body {
  margin: 0;
  background: #020617;
  color: #e5e7eb;
  font-family: 'Segoe UI', system-ui, sans-serif;
}

/* Landing */
.landing {
  height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  background: radial-gradient(circle, #020617, #000);
  text-align: center;
}

.enter-btn {
  margin-top: 25px;
  padding: 14px 28px;
  background: #38bdf8;
  color: #020617;
  text-decoration: none;
  border-radius: 8px;
  font-weight: bold;
}

/* App Layout */
.app {
  display: flex;
  height: 100vh;
}

/* Sidebar */
.sidebar {
  width: 260px;
  background: #020617;
  border-right: 1px solid #1e293b;
  padding: 20px;
  box-sizing: border-box;
}

.logo {
  font-size: 22px;
  font-weight: bold;
  margin-bottom: 30px;
  color: #38bdf8;
}

.menu-section {
  margin-top: 20px;
  font-size: 12px;
  color: #94a3b8;
  text-transform: uppercase;
}

.sidebar a, .sidebar span {
  display: block;
  color: #e5e7eb;
  text-decoration: none;
  padding: 8px 10px;
  margin: 4px 0;
  border-radius: 6px;
  transition: 0.15s;
}

.sidebar a:hover {
  background: #020617;
  border: 1px solid #38bdf8;
}

.disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

/* Content */
.content {
  flex: 1;
  background: #020617;
}

.toolframe {
  width: 100%;
  height: 100%;
  border: none;
}

/* Tool Cards */
.card {
  background: #020617;
  border: 1px solid #1e293b;
  border-radius: 10px;
  padding: 25px;
  max-width: 500px;
}

input, button {
  width: 100%;
  padding: 10px;
  margin: 8px 0 15px 0;
  border-radius: 6px;
  border: 1px solid #1e293b;
  background: #020617;
  color: #e5e7eb;
}

button {
  background: #38bdf8;
  color: #020617;
  font-weight: bold;
  cursor: pointer;
}

h2 {
  color: #38bdf8;
}