* {
  box-sizing: border-box;
}

:root {
  color-scheme: dark;
  --bg: #0a0a0a;
  --surface: #111111;
  --surface-strong: #161616;
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.15);
  --text-primary: #f0f0f0;
  --text-muted: #808080;
  --accent: #c9a227;
  --accent-soft: rgba(201, 162, 39, 0.12);
  --shadow-soft: 0 8px 32px rgba(0, 0, 0, 0.4);
  --shadow-hover: 0 12px 40px rgba(0, 0, 0, 0.6);
  --font-sans: "Montserrat", "Segoe UI", -apple-system, system-ui, sans-serif;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text-primary);
  display: flex;
  flex-direction: column;
}

/* ===== TOPBAR ===== */
.topbar {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2rem;
  height: 56px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

.topbar__brand {
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--text-primary);
}

.topbar__actions {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.topbar__action {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.topbar__label {
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.topbar__button {
  appearance: none;
  border: 1px solid var(--border-strong);
  background: transparent;
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  padding: 0.5rem 1rem;
  cursor: pointer;
  transition: border-color 150ms ease, color 150ms ease, background 150ms ease;
}

.topbar__button:hover,
.topbar__button:focus-visible {
  border-color: var(--accent);
  color: var(--accent);
}

.topbar__button:active {
  background: var(--accent);
  color: #000;
}

.topbar__button:disabled {
  cursor: progress;
  opacity: 0.5;
}

.topbar__status {
  font-size: 0.6rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  min-width: 100px;
}

.topbar__status--success {
  color: #00c853;
}

.topbar__status--error {
  color: #ff5252;
}

/* ===== PAGE ===== */
.page {
  flex: 1;
  width: min(1400px, 100%);
  margin: 0 auto;
  padding: 3rem 2rem 4rem;
}

/* ===== GRID ===== */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.5rem;
}

.app-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  padding: 2rem;
  text-decoration: none;
  color: inherit;
  background: var(--surface);
  border: 1px solid var(--border);
  transition: border-color 200ms ease, background 200ms ease;
}

.app-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 0;
  background: var(--accent);
  transition: height 200ms ease;
}

.app-card:hover,
.app-card:focus-visible {
  border-color: var(--border-strong);
  background: var(--surface-strong);
}

.app-card:hover::before,
.app-card:focus-visible::before {
  height: 100%;
}

.app-icon {
  width: 48px;
  height: 48px;
  background: var(--surface-strong);
  border: 1px solid var(--border);
  display: grid;
  place-items: center;
}

.app-icon svg {
  width: 24px;
  height: 24px;
  display: block;
  color: var(--accent);
}

.app-name {
  margin: 0;
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.app-category {
  margin: 0;
  font-size: 0.65rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.3em;
  color: var(--accent);
}

.app-description {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.8rem;
  line-height: 1.7;
  letter-spacing: 0.02em;
}

.app-meta {
  margin-top: auto;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.app-meta span {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.app-meta svg {
  width: 14px;
  height: 14px;
}

/* ===== BADGES ===== */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.75rem;
  font-size: 0.6rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  background: var(--accent-soft);
  color: var(--accent);
  border: 1px solid var(--accent);
}

.badge::before {
  content: "";
  width: 5px;
  height: 5px;
  background: currentColor;
}

.badge-stable {
  color: #00c853;
  background: rgba(0, 200, 83, 0.1);
  border-color: #00c853;
}

.badge-beta {
  color: #ffc107;
  background: rgba(255, 193, 7, 0.1);
  border-color: #ffc107;
}

.badge-experimental {
  color: #ff5252;
  background: rgba(255, 82, 82, 0.1);
  border-color: #ff5252;
}

/* ===== EMPTY STATE ===== */
.empty-state {
  grid-column: 1 / -1;
  padding: 3rem;
  border: 1px solid var(--border);
  background: var(--surface);
  text-align: center;
  color: var(--text-muted);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  line-height: 2;
}

.empty-state code {
  color: var(--accent);
  background: var(--surface-strong);
  padding: 0.25rem 0.5rem;
  border: 1px solid var(--border);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .topbar {
    padding: 0 1rem;
    height: 48px;
  }

  .topbar__brand {
    font-size: 0.75rem;
    letter-spacing: 0.2em;
  }

  .topbar__label {
    display: none;
  }

  .topbar__status {
    display: none;
  }

  .page {
    padding: 2rem 1rem 3rem;
  }

  .grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .app-card {
    padding: 1.5rem;
  }
}