body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: linear-gradient(135deg, #1f2937, #111827);
  color: white;
}

.container {
  width: 90%;
  max-width: 1000px;
  margin: auto;
  padding: 30px 0;
}

h1 {
  text-align: center;
  margin-bottom: 30px;
}

/* FORM PANEL */
.form-panel {
  background: #1e293b;
  padding: 25px;
  border-radius: 18px;
  margin-bottom: 40px;
}

.form-panel input,
.form-panel select {
  width: 100%;
  padding: 12px;
  margin: 10px 0;
  border-radius: 8px;
  border: none;
  outline: none;
}

.form-panel button {
  width: 100%;
  padding: 12px;
  border-radius: 10px;
  border: none;
  background: #6366f1;
  color: white;
  font-weight: bold;
  cursor: pointer;
  transition: 0.3s;
}

.form-panel button:hover {
  background: #4f46e5;
}

/* CARDS GRID */
.links-grid {
  display: grid;
  gap: 20px;
}

/* CARD BASE */
.link-card {
  padding: 20px;
  border-radius: 16px;
  transition: 0.3s ease;
}

/* STATUS COLORS */
.link-card.active {
  background: rgba(34,197,94,0.08);
  border: 1px solid rgba(34,197,94,0.4);
  box-shadow: 0 0 20px rgba(34,197,94,0.2);
}

.link-card.expiring {
  background: rgba(250,204,21,0.08);
  border: 1px solid rgba(250,204,21,0.4);
  box-shadow: 0 0 20px rgba(250,204,21,0.2);
}

.link-card.expired {
  background: rgba(239,68,68,0.08);
  border: 1px solid rgba(239,68,68,0.4);
  box-shadow: 0 0 20px rgba(239,68,68,0.2);
}

.link-card h3 {
  margin: 0;
}

.link-card a {
  color: #60a5fa;
  text-decoration: none;
}

.link-card button {
  margin-top: 10px;
  padding: 6px 12px;
  border: none;
  border-radius: 6px;
  background: #ef4444;
  color: white;
  cursor: pointer;
}