-name span { color: var(--red); font-family: var(--mono); font-size: 12px; font-weight: 500; }
.brand-tagline { color: #9296a0; font: 8px var(--mono); letter-spacing: 1.5px; }

.system-status {
  display: flex;
  align-items: center;
  gap: 27px;
  color: #a9adba;
  font: 9px var(--mono);
  letter-spacing: 0.1px;
}

.status-item {
  min-height: 24px;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  white-space: nowrap;
}

.status-item svg, .admin-link svg { width: 15px; height: 15px; }
.system-online svg { color: #28d8a0; }
.system-online strong { color: #26dda5; font-weight: 500; }
.secure-status svg { color: var(--red); }
.clock-status svg { color: #f34a58; }

.admin-link {
  min-width: 77px;
  min-height: 30px;
  padding: 0 10px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  border: 1px solid #282932;
  border-radius: 5px;
  background: #191a20;
  color: #c9ccd5;
  font: 9px var(--mono);
  text-decoration: none;
  transition: border-color 150ms ease, color 150ms ease;
}

.admin-link:hover { border-color: var(--red); color: #fff; }

main {
  width: min(1190px, calc(100% - 62px));
  margin: 0 auto;
}

.intro {
  padding: 39px 0 0;
  text-align: center;
}

.intro h1 {
  margin: 0;
  color: #f1f1f3;
  font-size: clamp(30px, 4vw, 45px);
  font-weight: 800;
  letter-spacing: -1.9px;
  line-height: 1.12;
  text-shadow: 0 0 22px rgba(243, 59, 75, 0.5);
}

.intro p {
  max-width: 720px;
  margin: 10px auto 0;
  color: #a5aaba;
  font-size: 13px;
  line-height: 1.55;
}

.catalog { padding: 53px 0 0; }

.catalog-toolbar {
  min-height: 42px;
  margin-bottom: 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.search-box {
  width: 380px;
  height: 42px;
  flex: 0 1 380px;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 12px;
  border: 1px solid transparent;
  border-radius: 7px;
  background: rgba(26, 27, 33, 0.96);
  color: var(--red);
  transition: border-color 150ms ease, box-shadow 150ms ease;
}

.search-box:focus-within { border-color: rgba(243, 59, 75, 0.65); box-shadow: 0 0 0 3px rgba(243, 59, 75, 0.08); }
.search-box svg { width: 16px; height: 16px; flex: 0 0 auto; }
.search-box input { width: 100%; min-width: 0; border: 0; outline: 0; background: transparent; color: #e5e7eb; font: 12px var(--mono); }
.search-box input::placeholder { color: #a0a5b2; opacity: 1; }
.search-box input::-webkit-search-cancel-button { cursor: pointer; }

.filter-list {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
}

.filter-button {
  min-height: 35px;
  padding: 0 16px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  border: 1px solid transparent;
  border-radius: 4px;
  background: rgba(26, 27, 33, 0.96);
  color: #9fa5b3;
  cursor: pointer;
  white-space: nowrap;
  font: 10px var(--mono);
  transition: color 150ms ease, background 150ms ease, border-color 150ms ease;
}

.filter-button svg { width: 14px; height: 14px; }
.filter-button:hover { border-color: rgba(243, 59, 75, 0.55); color: #f5f5f6; }
.filter-button.is-active { border-color: var(--red); background: var(--red); color: #151518; font-weight: 500; }

.module-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  align-items: stretch;
  gap: 23px;
}

.module-card {
  min-width: 0;
  min-height: 239px;
  padding: 15px 16px 14px;
  display: flex;
  flex-direction: column;
  border: 1px solid rgba(255, 255, 255, 0.105);
  border-radius: 9px;
  background: var(--panel);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.19);
  transition: transform 160ms ease, border-color 160ms ease, box-shadow 160ms ease;
}

.module-card:hover { transform: translateY(-2px); border-color: rgba(243, 59, 75, 0.42); box-shadow: 0 12px 30px rgba(0, 0, 0, 0.28); }

.card-availability {
  display: flex;
  align-items: center;
  gap: 7px;
  color: #32d49e;
  font: 9px var(--mono);
  letter-spacing: 0.25px;
}

.availability-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #34d6a2;
  box-shadow: 0 0 9px rgba(52, 214, 162, 0.72);
}

.card-meta { margin-top: 11px; display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.module-code, .difficulty { padding: 3px 6px; border-radius: 3px; font: 9px var(--mono); line-height: 1.1; }
.module-code { border: 1px solid rgba(243, 59, 75, 0.55); color: #f34c59; }
.difficulty { border: 1px solid currentColor; text-transform: uppercase; }
.difficulty-easy { color: #33d49f; background: rgba(18, 118, 86, 0.13); }
.difficulty-medium { color: #ffbf40; background: rgba(140, 86, 15, 0.13); }
.difficulty-hard { color: #ff7547; background: rgba(138, 48, 22, 0.15); }
.difficulty-insane { color: #fb4e60; background: rgba(135, 26, 39, 0.18); }

.card-heading { margin: 11px 0 0; display: flex; align-items: center; gap: 11px; min-height: 41px; }
.card-icon {
  width: 41px;
  height: 41px;
  flex: 0 0 41px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(243, 59, 75, 0.42);
  border-radius: 8px;
  background: rgba(84, 19, 29, 0.13);
  color: var(--red);
}
.card-icon svg { width: 22px; height: 22px; }
.card-heading h2 { margin: 0; color: #e9eaf0; font-size: 13px; font-weight: 700; line-height: 1.35; }

.card-description {
  margin: 9px 0 0;
  display: -webkit-box;
  overflow: hidden;
  color: #a4aabb;
  font-size: 10.5px;
  line-height: 1.55;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
}

.card-tags { margin-top: 8px; display: flex; flex-wrap: wrap; gap: 5px; }
.card-tag { padding: 4px 6px; border-radius: 3px; background: #1c1d23; color: #aeb2bf; font: 8px var(--mono); }

.card-footer {
  min-height: 25px;
  margin-top: auto;
  padding-top: 9px;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 12px;
  border-top: 1px solid rgba(255, 255, 255, 0.055);
}

.duration { display: inline-flex; align-items: center; gap: 5px; color: #a5aebe; font: 9px var(--mono); white-space: nowrap; }
.duration svg { width: 13px; height: 13px; }
.view-button {
  min-width: 61px;
  height: 23px;
  padding: 0 8px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  border: 1px solid var(--red);
  border-radius: 4px;
  background: transparent;
  color: #f34b59;
  cursor: pointer;
  font: 9px var(--mono);
  transition: color 150ms ease, background 150ms ease;
}
.view-button:hover { background: var(--red); color: #111; }
.view-button svg { width: 12px; height: 12px; }

.empty-state { padding: 65px 16px 75px; text-align: center; }
.catalog-error { margin: -14px 0 18px; color: #ff9ba3; font: 10px var(--mono); text-align: center; }
.catalog-error[hidden] { display: none; }
.empty-state[hidden] { display: none; }
.empty-mark { width: 36px; height: 36px; margin: 0 auto 12px; display: grid; place-items: center; border: 1px solid rgba(243, 59, 75, 0.55); border-radius: 50%; color: var(--red); font: 18px var(--mono); }
.empty-state h2 { margin: 0; font: 500 13px var(--mono); letter-spacing: 1px; }
.empty-state p { margin: 8px 0 18px; color: var(--muted); font-size: 12px; }
.clear-button { padding: 8px 12px; border: 1px solid var(--red); border-radius: 4px; background: transparent; color: var(--red); cursor: pointer; font: 10px var(--mono); }
.clear-button:hover { background: var(--red); color: #111; }

.footer {
  min-height: 64px;
  margin-top: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}
.footer p { margin: 0; color: #7e8390; font: 9px var(--mono); letter-spacing: 0.2px; }

.module-dialog {
  width: min(795px, calc(100% - 28px));
  max-width: none;
  height: min(754px, calc(100dvh - 32px));
  max-height: calc(100dvh - 32px);
  padding: 0;
  overflow: hidden;
  border: 1px solid rgba(243, 59, 75, 0.55);
  border-radius: 11px;
  background: #101114;
  color: #e8eaf0;
  box-shadow: 0 22px 90px rgba(0, 0, 0, 0.72);
}
.module-dialog::backdrop { background: rgba(0, 0, 0, 0.76); backdrop-filter: blur(3px); }
.module-dialog[open] { display: block; }
#dialog-content { height: 100%; min-height: 0; display: grid; grid-template-rows: auto minmax(0, 1fr) auto; }
.module-dialog[open]:not(.has-download) #dialog-content { grid-template-rows: auto minmax(0, 1fr); }
.module-dialog-header {
  min-height: 74px;
  padding: 12px 16px;
  display: flex;
  align-items: center;
  gap: 11px;
  border-bottom: 1px solid rgba(243, 59, 75, 0.22);
  background: #0c0d0f;
}
.dialog-category { flex: 0 0 auto; padding: 6px 9px; border: 1px solid rgba(243, 59, 75, 0.55); border-radius: 4px; color: var(--red); font: 9px var(--mono); }
.dialog-header-copy { min-width: 0; flex: 1; }
.dialog-header-copy h2 { margin: 0; color: #e8eaf0; font-size: 16px; font-weight: 700; line-height: 1.35; }
.dialog-header-copy p { margin: 6px 0 0; color: #90a0b5; font: 9px var(--mono); }
.dialog-close { width: 30px; height: 34px; flex: 0 0 30px; border: 0; background: transparent; color: #9aa5b5; cursor: pointer; font-size: 24px; line-height: 1; }
.dialog-close:hover { color: var(--red); }
.module-dialog-body { min-height: 0; padding: 15px 21px 24px; overflow-y: auto; overscroll-behavior: contain; scrollbar-color: #545960 #111214; scrollbar-width: thin; }
.dialog-description { margin: 0 0 15px; color: #98a4b6; font-size: 12px; line-height: 1.65; }
.dialog-hash { overflow-wrap: anywhere; color: #a5aebe; font: 10px var(--mono); }
.dialog-writeup { margin: 17px 0 0; }
.dialog-writeup h3 { margin: 22px 0 10px; color: #f33b43; font-size: 13px; font-weight: 750; line-height: 1.4; text-transform: uppercase; }
.dialog-writeup h3:first-child { margin-top: 0; }
.dialog-writeup p { margin: 0 0 12px; color: #9ba8ba; font-size: 12px; line-height: 1.65; overflow-wrap: anywhere; }
.dialog-writeup pre { margin: 10px 0 18px; padding: 11px 12px; overflow-x: auto; border: 1px solid rgba(115, 50, 45, 0.43); border-radius: 5px; background: #100909; color: #f18a81; font: 11px/1.6 var(--mono); white-space: pre; }
.dialog-writeup code, .dialog-hash code { font-family: var(--mono); }
.dialog-tags { margin: 0 0 15px; }
.module-dialog-footer { padding: 12px 14px 14px; border-top: 1px solid rgba(243, 59, 75, 0.16); background: #101114; }
.download-link { width: 100%; min-height: 42px; padding: 10px 14px; display: flex; align-items: center; justify-content: center; gap: 9px; border: 1px solid var(--red); border-radius: 7px; background: var(--red); color: #171719; font-size: 12px; font-weight: 750; text-align: center; text-decoration: none; }
.download-link svg { width: 17px; height: 17px; flex: 0 0 auto; }
.download-link:hover { border-color: #ff5965; background: #ff5965; }

.visually-hidden { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }

@media (max-width: 1000px) {
  main { width: min(850px, calc(100% - 40px)); }
  .catalog-toolbar { align-items: stretch; flex-direction: column; }
  .search-box { width: 100%; flex-basis: 42px; }
  .filter-list { justify-content: flex-start; flex-wrap: wrap; }
  .module-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .catalog { padding-top: 38px; }
}

@media (max-width: 640px) {
  .topbar { min-height: 58px; padding: 0 14px; }
  .brand { gap: 9px; }
  .brand-mark { width: 34px; height: 34px; }
  .brand-name { font-size: 15px; }
  .brand-tagline { font-size: 7px; letter-spacing: 1px; }
  .system-status { gap: 12px; }
  .system-online, .secure-status { display: none; }
  .admin-link { min-width: 32px; padding: 0 7px; font-size: 0; }
  .admin-link svg { width: 16px; height: 16px; }
  main { width: calc(100% - 28px); }
  .intro { padding-top: 35px; }
  .intro h1 { font-size: clamp(27px, 8vw, 36px); letter-spacing: -1.1px; }
  .intro p { max-width: 440px; font-size: 12px; }
  .desktop-break { display: none; }
  .catalog { padding-top: 31px; }
  .catalog-toolbar { margin-bottom: 20px; gap: 12px; }
  .filter-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 7px; }
  .filter-button { min-height: 36px; padding: 0 7px; gap: 5px; font-size: 9px; }
  .filter-button svg { width: 13px; height: 13px; }
  .module-grid { grid-template-columns: minmax(0, 1fr); gap: 13px; }
  .module-card { min-height: 226px; }
  .module-dialog { width: calc(100% - 18px); height: min(754px, calc(100dvh - 20px)); max-height: calc(100dvh - 20px); border-radius: 9px; }
  .module-dialog-header { min-height: 68px; padding: 10px; gap: 8px; }
  .dialog-category { padding: 5px 6px; font-size: 8px; }
  .dialog-header-copy h2 { font-size: 13px; }
  .dialog-header-copy p { font-size: 8px; }
  .module-dialog-body { padding: 13px 12px 18px; }
  .module-dialog-footer { padding: 9px; }
  .download-link { min-height: 42px; font-size: 10px; }
  .footer { margin-top: 20px; }
}

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