:root {
  --bg-primary: #0f1117;
  --bg-secondary: #1a1d27;
  --bg-card: #1e2130;
  --bg-card-hover: #252839;
  --text-primary: #e4e6ed;
  --text-secondary: #9498a8;
  --text-muted: #6b7084;
  --accent: #4f8ff7;
  --accent-hover: #3a7ae8;
  --border: #2a2d3a;
  --shadow: rgba(0, 0, 0, 0.3);
  --category-obs: #10b981;
  --category-dev: #8b5cf6;
  --category-infra: #f59e0b;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
}

.screen { display: flex; }
.hidden { display: none !important; }

/* Login */
.login-container {
  margin: auto;
  text-align: center;
  padding: 3rem;
  background: var(--bg-secondary);
  border-radius: 12px;
  border: 1px solid var(--border);
  box-shadow: 0 8px 32px var(--shadow);
  min-width: 360px;
}

.login-logo {
  color: var(--accent);
  margin-bottom: 1.5rem;
}

.login-container h1 {
  font-size: 1.75rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.login-subtitle {
  color: var(--text-secondary);
  margin-bottom: 2rem;
  font-size: 0.9rem;
}

  min-height: 100vh;
  align-items: center;
  justify-content: center;
}

/* Buttons */
.btn-primary {
  background: var(--accent);
  color: #fff;
  border: none;
  padding: 0.75rem 2.5rem;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.2s;
}

.btn-primary:hover { background: var(--accent-hover); }

.btn-secondary {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border);
  padding: 0.4rem 1rem;
  border-radius: 6px;
  font-size: 0.85rem;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-secondary:hover {
  color: var(--text-primary);
  border-color: var(--text-secondary);
}

/* Header */
header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 56px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.5rem;
  z-index: 100;
}

.header-left {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--accent);
}

.header-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
}

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

.user-info {
  color: var(--text-secondary);
  font-size: 0.85rem;
  text-decoration: none;
  transition: color 0.2s;
}

.user-info:hover {
  color: var(--text-primary);
}

/* Dashboard */
#dashboard {
  flex-direction: column;
  min-height: 100vh;
}

main {
  margin-top: 56px;
  padding: 2rem;
  max-width: 1600px;
  width: 100%;
  margin-left: auto;
  margin-right: auto;
}

/* App Grid */
.category-section {
  margin-bottom: 2rem;
}

.category-title {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
  padding-left: 0.25rem;
}

.category-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1rem;
}

.app-card {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.25rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  text-decoration: none;
  color: var(--text-primary);
  transition: all 0.2s;
}

.app-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--accent);
  transform: translateY(-1px);
  box-shadow: 0 4px 16px var(--shadow);
}

.app-icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 1.25rem;
}

.app-icon.obs { background: rgba(16, 185, 129, 0.15); color: var(--category-obs); }
.app-icon.dev { background: rgba(139, 92, 246, 0.15); color: var(--category-dev); }
.app-icon.infra { background: rgba(245, 158, 11, 0.15); color: var(--category-infra); }

.app-details {
  overflow: hidden;
}

.app-name {
  font-weight: 500;
  font-size: 0.95rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.app-description {
  font-size: 0.8rem;
  color: var(--text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Callback screen */
#callback-screen {
  min-height: 100vh;
  align-items: center;
  justify-content: center;
}

@media (max-width: 640px) {
  .category-grid {
    grid-template-columns: 1fr;
  }
  main {
    padding: 1rem;
  }
}