body {
    font-family: 'Segoe UI', Arial, sans-serif;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    display: flex;
    justify-content: center;
    padding: 20px;
    min-height: 100vh;
}

.container {
    background: white;
    padding: 40px;
    border-radius: 20px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
    width: 100%;
    max-width: 700px;
    text-align: center;
}

.logo { width: 120px; margin-bottom: 10px; }

h1 { color: #1e3a8a; margin-bottom: 20px; }

textarea {
    width: 100%;
    height: 80px;
    padding: 15px;
    border: 2px solid #e2e8f0;
    border-radius: 10px;
    margin-bottom: 15px;
    font-size: 16px;
    resize: none;
}

button {
    background-color: #2563eb;
    color: white;
    padding: 15px 30px;
    border: none;
    border-radius: 10px;
    font-weight: bold;
    cursor: pointer;
    transition: 0.3s;
}

button:hover { background-color: #1d4ed8; }

table { width: 100%; margin-top: 30px; border-collapse: collapse; }
th { background: #f8fafc; padding: 12px; border-bottom: 2px solid #e2e8f0; }
td { padding: 12px; border-bottom: 1px solid #f1f5f9; }

/* Clases de colores para el stock */
.rojo { background-color: #fee2e2; color: #991b1b; font-weight: bold; border-radius: 5px; }
.naranja { background-color: #ffedd5; color: #9a3412; font-weight: bold; }
.verde { background-color: #dcfce7; color: #166534; font-weight: bold; }